As filed with the Securities and Exchange Commission on September 21, 2020

Registration No. 333-            

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form F-3

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

ERYTECH Pharma S.A.

(Exact name of registrant as specified in its charter)

Not Applicable

(Translation of registrant’s name into English)

60 Avenue Rockefeller

69008 Lyon France

Tel: +33 4 78 74 44 38

(Address and telephone number of registrant’s principal executive offices)

ERYTECH Pharma, Inc.

One Main Street, Suite 1150

Cambridge, Massachusetts 02142

+1 857 706 1585

(Name, address and telephone number of agent for service)

Copies of all communications, including communications sent to agent for service, should be sent to:

APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: From time to time after the effective date of this registration statement.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box.  ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box.  ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this Form is a registration statement pursuant to General Instruction I.C. or a post-effective amendment thereto that shall become effective on filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box.  ☐

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.C. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box.  ☐

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

Emerging growth company  ☒

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

CALCULATION OF REGISTRATION FEE

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the registration statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.

EXPLANATORY NOTE

This Registration Statement of ERYTECH Pharma S.A. (the “Registrant”) contains two prospectuses:

The base prospectus immediately follows this explanatory note. The specific terms of any securities to be offered pursuant to the base prospectus will be specified in one or more prospectus supplements to the base prospectus. The sales agreement prospectus immediately follows the base prospectus.

The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED SEPTEMBER 21 , 2020

PROSPECTUS

$100,000,000

Ordinary Shares

American Depositary Shares representing Ordinary Shares

Warrants to Purchase Ordinary Shares or American Depositary Shares

This prospectus will allow us to issue, from time to time at prices and on terms to be determined at or prior to the time of the offering, up to $100,000,000 of our ordinary shares, including American Depositary Shares, or ADSs, representing ordinary shares, as well as warrants to purchase ordinary shares or ADSs. These securities may be offered individually or in any combination.

This prospectus describes the general terms of these securities and the general manner in which these securities will be offered. We will provide you with the specific terms of any offering in one or more supplements to this prospectus. The prospectus supplements will also describe the specific manner in which these securities will be offered and may also supplement, update or amend information contained in this document. You should read this prospectus and any prospectus supplement, as well as any documents incorporated by reference into this prospectus or any prospectus supplement, carefully before you invest.

Our securities may be sold directly by us to you, through agents designated from time to time or to or through underwriters or dealers. For additional information on the methods of sale, you should refer to the section titled “Plan of Distribution” in this prospectus and in the applicable prospectus supplement. If any underwriters or agents are involved in the sale of our securities with respect to which this prospectus is being delivered, the names of such underwriters or agents and any applicable fees or commissions and over-allotment options will be set forth in a prospectus supplement. The price to the public of such securities and the net proceeds that we expect to receive from such sale will also be set forth in a prospectus supplement.

Our ADSs are listed on the Nasdaq Global Select Market under the symbol “ERYP.” On September 17, 2020, the last reported sale price of our ADSs on the Nasdaq Global Select Market was $7.47 per ADS. The applicable prospectus supplement will contain information, where applicable, as to any other listing, if any, on the Nasdaq Global Select Market or any securities market or other securities exchange of the securities covered by the prospectus supplement. There is currently no market through which warrants may be sold and purchasers may not be able to resell warrants purchased under this prospectus. This may affect the pricing of any warrants in the secondary market, the transparency and availability of trading prices, the liquidity of the warrants and the extent of issuer regulation. Prospective purchasers of our securities are urged to obtain current information as to the market prices of our securities, where applicable.

Investing in our securities involves a high degree of risk. Before deciding whether to invest in our securities, you should consider carefully the risks that we have described on page 6 of this prospectus under the caption “Risk Factors” and under the caption “Risk Factors” in our most recent Annual Report on Form 20-F incorporated by reference in this prospectus. We may also include specific risk factors in supplements to this prospectus under the caption “Risk Factors.” This prospectus may not be used to sell our securities unless accompanied by a prospectus supplement.

Owning our securities may subject you to tax consequences both in France and in the United States. This prospectus and any applicable prospectus supplement may not describe these tax consequences fully. You should read the tax discussion in this prospectus and any applicable prospectus supplement. In addition, your ability to enforce civil liabilities under U.S. federal securities laws may be affected adversely by the fact that we are incorporated under the laws of France, many of our officers and directors and experts named in this prospectus are residents of France or elsewhere outside of the United States, and a substantial portion of our assets and the assets of such persons are located outside the United States. See “Enforcement of Civil Liabilities.”

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is             , 2020.

TABLE OF CONTENTS

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement on Form F-3 that we filed with the Securities and Exchange Commission, or SEC, utilizing a “shelf” registration process. Under this shelf registration process, we may offer ordinary shares, including ADSs representing our ordinary shares, and warrants to purchase ordinary shares or ADSs, either individually or in combination, in one or more offerings, with a total aggregate offering price of up to $100,000,000. This prospectus provides you with a general description of the securities we may offer.

Each time we sell securities under this prospectus, we will provide a prospectus supplement that will contain specific information about the terms of that offering. We may also authorize one or more free writing prospectuses to be provided to you that may contain material information relating to these offerings. The prospectus supplement and any related free writing prospectus that we may authorize to be provided to you may also add, update or change information contained in this prospectus or in any documents that we have incorporated by reference into this prospectus. You should read this prospectus, any applicable prospectus supplement and any related free writing prospectus, together with the information incorporated herein by reference as described under the heading “Incorporation of Certain Information by Reference,” before investing in any of the securities offered.

THIS PROSPECTUS MAY NOT BE USED TO CONSUMMATE A SALE OF SECURITIES UNLESS IT IS ACCOMPANIED BY A PROSPECTUS SUPPLEMENT.

Neither we, nor any agent, underwriter or dealer has authorized any person to give any information or to make any representation other than those contained or incorporated by reference in this prospectus, any applicable prospectus supplement or any related free writing prospectus prepared by or on behalf of us or to which we have referred you. This prospectus, any applicable supplement to this prospectus or any related free writing prospectus do not constitute an offer to sell or the solicitation of an offer to buy any securities other than the registered securities to which they relate, nor do this prospectus, any applicable supplement to this prospectus or any related free writing prospectus constitute an offer to sell or the solicitation of an offer to buy securities in any jurisdiction to any person to whom it is unlawful to make such offer or solicitation in such jurisdiction.

You should not assume that the information contained in this prospectus, any applicable prospectus supplement or any related free writing prospectus is accurate on any date subsequent to the date set forth on the front of the document or that any information we have incorporated by reference is correct on any date subsequent to the date of the document incorporated by reference, even though this prospectus, any applicable prospectus supplement or any related free writing prospectus is delivered, or securities are sold, on a later date.

This prospectus and the information incorporated herein by reference contains summaries of certain provisions contained in some of the documents described herein, but reference is made to the actual documents for complete information. All of the summaries are qualified in their entirety by the actual documents. Copies of some of the documents referred to herein have been filed, will be filed or will be incorporated by reference as exhibits to the registration statement of which this prospectus is a part, and you may obtain copies of those documents as described below under the heading “Where You Can Find More Information.”

Unless otherwise indicated in this prospectus, “ERYTECH,” “the company,” “our company,” “we,” “us” and “our” refer to ERYTECH Pharma S.A. and its consolidated subsidiary.

In this prospectus, references to “euro” or “€” are to the legal currency of the countries of the European Union, including the Republic of France, and references to “dollars,” “U.S. dollars” or “$” are to the legal currency of the United States of America.

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RISK FACTORS

Investing in our securities involves a high degree of risk. You should carefully review the risks and uncertainties described under the heading “Risk Factors” contained in the applicable prospectus supplement and any related free writing prospectus, and under similar headings in our Annual Report on Form 20-F for the year ended December 31, 2019 as updated by our subsequent filings, some of which are incorporated by reference into this prospectus, before deciding whether to purchase any of the securities being registered pursuant to the registration statement of which this prospectus is a part. Each of the risk factors could adversely affect our business, results of operations, financial condition and cash flows, as well as adversely affect the value of an investment in our securities, and the occurrence of any of these risks might cause you to lose all or part of your investment. Additional risks not presently known to us or that we currently believe are immaterial may also significantly impair our business operations.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and the documents incorporated by reference contain forward-looking statements. These are based on our management’s current beliefs, expectations and assumptions about future events, conditions and results and on information currently available to us. Discussions containing these forward-looking statements may be found, among other places, in the sections titled “Information on the Company,” “Risk Factors” and “Operating and Financial Review and Prospects” incorporated by reference from our most recent Annual Report on Form 20-F, as well as any amendments thereto, filed with the SEC.

Any statements in this prospectus, or incorporated herein, about our expectations, beliefs, plans, objectives, assumptions or future events or performance are not historical facts and are forward-looking statements. Within the meaning of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act, these forward-looking statements include statements regarding:

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In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “could,” “estimate,” “expects,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “will,” “would” or the negative or plural of those terms, and similar expressions intended to identify statements about the future, although not all forward-looking statements contain these words. These statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to be materially different from the information expressed or implied by these forward-looking statements.

You should refer to the “Risk Factors” section contained in the applicable prospectus supplement and any related free writing prospectus, and under similar headings in the other documents that are incorporated by reference into this prospectus, for a discussion of important factors that may cause our actual results to differ materially from those expressed or implied by our forward-looking statements. Given these risks, uncertainties and other factors, many of which are beyond our control, we cannot assure you that the forward-looking statements in this prospectus will prove to be accurate, and you should not place undue reliance on these forward-looking statements. Furthermore, if our forward-looking statements prove to be inaccurate, the inaccuracy may be material. In light of the significant uncertainties in these forward-looking statements, you should not regard these statements as a representation or warranty by us or any other person that we will achieve our objectives and plans in any specified time frame, or at all.

Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to revise any forward-looking statements to reflect events or developments occurring after the date of this prospectus, even if new information becomes available in the future.

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OFFER STATISTICS AND EXPECTED TIMETABLE

We may sell from time to time pursuant to this prospectus (as may be detailed in a prospectus supplement) an indeterminate number of ordinary shares, including ADSs representing our ordinary shares, and warrants to purchase ordinary shares or ADSs, either individually or in combination, as shall have a maximum aggregate offering price of up to $100,000,000. The actual price per share or per security of the securities that we will offer pursuant hereto will depend on a number of factors that may be relevant as of the time of offer. See “Plan of Distribution.”

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CAPITALIZATION

The following table presents our total capitalization and cash and cash equivalents as of June 30, 2020. You should read the financial data in the following table in conjunction with our financial statements and related notes incorporated by reference into this prospectus.

The outstanding share information as of June 30, 2020 excludes:

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OFFER AND LISTING DETAILS

We may sell from time to time pursuant to this prospectus (as may be detailed in a prospectus supplement) an indeterminate number of ordinary shares, including ADSs representing our ordinary shares, and warrants to purchase ordinary shares or ADSs, either individually or in combination, as shall have a maximum aggregate offering price of up to $100,000,000. The actual price per share or per security of the securities that we will offer pursuant hereto will depend on a number of factors that may be relevant as of the time of offer. See “Plan of Distribution.”

Our ADSs have been listed on the Nasdaq Global Select Market under the symbol “ERYP” since November 10, 2017. Our ordinary shares have been listed on Euronext Paris under the symbol “ERYP” since May 7, 2013. Prior to that date, there was no public trading market for our ADSs or our ordinary shares.

There is currently no public trading market for our warrants.

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USE OF PROCEEDS

We will retain broad discretion over the use of the net proceeds from the sale of the securities offered hereby. Except as described in any applicable prospectus supplement or in any free writing prospectuses that we may authorize to be provided to you in connection with a specific offering, we currently intend to use the net proceeds from the sale of the securities offered hereby to fund the research and development of our product candidates, for working capital and for general corporate purposes. We may also use a portion of the net proceeds to invest in or acquire businesses or technologies that we believe are complementary to our own, although we have no current plans, commitments or agreements with respect to any acquisitions as of the date of this prospectus. We will set forth in the applicable prospectus supplement or free writing prospectus our intended use for the net proceeds received from the sale of any securities sold pursuant to the prospectus supplement or free writing prospectus. Pending these uses, we intend to invest the net proceeds in investment-grade, interest-bearing securities.

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PLAN OF DISTRIBUTION

We may offer securities under this prospectus from time to time pursuant to underwritten public offerings, negotiated transactions, block trades or a combination of these methods. We may sell the securities (1) through underwriters or dealers, (2) through agents or (3) directly to one or more purchasers, or through a combination of such methods. We may distribute the securities from time to time in one or more transactions, in accordance with applicable law and regulations and existing shareholders delegations of authority, at:

We may directly solicit offers to purchase the securities being offered by this prospectus. We may also designate agents to solicit offers to purchase the securities from time to time, and may enter into arrangements for “at-the-market,” equity line or similar transactions. We will name in a prospectus supplement any underwriter or agent involved in the offer or sale of the securities.

If we utilize a dealer in the sale of the securities being offered by this prospectus, we will sell the securities to the dealer, as principal. The dealer may then resell the securities to the public at varying prices to be determined by the dealer at the time of resale.

If we utilize an underwriter in the sale of the securities being offered by this prospectus, we will execute an underwriting agreement with the underwriter at the time of sale, and we will provide the name of any underwriter in the prospectus supplement which the underwriter will use to make resales of the securities to the public. In connection with the sale of the securities, we, or the purchasers of the securities for whom the underwriter may act as agent, may compensate the underwriter in the form of underwriting commissions. The underwriter may sell the securities to or through dealers, and the underwriter may compensate those dealers in the form of concessions or commissions.

With respect to underwritten public offerings, negotiated transactions and block trades, we will provide in the applicable prospectus supplement information regarding any compensation we pay to underwriters, dealers or agents in connection with the offering of the securities, and any concessions or commissions allowed by underwriters to participating dealers. Underwriters, dealers and agents participating in the distribution of the securities may be deemed to be underwriters within the meaning of the Securities Act, and any commissions received by them and any profit realized by them on resale of the securities may be deemed to be underwriting commissions. We may enter into agreements to indemnify underwriters, dealers and agents against civil liabilities, including liabilities under the Securities Act, or to contribute to payments they may be required to make in respect thereof.

If so indicated in the applicable prospectus supplement, we will authorize underwriters, dealers or other persons acting as our agents to solicit offers by certain institutions to purchase securities from us pursuant to delayed delivery contracts providing for payment and delivery on the date stated in each applicable prospectus supplement. Each contract will be for an amount not less than, and the aggregate amount of securities sold pursuant to such contracts shall not be less nor more than, the respective amounts stated in each applicable prospectus supplement. Institutions with whom the contracts, when authorized, may be made include commercial and savings banks, insurance companies, pension funds, investment companies, educational and charitable institutions and other institutions, but shall in all cases be subject to our approval. Delayed delivery contracts will not be subject to any conditions except that:

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One or more firms, referred to as “remarketing firms,” may also offer or sell the securities, if a prospectus supplement so indicates, in connection with a remarketing arrangement upon their purchase. Remarketing firms will act as principals for their own accounts or as our agents. These remarketing firms will offer or sell the securities in accordance with the terms of the securities. Each prospectus supplement will identify and describe any remarketing firm and the terms of its agreement, if any, with us and will describe the remarketing firm’s compensation. Remarketing firms may be deemed to be underwriters in connection with the securities they remarket. Remarketing firms may be entitled under agreements that may be entered into with us to indemnification by us against certain civil liabilities, including liabilities under the Securities Act, and may be customers of, engage in transactions with or perform services for us in the ordinary course of business.

Certain underwriters may use this prospectus and any accompanying prospectus supplement for offers and sales related to market-making transactions in the securities. These underwriters may act as principal or agent in these transactions, and the sales will be made at prices related to prevailing market prices at the time of sale. Any underwriters involved in the sale of the securities may qualify as “underwriters” within the meaning of Section 2(a)(11) of the Securities Act. In addition, the underwriters’ commissions or concessions may qualify as underwriters’ compensation under the Securities Act and the rules of the Financial Industry Regulatory Authority, Inc., or FINRA.

ADSs representing our ordinary shares sold, or reserved for issuance upon the exercise of warrants sold, pursuant to the registration statement of which this prospectus is a part will be authorized for listing and trading on the Nasdaq Global Select Market. The applicable prospectus supplement will contain information, where applicable, as to any other listing, if any, on the Nasdaq Global Select Market or any securities market or other securities exchange of the securities covered by the prospectus supplement. Underwriters may make a market in our ADSs, but will not be obligated to do so and may discontinue any market making at any time without notice. We can make no assurance as to the liquidity of or the existence, development or maintenance of trading markets for any of the securities.

In order to facilitate the offering of the securities, certain persons participating in the offering may engage in transactions that stabilize, maintain or otherwise affect the price of the securities. This may include over-allotments or short sales of the securities, which involve the sale by persons participating in the offering of more securities than we sold to them. In these circumstances, these persons would cover such over-allotments or short positions by making purchases in the open market or by exercising their over-allotment option. In addition, these persons may stabilize or maintain the price of the securities by bidding for or purchasing the applicable security in the open market or by imposing penalty bids, whereby selling concessions allowed to dealers participating in the offering may be reclaimed if the securities sold by them are repurchased in connection with stabilization transactions. The effect of these transactions may be to stabilize or maintain the market price of the securities at a level above that which might otherwise prevail in the open market. These transactions may be discontinued at any time.

The underwriters, dealers and agents may engage in other transactions with us, or perform other services for us, in the ordinary course of their business.

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DESCRIPTION OF SHARE CAPITAL

The following description of our share capital summarizes certain provisions of our bylaws. Such summaries do not purport to be complete and are subject to, and are qualified in their entirety by reference to, all of the provisions of our bylaws, a copy of which has been filed as an exhibit to the registration statement of which this prospectus forms a part.

General

As of December 31, 2019, our outstanding share capital consisted of a total of 17,940,035 ordinary shares, with nominal value €0.10 per share. As of June 30, 2020, our outstanding share capital had increased to 17,956,115 ordinary shares. As of August 31, 2020, our outstanding share capital had increased to 18,301,621 ordinary shares. In general, each shareholder is entitled to one vote per share at any general shareholders’ meeting. Pursuant to our bylaws, however, a double voting right is attached to each registered share which is held in the name of the same shareholder for at least two years.

Under French law, our bylaws set forth only our issued and outstanding share capital as of the date of the bylaws. Our fully diluted share capital represents all issued and outstanding shares, as well as all potential shares which may be issued upon exercise of outstanding founder’s share warrants and share warrants, as approved by our shareholders and granted by our board of directors.

Reconciliation of the Number of Ordinary Shares Outstanding through August 31, 2020

Shareholder Authorizations Regarding Share Capital

At a combined general meeting of shareholders held on June 26, 2020, our board of directors received the following authorizations from shareholders:

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History of Securities Issuances

From January 1, 2017 through August 31, 2020, the following events have changed the number and classes of our issued and outstanding shares:

Key Provisions of Our Bylaws and French Law Affecting Our Ordinary Shares

The description below reflects the terms of our bylaws and summarizes the material rights of holders of our ordinary shares under French law. Please note that this is only a summary and is not intended to be exhaustive. For further information, please refer to the full text of our bylaws, a copy of which has been filed as an exhibit to the registration statement of which this prospectus forms a part.

Corporate Purpose (Article 3 of the Bylaws)

Our corporate purpose in France and abroad includes the research, manufacturing, importation, distribution and marketing of investigational drugs, devices and medical equipment, and the provision of advisory services associated with these activities. We are authorized to engage in all financial, commercial, industrial, civil, property or security-related transactions that directly or indirectly relate to accomplishing the purposes stated above.

Our company may act directly or indirectly and do all these operations in all countries, for or on behalf of third parties, either alone or with partnership with third parties, association, group or creation of new companies, contribution, sponsorship, subscription, purchase of shares or rights, mergers, alliances, undeclared partnership or taking or giving in lease or in management of all property and rights or otherwise.

Directors (Articles 17-22 of the Bylaws)

Duties of the Board. Except for powers given to our shareholders by law and within the limit of the corporate purpose, our board of directors is responsible for all matters relating to the successful operations of our company, including but not limited to, social and environmental issues associated with our company’s activities, and, through its resolutions, governs matters involving the company.

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Appointment and Term. Our board of directors must be composed of at least three members, but may not exceed 18 members, subject to the dispensation established by law in the event of merger. In appointing and electing directors, we seek a balanced representation of women and men. The term of a director is 3 years, and directors may be re-elected at our annual ordinary share meetings; however, a director over the age of 75 may not be appointed if such appointment would result in the number of directors over the age of 75 constituting more than one-third of the board. The number of directors who are also our employees cannot exceed one-third of the board. Directors may be natural persons or legal entities except for the chairman of the board who must be a natural person. Legal entities appointed to the board must designate a permanent representative. If a director dies or resigns between annual meetings, the board may appoint a temporary director to fill the vacancy, subject to ratification at the next ordinary general meeting, or, if such vacancy results in a number of directors below three, the board must call an ordinary general meeting to fill the vacancy. If a director is absent at more than four consecutive meetings or placed with guardians, he or she will be deemed to have automatically resigned.

Organization. The board must elect a chairman from among the board members. The chairman must be a natural person, age 75 or younger, and may be removed by the board at any time. The board may also elect a natural person as vice president to preside in the chairman’s absence and may designate up to two non-voting board observers.

Deliberations. At least half of the number of directors in office must be present to constitute a quorum. Decisions are made by a majority of the directors present or represented and, if there is a tie, the vote of the chairman will carry the decision. Meetings may be held as often as required; however, the chairman is required to call a meeting with a determined agenda upon the request of at least one-third of the directors if the board has not met for more than two months. French law and our charter and bylaws allow directors to attend meetings in person or, to the extent permitted by applicable law and with specified exceptions in our bylaws, by videoconference or other telecommunications arrangements. The board of directors can also make decisions by way of written consultation under the conditions provided by law.

Directors’ Voting Powers on Proposal, Arrangement or Contract in which any Director is Materially Interested. Under French law, any agreement entered into, directly or through an intermediary, between us and any director that is not entered into in the ordinary course of our business and upon standard market terms is subject to the prior authorization of the board of directors. The interested director cannot vote on such decision. The same provision applies to agreements between us and another company, except where such company is our wholly owned subsidiary, if one of our directors is the owner or a general partner, manager, director, general manager or member of the executive or supervisory board of the other company, as well as to agreements in which one of our directors has an indirect interest.

Directors’ Compensation. Director compensation for attendance at board meetings is determined at the annual ordinary general meeting. The general meeting may allocate an annual fixed sum and the board of directors allocates this sum among its members as it sees fit. In addition, the board of directors may allocate exceptional compensation (rémunération exceptionnelle) for missions or mandates entrusted to its members, for example as member or chair of one or more board committees, this remuneration is subject to the provisions regarding related-parties agreements. At our combined general meetings of shareholders held on June 27, 2017, June 28, 2018, June 21, 2019 and June 26, 2020, shareholders set the total annual attendance fees to be distributed among non-employee directors at €280 thousand for 2017 and 2018, €400 thousand for 2019 and €425 thousand for 2020.

Board of Directors’ Borrowing Powers. There are currently no limits imposed on the amounts of loans or borrowings that the board of directors may approve.

Directors’ Share Ownership Requirements. Our directors are not required to own any of our shares.

Rights, Preferences and Restrictions Attaching to Ordinary Shares (Articles 9, 16, 30, 33 and 34 of the Bylaws)

Dividends. We may only distribute dividends out of our distributable profits, plus any amounts held in our reserves that the shareholders decide to make available for distribution, other than those reserves that are specifically required by law.

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“Distributable Profits” consist of our statutory net profit in each fiscal year, calculated in accordance with accounting standards applicable in France, as increased or reduced by any profit or loss carried forward from prior years, less any contributions to the reserve accounts pursuant to French law.

Legal Reserve. Pursuant to French law, we must allocate 5% of our statutory net profit for each year to our legal reserve fund before dividends may be paid with respect to that year. Funds must be allocated until the amount in the legal reserve is equal to 10% of the aggregate par value of the issued and outstanding share capital.

Approval of Dividends. Pursuant to French law, our board of directors may propose a dividend for approval by the shareholders at the annual ordinary general meeting.

Upon recommendation of our board of directors, our shareholders may decide to allocate all or part of any distributable profits to special or general reserves, to carry them forward to the next fiscal year as retained earnings or to allocate them to the shareholders as dividends. However, dividends may not be distributed when our net assets are or would become as a result of such distribution lower than the amount of the share capital plus the amount of the legal reserves which, under French law, may not be distributed to shareholders. The amount of our share capital plus the amount of our legal reserves which may not be distributed was equal to €1,795,611.50 at June 26, 2020.

Our board of directors may distribute interim dividends after the end of the fiscal year but before the approval of the financial statements for the relevant fiscal year when the interim balance sheet, established during such year and certified by an auditor, reflects that we have earned distributable profits since the close of the last financial year, after recognizing the necessary depreciation and provisions and after deducting prior losses, if any, and the sums to be allocated to reserves, as required by law or the bylaws, and including any retained earnings. The amount of such interim dividends may not exceed the amount of the profit so defined.

Pursuant to French legislation, if a dividend is declared we may be required to pay a dividend tax in an amount equal to 3% of the aggregate dividend paid by us. However, the European Court of Justice, or ECJ, has ruled that the 3% dividend tax may not be applied to redistribution of dividends we receive from our subsidiaries established in another Member State of the EU, in that it creates double taxation of profits made within the EU as prohibited by Article 9 of the Parent-Subsidiary directive (ECJ, 1^st ch. May 17, 2017, case C-365/16 AFEP).

Distribution of Dividends. Dividends are distributed to shareholders pro rata according to their respective holdings of shares. In the case of interim dividends, distributions are made to shareholders on the date set by our board of directors during the meeting in which the distribution of interim dividends is approved. The actual dividend payment date is decided by the shareholders at an ordinary general shareholders’ meeting or by our board of directors in the absence of such a decision by the shareholders. Shareholders that own shares on the actual payment date are entitled to the dividend.

Shareholders may be granted an option to receive dividends in cash or in shares, in accordance with legal conditions. The conditions for payment of dividends in cash shall be set at the shareholders’ meeting or, failing this, by the board of directors.

Timing of Payment. Pursuant to French law, dividends must be paid within a maximum of nine months after the close of the relevant fiscal year, unless extended by court order. Dividends not claimed within five years after the payment date shall be deemed to expire and revert to the French state.

Voting Rights. Each share shall entitle its holder to vote and be represented in the shareholders’ meetings in accordance with the provisions of French law and of our bylaws. Ownership of one share implies, ipso jure, adherence to our bylaws and the decisions of the shareholders’ meeting.

In general, each shareholder is entitled to one vote per share at any general shareholders’ meeting. Pursuant to our bylaws, however, a double voting right is attached to each registered share which is held in the name of the same shareholder for at least two years. Under French law, ordinary bearer shares are not eligible for double

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voting rights. Purchasers of ADSs or of ordinary shares deposited with the depositary to receive ADSs, will be unlikely to meet the requirements to have double voting rights.

Under French law, treasury shares or shares held by entities controlled by us are not entitled to voting rights and do not count for quorum purposes.

Rights to Share in Our Profit. Each share entitles its holder to a portion of the corporate profits and assets proportional to the amount of share capital represented thereby.

Rights to Share in the Surplus in the Event of Liquidation. If we are liquidated, any assets remaining after payment of the debts, liquidation expenses and all of the remaining obligations will first be used to repay in full the par value of our shares. Any surplus will be distributed pro rata among shareholders in proportion to the number of shares respectively held by them, taking into account, where applicable, of the rights attached to shares of different classes.

Repurchase and Redemption of Shares. Under French law, we may acquire our own shares. Such acquisition may be challenged on the ground of market abuse regulations. However, Regulation (EU) No. 596/2014 of April 16, 2014 provides for safe harbor exemptions when the acquisition is made for one of the following purposes:

All other purposes, and especially share buy-backs made for external growth operations in pursuance of Article L. 225-209 of the French Commercial Code, while not forbidden, must be pursued in strict compliance of market manipulation and insider dealing rules.

Under the Market Abuse Regulation 596/2014 of August 16, 2014 (MAR) and in accordance with the General Regulations of the AMF, a corporation shall report to the competent authority of the trading value on which the shares have been admitted to trading or are traded, no later than by the end of the seventh daily market session following the date of the execution of the transaction, all the transactions relating to the buy-back program, in a detailed form and in an aggregated form.

No such repurchase of shares may result in us holding, directly or through a person acting on our behalf, more than 10% of our issued share capital. Shares repurchased by us continue to be deemed “issued” under French law but are not entitled to dividends or voting rights so long as we hold them directly or indirectly, and we may not exercise the preemptive rights attached to them.

Sinking Fund Provisions. Our bylaws do not provide for any sinking fund provisions.

Liability to Further Capital Calls. Shareholders are liable for corporate liabilities only up to the par value of the shares they hold; they are not liable to further capital calls.

Requirements for Holdings Exceeding Certain Percentages. None, except as described below under the sections of this prospectus titled “Declaration of Crossing of Ownership Thresholds (Article 9 of the Bylaws)” and “Form, Holding and Transfer of Shares (Articles 13 and 15 of the Bylaws)—Ownership of Shares by Non-French Persons.”

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Actions Necessary to Modify Shareholders’ Rights

Shareholders’ rights may be modified as allowed by French law. Only the extraordinary shareholders’ meeting is authorized to amend any and all provisions of our bylaws. It may not, however, increase shareholder commitments without the prior approval of each shareholder.

Special Voting Rights of Warrant Holders

Under French law, the holders of warrants of the same class (i.e., warrants that were issued at the same time and with the same rights), including founder’s warrants, are entitled to vote as a separate class at a general meeting of that class of warrant holders under certain circumstances, principally in connection with any proposed modification of the terms and conditions of the class of warrants or any proposed issuance of preferred shares or any modification of the rights of any outstanding class or series of preferred shares.

Rules for Admission to and Calling Annual Shareholders’ Meetings and Extraordinary Shareholders’ Meetings (Section IV of the Bylaws)

Access to, Participation in and Voting Rights at Shareholders’ Meetings. Shareholders’ meetings are composed of all shareholders, regardless of the number of shares they hold. Each shareholder has the right to attend the meetings and participate in the discussions (1) personally; (2) by granting proxy to any individual or legal entity of his choosing; (3) by sending a proxy to the company without indication of the mandate; (4) by voting by correspondence; or (5) at the option of the board of directors at the time the meeting is called, by videoconference or another means of telecommunication, including internet, in accordance with applicable laws that allow identification. The board of directors organizes, in accordance with legal and regulatory requirements, the participation and vote of these shareholders at the meeting, assuring, in particular, the effectiveness of the means of identification.

Participation in shareholders’ general meetings, in any form whatsoever, is subject to registration or registration of shares under the conditions and time limits provided for applicable laws.

The final date for returning voting ballots by correspondence is set by the board of directors and disclosed in the notice of meeting published in the French Journal of Mandatory Statutory Notices, or BALO (Bulletin des Annonces Légales Obligatoires). This date cannot be earlier than three days prior to the meeting unless otherwise provided in the bylaws. Our bylaws provide that the board of directors has the option to accept the voting ballots by correspondence beyond the limit set by applicable laws.

A shareholder who has voted by correspondence will no longer be able to participate directly in the meeting or to be represented. In the case of returning the proxy form and the voting by correspondence form, the proxy form is taken into account, subject to the votes cast in the voting by correspondence form.

A shareholder may be represented at meetings by any individual or legal entity by means of a proxy form which we send to such shareholder either at the shareholder’s request or at our initiative. A shareholder’s request for a proxy form must be received at the registered office at least five days before the date of the meeting. The proxy is only valid for a single meeting or for successive meetings convened with the same agenda. It can also be granted for two meetings, one ordinary, and the other extraordinary, held on the same day or within a period of fifteen days.

A shareholder may vote by correspondence by means of a voting form, which we send to such shareholder either at the shareholder’s request or at our initiative, or which we include in an appendix to a proxy voting form under the conditions provided for by current laws and requirements. A shareholder’s request for a voting form must be received at the registered office at least six days before the date of the meeting. The voting form is also available on our website at least 21 days before the date of the meeting. The voting form must be recorded by us

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three days prior to the shareholders’ meeting, in order to be taken into consideration. The voting by correspondence form addressed by a shareholder is only valid for a single meeting or for successive meetings convened with the same agenda.

To better understand the voting rights of the ADSs, you should carefully read the section in this prospectus titled “Description of American Depositary Shares—Voting Rights.”

Notice of Annual Shareholders’ Meetings. Shareholders’ meetings are convened by our board of directors, or, failing that, by the statutory auditors, or by a court appointed agent or liquidator in certain circumstances. Meetings are held at our registered offices or at any other location indicated in the meeting announcement (avis de réunion). A meeting announcement is published in the BALO at least 35 days prior to a meeting, as well as on our website at least 21 days prior to the meeting. In addition to the particulars relative to the company, it indicates, notably, the meeting’s agenda and the draft resolutions that will be presented. The requests for recording of issues or draft resolutions on the agenda must be addressed to the company under the conditions provided for in the current legislation.

Subject to special legal provisions, the convening notice (avis de convocation) is sent out at least 15 days prior to the date of the meeting, by means of a notice inserted both in a legal announcement bulletin of the registered office department and in the BALO. Further, the holders of registered shares for at least a month at the time of the latest of the insertions of the convening notice shall be summoned individually, by regular letter (or by registered letter if they request it and include an advance of expenses) sent to their last known address. This notice may also be transmitted by electronic means of telecommunication, in lieu of any such mailing, to any shareholder requesting it beforehand by registered letter with acknowledgment of receipt in accordance with legal and regulatory requirements, specifying his e-mail address. The latter may at any time expressly request by registered letter to the Company with acknowledgment of receipt that the aforementioned means of telecommunication should be replaced in the future by a mailing.

The convening notice must also indicate the conditions under which the shareholders may vote by correspondence and the places and conditions in which they can obtain voting forms by mail.

The convening notice may be addressed, where appropriate, with a proxy form and a voting by correspondence form, under the conditions specified in our bylaws, or with a voting by correspondence form alone, under the conditions specified in our bylaws. When the shareholders’ meeting cannot deliberate due to the lack of the required quorum, the second meeting must be called at least ten days in advance in the same manner as used for the first notice.

Agenda and Conduct of Annual Shareholders’ Meetings. The agenda of the shareholders’ meeting shall appear in the convening notice of the meeting and is set by the author of the notice. The shareholders’ meeting may only deliberate on the items on the agenda except for the removal of directors and the appointment of their successors which may be put to vote by any shareholder during any shareholders’ meeting. Pursuant to French law and our current share capital, one or more shareholders representing 5% of our share capital may request the inclusion of items or proposed resolutions on the agenda. Such request must be received at the latest on the 25^th day preceding the date of the shareholders’ meeting, and in any event no later than the 20^th day following the date of the shareholders’ meeting announcement.

Shareholders’ meetings shall be chaired by the Chairman of the board of directors or, in his or her absence, by a Deputy Chairman or by a director elected for this purpose. Failing that, the meeting itself shall elect a Chairman. Vote counting shall be performed by the two members of the meeting who are present and accept such duties, who represent, either on their own behalf or as proxies, the greatest number of votes.

Ordinary Shareholders’ Meeting. Ordinary shareholders’ meetings are those meetings called to make any and all decisions that do not amend our bylaws. An ordinary meeting shall be convened at least once a year within six

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months of the end of each fiscal year in order to approve the annual and consolidated accounts for the relevant fiscal year or, in case of postponement, within the period established by court order. Upon first notice, the meeting may validly deliberate only if the shareholders present or represented by proxy or voting by mail represent at least one-fifth of the shares entitled to vote. Upon second notice, no quorum is required. Decisions are made by a majority of the votes cast by the shareholders present, or represented by proxy, or voting by mail. Abstentions will have the same effect of a “no” vote. In addition, pursuant to a recent AMF recommendation, French listed companies may be required to conduct a consultation of the ordinary shareholders meeting prior to the disposal of the majority of their assets, under certain circumstances.

Extraordinary Shareholders’ Meeting. Our bylaws may only be amended by approval at an extraordinary shareholders’ meeting. Our bylaws may not, however, be amended to increase shareholder commitments without the approval of each shareholder. Subject to the legal provisions governing share capital increases from reserves, profits or share premiums, the resolutions of the extraordinary meeting shall be valid only if the shareholders present, represented by proxy or voting by mail represent at least one-fourth of all shares entitled to vote upon first notice, or one-fifth upon second notice. If the latter quorum is not reached, the second meeting may be postponed to a date no later than two months after the date for which it was initially called. Decisions are made by a two-thirds majority of the votes cast by the shareholders present, represented by proxy, or voting by mail. Abstentions will have the same effect of a “no” vote.

Provisions Having the Effect of Delaying, Deferring or Preventing a Change in Control of Our Company

Provisions contained in our bylaws and French corporate law could make it more difficult for a third-party to acquire us, even if doing so might be beneficial to our shareholders. These provisions include the following:

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Declaration of Crossing of Ownership Thresholds (Article 9 of the Bylaws)

Set forth below is a summary of certain provisions of the French Commercial Code applicable to us. This summary is not intended to be a complete description of applicable rules under French law.

Any individual or legal entity referred to in Articles L. 233-7, L. 233-9 and L. 223-10 of the French Commercial Code coming to directly or indirectly own, or cease to own, alone or in concert, a number of shares representing a fraction of the Company’s capital or voting rights greater or equal to 5%, 10%, 15%, 20%, 25%, 30%, 33.33%, 50%, 66.66%, 90% and 95% shall inform the Company as well as the French Financial Market Authority (AMF) of the total number of shares and voting rights and of securities giving access to the capital or voting rights that it owns immediately or over time within a period of four trading days from the crossing of the said holding thresholds.

This obligation applies when crossing each of the above-mentioned thresholds in a downward direction.

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In case of failure to declare shares or voting rights exceeding the fraction that should have been declared, such shares shall be deprived of voting rights at General Meetings of Shareholders for any meeting that would be held until the expiry of a period of two years from the date of regularization of the notification in accordance with Article L. 233-14 of the French Commercial Code.

In addition, any shareholder crossing, alone or acting in concert, the 10%, 15%, 20% or 25% threshold shall file a declaration with the AMF pursuant to which it shall expose its intention over the following 6 months, including notably whether it intends to continue acquiring shares of the company, it intends to acquire control over the company, its intended strategy for the company.

Further, and subject to certain exemptions, any shareholder crossing, alone or acting in concert, the 30% threshold shall file a mandatory public tender offer with the AMF. Also, any shareholder holding directly or indirectly a number between 30% and 50% of the capital or voting rights and who, in less than 12 consecutive months, increases his/her/its holding of capital or voting rights by at least 1% company’s capital or voting rights, shall file a mandatory public tender offer.

Changes in Share Capital

Increases in Share Capital (Article 10 of the Bylaws). Pursuant to French law, our share capital may be increased only with shareholders’ approval at an extraordinary general shareholders’ meeting following the recommendation of our board of directors. The shareholders may delegate to our board of directors either the authority (délégation de compétence) or the power (délégation de pouvoir) to carry out any increase in share capital.

Increases in our share capital may be effected by:

Increases in share capital by issuing additional securities may be effected through one or a combination of the following:

Decisions to increase the share capital through the capitalization of reserves, profits and/or share premium require shareholders’ approval at an extraordinary general shareholders’ meeting, acting under the quorum and majority requirements applicable to ordinary shareholders’ meetings. Increases effected by an increase in the par value of shares require unanimous approval of the shareholders, unless effected by capitalization of reserves, profits or share premium. All other capital increases require shareholders’ approval at an extraordinary general shareholders’ meeting acting under the regular quorum and majority requirements for such meetings.

Reduction in Share Capital. Pursuant to French law, any reduction in our share capital requires shareholders’ approval at an extraordinary general shareholders’ meeting following the recommendation of our board of

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directors. The share capital may be reduced either by decreasing the par value of the outstanding shares or by reducing the number of outstanding shares. The number of outstanding shares may be reduced by the repurchase and cancellation of shares. Holders of each class of shares must be treated equally unless each affected shareholder agrees otherwise.

Preferential Subscription Right. According to French law, if we issue additional securities for cash, current shareholders will have preferential subscription rights to these securities on a pro rata basis. Preferential subscription rights entitle the individual or entity that holds them to subscribe pro rata based on the number of shares held by them to the issuance of any securities increasing, or that may result in an increase of, our share capital by means of a cash payment or a set-off of cash debts. The preferential subscription rights are transferable during the subscription period relating to a particular offering. Pursuant to recent legislation that went into effect on October 1, 2016, the preferential subscription rights will be transferable during a period starting two days prior to the opening of the subscription period and ending two days prior to the closing of the subscription period.

The preferential subscription rights with respect to any particular offering may be waived at an extraordinary general meeting by a two-thirds vote of our shareholders or individually by each shareholder. Our board of directors and our independent auditors are required by French law to present reports to the shareholders’ meeting that specifically address any proposal to waive the preferential subscription rights.

In the future, to the extent permitted under French law, we may seek shareholder approval to waive preferential subscription rights at an extraordinary general shareholders’ meeting in order to authorize the board of directors to issue additional shares and/or other securities convertible or exchangeable into shares.

Form, Holding and Transfer of Shares (Articles 13 and 15 of the Bylaws)

Form of Shares. The shares are in registered form, until their full payment. When they are fully paid up, they may be in registered form or bearer, at the option of the shareholders.

Further, in accordance with applicable laws, we may request at any time from the central depository responsible for holding our shares, or directly from one or several intermediaries listed in Article L. 211-3 of the French Monetary and Financial Code, the information concerning the owners of our shares and securities conferring immediate or long-term voting rights at our general meetings of shareholders as referred to in Article L. 228-2 of the French Commercial Code.

Holding of Shares. In accordance with French law concerning the “dematerialization” of securities, the ownership rights of shareholders are represented by book entries instead of share certificates. Shares issued are registered in individual accounts opened by us or any authorized intermediary, in the name of each shareholder and kept according to the terms and conditions laid down by the legal and regulatory provisions.

Ownership of Shares by Non-French Persons. Neither French law nor our bylaws limit the right of non-residents of France or non-French persons to own or, where applicable, to vote our securities. However, non-residents of France may have to file an administrative notice with the French authorities in connection with certain direct or indirect investments in us, including through ownership of ADSs. In addition, acquisitions of 10% of the share capital or voting rights of a French resident company or a non-French resident company by a non-French resident or by a French resident, respectively, are subject to statistical reporting requirements to the French National Bank.

Moreover, certain foreign investments in companies incorporated under French laws are subject to the prior authorization from the French Minister of the Economy, where all or part of the target’s business and activity relate to a strategic sector.

The Decree (arrêté) of April 27, 2020 extended the list of sectors subject to prior approval to include biotechnologies now covered under article R. 151-3 III° 1° of the French Monetary and Financial Code, under

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which investments are defined as (i) the acquisition of control—within the meaning of Article L. 233-3 of the French Commercial Code—of a company that has its registered office in France, (ii) the acquisition of all or part of a line of business of a company that has its registered office in France, or (iii) the acquisition of more than 25% of the shares or voting rights of a company that has its registered office in France.

In the context of the ongoing COVID-19 pandemic, the Decree (décret) n°2020-892 dated July 22, 2020 has completed the 25% threshold with an additional temporary 10% threshold of the voting rights for the non-European investments in listed companies applicable, at the date of this prospectus, until December 31, 2020.

See ‘‘Limitations Affecting Shareholders of a French Company—Ownership of ADSs or Shares by Non-French Residents.’’

Assignment and Transfer of Shares. Shares are freely negotiable, subject to applicable legal and regulatory provisions. French law notably provides for standstill obligations and prohibition of insider trading.

Differences in Corporate Law

We are a société anonyme, or S.A., incorporated under the laws of France. The laws applicable to French sociétés anonymes differ from laws applicable to U.S. corporations and their shareholders. Set forth below is a summary of certain differences between the provisions of the French Commercial Code applicable to us and the Delaware General Corporation Law relating to shareholders’ rights and protections. This summary is not intended to be a complete discussion of the respective rights and it is qualified in its entirety by reference to Delaware law and French law.

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Listing

Our ADSs are listed on the Nasdaq Global Select Market under the symbol “ERYP.” Our ordinary shares are listed on Euronext Paris under the symbol “ERYP.”

Transfer Agent and Registrar

The transfer agent and registrar for our ADSs is The Bank of New York Mellon. Our share register for our ordinary shares is maintained by Société Générale. The share register reflects only record owners of our ordinary shares. Holders of our ADSs are not treated as our shareholders and their names are therefore not entered in our share register. The depositary, the custodian or their nominees are the holder of the shares underlying our ADSs. Holders of our ADSs have a right to receive the ordinary shares underlying their ADSs. For discussion on our ADSs and ADS holder rights, see “Description of American Depositary Shares” in this prospectus.

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LIMITATIONS AFFECTING SHAREHOLDERS OF A FRENCH COMPANY

Ownership of ADSs or Shares by Non-French Residents

Neither the French Commercial Code nor our bylaws presently impose any restrictions on the right of non-French residents or non-French shareholders to own and vote shares. However, non-French residents must file a declaration for statistical purposes with the Bank of France (Banque de France) within twenty working days following the date of certain direct foreign investments in us, including any purchase of our ADSs. In particular such filings are required in connection with investments exceeding €15,000,000 that lead to the acquisition of at least 10% of the share capital or voting rights or cross such 10% threshold. Violation of this filing requirement may be sanctioned by five years’ imprisonment and a fine up to twice the amount of the relevant investment. This amount may be increased fivefold if the violation is made by a legal entity. Moreover, certain foreign investments in companies incorporated under French laws are subject to the prior authorization from the French Minister of the Economy, where all or part of the target’s business and activity relate to a strategic sector, such as energy, transportation, public health and telecommunications.

The Decree (arrêté) of April 27, 2020 extended the list of sectors subject to prior approval to include biotechnologies now covered under article R. 151-3 III° 1° of the French Monetary and Financial Code, under which investments are defined as (i) the acquisition of control—within the meaning of Article L. 233-3 of the French Commercial Code—of a company that has its registered office in France, (ii) the acquisition of all or part of a line of business of a company that has its registered office in France, or (iii) the acquisition of more than 25% of the shares or voting rights of a company that has its registered office in France.

In the context of the ongoing COVID-19 pandemic, the Decree (décret) n°2020-892 dated July 22, 2020 has completed the 25% threshold with an additional temporary 10% threshold of the voting rights for the non-European investments in listed companies applicable, at the date of this prospectus, until December 31, 2020.

A fast-track procedure shall apply for any non-European investor exceeding this 10% threshold who will have to notify the Minister of Economy who will then have 10 days to decide whether or not the transaction should be subject to further examination.

In the absence of such authorization, the relevant investment shall be deemed null and void. The relevant investor may be found criminally liable and may be sanctioned with a fine not to exceed the greater of the following amounts: (i) twice the amount of the relevant investment, (ii) 10% of the annual turnover before tax of the target company or (iii) €5 million (for a company) or €1 million (for a natural person).

Foreign Exchange Controls

Under current French foreign exchange control regulations there are no limitations on the amount of cash payments that we may remit to residents of foreign countries. Laws and regulations concerning foreign exchange controls do, however, require that all payments or transfers of funds made by a French resident to a non-resident such as dividend payments be handled by an accredited intermediary. All registered banks and substantially all credit institutions in France are accredited intermediaries.

Availability of Preferential Subscription Rights

Our shareholders will have the preferential subscription rights described under “Description of Share Capital—Key Provisions of Our Bylaws and French Law Affecting Our Ordinary Shares—Changes in Share Capital—Preferential Subscription Right.” Under French law, shareholders have preferential rights to subscribe for cash issues of new shares or other securities giving rights to acquire additional shares on a pro rata basis. Holders of

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our securities in the United States (which may be represented by ADSs) will not be able to exercise preferential subscription rights for their securities unless a registration statement under the Securities Act is effective with respect to such rights or an exemption from the registration requirements imposed by the Securities Act is available. We may, from time to time, issue new shares or other securities giving rights to acquire additional shares (such as warrants) at a time when no registration statement is in effect and no Securities Act exemption is available. If so, holders of our securities in the United States will be unable to exercise any preferential subscription rights and their interests will be diluted. We are under no obligation to file any registration statement in connection with any issuance of new shares or other securities. We intend to evaluate at the time of any rights offering the costs and potential liabilities associated with registering the rights, as well as the indirect benefits to us of enabling the exercise by holders of shares in the United States and ADS holders of the subscription rights, and any other factors we consider appropriate at the time, and then to make a decision as to whether to register the rights. We cannot assure you that we will file a registration statement.

For holders of our ordinary shares represented by ADSs, the depositary may make these rights or other distributions available to ADS holders. If the depositary does not make the rights available to ADS holders and determines that it is impractical to sell the rights, it may allow these rights to lapse. In that case, ADS holders will receive no value for them. The section of this prospectus titled “Description of American Depositary Shares—Dividends and Other Distributions” explains in detail the depositary’s responsibility in connection with a rights offering. See also “Risk Factors—The right as a holder of ADSs to participate in any future preferential subscription rights or to elect to receive dividends in shares may be limited, which may cause dilution to the holders of our ADSs” in our most recent Annual Report on Form 20-F.

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DESCRIPTION OF AMERICAN DEPOSITARY SHARES

The Bank of New York Mellon acts as the depositary for the American Depositary Shares. The Bank of New York Mellon’s depositary offices are located at 240 Greenwich Street, New York, New York 10286. American Depositary Shares are frequently referred to as ADSs and represent ownership interests in securities that are on deposit with the depositary. ADSs may be evidenced by certificates that are commonly known as American Depositary Receipts, or ADRs. The depositary typically appoints a custodian to safekeep the securities on deposit. In this case, the custodian is Société Générale.

You may hold ADSs either (1) directly (a) by having an ADR, which is a certificate evidencing a specific number of ADSs, registered in your name, or (b) by having uncertificated ADSs registered in your name in the Direct Registration System, or DRS, or (2) indirectly by holding a security entitlement in ADSs through your broker or other financial institution that is a direct or indirect participant in the Depository Trust Company, or DTC. If you hold ADSs directly, you are a registered ADS holder, also referred to as an ADS holder. This description assumes you are an ADS holder. If you hold the ADSs indirectly, you must rely on the procedures of your broker or other financial institution to assert the rights of ADS holders described in this section. You should consult with your broker or financial institution to find out what those procedures are.

DRS is a system administered by DTC pursuant to which the depositary may register the ownership of uncertificated ADSs, which ownership is confirmed by periodic statements sent by the depositary to the registered holders of uncertificated ADSs.

As an ADS holder, you will not be treated as one of our shareholders and you will not have shareholder rights. French law governs shareholder rights. The depositary will be the holder of the ordinary shares underlying your ADSs. As a holder of ADSs, you will have ADS holder rights. An amended and restated deposit agreement among us, the depositary and you, as an ADS holder, and all other persons directly and indirectly holding ADSs sets out ADS holder rights as well as the rights and obligations of the depositary. New York law governs the amended and restated deposit agreement and the ADRs. In the event of any discrepancy between the ADRs and the amended and restated deposit agreement, the amended and restated deposit agreement governs. A copy of the amended and restated deposit agreement is filed as an exhibit to the registration statement of which this prospectus forms a part.

The following is a summary of the material provisions of the amended and restated deposit agreement. For more complete information, you should read the entire amended and restated deposit agreement and the form of ADR. For directions on how to obtain copies of those documents, see the section of this prospectus titled “Where You Can Find More Information.” Unless otherwise indicated or the context otherwise requires, references to “you” in this section refer to purchasers of ADSs in this offering.

Dividends and Other Distributions

How will you receive dividends and other distributions on the ordinary shares?

The depositary has agreed to pay or distribute to you the cash dividends or other distributions it or the custodian receives on ordinary shares or other deposited securities, after deducting its fees and expenses. You will receive these distributions in proportion to the number of ordinary shares your ADSs represent.

Cash. We do not expect to declare or pay any cash dividends or cash distributions on our ordinary shares for the foreseeable future. The depositary will convert any cash dividend or other cash distribution we pay on the ordinary shares or any net proceeds from the sale of any ordinary shares, rights, securities or other entitlements into U.S. dollars if it can do so on a reasonable basis, and can transfer the U.S. dollars to the United States. If that is not possible or if any government approval is needed and cannot be obtained, the amended and restated deposit agreement allows the depositary to distribute the foreign currency only to those ADS holders to whom it is

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possible to do so. It will hold the foreign currency it cannot convert for the account of the ADS holders who have not been paid. It will not invest the foreign currency and it will not be liable for any interest. Before making a distribution, any withholding taxes or other governmental charges, together with fees and expenses of the depositary that must be paid, will be deducted. See the section of our most recent Annual Report on Form 20-F titled “Taxation.” It will distribute only whole U.S. dollars and cents and will round fractional cents to the nearest whole cent. If the exchange rates fluctuate during a time when the depositary cannot convert the foreign currency, you may lose some or all of the value of the distribution.

Ordinary Shares. The depositary may distribute additional ADSs representing any ordinary shares we distribute as a dividend or free distribution. The depositary will only distribute whole ADSs. It will sell ordinary shares which would require it to deliver a fractional ADS, or ADSs representing those ordinary shares, and distribute the net proceeds in the same way as it does with cash. If the depositary does not distribute additional ADSs, the outstanding ADSs will also represent the new ordinary shares. The depositary may sell a portion of the distributed ordinary shares, or ADSs representing those shares, sufficient to pay its fees and expenses in connection with that distribution.

Rights to Purchase Additional Ordinary Shares. If we offer holders of our securities any rights to subscribe for additional ordinary shares or any other rights, the depositary may (i) exercise those rights on behalf of ADS holders, (ii) distribute those rights to ADS holders or (iii) sell those rights and distribute the net proceeds to ADS holders, in each case after deduction or upon payment of its fees and expenses. To the extent the depositary does not do any of those things, it will allow the rights to lapse unexercised. In that case, you will receive no value for them.

The depositary will exercise or distribute rights only if we ask it to and provide satisfactory assurances to the depositary that it is legal to do so. If the depositary makes rights available to you, it will exercise the rights and purchase the ordinary shares on your behalf and in accordance with your instructions. The depositary will then deposit the ordinary shares and deliver ADSs to you. It will only exercise rights if you pay it the exercise price and any other charges the rights require you to pay and comply with other applicable instructions. U.S. securities laws may restrict the ability of the depositary to distribute rights or ADSs or other securities issued on exercise of rights to all or certain ADS holders, and the securities distributed may be subject to restrictions on transfer.

Other Distributions. The depositary will send to you anything else we distribute on deposited securities by any means it determines is legal, fair and practical. If it cannot make the distribution in that way, the depositary may adopt another method. It may decide to sell what we distributed and distribute the net proceeds, in the same way as it does with cash. Or, it may decide to hold what we distributed, in which case ADSs will also represent the newly distributed property. However, the depositary is not required to distribute any securities (other than ADSs) to ADS holders unless it receives satisfactory evidence from us that it is legal to make that distribution. In addition, the depositary may sell a portion of the distributed securities or property sufficient to pay its fees and expenses in connection with that distribution.

Neither we nor the depositary are responsible for any failure to determine that it may be lawful or feasible to make a distribution available to any ADS holders. We have no obligation to register ADSs, ordinary shares, rights or other securities under the Securities Act. We also have no obligation to take any other action to permit the distribution of ADSs, shares, rights or anything else to ADS holders. This means that you may not receive the distributions we make on our ordinary shares or any value for them if it is illegal or impractical for us to make them available to you.

Deposit, Withdrawal and Cancellation

How are ADSs issued?

The depositary will deliver ADSs if you or your broker deposits ordinary shares or evidence of rights to receive ordinary shares with the custodian. Upon payment of its fees and expenses and of any taxes or charges, such as

40

stamp taxes or share transfer taxes or fees, the depositary will register the appropriate number of ADSs in the names you request and will deliver the ADSs to or upon the order of the person or persons that made the deposit.

How can ADS holders withdraw the deposited securities?

You may surrender your ADSs at the depositary’s office. Upon payment of its fees and expenses and of any taxes or governmental charges payable in connection with such surrender or withdrawal, the depositary will deliver the ordinary shares and any other deposited securities underlying the ADSs to you or a person designated by you at the office of the custodian or through a book-entry delivery. Alternatively, at your request, risk and expense, the depositary will, if feasible, deliver the amount of deposited securities represented by the surrendered ADSs for delivery at the depositary’s office or to another address you may specify. The depositary may charge you a fee and its expenses for instructing the custodian regarding delivery of deposited securities.

How can ADS holders interchange between certificated ADSs and uncertificated ADSs?

You may surrender your ADRs to the depositary for the purpose of exchanging your ADRs for uncertificated ADSs. The depositary will cancel the ADRs and will send you a statement confirming that you are the owner of uncertificated ADSs. Alternatively, upon receipt by the depositary of a proper instruction from a registered holder of uncertificated ADSs requesting the exchange of uncertificated ADSs for certificated ADSs, the depositary will execute and deliver to you an ADR evidencing those ADSs.

Voting Rights

How do you vote?

You may instruct the depositary to vote the number of whole deposited ordinary shares your ADSs represent. If we request the depositary to solicit your voting instructions (and we are not required to do so), the depositary will notify you of shareholders’ meetings or other solicitations of consents and arrange to deliver our voting materials to you. Those materials will describe the matters to be voted on and explain how you may instruct the depositary how to vote. For instructions to be valid, they must reach the depositary by a date set by the depositary.

If the depositary timely receives voting instructions for you, it will endeavor, in so far as practicable, to vote or cause to be voted the amount of deposited ordinary shares represented by those ADSs in accordance with such voting instructions set forth in your request. If we do not request the depositary to solicit your voting instructions, you can still send voting instructions, and, in that case, the depositary may try to vote as you instruct, but it is not required to do so. In any event, the depositary will not exercise any discretion in voting deposited securities and it will only vote or attempt to vote as instructed or as described in the following sentence. If we timely asked the depositary to solicit your instructions but the depositary does not receive voting instructions from you by the specified date and we confirm to the depositary that (1) we wish to receive a proxy, (2) as of the instruction cutoff date we reasonably do not know of any substantial shareholder opposition to the particular question, and (3) the particular question would not be materially adverse to the interests of our shareholders, then the depositary will consider you to have authorized and directed it to give a proxy to a person designated by us to vote the number of deposited securities represented by your ADSs in favor of that question, but only if the question was endorsed by our board of directors.

We cannot assure you that you will receive the voting materials in time to ensure that you can instruct the depositary to vote your ordinary shares. In addition, the depositary and its agents are not responsible for failing to carry out voting instructions or for the manner of carrying out voting instructions. This means that you may not be able to exercise your right to vote and there may be nothing you can do if your ordinary shares are not voted as you requested.

In order to give you a reasonable opportunity to instruct the depositary as to the exercise of voting rights relating to deposited securities, if we request the depositary to act, we will give the depositary notice of any such meeting

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and details concerning the matters to be voted upon at least 30 days in advance of the meeting date except where under French law the notice period for such meeting is less than 30 days.

Except as described above, you will not be able to exercise your right to vote unless you withdraw the ordinary shares. However, you may not know about the shareholder meeting enough in advance to withdraw the ordinary shares.

Fees and Expenses

What fees and expenses will you be responsible for paying?

Pursuant to the terms of the amended and restated deposit agreement, the holders of ADSs will be required to pay the following fees:

The depositary collects its fees for delivery and surrender of ADSs directly from investors depositing ordinary shares or surrendering ADSs for the purpose of withdrawal or from intermediaries acting for them. The depositary collects fees for making distributions to investors by deducting those fees from the amounts distributed or by selling a portion of distributable property to pay the fees. The depositary may collect its annual fee for depositary services by deduction from cash distributions or by directly billing investors or by charging the book-entry system accounts of participants acting for them. The depositary may collect any of its fees by deduction from any cash distribution payable to ADS holders that are obligated to pay those fees. The depositary may generally refuse to provide for-fee services until its fees for those services are paid.

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From time to time, the depositary may make payments to us to reimburse or share revenue from the fees collected from ADS holders, or waive fees and expenses for services provided, generally relating to costs and expenses arising out of establishment and maintenance of the ADS program. In performing its duties under the amended and restated deposit agreement, the depositary may use brokers, dealers, foreign currency or other service providers that are affiliates of the depositary and that may earn or share fees, spreads or commissions.

The depositary may convert foreign currency itself or through any of its affiliates and, in those cases, acts as principal for its own account and not as agent, advisor, broker or fiduciary on behalf of any other person and earns revenue, including, without limitation, transaction spreads, that it will retain for its own account. The revenue is based on, among other things, the difference between the exchange rate assigned to the currency conversion made under the amended and restated deposit agreement and the rate that the depositary or its affiliate receives when buying or selling foreign currency for its own account. The depositary makes no representation that the exchange rate used or obtained in any currency conversion under the amended and restated deposit agreement will be the most favorable rate that could be obtained at the time or that the method by which that rate will be determined will be the most favorable to holders of ADSs, subject to the depositary’s obligations under the amended and restated deposit agreement. The methodology used to determine exchange rates used in currency conversions is available upon request.

Payment of Taxes

You will be responsible for any taxes or other governmental charges payable on your ADSs or on the deposited securities represented by any of your ADSs. The depositary may refuse to register any transfer of your ADSs or allow you to withdraw the deposited securities represented by your ADSs until such taxes or other charges are paid. It may apply payments owed to you or sell deposited securities represented by your ADSs to pay any taxes owed and you will remain liable for any deficiency. If the depositary sells deposited securities, it will, if appropriate, reduce the number of ADSs registered in your name to reflect the sale and pay you any net proceeds, or send you any property, remaining after it has paid the taxes. Your obligation to pay taxes and indemnify us and the depository against any tax claims will survive the transfer or surrender of your ADSs, the withdrawal of the deposited ordinary shares as well as the termination of the amended and restated deposit agreement.

Reclassifications, Recapitalizations and Mergers

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Amendment and Termination

How may the amended and restated deposit agreement be amended?

We may agree with the depositary to amend the amended and restated deposit agreement and the ADRs without your consent for any reason. If an amendment adds or increases fees or charges, except for taxes and other governmental charges, registration fees, facsimile costs, delivery costs or other such expenses, or that would otherwise prejudice a substantial right of ADS holders, it will not become effective for outstanding ADSs until 30 days after the depositary notifies ADS holders of the amendment. At the time an amendment becomes effective, you are considered, by continuing to hold your ADSs, to agree to the amendment and to be bound by the ADRs and the amended and restated deposit agreement as further amended.

How may the amended and restated deposit agreement be terminated?

The depositary will terminate the amended and restated deposit agreement if we ask it to do so, in which case the depositary will give notice to you at least 90 days prior to termination. The depositary may also terminate the amended and restated deposit agreement if the depositary has told us that it would like to resign and we have not appointed a new depositary within 60 days. In such case, the depositary must notify you at least 90 days before termination. In addition, the depositary may initiate termination of the amended and restated deposit agreement if (i) we delist our shares from an exchange on which they were listed and do not list the shares on another exchange; (ii) we appear to be insolvent or enter insolvency proceedings; (iii) all or substantially all the value of the deposited securities has been distributed either in cash or in the form of securities; (iv) there are no deposited securities underlying the ADSs or the underlying deposited securities have become apparently worthless; or (v) there has been a replacement of deposited securities.

After termination, the depositary and its agents will do the following under the amended and restated deposit agreement but nothing else: collect dividends and other distributions on the deposited securities, sell rights and other property, and deliver ordinary shares and other deposited securities upon cancellation of ADSs. At any time after the termination date, the depositary may sell the deposited securities. After that, the depositary will hold the money it received on the sale, as well as any other cash it is holding under the amended and restated deposit agreement, unsegregated and without liability for interest, for the pro rata benefit of the ADS holders that have not surrendered their ADSs. Normally, the depositary will sell as soon as practicable after the termination date.

After the termination date and before the depositary sells, ADS holders can still surrender their ADSs and receive delivery of deposited securities, except that the depositary may refuse to accept a surrender for the purpose of withdrawing deposited securities if it would interfere with the selling process. The depositary may refuse to accept a surrender for the purpose of withdrawing sale proceeds until all the deposited securities have been sold. The depositary will continue to collect distributions on deposited securities, but, after the termination date, the depositary is not required to register any transfer of ADSs or distribute any dividends or other distributions on deposited securities to the ADS holder (until they surrender their ADSs) or give any notices or perform any other duties under the amended and restated deposit agreement except as described in this paragraph.

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Limitations on Obligations and Liability

The amended and restated deposit agreement expressly limits our obligations and the obligations of the depositary. It also limits our liability and the liability of the depositary to ADS holders. We and the depositary:

In the amended and restated deposit agreement, we and the depositary agree to indemnify each other under certain circumstances. Additionally, we, the depositary and each owner and holder waives the right to a jury trial in an action against us or the depositary arising out of or relating to the amended and restated deposit agreement.

Requirements for Depositary Actions

Before the depositary will deliver or register a transfer of an ADS, make a distribution on an ADS, or permit withdrawal of ordinary shares, the depositary may require:

The depositary may refuse to deliver ADSs or register transfers of ADSs generally when the transfer books of the depositary or our transfer books are closed or at any time if the depositary or we think it advisable to do so.

Your Right to Receive the Ordinary Shares Underlying Your ADSs

ADS holders have the right to cancel their ADSs and withdraw the underlying ordinary shares at any time except:

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This right of withdrawal is not limited by any other provision of the amended and restated deposit agreement.

Direct Registration System

In the amended and restated deposit agreement, all parties to the amended and restated deposit agreement acknowledge that the DRS and Profile Modification System, or Profile, will apply to ADSs upon acceptance thereof to DRS by DTC. DRS is the system administered by DTC under which the depositary may register the ownership of uncertificated ADSs and such ownership will be evidenced by periodic statements sent by the depositary to the registered holders of uncertificated ADSs. Profile is a required feature of DRS that allows a DTC participant, claiming to act on behalf of a registered holder of ADSs, to direct the depositary to register a transfer of those ADSs to DTC or its nominee and to deliver those ADSs to the DTC account of that DTC participant without receipt by the depositary of prior authorization from the ADS holder to register that transfer.

In connection with and in accordance with the arrangements and procedures relating to DRS/Profile, the parties to the amended and restated deposit agreement understand that the depositary will not determine whether the DTC participant that is claiming to be acting on behalf of an ADS holder in requesting registration of transfer and delivery as described above has the actual authority to act on behalf of the ADS holder (notwithstanding any requirements under the Uniform Commercial Code). In the amended and restated deposit agreement, the parties agree that the depositary’s reliance on and compliance with instructions received by the depositary through the DRS/Profile System and in accordance with the amended and restated deposit agreement will not constitute negligence or bad faith on the part of the depositary.

Shareholder Communications; Inspection of Register of Holders of ADSs; ADS Holder Information

The depositary will make available for your inspection at its office all communications that it receives from us as a holder of deposited securities that we make generally available to holders of deposited securities. The depositary will send you copies of those communications or otherwise make those communications available to you if we ask it to. You have a right to inspect the register of holders of ADSs, but not for the purpose of contacting those holders about a matter unrelated to our business or the ADSs.

Each holder of ADSs will be required to provide certain information, including proof of taxpayer status, residence and beneficial ownership (as applicable), from time to time and in a timely manner as we, the depositary or the custodian may deem necessary or proper to fulfill obligations under applicable law.

Jury Trial Waiver

The deposit agreement provides that, to the extent permitted by law, ADS holders waive the right to a jury trial of any claim they may have against us or the depositary arising out of or relating to our shares, the ADSs or the deposit agreement, including any claim under the U.S. federal securities laws. If we or the depositary opposed a jury trial demand based on the waiver, the court would determine whether the waiver was enforceable in the facts and circumstances of that case in accordance with applicable case law. However, you will not be agreeing to the terms of the deposit agreement, be deemed to have waived our or the depositary’s compliance with U.S. federal securities laws and the rules and regulations promulgated thereunder.

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DESCRIPTION OF WARRANTS

Warrants (bons de souscription d’actions) may be offered separately or together with ordinary shares or ADSs. Each series of warrants will be issued under any separate warrant agreement to be entered into between us and one or more purchasers of such warrants. The applicable prospectus supplement will include details of the warrant agreements and terms and conditions covering the warrants being offered.

The particular terms of each issue or series of warrants will be described in the related prospectus supplement. If warrants for the purchase of ordinary shares or ADSs are offered, the description will include, where applicable:

We reserve the right to set forth in a prospectus supplement or applicable free writing prospectus specific terms of the warrants that are not within the options and parameters set forth in this prospectus. In addition, to the extent that any particular terms and conditions of the warrants described in a prospectus supplement or applicable free writing prospectus differ from any of the terms described in this prospectus, the description of such terms and conditions set forth in this prospectus shall be deemed to have been superseded or supplemented by the description of such differing terms and conditions set forth in such prospectus supplement or applicable free writing prospectus with respect to such warrants.

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TAXATION

The material U.S. federal income tax consequences relating to the purchase, ownership and disposition of any of the securities offered by this prospectus will be set forth in the prospectus supplement pertaining to those securities.

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LEGAL MATTERS

Unless the applicable prospectus supplement indicates otherwise, the validity of our ordinary shares, including ordinary shares in the form of the ADSs, and certain other matters governed by French law will be passed on for us by Gide Loyrette Nouel A.A.R.P.I. Unless otherwise indicated in any prospectus supplement, Cooley LLP, Boston, Massachusetts, will be representing us in regards to certain matters governed by U.S. law in connection with any offering. Additional legal matters may be passed upon for any underwriters, dealers or agents by counsel that we will name in the applicable prospectus supplement.

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EXPERTS

The consolidated financial statements of ERYTECH Pharma S.A. as of and for the years ended December 31, 2019, 2018 and 2017 appearing in our Annual Report on Form 20-F for the year ended December 31, 2019, have been audited by KPMG S.A., independent registered public accounting firm, as set forth in their report thereon, included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such report given on the authority of such firm as experts in accounting and auditing. KPMG S.A.’s report dated March 17, 2020 refers to the change in Erytech Pharma S.A.’s method of accounting for leases on January 1, 2019, due to the adoption of IFRS 16 “Leases.”

The offices of KPMG S.A. are located at Tour Eqho, 2 avenue Gambetta, CS 60055, 92066 Paris la Défense Cedex.

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ENFORCEMENT OF CIVIL LIABILITIES

We are a corporation organized under the laws of France. Half of our directors are citizens and residents of countries other than the United States, and the majority of our assets are located outside of the United States. We have appointed an agent for service of process in the United States; however, it may be difficult for investors:

Nevertheless, a final judgment for the payment of money rendered by any federal or state court in the United States based on civil liability, whether or not predicated solely upon the U.S. federal securities laws, would be recognized and enforced in France provided that a French judge considers that this judgment meets the French legal requirements concerning the recognition and the enforcement of foreign judgments and is capable of being immediately enforced in the United States. A French court is therefore likely to grant the enforcement of a foreign judgment without a review of the merits of the underlying claim, only if (1) that judgment is enforceable in the jurisdiction of the U.S. court which rendered it, (2) that judgement was rendered by a court having jurisdiction over the dispute (the condition will be met if the dispute is clearly connected to the jurisdiction of the U.S. court and French courts did not have exclusive jurisdiction over the matter), (3) that judgment does not contravene French international public order and public policy, including the right to due process and (4) the U.S. judgment is not tainted with fraud and is not incompatible with a judgment rendered by a French court in the same matter, or with an earlier judgment rendered by a foreign court in the same matter.

In addition, French law guarantees full compensation for the harm suffered but is limited to the actual damages, so that the victim does not suffer or benefit from the situation. Such system excludes damages such as, but not limited to, punitive and exemplary damages.

As a result, the enforcement, by U.S. investors, of any judgments obtained in U.S. courts in civil and commercial matters, including judgments under the U.S. federal securities law against us or members of our board of directors, officers or certain experts named herein who are residents of France or countries other than the United States would be subject to the above conditions.

Finally, there may be doubt as to whether a French court would impose civil liability on us, the members of our board of directors, our officers or certain experts named herein in an original action predicated solely upon the U.S. federal securities laws brought in a court of competent jurisdiction in France against us or such members, officers or experts, respectively.

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WHERE YOU CAN FIND MORE INFORMATION

We are subject to the reporting requirements of the Exchange Act that are applicable to a foreign private issuer. Under the Exchange Act, we file annual reports on Form 20-F and other information with the SEC. We also furnish to the SEC under cover of Form 6-K material information required to be made public in France, filed with and made public by any stock exchange on which we are listed or distributed by us to our shareholders. As a foreign private issuer, we are exempt from, among other things, the rules under the Exchange Act prescribing the furnishing and content of proxy statements and our officers, directors and principal shareholders are exempt from the reporting and short-swing profit recovery provisions contained in Section 16 of the Exchange Act.

The SEC maintains a web site that contains reports and information statements and other information about issuers, such as us, who file electronically with the SEC. The address of that website is www.sec.gov.

This prospectus and any prospectus supplement are part of a registration statement on Form F-3 that we filed with the SEC and do not contain all of the information in the registration statement. The full registration statement may be obtained from the SEC or us, as provided below. Forms of the documents establishing the terms of the offered securities are or may be filed as exhibits to the registration statement of which this prospectus forms a part. Statements in this prospectus or any prospectus supplement about these documents are summaries and each statement is qualified in all respects by reference to the document to which it refers. You should refer to the actual documents for a more complete description of the relevant matters. You may inspect a copy of the registration statement through the SEC’s website, as provided above.

We also maintain a website at www.erytech.com through which you can access our SEC filings. The information set forth on our website is not part of this prospectus.

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INCORPORATION OF DOCUMENTS BY REFERENCE

The SEC allows us to “incorporate by reference” information that we file with them. Incorporation by reference allows us to disclose important information to you by referring you to those other documents. The information incorporated by reference is an important part of this prospectus, and information that we file later with the SEC will automatically update and supersede this information. We filed a registration statement on Form F-3 under the Securities Act of 1933, as amended, with the SEC with respect to the securities we may offer pursuant to this prospectus. This prospectus omits certain information contained in the registration statement, as permitted by the SEC. You should refer to the registration statement, including the exhibits, for further information about us and the securities we may offer pursuant to this prospectus. Statements in this prospectus regarding the provisions of certain documents filed with, or incorporated by reference in, the registration statement are not necessarily complete and each statement is qualified in all respects by that reference. Copies of all or any part of the registration statement, including the documents incorporated by reference or the exhibits, may be obtained upon payment of the prescribed rates at the offices of the SEC listed above in “Where You Can Find More Information.” The documents we are incorporating by reference are:

We are also incorporating by reference all subsequent Annual Reports on Form 20-F that we file with the SEC and certain reports on Form 6-K that we furnish to the SEC after the date of this prospectus (if they state that they are incorporated by reference into this prospectus) prior to the termination of this offering. In all cases, you should rely on the later information over different information included in this prospectus or any accompanying prospectus supplement.

Unless expressly incorporated by reference, nothing in this prospectus shall be deemed to incorporate by reference information furnished to, but not filed with, the SEC. Copies of all documents incorporated by reference in this prospectus, other than exhibits to those documents unless such exhibits are specifically incorporated by reference in this prospectus, will be provided at no cost to each person, including any beneficial owner, who receives a copy of this prospectus on the written or oral request of that person made to:

ERYTECH Pharma S.A.

60 Avenue Rockefeller

69008 Lyon France

+33 4 78 74 4438

You may also access these documents on our website, www.erytech.com. The information contained on, or that can be accessed through, our website is not a part of this prospectus. We have included our website address in this prospectus solely as an inactive textual reference.

You should rely only on information contained in, or incorporated by reference into, this prospectus. We have not authorized anyone to provide you with information different from that contained in this prospectus or incorporated by reference in this prospectus. We are not making offers to sell the securities in any jurisdiction in which such an offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make such offer or solicitation.

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EXPENSES ASSOCIATED WITH REGISTRATION

The following is an estimate of the expenses (all of which are to be paid by us) that we may incur in connection with the securities being registered hereby.

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$100,000,000

American Depositary Shares representing Ordinary Shares

Warrants to Purchase Ordinary Shares or American Depositary Shares

PROSPECTUS

                    , 2020

The information in this prospectus is not complete and may be changed. We may not sell these securities or accept an offer to buy these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities, and it is not soliciting offers to buy these securities in any jurisdiction where such offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED SEPTEMBER 21, 2020

PROSPECTUS

Up to $30,000,000

American Depositary Shares representing Ordinary Shares

We have entered into a sales agreement, or the sales agreement, with Cowen and Company LLC, or Cowen, relating to the sale of American Depositary Shares, or ADSs, representing ordinary shares. In accordance with the terms of the sales agreement, we may offer and sell up to $30,000,000 of our ADSs, from time to time through Cowen acting as sales agent.

Our ADSs are listed on the Nasdaq Global Select Market under the symbol “ERYP.” On September 17, 2020, the last reported sale price of our ADSs was $7.47 per ADS.

Sales of our securities, if any, under this prospectus may be made by any method that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended, or the Securities Act. Cowen is not required to sell any specific number or dollar amount of securities, but will act as a sales agent using commercially reasonable efforts consistent with its normal trading and sales practices and applicable state and federal laws, rules and regulations and the rules of the Nasdaq Stock Market LLC, on mutually agreed terms between Cowen and us. There are no minimum sale requirements, and there is no arrangement for funds to be received in any escrow, trust or similar arrangement.

The compensation payable to Cowen for sales of securities sold pursuant to the sales agreement will be an amount equal to 3.0% of the gross proceeds of any ADSs sold under the sales agreement. See “Plan of Distribution” for additional information regarding compensation to be paid to Cowen. In connection with the sale of the ADSs on our behalf, Cowen will be deemed to be an “underwriter” within the meaning of the Securities Act and the compensation of Cowen will be deemed to be underwriting commissions or discounts. We have also agreed to provide indemnification and contribution to Cowen with respect to certain liabilities, including liabilities under the Securities Act or the Securities Exchange Act of 1934, as amended, or the Exchange Act.

Under the authority granted by our shareholders to conduct the offering, the ADSs that we are offering may only be purchased initially by (i) natural or legal entities, governed by French or foreign law, that invest on a regular basis in the pharmaceutical, biotechnological or medical technology sectors and (ii) companies, institutions or entities, whatever their form, governed by French or foreign law, that carry out a significant part of their activities in the pharmaceutical, cosmetic or chemical sectors or in medical devices and/or technology or in research in these sectors.

Investing in our securities involves a high degree of risk. You should review carefully the risks and uncertainties described under the heading “Risk Factors” on page S-6 of this prospectus and in the documents that are incorporated by reference into this prospectus.

Neither the Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

Cowen

The date of this prospectus is                     , 2020.

TABLE OF CONTENTS

ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement on Form F-3 that we filed with the Securities and Exchange Commission, or SEC, utilizing a “shelf” registration process. Under this shelf registration process, we may from time to time sell ADSs representing our ordinary shares having an aggregate offering price of up to $30.0 million under this prospectus at prices and on terms to be determined by market conditions at the time of the offering.

This prospectus and the documents incorporated into this prospectus by reference include important information about us, the securities being offered and other information you should know before investing in our securities. To the extent there is a conflict between the information contained in this prospectus, on the one hand, and the information contained in any document incorporated by reference into this prospectus that was filed with the SEC before the date of this prospectus, on the other hand, you should rely on the information in this prospectus. If any statement in one of these documents is inconsistent with a statement in another document having a later date (for example, a document incorporated by reference in this prospectus), the statement in the document having the later date modifies or supersedes the earlier statement. Any statement so modified or superseded will not be deemed, except as so modified or superseded, to constitute a part of this prospectus.

You should rely only on the information contained in or incorporated by reference in this prospectus and in any free writing prospectus that we authorized for use in connection with this offering. We have not, and the sales agent has not, authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the sales agent is not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus, the documents incorporated by reference in this prospectus and in any free writing prospectus that we have authorized for use in connection with this offering, is accurate only as of the date of those respective documents. Our business, financial condition, results of operations and prospects may have changed since those dates. You should read this prospectus, the documents incorporated by reference in this prospectus, and any free writing prospectus that we have authorized for use in connection with this offering, in their entirety before making an investment decision.

We further note that the representations, warranties and covenants made by us in any agreement that is filed as an exhibit to any document that is incorporated by reference in this prospectus were made solely for the benefit of the parties to such agreement, including, in some cases, for the purpose of allocating risk among the parties to such agreements, and should not be deemed to be a representation, warranty or covenant to you. Moreover, such representations, warranties or covenants were accurate only as of the date when made. Accordingly, such representations, warranties and covenants should not be relied on as accurately representing the current state of our affairs.

Unless otherwise indicated, all references in this prospectus to “ERYTECH,” “the company,” “our company,” “we,” “us” and “our” refer to ERYTECH Pharma S.A. and its consolidated subsidiary.

i

PRESENTATION OF FINANCIAL AND OTHER INFORMATION

We present our consolidated financial statements in euros and in accordance with IFRS. None of the financial statements incorporated by reference into this prospectus were prepared in accordance with generally accepted accounting principles in the United States.

Unless otherwise specified, all monetary amounts are in euros. All references in this prospectus to “$,” “US$,” “U.S.$,” “U.S. dollars,” “dollars” and “USD” mean U.S. dollars and all references to “€” and “euros,” mean euros, unless otherwise noted. Throughout this prospectus, references to ADSs mean ADSs or ordinary shares represented by such ADSs, as the case may be.

We have made rounding adjustments to some of the figures included in this prospectus. Accordingly, numerical figures shown as totals in some tables may not be an arithmetic aggregation of the figures that preceded them.

ii

S-1

S-2

S-3

S-4

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RISK FACTORS

Investing in our securities involves a high degree of risk. You should carefully review the risks and uncertainties described below and under the heading “Risk Factors” in our Annual Report on Form 20-F for the year ended December 31, 2019 as updated by our subsequent filings, some of which are incorporated by reference into this prospectus, before deciding whether to purchase any of the securities being registered pursuant to the registration statement of which this prospectus is a part. Each of the risk factors could adversely affect our business, results of operations, financial condition and cash flows, as well as adversely affect the value of an investment in our securities, and the occurrence of any of these risks might cause you to lose all or part of your investment. Additional risks not presently known to us or that we currently believe are immaterial may also significantly impair our business operations. Please also read carefully the section below titled “Special Note Regarding Forward-Looking Statements.”

You may experience immediate and substantial dilution in the net tangible book value per ADS of your investment.

The offering price per ADS in this offering may exceed the net tangible book value per ADS outstanding prior to this offering. After giving effect to the sale of ADSs in the aggregate amount of $30.0 million at an assumed offering price of $7.47 per ADS, the last reported sale price of our ADSs on September 17, 2020 on the Nasdaq Global Select Market, and after deducting commissions and estimated offering expenses, our as adjusted net tangible book value as of June 30, 2020 would have been $85.3 million, or $3.88 per ADS. You will experience additional dilution at the end of the vesting period for our free shares that we have granted, and upon exercise of any outstanding warrants or options to purchase ordinary shares, or if we otherwise issue additional ordinary shares or ADSs below the offering price. See the section titled “Dilution” below for a more detailed illustration of the dilution you would incur if you participate in this offering. Because the sales of the securities offered hereby will be made directly into the market or in negotiated transactions, the prices at which we sell these securities will vary and these variations may be significant. Purchasers of the securities we sell, as well as our existing shareholders, will experience significant dilution if we sell the securities at prices significantly below the price at which they invested.

Raising additional capital, including as a result of this offering, may cause dilution to our shareholders, restrict our operations or require us to relinquish rights to our product candidates.

Until such time, if ever, as we can generate substantial revenue from the sale of our product candidates, we expect to finance our cash needs through a combination of equity offerings, debt financing, collaborations, strategic alliances and licensing arrangements. To the extent that we raise additional capital through the sale of equity securities, including from this offering, or convertible debt securities, your ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a shareholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.

If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may be required to relinquish valuable rights to our research programs or product candidates or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings or other arrangements with third parties when needed, we may be required to delay, limit, reduce or terminate our drug development or future commercialization efforts or grant rights to third parties to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

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We have broad discretion in the use of the net proceeds from this offering and may use them in ways with which you do not agree and in ways that may not increase the value of your investment.

Our management will have broad discretion in the application of the net proceeds that we receive from this offering. We may spend or invest these proceeds in a way with which our shareholders and ADS holders disagree. The failure by our management to apply these funds effectively could harm our business and financial condition. Pending their use, we may invest the net proceeds from this offering in a manner that does not produce income or that loses value. These investments may not yield a favorable return to our investors.

You may not be able to exercise your right to vote the ordinary shares underlying your ADSs.

Holders of ADSs may exercise voting rights with respect to the ordinary shares represented by the ADSs only in accordance with the provisions of the amended and restated deposit agreement. The amended and restated deposit agreement provides that, upon receipt of notice of any meeting of holders of our ordinary shares, the depositary will fix a record date for the determination of ADS holders who shall be entitled to give instructions for the exercise of voting rights. Upon timely receipt of notice from us, if we so request, the depositary shall distribute to the holders as of the record date (1) the notice of the meeting or solicitation of consent or proxy sent by us and (2) a statement as to the manner in which instructions may be given by the holders.

Purchasers of ADSs in the offering may instruct the depositary of their ADSs to vote the ordinary shares underlying their ADSs. Otherwise, purchasers of ADSs in the offering will not be able to exercise voting rights unless they withdraw the ordinary shares underlying the ADSs they hold. However, a holder of ADSs may not know about the meeting far enough in advance to withdraw those ordinary shares. If we ask for a holder of ADSs’ instructions, the depositary, upon timely notice from us, will notify him or her of the upcoming vote and arrange to deliver our voting materials to him or her. We cannot guarantee to any holder of ADSs that he or she will receive the voting materials in time to ensure that he or she can instruct the depositary to vote his or her ordinary shares or to withdraw his or her ordinary shares so that he or she can vote them. If the depositary does not receive timely voting instructions from a holder of ADSs, it may give a proxy to a person designated by us to vote the ordinary shares underlying his or her ADSs. In addition, the depositary and its agents are not responsible for failing to carry out voting instructions or for the manner of carrying out voting instructions. This means that a holder of ADSs may not be able to exercise his or her right to vote, and there may be nothing he or she can do if the ordinary shares underlying his or her ADSs are not voted as he or she requested.

Purchasers of ADSs in the offering may not be directly holding our ordinary shares.

A holder of ADSs will not be treated as one of our shareholders and will not have direct shareholder rights. French law governs our shareholder rights. The depositary will be the holder of the ordinary shares underlying ADSs held by purchasers of ADSs in the offering. Purchasers of ADSs in the offering will have ADS holder rights. The amended and restated deposit agreement among us, the depositary and purchasers of ADSs in the offering, as an ADS holder, and all other persons directly and indirectly holding ADSs, sets out ADS holder rights, as well as the rights and obligations of the depositary.

The right as a holder of ADSs to participate in any future preferential subscription rights or to elect to receive dividends in shares may be limited, which may cause dilution to the holdings of purchasers of ADSs in the offering.

According to French law, if we issue additional securities for cash, current shareholders will have preferential subscription rights for these securities on a pro rata basis unless they waive those rights at an extraordinary meeting of our shareholders (by a two-thirds majority vote) or individually by each shareholder. However, our ADS holders in the United States will not be entitled to exercise or sell such rights unless we register the rights and the securities to which the rights relate under the Securities Act or an exemption from the registration requirements is available. In addition, the amended and restated deposit agreement provides that the depositary

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will not make rights available to purchasers of ADSs in the offering unless the distribution to ADS holders of both the rights and any related securities are either registered under the Securities Act or exempted from registration under the Securities Act. Further, if we offer holders of our ordinary shares the option to receive dividends in either cash or shares, under the amended and restated deposit agreement the depositary may require satisfactory assurances from us that extending the offer to holders of ADSs does not require registration of any securities under the Securities Act before making the option available to holders of ADSs. We are under no obligation to file a registration statement with respect to any such rights or securities or to endeavor to cause such a registration statement to be declared effective. Moreover, we may not be able to establish an exemption from registration under the Securities Act. Accordingly, ADS holders may be unable to participate in our rights offerings or to elect to receive dividends in shares and may experience dilution in their holdings. In addition, if the depositary is unable to sell rights that are not exercised or not distributed or if the sale is not lawful or reasonably practicable, it will allow the rights to lapse, in which case you will receive no value for these rights.

Purchasers of ADSs in the offering may be subject to limitations on the transfer of their ADSs and the withdrawal of the underlying ordinary shares.

ADSs, which may be evidenced by ADRs, are transferable on the books of the depositary. However, the depositary may close its books at any time or from time to time when it deems expedient in connection with the performance of its duties. The depositary may refuse to deliver, transfer or register transfers of ADSs generally when our books or the books of the depositary are closed, or at any time if we or the depositary think it is advisable to do so because of any requirement of law, government or governmental body, or under any provision of the amended and restated deposit agreement, or for any other reason subject to a holder of ADSs’ right to cancel his or her ADSs and withdraw the underlying ordinary shares. Temporary delays in the cancellation of ADSs and withdrawal of the underlying ordinary shares may arise because the depositary has closed its transfer books or we have closed our transfer books, the transfer of ordinary shares is blocked to permit voting at a shareholders’ meeting or we are paying a dividend on our ordinary shares. In addition, a holder of ADSs may not be able to cancel his or her ADSs and withdraw the underlying ordinary shares when he or she owes money for fees, taxes and similar charges and when it is necessary to prohibit withdrawals in order to comply with any laws or governmental regulations that apply to ADSs or to the withdrawal of ordinary shares or other deposited securities. See the section of this prospectus titled “Description of American Depositary Shares.”

U.S. holders of ADSs may suffer adverse tax consequences if we are characterized as a passive foreign investment company.

Based on the composition of our gross income, assets, activities and market capitalization in 2019, the nature of our business and due to fluctuations in our stock price, we believe that we were characterized as a passive foreign investment company, or PFIC, for our taxable year ended December 31, 2019. Based on the expected nature and composition of our gross income, assets, activities and market capitalization for our taxable year ending December 31, 2020, we may be characterized as a PFIC for the taxable year ending December 31, 2020. Because the calculation of the value of our assets may be based in part on the value of our ADSs, the value of which may fluctuate considerably, our PFIC status is difficult to predict. There can be no assurance that we will not be considered a PFIC for the current year or any future taxable year. A separate determination must be made after the close of each taxable year as to whether we are a PFIC for that year. As a result, our PFIC status may change from year to year. Our status as a PFIC will depend on the composition of our income (including whether we receive certain non-refundable grants or subsidies and whether such amounts and reimbursements of certain refundable research tax credits will constitute gross income for purposes of the PFIC income test) and the composition and value of our assets, which may be determined in large part by reference to the market value of the ADSs and our ordinary shares, which may be volatile, from time to time. Our status may also depend, in part, on how quickly we utilize the cash proceeds from this offering in our business. Our U.S. counsel expresses no opinion regarding our conclusions or our expectations regarding our PFIC status.

Generally, if, for any taxable year, at least 75% of our gross income is passive income, or at least 50% of the value of our assets is attributable to assets that produce passive income or are held for the production of passive

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income, including cash, we will be characterized as a PFIC for U.S. federal income tax purposes. For purposes of these tests, passive income includes dividends, interest, and gains from the sale or exchange of investment property and rents and royalties other than rents and royalties which are received from unrelated parties in connection with the active conduct of a trade or business. If we are characterized as a PFIC, U.S. holders of the ADSs may suffer adverse tax consequences, including having gains realized on the sale of the ADSs treated as ordinary income, rather than capital gain, the loss of the preferential rate applicable to dividends received on the ADSs by individuals who are U.S. holders, and having interest charges apply to distributions by us and the proceeds of sales of the ADSs. See “Material United States Federal Income and French Tax Considerations—Material U.S. Federal Income Tax Considerations—Passive Foreign Investment Company Considerations.”

If a United States person is treated as owning at least 10% of our ordinary shares, such United States person may be subject to adverse U.S. federal income tax consequences.

If a U.S. holder (as defined below under “Material United States Federal Income and French Tax Considerations”) is treated as owning (directly, indirectly or constructively) at least 10% of the value or voting power of our ordinary shares, such U.S. holder will be treated as a “United States shareholder” with respect to each “controlled foreign corporation” in our group (if any). Because our group includes at least one U.S. subsidiary (ERYTECH Pharma, Inc.), if we were to form or acquire any non-U.S. subsidiaries in the future, they will be treated as controlled foreign corporations. A United States shareholder of a controlled foreign corporation will be required to annually report and include in its U.S. taxable income its pro rata share of “subpart F income” and investments in U.S. property by the controlled foreign corporations and its “global intangible low-taxed income,” regardless of whether we make any distributions. An individual that is a United States shareholder with respect to a controlled foreign corporation generally will not be allowed certain tax deductions or foreign tax credits that are available to a United States shareholder that is a domestic corporation. We cannot provide any assurance that we will furnish to any United States shareholder the information required to comply with the reporting and tax-paying obligations discussed above. Failure to comply with such reporting obligations may subject a U.S. holder that is a United States shareholder to significant monetary penalties and may prevent the statute of limitations with respect to your U.S. federal income tax return for the year for which reporting was due from starting. U.S. holders should consult their tax advisors regarding the potential application of these rules to their investment in our ADSs.

Future changes to tax laws could materially adversely affect our company and reduce net returns to our shareholders.

Our tax treatment is subject to the enactment of, or changes in, tax laws, regulations and treaties, or the interpretation thereof, tax policy initiatives and reforms under consideration and the practices of tax authorities in jurisdictions in which we operate, including those related to the Organization for Economic Co-Operation and Development’s Base Erosion and Profit Shifting Project, the European Commission’s state aid investigations and other initiatives. Such changes may include (but are not limited to) the taxation of operating income, investment income, dividends received or (in the specific context of withholding tax) dividends paid. We are unable to predict what tax reform may be proposed or enacted in the future or what effect such changes would have on our business, but such changes, to the extent they are brought into tax legislation, regulations, policies or practices, could affect our financial position and overall or effective tax rates in the future in countries where we have operations, reduce post-tax returns to our shareholders, and increase the complexity, burden and cost of tax compliance.

Tax authorities may disagree with our positions and conclusions regarding certain tax positions, resulting in unanticipated costs, taxes or non-realization of expected benefits.

A tax authority may disagree with tax positions that we have taken, which could result in increased tax liabilities. For example, the U.S. Internal Revenue Service or another tax authority could challenge our allocation of income by tax jurisdiction and the amounts paid between our affiliated companies pursuant to our intercompany arrangements and transfer pricing policies, including amounts paid with respect to our intellectual property

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development. Similarly, a tax authority could assert that we are subject to tax in a jurisdiction where we believe we have not established a taxable connection, often referred to as a “permanent establishment” under international tax treaties, and such an assertion, if successful, could increase our expected tax liability in one or more jurisdictions. A tax authority may take the position that material income tax liabilities, interest and penalties are payable by us, in which case, we expect that we might contest such assessment. Contesting such an assessment may be lengthy and costly and if we were unsuccessful in disputing the assessment, the implications could increase our anticipated effective tax rate, where applicable.

Changes in European regulations may limit our ability to attract and obtain additional financing sources outside France.

As a result of the implementation of Regulation (EU) 2019/452 of the European Parliament and of the Council of March 19, 2019 establishing a framework for the screening of foreign direct investments into the European Union, the list of sectors of activity, which are the subject of a control by the French authorities, has been extended to cover foreign investments in additional economic sectors. Prior authorization of the Minister of Economy is required for investments in: (i) businesses participating, even occasionally, under the exercise of French official authority, (ii) businesses that would be liable to negatively impact public order, public security or the national defense interest, as well as (iii) business focused on research and development activities relating to critical technologies.

A foreign direct investment will be subject to authorization where there is an (i) acquisition of control, under article L.233-3 of the French Commercial Code, of an entity subject to French law, (ii) where a party acquires all or part of a branch of an entity subject to French law, (iii) or where a party crosses directly or indirectly, and acting alone or in concert, the 25% voting rights threshold of an entity subject to French law.

The French government has adapted the foreign investment control procedure in France within the context of the ongoing COVID-19 pandemic in two ways: (i) the inclusion, by a ministerial order of April 27, 2020, of biotechnologies in the list of critical technologies and (ii) the addition, by a decree of July 22, 2020, of the threshold of 10% of voting rights of a company subject to French law whose securities are listed on a stock exchange as triggering the control procedure.

The Decree of July 22, 2020 currently provides that this new 10% threshold will be effective until December 31, 2020 and a rapid review procedure for foreign investments exceeding this threshold.

If an investment in the company subject to prior authorization is realized without this authorization having been granted, the Minister will be able to order the investor, subject to a fine for non-performance, to: (i) file an authorization application, (ii) restore the previous situation, or (iii) amend the investment and, if he considers that the conditions for the authorization have not been met, the Minister may also revoke the authorization or order the investor, subject to a fine for non-performance, to comply with the authorization. In both cases, he may also take protective measures.

Furthermore, an investor who has carried out a transaction without prior authorization or has not complied with the orders or measures set by the French Minister of Economy will be liable to a fine of up to the greater of the following amounts: (i) double the amount of the irregular investment, (ii) 10% of the turnover (excluding taxes) of the company, (iii) five million euros for legal entities, and (iv) one million euros for individuals.

Inclusion of biotechnologies in the list of critical technologies subject to foreign investment control procedure is a risk for the Company in that it constitutes a potential disincentive for foreign investors and could therefore limit access to foreign sources of funding. These recent changes apply from the date of their entry into force and therefore do not an impact on investments exceeding the 10% voting rights threshold realized by foreign investors before the date of July 22, 2020.

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We have entered into a note and warrant consisting of tranches of convertible bonds with warrants attached (OCABSA) and may encounter adverse effects as a result thereof.

On June 24, 2020, we signed an agreement with the Luxembourg-based European High Growth Opportunities Securitization Fund represented by its asset manager, European High Growth Opportunities Manco SA for the issuance of convertible notes whereby the investor committed to subscribe up to a maximum of €60 million in the event of conversion of all the notes, subject to the regulatory limit of 20% dilution, currently representing approximately €48 million, including the two tranches issued in July and August 2020, unless further authorized. The notes come with share warrants representing 10% of the nominal amount of the issued notes whose exercise price will reflect a 20% premium over the lowest volume-weighted average daily price of the share over the reference period preceding the issue of the first tranche.

By using this financing program, we may encounter the following adverse effects:

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and the documents incorporated by reference contain forward-looking statements. These are based on our management’s current beliefs, expectations and assumptions about future events, conditions and results and on information currently available to us. Discussions containing these forward-looking statements may be found, among other places, in the sections titled “Information on the Company,” “Risk Factors” and “Operating and Financial Review and Prospects” incorporated by reference from our most recent Annual Report on Form 20-F, as well as any amendments thereto, filed with the SEC.

In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “could,” “estimate,” “expects,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “project,” “should,” “will,” “would” or the negative or plural of those terms, and similar expressions intended to identify statements about the future, although not all forward-looking statements contain these words. These statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to be materially different from the information expressed or implied by these forward-looking statements.

Any statements in this prospectus or incorporated herein by reference, about our expectations, beliefs, plans, objectives, assumptions or future events or performance are not historical facts and are forward-looking statements. Within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act, these forward-looking statements include statements regarding:

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You should refer to the “Risk Factors” section contained in this prospectus and any related free writing prospectus, and in the documents that are incorporated by reference into this prospectus, for a discussion of important factors that may cause our actual results to differ materially from those expressed or implied by our forward-looking statements. Given these risks, uncertainties and other factors, many of which are beyond our control, we cannot assure you that the forward-looking statements in this prospectus will prove to be accurate, and you should not place undue reliance on these forward-looking statements. Furthermore, if our forward-looking statements prove to be inaccurate, the inaccuracy may be material. In light of the significant uncertainties in these forward-looking statements, you should not regard these statements as a representation or warranty by us or any other person that we will achieve our objectives and plans in any specified time frame, or at all.

Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to revise any forward-looking statements to reflect events or developments occurring after the date of this prospectus, even if new information becomes available in the future.

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USE OF PROCEEDS

We may issue and sell our ADSs representing our ordinary shares, having aggregate sales proceeds of up to $30.0 million from time to time. Because there is no minimum offering amount required as a condition to close this offering, the actual total public offering amount, commissions and proceeds to us, if any, are not determinable at this time. There can be no assurance that we will sell any shares under or fully utilize the sales agreement with Cowen as a source of financing.

We currently intend to use the net proceeds from this offering primarily to fund the research and development of our product candidates, for working capital and for general corporate purposes. We may also use a portion of the net proceeds to acquire or invest in businesses, products or technologies that we believe are complementary to our own, although we have no current plans, commitments or agreements with respect to any acquisitions as of the date of this prospectus. Pending the use of net proceeds, we intend to invest the net proceeds in short-term, investment-grade, interest bearing obligations, certificates of deposit or direct or guaranteed obligations of the United States government.

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DILUTION

Our net tangible book value as of June 30, 2020 was €50.4 million ($56.7 million, with this and all other convenience translations presented in this section, “Dilution,” based on the noon buying rate of the Federal Reserve Bank of New York in effect as of June 30, 2020, of €1.00 = $1.1237), or €2.81 per ordinary share (equivalent to $3.16 per ADS). Net tangible book value per ordinary share is determined by dividing (1) our total assets less our intangible assets and our total liabilities by (2) 17,956,115 ordinary shares outstanding as of June 30, 2020.

After giving effect to the sale of our ADSs in the aggregate amount of $30.0 million at an assumed offering price of $7.47 per ADS, the last reported sale price of our ADSs on the Nasdaq Global Select Market on September 17, 2020, and after deducting estimated commissions and offering expenses payable by us, our as adjusted net tangible book value as of June 30, 2020 would have been €75.9 million, or €3.45 per ordinary share, equivalent to $3.88 per ordinary share and per ADS. This represents an immediate increase in net tangible book value of $0.72 per ordinary share and ADS to existing shareholders and an immediate decrease in net tangible book value of $3.59 per ordinary share and ADSs to investors purchasing in this offering.

The following table illustrates this calculation on a per ADS basis. The information is illustrative only and will adjust based on the actual prices at which ADSs are sold, the actual number of ADSs sold and other terms of the offering determined at the time our ADSs are sold pursuant to this prospectus.

The number of ordinary shares (including ordinary shares in the form of ADSs) outstanding as of June 30, 2020 was 17,956,115, which excludes:

The ADSs subject to the sales agreement with Cowen will be sold from time to time at various prices. An increase of $1.00 per ADS in the price at which the ADSs are sold from the assumed offering price of $7.47 per ADS shown in the table above, assuming all of our securities in the aggregate amount of $30.0 million during the term of the sales agreement with Cowen are sold at that price, would increase our as adjusted net tangible book value per ADS after the offering to $3.97 per ADS, which would represent a decrease in net tangible book value per ADS to new investors in this offering of $4.50 per ADS, after deducting commissions and estimated offering expenses payable by us. A decrease of $1.00 per ADS in the price at which the ADSs are sold from the assumed offering price of $7.47 per ADS shown in the table above, assuming all of our securities in the aggregate amount

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of $30.0 million during the term of the sales agreement with Cowen are sold at that price, would decrease our as adjusted net tangible book value per ADS after the offering to $3.77 per ADS, which would represent a decrease in net tangible book value per ADS to new investors in this offering of $2.70 per ADS, after deducting commissions and estimated offering expenses payable by us. This information is supplied for illustrative purposes only.

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MATERIAL UNITED STATES FEDERAL INCOME AND FRENCH TAX CONSIDERATIONS

The following describes material U.S. federal income tax and French tax considerations relating to the acquisition, ownership and disposition of ADSs by a U.S. holder (as defined below). This summary does not address all U.S. federal income tax and French tax matters that may be relevant to a particular U.S. holder. This summary does not address tax considerations applicable to a holder of ADSs that may be subject to special tax rules including, without limitation, the following:

For the purposes of this description, a “U.S. holder” is a beneficial owner of ADSs that is (or is treated as), for U.S. federal income tax purposes:

If a partnership (or any other entity treated as a partnership for U.S. federal income tax purposes) holds ADSs, the U.S. federal income tax consequences relating to an investment in the ADSs will depend in part upon the status of the partner and the activities of the partnership. Such a partner or partnership should consult its tax advisor regarding the U.S. federal income tax considerations of acquiring, owning and disposing of the ADSs in its particular circumstances.

The discussion in this section is based in part upon the representations of the depositary and the assumption that each obligation in the amended and restated deposit agreement and any related agreement will be performed in accordance with its terms.

Persons considering an investment in the ADSs should consult their own tax advisors as to the particular tax consequences applicable to them relating to the acquisition, ownership and disposition of the ADSs, including the applicability of U.S. federal, state and local tax laws, French tax laws and other non-U.S. tax laws.

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Material French Tax Considerations

The following describes the material French income tax consequences to U.S. holders of purchasing, owning and disposing of our ADSs and, unless otherwise noted, this discussion is the opinion of Gide Loyrette Nouel A.A.R.P.I, our French tax counsel, insofar as it relates to matters of French tax law and legal conclusions with respect to those matters.

This discussion does not purport to be a complete analysis or listing of all potential tax effects of the acquisition, ownership or disposition of our ADSs to any particular investor, and does not discuss tax considerations that arise from rules of general application or that are generally assumed to be known by investors. All of the following is subject to change. Such changes could apply retroactively and could affect the consequences described below.

The description of the French income tax and wealth tax consequences set forth below is based on the Convention Between the Government of the United States of America and the Government of the French Republic for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income and Capital of August 31, 1994, or the Treaty, which came into force on December 30, 1995 (as amended by any subsequent protocols, including the protocol of January 13, 2009), and the tax guidelines issued by the French tax authorities in force as of the date of this prospectus supplement.

This discussion applies only to investors that are entitled to Treaty benefits under the “Limitation on Benefits” provision contained in the Treaty.

France has recently introduced a comprehensive set of new tax rules applicable to French assets that are held by or in foreign trusts. These rules provide inter alia for the inclusion of trust assets in the settlor’s net assets for the purpose of applying the French real estate wealth tax, for the application of French gift and death duties to French assets held in trust, for a specific tax on capital on the French assets of foreign trusts not already subject to the French real estate wealth tax and for a number of French tax reporting and disclosure obligations. The following discussion does not address the French tax consequences applicable to securities (including ADSs) held in trusts. If ADSs are held in trust, the grantor, trustee and beneficiary are urged to consult their own tax advisor regarding the specific tax consequences of acquiring, owning and disposing of securities (including ADSs).

U.S. holders are urged to consult their own tax advisors regarding the tax consequences of the purchase, ownership and disposition of securities in light of their particular circumstances, especially with regard to the “Limitations on Benefits” provision.

Estate and Gift Taxes and Transfer Taxes

In general, a transfer of securities by gift or by reason of death of a U.S. holder that would otherwise be subject to French gift or inheritance tax, respectively, will not be subject to such French tax by reason of the Convention between the Government of the United States of America and the Government of the French Republic for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Estates, Inheritances and Gifts, dated November 24, 1978 (as amended by the protocol of December 8, 2004), unless (i) the donor or the transferor is domiciled in France at the time of making the gift or at the time of his or her death, or (ii) the securities were used in, or held for use in, the conduct of a business through a permanent establishment or a fixed base in France.

Pursuant to Article 235 ter ZD of the Code général des impôts (French Tax Code, or FTC), purchases of shares or ADSs of a French company listed on a regulated market of the European Union or on a foreign regulated market formally acknowledged by the French Financial Market Authority (AMF) are subject to a 0.3% French tax on financial transactions provided that the issuer’s market capitalization exceeds 1 billion euros as of December 1 of

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the year preceding the taxation year pursuant to Regulations BOI-ANNX-000467-20181217 issued on December 17, 2018. The Nasdaq Global Select Market is not currently acknowledged by the French AMF but this may change in the future. A list of French relevant companies whose market capitalization exceeds 1 billion euros as of December 1 of the year preceding the taxation year is published annually and at least once a year, by the French State. As at December 1, 2019, our market capitalization did not exceed 1 billion euros.

Following the global offering, purchases of our securities may be subject to such tax provided that its market capitalization exceeds 1 billion euros and that the Nasdaq Global Select Market is acknowledged by the French AMF.

In the case where Article 235 ter ZD of the FTC is not applicable, transfers of shares issued by a French company, which is listed on a regulated or organized market within the meaning of the French Financial and Monetary Code, are subject to uncapped registration duties at the rate of 0.1% if the transfer is evidenced by a written statement (“acte”) executed either in France or outside France. Although there is no case law or official guidelines published by the French tax authorities on this point, transfers of ADSs should remain outside of the scope of the aforementioned 0.1% registration duties.

Tax on Sale or Other Disposition

As a matter of principle, under French tax law, a U.S. holder should not be subject to any French tax on any capital gain from the sale, exchange, repurchase or redemption by us of ordinary shares or ADSs, provided such U.S. holder is not a French tax resident for French tax purposes and has not held more than 25% of our dividend rights, known as “droits aux benefices sociaux,” at any time during the preceding five years, either directly or indirectly, and, as relates to individuals, alone or with relatives (as an exception, a U.S holder resident, established or incorporated in a non-cooperative State or territory as defined in Article 238-0 A of the FTC other than those States or territories mentioned in 2° of 2 bis of the same Article 238-0 A should be subject to a 75% withholding tax in France on any such capital gain, regardless of the fraction of the dividend rights it holds).

Under application of the Treaty, a U.S. holder who is a U.S. resident for purposes of the Treaty and entitled to Treaty benefit will not be subject to French tax on any such capital gain unless the ordinary shares or the ADSs form part of the business property of a permanent establishment or fixed base that the U.S. holder has in France. U.S. holders who own ordinary shares or ADSs through U.S. partnerships that are not resident for Treaty purposes are advised to consult their own tax advisors regarding their French tax treatment and their eligibility for Treaty benefits in light of their own particular circumstances. A U.S. holder that is not a U.S. resident for Treaty purposes or is not entitled to Treaty benefit (and in both cases is not resident, established or incorporated in a non-cooperative State or territory as defined in Article 238-0 A of the FTC other than those States or territories mentioned in 2° of 2 bis of the same Article 238-0 A) and has held more than 25% of our dividend rights, known as “droits aux benefices sociaux,” at any time during the preceding five years, either directly or indirectly, and, as relates to individuals, alone or with relatives will be subject to a levy in France at the rate of 12.8% if such U.S. holder is an individual or 28% for corporate bodies or other legal entities (as from January 1, 2020, to be progressively reduced to 25% by 2022). Special rules apply to U.S. holders who are residents of more than one country.

Taxation of Dividends

Dividends paid by a French corporation to non-residents of France are generally subject to French withholding tax at a rate of 12.8% when the recipient is an individual and 28% otherwise (the 28% rate for legal entities will be progressively reduced to 25% by 2022). Dividends paid by a French corporation in a non-cooperative State or territory, as defined in Article 238-0 A of the FTC other than those States or territories mentioned in 2° of 2 bis of the same Article 238-0 A, may be subject to French withholding tax at a rate of 75%. However, eligible U.S. holders, other than individuals subject to the French withholding tax at a rate of 12.8%, entitled to Treaty benefits under the ‘‘Limitation on Benefits’’ provision contained in the Treaty who are U.S. residents, as defined pursuant

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to the provisions of the Treaty, will not be subject to this 28% or 75% withholding tax rate, but may be subject to the withholding tax at a reduced rate (as described below).

Under the Treaty, the rate of French withholding tax on dividends paid to an eligible U.S. holder who is a U.S. resident as defined pursuant to the provisions of the Treaty and whose ownership of the ordinary shares or ADSs is not effectively connected with a permanent establishment or fixed base that such U.S. holder has in France, may be reduced to 15%, or to 5% if such U.S. holder is a corporation and owns directly or indirectly at least 10% of the share capital of the issuer; such U.S. holder may claim a refund from the French tax authorities of the amount withheld in excess of the Treaty rates of 15% or 5%, if any.

For U.S. holders that are not individuals but are U.S. residents, as defined pursuant to the provisions of the Treaty, the requirements for eligibility for Treaty benefits, including the reduced 5% or 15% withholding tax rates contained in the ‘‘Limitation on Benefits’’ provision of the Treaty, are complex, and certain technical changes were made to these requirements by the protocol of January 13, 2009. U.S. holders are advised to consult their own tax advisors regarding their eligibility for Treaty benefits in light of their own particular circumstances. Dividends paid to an eligible U.S. holder may immediately be subject to the reduced rates of 5% or 15% provided that:

Otherwise, dividends paid to a U.S. holder, other than individuals subject to the French withholding tax at a rate of 12.8%, will be subject to French withholding tax at the rate of 28%, or 75% if paid in a non-cooperative State or territory (as defined in Article 238-0 A of the FTC, other than those States or territories mentioned in 2° of 2 bis of the same Article 238-0 A), and then reduced at a later date to 5% or 15%, provided that such holder duly completes and provides the French tax authorities with the treaty forms Form 5000 and Form 5001 before December 31 of the second calendar year following the year during which the dividend is paid.

Certain qualifying pension funds and certain other tax-exempt entities are subject to the same general filing requirements as other U.S. holders except that they may have to supply additional documentation evidencing their entitlement to these benefits.

Form 5000 and Form 5001, together with instructions, will be provided by the depositary to all U.S. holders registered with the depositary. The depositary will arrange for the filing with the French tax authorities of all such forms properly completed and executed by U.S. holders of ordinary shares or ADSs and returned to the depositary in sufficient time so that they may be filed with the French tax authorities before the distribution in order to immediately obtain a reduced withholding tax rate. Otherwise, the depositary must withhold tax at the full rate of 28% or 75% as applicable. In that case, the U.S. holders may claim a refund from the French tax authorities of the excess withholding tax.

Since the withholding tax rate applicable under French domestic law to U.S. holders who are individuals does not exceed the cap provided in the Treaty (i.e. 15%), the 12.8% rate shall apply, without any reduction provided under the Treaty.

Real Estate Wealth Tax

On January 1, 2018, the French wealth tax was replaced with a real estate wealth tax (“impôt sur la fortune immobilière”, or IFI). Individuals holding directly or indirectly through one or more legal entities real estate

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assets or rights with a value exceeding €1,300,000 may fall within the scope of the IFI. A general exclusion applies to real estate assets owned by companies carrying out a commercial or industrial activity when the taxpayer (together with the members of his/her household) holds directly or indirectly less than 10% of the share capital or voting rights of the company. ADSs owned by a U.S. holder should not fall within the scope of the IFI provided that such U.S. holder does not own (together with the members of his/her household) directly or indirectly a shareholding exceeding 10% of the financial rights and voting rights of our share capital. U.S. holders holding directly or indirectly a shareholding exceeding 10% of the financial rights and voting rights of our share capital should seek additional advice.

Material U.S. Federal Income Tax Considerations

This section discusses the material U.S. federal income tax considerations relating to the acquisition, ownership and disposition of ADSs by a U.S. holder who acquires its ADSs pursuant to this offering and holds the ADSs as a capital asset. This description does not address the U.S. federal estate, gift, or alternative minimum tax considerations, or any U.S. state, local, or non-U.S. tax considerations of the acquisition, ownership and disposition of the ADSs.

This description is based on the U.S. Internal Revenue Code of 1986, as amended, or the Code, existing, proposed and temporary U.S. Treasury Regulations promulgated thereunder and administrative and judicial interpretations thereof, in each case as in effect and available on the date hereof. All the foregoing is subject to change, which change could apply retroactively, and to differing interpretations, all of which could affect the tax considerations described below. There can be no assurances that the U.S. Internal Revenue Service, or the IRS, will not take a position different from what is described below concerning the tax consequences of the acquisition, ownership and disposition of the ADSs or that such a position would not be sustained by a court. U.S. holders should consult their own tax advisers concerning the U.S. federal, state, local and non-U.S. tax consequences of acquiring, owning and disposing of the ADSs in their particular circumstances.

In general, and taking into account the earlier assumptions, for U.S. federal income and French tax purposes, a U.S. holder holding ADRs evidencing ADSs will be treated as the owner of the shares presented by the ADRs. Exchanges of shares for ADRs, and ADRs for shares, generally will not be subject to U.S. federal income or to French tax.

Passive Foreign Investment Company Considerations. Based on the composition of our gross income, assets, activities and market capitalization in 2019, the nature of our business and due to fluctuations in our stock price, we believe that we were characterized as a PFIC for our taxable year ending December 31, 2019. Based on the expected nature and composition of our gross income, assets, activities and market capitalization for our taxable year ending December 31, 2020, we may be characterized as a PFIC for the taxable year ending December 31, 2020. Because the calculation of the value of our assets may be based in part on the value of our ADSs, the value of which may fluctuate considerably, our PFIC status may change from year to year and is difficult to predict. There can be no assurance that we will not be considered a PFIC for the current year or any future taxable year. A separate determination must be made after the close of each taxable year as to whether we are a PFIC for that year. As a result, our PFIC status may change from year to year and we have not yet made any determination as to our expected PFIC status for the current year. Our U.S. counsel expresses no opinion regarding our conclusions or our expectations regarding our PFIC status.

If we are classified as a PFIC, a U.S. holder will be subject to special rules discussed below. If we are classified as a PFIC in any year with respect to which a U.S. holder owns the ADSs, we will continue to be treated as a PFIC with respect to the ADSs and such U.S. holder in all succeeding years during which the U.S. holder owns the ADSs, regardless of whether we continue to meet the PFIC tests described below.

We will be classified as a PFIC for U.S. federal income tax purposes in any taxable year in which, after applying certain look-through rules with respect to the income and assets of our subsidiaries, either: (i) at least 75% of the

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gross income is “passive income” or (ii) at least 50% of the average quarterly value of our total gross assets (which would generally be measured by fair market value of our assets, and for which purpose the total value of our assets may be determined in part by the market value of the ADSs and our ordinary shares, which are subject to change) is attributable to assets that produce “passive income” or are held for the production of “passive income.”

Passive income for this purpose generally includes dividends, allocations of income with respect to any partnership interest, interest, royalties, rents, gains from commodities and securities transactions, the excess of gains over losses from the disposition of assets which produce passive income, and includes amounts derived by reason of the temporary investment of funds raised in offerings of the ADSs. If a non-U.S. corporation owns directly or indirectly at least 25% by value of the stock of another corporation or the partnership interests in a partnership, the non-U.S. corporation is treated for purposes of the PFIC tests as owning its proportionate share of the assets of the other corporation or partnership and as receiving directly its proportionate share of the other corporation’s or partnership’s income.

The market value of our assets may be determined in large part by reference to the market price of the ADSs and our ordinary shares, which is likely to fluctuate. In addition, the composition of our income and assets will be affected by how, and how quickly, we use the cash proceeds from this offering in our business. Whether we are a PFIC for any taxable year will depend on our assets and income (including whether we receive certain non-refundable grants or subsidies and whether such amounts and reimbursements of certain refundable research tax credits will constitute gross income for purposes of the PFIC income test) in each year, and because this is a factual determination made annually after the end of each taxable year, there can be no assurance that we will not be considered a PFIC in any taxable year.

If we are a PFIC, and you are a U.S. holder that does not make one of the elections described below, a special tax regime will apply to both (a) any “excess distribution” by us to you (generally, your ratable portion of distributions in any year which are greater than 125% of the average annual distribution received by you in the shorter of the three preceding years or your holding period for the ADSs) and (b) any gain realized on the sale or other disposition of the ADSs. Under this regime, any excess distribution and realized gain will be treated as ordinary income and will be subject to tax as if (i) the excess distribution or gain had been realized ratably over your holding period, (ii) the amount deemed realized in each year had been subject to tax in each year of that holding period at the highest marginal rate for such year (other than income allocated to the current period or any taxable period before we became a PFIC, which would be subject to tax at the U.S. holder’s regular ordinary income rate for the current year and would not be subject to the interest charge discussed below), and (iii) the interest charge generally applicable to underpayments of tax had been imposed on the taxes deemed to have been payable in those years. In addition, dividend distributions made to you will not qualify for the lower rates of taxation applicable to qualified dividends discussed above under “Distributions.”

Certain elections may alleviate some of the adverse consequences of PFIC status and would result in an alternative treatment of the ADSs. If a U.S. holder makes a mark-to-market election, the U.S. holder generally will recognize as ordinary income any excess of the fair market value of the ADSs at the end of each taxable year over their adjusted tax basis, and will recognize an ordinary loss in respect of any excess of the adjusted tax basis of the ADSs over their fair market value at the end of the taxable year (but only to the extent of the net amount of income previously included as a result of the mark-to-market election). If a U.S. holder makes the election, the U.S. holder’s tax basis in the ADSs will be adjusted to reflect these income or loss amounts. Any gain recognized on the sale or other disposition of ADSs in a year when we are a PFIC will be treated as ordinary income and any loss will be treated as an ordinary loss (but only to the extent of the net amount of income previously included as a result of the mark-to-market election). The mark-to-market election is available only if we are a PFIC and the ADSs are “regularly traded” on a “qualified exchange.” The ADSs will be treated as “regularly traded” in any calendar year in which more than a de minimis quantity of the ADSs are traded on a qualified exchange on at least 15 days during each calendar quarter (subject to the rule that trades that have as one of their principal purposes the meeting of the trading requirement as disregarded). The Nasdaq Global Select Market is a qualified

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exchange for this purpose and, consequently, if the ADSs are regularly traded, the mark-to-market election will be available to a U.S. holder.

If we are a PFIC, we expect to provide investors, upon request, a “PFIC Annual Information Statement” with the information required to allow investors to make a “qualified electing fund election” or “QEF Election” for United States federal income tax purposes. U.S. holders should consult their tax advisors to determine whether any of these elections would be available and if so, what the consequences of the alternative treatments would be in their particular circumstances.

If a U.S. holder makes a QEF Election with respect to a PFIC, in lieu of the tax consequences described below, the U.S. holder will be subject to current taxation on its pro rata share of the PFIC’s ordinary earnings and net capital gain for each taxable year that the entity is classified as a PFIC. If a U.S. holder makes a QEF Election with respect to us, any distributions paid by us out of our earnings and profits that were previously included in the U.S. holder’s income under the QEF Election will not be taxable to the holder. A U.S. holder will increase its tax basis in its ADSs by an amount equal to any income included under the QEF Election and will decrease its tax basis by any amount distributed on the ADSs that is not included in the holder’s income. In addition, a U.S. holder will recognize capital gain or loss on the disposition of ADSs in an amount equal to the difference between the amount realized and the holder’s adjusted tax basis in the ADSs. U.S. holders should note that if they make QEF Elections with respect to us and lower-tier PFICs, they may be required to pay U.S. federal income tax with respect to their ADSs for any taxable year significantly in excess of any cash distributions (which are expected to be zero) received on the ADSs for such taxable year. U.S. holders should consult their tax advisors regarding making QEF Elections in their particular circumstances. If a U.S. holder does not make and maintains a QEF election for the U.S. holder’s entire holding period for our ADSs by making the election for the first year in which the U.S. holder owns our ADSs pursuant to this offering, the U.S. holder will be subject to the adverse PFIC rules discussed above unless the U.S. holder can properly make a “purging election” with respect to our ADSs in connection with the U.S. Shareholder’s QEF Election. A purging election may require the U.S. holder to recognize taxable gain on the U.S. holder’s ADSs. No purging election is necessary for a U.S. holder that timely makes a QEF election for the first year in which the U.S. holder acquired our ADSs.

If we are determined to be a PFIC, the general tax treatment for U.S. holders described in this section will apply to indirect distributions and gains deemed to be realized by U.S. holders in respect of any of our subsidiaries that also may be determined to be PFICs.

If a U.S. holder owns ADSs during any taxable year in which we are a PFIC, the U.S. holder generally will be required to file an IRS Form 8621 (Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund) with respect to the company, generally with the U.S. holder’s federal income tax return for that year. If our company is a PFIC for a given taxable year, then you should consult your tax advisor concerning your annual filing requirements.

The U.S. federal income tax rules relating to PFICs are complex. Prospective U.S. investors are urged to consult their own tax advisers with respect to the acquisition, ownership and disposition of the ADSs, the consequences to them of an investment in a PFIC, any elections available with respect to the ADSs and the IRS information reporting obligations with respect to the acquisition, ownership and disposition of the ADSs.

U.S. Federal Income Tax Consequences If We Are Not a PFIC. The description of the U.S. federal income tax consequences of the receipt of distributions and the sale or other taxable exchange of our ADSs, described in the following two section “—Distributions” and “—Sale, Exchange or Other Taxable Disposition of the ADSs,” apply only if we are not a PFIC in the relevant year and our stock is not subject to the rules described above under “—Passive Foreign Investment Company Considerations” because we were a PFIC with respect to a U.S. holder and its ADSs in a prior year.

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Distributions. We do not expect to make any distribution in respect of our ADSs. If we are not treated as a PFIC under the rules described above under “—Passive Foreign Investment Company Considerations” and made any distribution in respect of our ADSs, the gross amount of the distribution (including any amount of foreign tax withheld in respect of such distribution) actually or constructively received by a U.S. holder with respect to ADSs will be taxable to the U.S. holder as a dividend to the extent of the U.S. holder’s pro rata share of our current and accumulated earnings and profits as determined under U.S. federal income tax principles. Distributions in excess of earnings and profits will be non-taxable to the U.S. holder to the extent of, and will be applied against and reduce, the U.S. holder’s adjusted tax basis in the ADSs. Distributions in excess of earnings and profits and such adjusted tax basis will generally be taxable to the U.S. holder as either long-term or short-term capital gain depending upon whether the U.S. holder’s holding period exceeds one year as of the time such distribution is received. However, since we do not calculate our earnings and profits under U.S. federal income tax principles, it is expected that any distribution will be reported as a dividend, even if that distribution would otherwise be treated as a non-taxable return of capital or as capital gain under the rules described above. Non-corporate U.S. holders may qualify for the preferential rates of taxation with respect to dividends on ADSs applicable to long-term capital gains (i.e., gains from the sale of capital assets held for more than one year) applicable to qualified dividend income (as discussed below) if we are a “qualified foreign corporation” and certain other requirements (discussed below) are met. A non-U.S. corporation (other than a corporation that is classified as a PFIC for the taxable year in which the dividend is paid or the preceding taxable year) generally will be considered to be a qualified foreign corporation (a) if it is eligible for the benefits of a comprehensive tax treaty with the United States which the Secretary of Treasury of the United States determines is satisfactory for purposes of this provision and which includes an exchange of information provision, or (b) with respect to any dividend it pays on ADSs which are readily tradable on an established securities market in the United States. Our ADSs are currently listed on the Nasdaq Global Select Market, which is an established securities market in the United States, and we expect the ADSs to be readily tradable on the Nasdaq Global Select Market. However, there can be no assurance that the ADSs will be considered readily tradable on an established securities market in the United States in later years. The Company, which is incorporated under the laws of France, believes that it qualifies as a resident of France for purposes of, and is eligible for the benefits of, the Convention between the Government of the United States of America and the Government of the French Republic for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income and Capital, signed on August 31, 1994, as amended and currently in force, or the U.S.-France Tax Treaty, although there can be no assurance in this regard. Further, the IRS has determined that the U.S.-France Tax Treaty is satisfactory for purposes of the qualified dividend rules and that it includes an exchange-of-information program. Therefore, subject to the discussion under “—Passive Foreign Investment Company Considerations” above, such dividends will generally be “qualified dividend income” in the hands of individual U.S. holders, provided that a holding period requirement (more than 60 days of ownership, without protection from the risk of loss, during the 121-day period beginning 60 days before the ex-dividend date) and certain other requirements are met. The dividends will not be eligible for the dividends-received deduction generally allowed to corporate U.S. holders.

A U.S. holder generally may claim the amount of any French withholding tax as either a deduction from gross income or a credit against its U.S. federal income tax liability, subject to generally applicable limitations. Generally, the credit is determined separately for different categories of income and cannot exceed the proportionate share of a U.S. holder’s U.S. federal income tax liability that such U.S. holder’s taxable income from foreign sources bears to such U.S. holder’s worldwide taxable income. For foreign tax credit limitation purposes, dividend distributions with respect to our ADSs generally will be treated as passive category income from foreign sources. The amount of a distribution with respect to the ADSs that is treated as a “dividend” may be lower for U.S. federal income tax purposes than it is for French income tax purposes, potentially resulting in a reduced foreign tax credit for the U.S. holder. Each U.S. holder should consult its own tax advisors regarding the foreign tax credit rules.

In general, the amount of a distribution paid to a U.S. holder in a foreign currency will be the dollar value of the foreign currency calculated by reference to the spot exchange rate on the day the Depositary receives the distribution, regardless of whether the foreign currency is converted into U.S. dollars at that time. Any foreign

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currency gain or loss a U.S. holder realizes on a subsequent conversion of foreign currency into U.S. dollars will be U.S. source ordinary income or loss. If dividends received in a foreign currency are converted into U.S. dollars on the day they are received, a U.S. holder should not be required to recognize foreign currency gain or loss in respect of the dividend.

Sale, Exchange or Other Taxable Disposition of the ADSs. A U.S. holder will generally recognize gain or loss for U.S. federal income tax purposes upon the sale, exchange or other taxable disposition of ADSs in an amount equal to the difference between the U.S. dollar value of the amount realized from such sale or exchange and the U.S. holder’s tax basis in those ADSs, determined in U.S. dollars. Subject to the discussion under “—Passive Foreign Investment Company Considerations” above, this gain or loss will generally be a capital gain or loss. The adjusted tax basis in the ADSs generally will be equal to the cost of such ADSs. Capital gain from the sale, exchange or other taxable disposition of ADSs of a non-corporate U.S. holder is generally eligible for a preferential rate of taxation applicable to capital gains, if the non-corporate U.S. holder’s holding period determined at the time of such sale, exchange or other taxable disposition for such ADSs exceeds one year (i.e., such gain is long-term taxable gain). The deductibility of capital losses for U.S. federal income tax purposes is subject to limitations. Any such gain or loss that a U.S. holder recognizes generally will be treated as U.S. source gain or loss for foreign tax credit limitation purposes.

For a cash basis taxpayer, units of foreign currency paid or received are translated into U.S. dollars at the spot rate on the settlement date of the purchase or sale. In that case, no foreign currency exchange gain or loss will result from currency fluctuations between the trade date and the settlement date of such a purchase or sale. An accrual basis taxpayer, however, may elect the same treatment required of cash basis taxpayers with respect to purchases and sales of the ADSs that are traded on an established securities market, provided the election is applied consistently from year to year. Such election may not be changed without the consent of the IRS. For an accrual basis taxpayer who does not make such election, units of foreign currency paid or received are translated into U.S. dollars at the spot rate on the trade date of the purchase or sale. Such an accrual basis taxpayer may recognize exchange gain or loss based on currency fluctuations between the trade date and the settlement date. Any foreign currency gain or loss a U.S. Holder realizes will be U.S. source ordinary income or loss.

Medicare Tax. Certain U.S. holders that are individuals, estates or trusts are subject to a 3.8% tax on all or a portion of their “net investment income,” which may include all or a portion of their dividend income and net gains from the disposition of ADSs. Each U.S. holder that is an individual, estate or trust is urged to consult its tax advisors regarding the applicability of the Medicare tax to its income and gains in respect of its investment in the ADSs.

Backup Withholding and Information Reporting. U.S. holders generally will be subject to information reporting requirements with respect to dividends on ADSs and on the proceeds from the sale, exchange or disposition of ADSs that are paid within the United States or through U.S.-related financial intermediaries, unless the U.S. holder is an “exempt recipient.” In addition, U.S. holders may be subject to backup withholding on such payments, unless the U.S. holder provides a taxpayer identification number and a duly executed IRS Form W-9 or otherwise establishes an exemption. Backup withholding is not an additional tax, and the amount of any backup withholding will be allowed as a credit against a U.S. holder’s U.S. federal income tax liability and may entitle such holder to a refund, provided that the required information is timely furnished to the IRS.

Foreign Asset Reporting. Certain individual U.S. holders are required to report information relating to an interest in the ADSs, subject to certain exceptions (including an exception for shares held in accounts maintained by U.S. financial institutions) by filing IRS Form 8938 (Statement of Specified Foreign Financial Assets) with their federal income tax return. U.S. holders are urged to consult their tax advisors regarding their information reporting obligations, if any, with respect to their ownership and disposition of the ADSs.

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THE DISCUSSION ABOVE IS A SUMMARY OF THE MATERIAL FRENCH AND U.S. FEDERAL INCOME TAX CONSEQUENCES OF AN INVESTMENT IN OUR ADSs OR ORDINARY SHARES AND IS BASED UPON LAWS AND RELEVANT INTERPRETATIONS THEREOF IN EFFECT AS OF THE DATE OF THIS PROSPECTUS, ALL OF WHICH ARE SUBJECT TO CHANGE, POSSIBLY WITH RETROACTIVE EFFECT. EACH PROSPECTIVE INVESTOR IS URGED TO CONSULT ITS OWN TAX ADVISOR ABOUT THE TAX CONSEQUENCES TO IT OF AN INVESTMENT IN ADSs OR ORDINARY SHARES IN LIGHT OF THE INVESTOR’S OWN CIRCUMSTANCES.

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PLAN OF DISTRIBUTION

We have entered into a sales agreement with Cowen, under which we may issue and sell from time to time up to $30,000,000 of our ADSs representing ordinary shares through Cowen as our sales agent. Sales of our ADSs, if any, will be made at market prices by any method that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) under the Securities Act, including sales made directly on the Nasdaq Global Select Market or any other trading market for our ADSs. If authorized by us in writing, Cowen may purchase our ADSs as principal.

Under the authority granted by our shareholders, the ADSs may only be purchased initially by (i) natural or legal entities, governed by French or foreign law, that invest on a regular basis in the pharmaceutical, biotechnological or medical technology sectors and (ii) companies, institutions or entities, whatever their form, governed by French or foreign law, that carry out a significant part of their activities in the pharmaceutical, cosmetic or chemical sectors or in medical devices and/or technology or in research in these sectors. In order to purchase ADSs in the offering, you will be required to execute and provide to Cowen an investor letter representing that you satisfy the foregoing investor criteria.

Cowen will offer our ADSs subject to the terms and conditions of the sales agreement on a daily basis or as otherwise agreed upon by us and Cowen. We will designate the maximum amount of securities to be sold through Cowen on a daily basis or otherwise determine such maximum amount together with Cowen. Subject to the terms and conditions of the sales agreement, Cowen will use its commercially reasonable efforts to sell on our behalf all of the ADSs requested to be sold by us. We may instruct Cowen not to sell ADSs if the sales cannot be effected at or above the price designated by us in any such instruction. Cowen or we may suspend the offering of our ADSs being made through Cowen under the sales agreement upon proper notice to the other party. Cowen and we each have the right, by giving written notice as specified in the sales agreement, to terminate the sales agreement in each party’s sole discretion at any time.

The aggregate compensation payable to Cowen as sales agent equals 3.0% of the gross sales price of the ADSs sold through it pursuant to the sales agreement. We have also agreed to reimburse Cowen for Cowen’s actual outside legal expenses incurred in connection with this offering in an amount not to exceed $100,000 without our prior written consent, and for certain other expenses, including Cowen’s FINRA counsel fees in an amount up to $20,000. In accordance with FINRA Rule 5110, these reimbursed fees and expenses are deemed sales compensation to Cowen in connection with this offering. We estimate that the total expenses of the offering payable by us, excluding commissions payable to Cowen under the sales agreement, will be approximately $500,000.

The remaining sales proceeds, after deducting any expenses payable by us and any transaction fees imposed by any governmental, regulatory, or self-regulatory organization in connection with the sales, will equal our net proceeds for the sale of such ADSs.

Cowen will provide written confirmation to us following the close of trading on the Nasdaq Global Select Market on each day in which ADSs are sold through it as sales agent under the sales agreement. Each confirmation will include the number of ADSs sold through it as sales agent on that day, the price of the ADSs sold, the net proceeds to us and copies of such documents as required by French law and the limits and other conditions set forth in our corporate authorizations.

We will report at least quarterly the number of ADSs sold through Cowen under the sales agreement, the net proceeds to us and the compensation paid by us to Cowen in connection with the sales of ADSs.

Settlement for sales of ADSs will occur, unless the parties agree otherwise or otherwise required by law, on the second business day that is also a trading day following the date on which any sales were made in return for payment of the net proceeds to us. There is no arrangement for funds to be received in an escrow, trust or similar arrangement.

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In connection with the sales of our ADSs on our behalf, Cowen will be deemed to be an “underwriter” within the meaning of the Securities Act, and the compensation paid to Cowen will be deemed to be underwriting commissions or discounts. We have agreed in the sales agreement to provide indemnification and contribution to Cowen against certain liabilities, including liabilities under the Securities Act. As sales agent, Cowen will not engage in any transactions that stabilize our securities.

Our ADSs are listed on the Nasdaq Global Select Market under the symbol “ERYP.” The transfer agent and registrar for our ADSs is The Bank of New York Mellon.

Cowen and/or its affiliates have provided, and may in the future provide, various investment banking and other financial services for us for which services they have received and, may in the future receive, customary fees.

The address of Cowen is 599 Lexington Avenue, New York, New York 10022.

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MATERIAL CHANGES

Except as described above or otherwise described in our Annual Report on Form 20-F for the fiscal year ended December 31, 2019 and in our Reports on Form 6-K incorporated by reference into this prospectus, no reportable material changes have occurred since December 31, 2019.

ENFORCEMENT OF JUDGMENTS

We are a corporation organized under the laws of France. Half of our directors are citizens and residents of countries other than the United States, and the majority of our assets are located outside of the United States. We have appointed an agent for service of process in the United States; however, it may be difficult for investors:

Nevertheless, a final judgment for the payment of money rendered by any federal or state court in the United States based on civil liability, whether or not predicated solely upon the U.S. federal securities laws, would be recognized and enforced in France provided that a French judge considers that this judgment meets the French legal requirements concerning the recognition and the enforcement of foreign judgments and is capable of being immediately enforced in the United States. A French court is therefore likely to grant the enforcement of a foreign judgment without a review of the merits of the underlying claim, only if (1) that judgment is enforceable in the jurisdiction of the U.S. court which rendered it, (2) that judgement was rendered by a court having jurisdiction over the dispute (the condition will be met if the dispute is clearly connected to the jurisdiction of the U.S. court and French courts did not have exclusive jurisdiction over the matter), (3) that judgment does not contravene French international public order and public policy, including the right to due process and (4) the U.S. judgment is not tainted with fraud and is not incompatible with a judgment rendered by a French court in the same matter, or with an earlier judgment rendered by a foreign court in the same matter.

In addition, French law guarantees full compensation for the harm suffered but is limited to the actual damages, so that the victim does not suffer or benefit from the situation. Such system excludes damages such as, but not limited to, punitive and exemplary damages.

As a result, the enforcement, by U.S. investors, of any judgments obtained in U.S. courts in civil and commercial matters, including judgments under the U.S. federal securities law against us or members of our board of directors, officers or certain experts named herein who are residents of France or countries other than the United States would be subject to the above conditions.

Finally, there may be doubt as to whether a French court would impose civil liability on us, the members of our board of directors, our officers or certain experts named herein in an original action predicated solely upon the U.S. federal securities laws brought in a court of competent jurisdiction in France against us or such members, officers or experts, respectively.

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LEGAL MATTERS

The validity of our ordinary shares, including ordinary shares represented by ADSs offered by this prospectus and certain other matters governed by French law will be passed on for us by Gide Loyrette Nouel A.A.R.P.I. Cooley LLP, Boston, Massachusetts, will be representing us in regards to certain matters governed by U.S. law in connection with this offering. Covington & Burling LLP, New York, New York, is acting as counsel for Cowen in connection with this offering with respect to U.S. law and Linklaters LLP is acting as counsel for Cowen in connection with this offering with respect to French law.

EXPERTS

The consolidated financial statements of the Company as of December 31, 2019, 2018 and 2017 and for each of the years in the three year period ended December 31, 2019, incorporated in this prospectus by reference from the Company’s Annual Report on Form 20-F, have been audited by KPMG S.A., independent registered public accounting firm, as stated in their report, which is also incorporated herein by reference from the Company’s Annual Report on Form 20-F. Such consolidated financial statements have been so incorporated in reliance upon the report of such firm given upon their authority as experts in accounting and auditing. KPMG S.A.’s report dated March 17, 2020 refers to the change in Erytech Pharma S.A.’s method of accounting for leases on January 1, 2019, due to the adoption of IFRS 16 “Leases.”

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WHERE YOU CAN FIND MORE INFORMATION

This prospectus is part of a registration statement we filed with the SEC. This prospectus does not contain all of the information set forth in the registration statement and the exhibits to the registration statement. For further information with respect to us and the securities we are offering under this prospectus, we refer you to the registration statement and the exhibits and schedules filed as a part of the registration statement. You should rely only on the information contained in this prospectus or incorporated by reference herein. We have not authorized anyone else to provide you with different information. We are not making an offer of these securities in any state where the offer is not permitted. You should not assume that the information in this prospectus is accurate as of any date other than the date on the front page of this prospectus, regardless of the time of delivery of this prospectus or any sale of the securities offered by this prospectus.

We are subject to the reporting requirements of the Exchange Act that are applicable to a foreign private issuer. Under the Exchange Act, we file annual reports on Form 20-F and other information with the SEC. We also furnish to the SEC under cover of Form 6-K material information required to be made public in France, filed with and made public by any stock exchange on which we are listed or distributed by us to our shareholders. As a foreign private issuer, we are exempt from, among other things, the rules under the Exchange Act prescribing the furnishing and content of proxy statements and our officers, directors and principal shareholders are exempt from the reporting and short-swing profit recovery provisions contained in Section 16 of the Exchange Act. The SEC maintains a website that contains reports, proxy and information statements and other information regarding issuers, such as us, that file electronically with the SEC. The address of the SEC website is www.sec.gov.

We maintain a website at www.erytech.com. Information contained in or accessible through our website does not constitute a part of this prospectus.

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INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

The SEC allows us to incorporate by reference much of the information we file with the SEC, which means that we can disclose important information to you by referring you to those publicly available documents. The information that we incorporate by reference in this prospectus is considered to be part of this prospectus. Any statement contained in this prospectus or a previously filed document incorporated by reference will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained in this prospectus or a subsequently filed document incorporated by reference modifies or replaces that statement. The SEC file number for the documents incorporated by reference in this prospectus is 001-38281.

The following documents are incorporated by reference into this document:

We are also incorporating by reference all subsequent Annual Reports on Form 20-F that we file with the SEC and certain reports on Form 6-K that we furnish to the SEC after the date of this prospectus (if they state that they are incorporated by reference into this prospectus) prior to the termination of this offering. In all cases, you should rely on the later information over different information included in this prospectus.

Notwithstanding the statements in the preceding paragraphs, no document, report or exhibit (or portion of any of the foregoing) or any other information that we have “furnished” to the SEC pursuant to the Exchange Act shall be incorporated by reference into this prospectus.

We will provide to each person, including any beneficial owner, to whom a prospectus is delivered, without charge upon written or oral request, a copy of any or all of the documents that are incorporated by reference into this prospectus but not delivered with the prospectus, including exhibits that are specifically incorporated by reference into such documents. You should direct any requests for documents to ERYTECH Pharma S.A., 60 Avenue Rockefeller, 69008 Lyon France; telephone: +33 4 78 74 4438.

S-32

Up to $30,000,000

American Depositary Shares representing Ordinary Shares

PROSPECTUS

Cowen

                    , 2020

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 8. Indemnification of Directors and Officers.

Under French law, provisions of bylaws that limit the liability of directors are prohibited. However, French law allows sociétés anonymes to contract for and maintain liability insurance against civil liabilities incurred by any of their directors and officers involved in a third-party action, provided that they acted in good faith and within their capacities as directors or officers of the company. Criminal liability cannot be indemnified under French law, whether directly by the company or through liability insurance.

We have liability insurance for our directors and officers, and we also have coverage for insurance against liability under the Securities Act. We have entered into agreements with our directors and executive officers to provide contractual indemnification. With certain exceptions and subject to limitations on indemnification under French law, these agreements provide for indemnification for damages and expenses including, among other things, attorneys’ fees, judgments and settlement amounts incurred by any of these individuals in any action or proceeding arising out of his or her actions in that capacity.

These agreements may discourage shareholders from bringing a lawsuit against our directors and executive officers for breach of their fiduciary duty. These provisions also may have the effect of reducing the likelihood of derivative litigation against directors and executive officers, even though such an action, if successful, might otherwise benefit us and our shareholders. Furthermore, a shareholder’s investment may be adversely affected to the extent we pay the costs of settlement and damage awards against directors and officers pursuant to these insurance agreements.

Item 9. Exhibits.

The following exhibits are filed with this registration statement or are incorporated herein by reference.

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Item 10. Undertakings.

(a) The undersigned registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement; and

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

provided, however, that paragraphs (a)(1)(i), (a)(1)(ii), and (a)(1)(iii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is a part of the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(4) To file a post-effective amendment to the registration statement to include any financial statements required by Item 8.A of Form 20-F at the start of any delayed offering or throughout a continuous offering. Financial statements and information otherwise required by Section 10(a)(3) of the Securities Act of 1933 need not be furnished, provided, that the registrant includes in the prospectus, by means of a post-effective amendment, financial statements required pursuant to this paragraph (a)(4) and other information necessary to ensure that all other information in the prospectus is at least as current as the date of those financial statements. Notwithstanding the foregoing, with respect to registration statements on Form F-3, a post-effective amendment need not be filed to include financial statements and information required by Section 10(a)(3) of the Securities Act of 1933, or Item 8.A of Form 20-F if such financial statements and information are contained in periodic reports filed with or furnished to the Commission by the registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the Form F-3.

(5) That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(i) Each prospectus filed by the registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(ii) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii), or (x) for the

II-2

purpose of providing the information required by section 10(a) of the Securities Act of 1933 shall be deemed to be part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date.

(6) That, for the purpose of determining liability of the registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities:

The undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

(iv) Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

(7) That, for purposes of determining any liability under the Securities Act of 1933, each filing of the Registrant’s Annual Report pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s Annual Report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(9) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form F-3 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in Lyon, France on September 21, 2020.

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POWER OF ATTORNEY AND SIGNATURES

We, the undersigned officers and directors of ERYTECH Pharma S.A. hereby severally constitute and appoint Gil Beyen and Eric Soyer, and each of them singly, our true and lawful attorneys with full power to any of them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form F-3 filed herewith and any and all amendments (including post-effective amendments) to said Registration Statement, and any registration statement filed pursuant to Rule 462 under the Securities Act of 1933, as amended, in connection with said Registration Statement, and to file or cause to be filed the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, and generally to do all such things in our name and on our behalf in our capacities as officers and directors to enable ERYTECH Pharma S.A. to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming all that said attorneys, and each of them, or their substitute or substitutes, shall do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

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SIGNATURE OF AUTHORIZED U.S. REPRESENTATIVE

Pursuant to the Securities Act of 1933, as amended, the undersigned, the duly authorized representative in the United States of ERYTECH Pharma S.A., has signed this registration statement on September 21, 2020.

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Exhibit 1.2

ERYTECH PHARMA S.A.

$30,000,000

AMERICAN DEPOSITARY SHARES

each representing one (1) Ordinary Share

SALES AGREEMENT

September 21, 2020

Cowen and Company, LLC

599 Lexington Avenue

New York, NY 10022

Ladies and Gentlemen:

ERYTECH Pharma S.A., a société anonyme organized under the laws of France and registered with the Register of Commerce and Companies (Registre du Commerce et des Sociétés) of Lyon under number 479 560 013 (the “Company”), confirms its agreement (this “Agreement”) with Cowen and Company, LLC (“Cowen”), as follows:

1. Issuance and Sale of Shares. The Company agrees that, from time to time during the term of this Agreement, on the terms and subject to the conditions set forth herein, it may issue and sell through Cowen, acting as agent and/or principal, American Depositary Shares of the Company (“ADSs”) each representing one (1) fully paid ordinary share, €0.10 nominal value per share (the “Ordinary Shares”) to be issued by the Company, (i) with such ADSs having an aggregate offering price of up to $30,000,000, and (ii) with the number of Ordinary Shares underlying such ADSs (the “Underlying Ordinary Shares”) issued over a 12-month rolling period representing, once issued together with all the other Ordinary Shares which have been admitted to trading on the regulated market of Euronext in Paris (“Euronext”) over the same 12-month period, being less than 20% of the total number of the Company’s securities already admitted to trading on Euronext on the date the admission to trading of the Underlying Ordinary Shares is requested. Notwithstanding anything to the contrary contained herein, the parties hereto agree that compliance with the limitation set forth in this Section 1 on the number or dollar amount of ADSs issued and sold under this Agreement shall be the sole responsibility of the Company, and Cowen shall have no obligation in connection with such compliance. The issuance and sale of ADSs through Cowen will be effected pursuant to the Registration Statement (as defined below) filed by the Company and declared effective by the Securities and Exchange Commission (the “Commission”), although nothing in this Agreement shall be construed as requiring the Company to use the Registration Statement (as defined below) to issue the ADSs. The ADSs may be evidenced by American depositary receipts (the “ADRs”) to be issued pursuant to the Amended and Restated Deposit Agreement, dated May 14, 2018 among the Company, The Bank of New York Mellon, as depositary (the “Depositary”) and all owners and holders of the ADRs evidencing ADSs issued thereunder (as the same may be amended, the “Deposit Agreement”).

Each of the Company and Cowen acknowledges that the Placement Shares (as defined in Section 2. below) may only be sold in compliance with applicable French or foreign law and the limits and other conditions set forth in the corporate authorizations of the Company applicable at the time of issuance of the Placement Shares.

The Company has prepared and will file, in accordance with the provisions of the Securities Act of 1933, as amended, and the rules and regulations thereunder (collectively, the “Securities Act”), with the Commission a shelf registration statement on Form F-3, including a base prospectus, relating to certain securities, including the ADSs, to be issued from time to time by the Company, and which incorporates by reference documents that the Company has filed or will file in accordance with the provisions of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (collectively, the “Exchange Act”). The Company has prepared a prospectus or prospectus supplement specifically relating to the ADSs (the “Prospectus Supplement”) to the base prospectus included as part of such registration statement. The Company has furnished to Cowen, for use by Cowen, copies of the prospectus included as part of such registration statement, as supplemented by the Prospectus Supplement, relating to the ADSs. Except where the context otherwise requires, such registration statement, as amended when it becomes or became effective, including all documents filed as part thereof or incorporated by reference therein, and including any information contained in a Prospectus (as defined below) subsequently filed with the Commission pursuant to Rule 424(b) under the Securities Act or deemed to be a part of such registration statement pursuant to Rule 430B or 462(b) of the Securities Act, is herein called the “Registration Statement.” The Company has prepared and filed with the Commission post-effective amendments to its registration statement on Form F-6 (File No. 333-201279) filed with the Commission on December 29, 2014, relating to the ADSs. Such registration statement, as amended, including the exhibits thereto, in the form in which it became effective under the Securities Act is called the “F-6 Registration Statement.” The base prospectus, including all documents incorporated therein by reference, included in the Registration Statement, as it may be supplemented by the Prospectus Supplement, in the form in which such prospectus and/or Prospectus Supplement have most recently been filed by the Company with the Commission pursuant to Rule 424(b) under the Securities Act, together with any “issuer free writing prospectus,” as defined in Rule 433 of the Securities Act regulations (“Rule 433”), relating to the ADSs and Ordinary Shares that (i) is required to be filed with the Commission by the Company or (ii) is exempt from filing pursuant to Rule 433(d)(5)(i), in each case in the form filed or required to be filed with the Commission or, if not required to be filed, in the form retained in the Company’s records pursuant to Rule 433(g), is herein called the “Prospectus.” Any reference herein to the Registration Statement, the Prospectus or any amendment or supplement thereto shall be deemed to refer to and include the documents incorporated by reference therein, and any reference herein to the terms “amend,” “amendment” or “supplement” with respect to the Registration Statement or the Prospectus shall be deemed to refer to and include the filing after the execution hereof of any document with the Commission deemed to be incorporated by reference therein. For the purposes of this Agreement, all references to the Registration Statement, the Prospectus or to any amendment or supplement thereto shall be deemed to include any copy filed with the Commission pursuant to the Electronic Data Gathering Analysis and Retrieval system (“EDGAR”).

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To the extent, as provided above, that the total number of Underlying Ordinary Shares issued pursuant to this Agreement over a 12-month rolling period represents, once issued and together with all the other Ordinary Shares which have been admitted to trading on Euronext over the same 12 month period, less than 20% of the total number of Ordinary Shares admitted to trading on Euronext on the date the admission to trading of the Underlying Ordinary Shares is requested, no prospectus is required for such admission to trading pursuant to Regulation (EU) 2017/1129 of the European Parliament and of the Council dated June 14, 2017.

2. Placements. Each time that the Company wishes to issue and sell the ADSs hereunder (each, a “Placement”), it will notify Cowen by email notice (or other method mutually agreed to in writing by the parties) (a “Placement Notice”) containing the parameters in accordance with which it desires the ADSs to be sold, which shall at a minimum include the number or dollar amount of ADSs to be sold (the “Placement Shares”), the time period during which sales are requested to be made, any minimum price below which sales may not be made, and any limitations or conditions required by French law and/or set forth in the corporate authorization of the Company, a form of which containing such minimum sales parameters necessary is attached hereto as Schedule 1. Each investor in a Placement will have provided to the Company, no later than the Settlement Date (as defined in Section 5(b) below), such documents as required by French law and the limits and other conditions set forth in the corporate authorizations of the Company in a form acceptable by the Company (including the executed investor letter), which form will be sent to Cowen with each Placement Notice. The Placement Notice shall originate from any of the individuals from the Company set forth on Schedule 2 (with a copy to each of the other individuals from the Company listed on such schedule), and shall be addressed to each of the individuals from Cowen set forth on Schedule 2, as such Schedule 2 may be amended from time to time. The Placement Notice shall be effective upon receipt by Cowen unless and until (i) in accordance with the notice requirements set forth in Section 4, Cowen declines to accept the terms contained therein for any reason, in its sole discretion, which declination must occur within two (2) Business Days of the receipt of the Placement Notice, (ii) the entire amount of the ADSs that may be issued and sold through Cowen under the Placement Notice have been sold or the maximum amount of Underlying Ordinary Shares that can be issued over a given rolling 12-month period, as set out in Section 1(i) above, would be exceeded, (iii) in accordance with the notice requirements set forth in Section 4, the Company suspends or terminates the Placement Notice, (iv) the Company issues a subsequent Placement Notice with parameters superseding or amending those on the earlier dated Placement Notice, or (v) this Agreement has been terminated under the provisions of Section 11. The amount of any commission or other compensation to be paid by the Company to Cowen in connection with the sale of the Placement Shares shall be calculated in accordance with the terms set forth in Schedule 3. It is expressly acknowledged and agreed that neither the Company nor Cowen will have any obligation whatsoever with respect to a Placement or any Placement Shares unless and until the Company delivers a Placement Notice to Cowen and Cowen does not decline such Placement Notice pursuant to the terms set forth above, and then only upon the terms specified therein and herein. In the event of a conflict between the terms of this Agreement and the terms of a Placement Notice, the terms of the Placement Notice will control.

3. Sale of Placement Shares by Cowen. Subject to the terms and conditions herein set forth, upon the Company’s delivery of a Placement Notice, and unless the sale of the Placement Shares described therein has been declined, suspended, or otherwise terminated in accordance with the terms of this Agreement, Cowen, for the period specified in the Placement Notice, will use its commercially reasonable efforts consistent with its normal trading and sales

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practices and applicable state and federal laws, rules and regulations and the rules of the Nasdaq Stock Market, Inc. to sell such Placement Shares up to the amount specified, and otherwise in accordance with the terms of such Placement Notice. Cowen will provide (i) written confirmation to the Company (including by email correspondence to each of the individuals of the Company set forth on Schedule 2, if receipt of such correspondence is actually acknowledged by any of the individuals to whom the notice is sent, other than via auto-reply) no later than the opening of the Trading Day (as defined below) immediately following the Trading Day on which it has made sales of the Placement Shares hereunder setting forth the number of Placement Shares to be sold on such day, the price of the Placement Shares sold, and the Net Proceeds (as defined below) payable to the Company and (ii) copies of such documents as required by French law and the limits and other conditions set forth in the corporate authorizations of the Company in a form acceptable by the Company, including the relevant investors letters of each prospective investor, a form of which is attached hereto in Exhibit A of Schedule 1. Cowen may sell on behalf of the Company the Placement Shares by any method permitted by law deemed to be an “at the market offering” as defined in Rule 415(a)(4) of the Securities Act, including without limitation sales made on or through The Nasdaq Global Select Market (“Nasdaq”), on any other existing trading market for the ADSs; provided, that, such sales are made in compliance with French law and within the limits and conditions set forth by the corporate authorizations of the Company, which shall be specified in the Placement Notice. If expressly authorized by the Company in a Placement Notice, Cowen may sell Placement Shares in negotiated transactions. Notwithstanding the provisions of Section 6(aaa), Cowen shall not purchase Placement Shares for its own account as principal unless expressly authorized to do so by the Company in a Placement Notice. The Company acknowledges and agrees that (i) there can be no assurance that Cowen will be successful in selling Placement Shares, and (ii) Cowen will incur no liability or obligation to the Company or any other person or entity if it does not sell Placement Shares for any reason other than a failure by Cowen to use its commercially reasonable efforts consistent with its normal trading and sales practices to sell such Placement Shares as required under this Section 3. For the purposes hereof, “Trading Day” means any day on which the Company’s ADSs are purchased and sold on Nasdaq.

4. Suspension of Sales.

(a) The Company or Cowen may, upon notice to the other party in writing (including by email correspondence to each of the individuals of the other party set forth on Schedule 2, if receipt of such correspondence is actually acknowledged by any of the individuals to whom the notice is sent, other than via auto-reply) or by telephone (confirmed immediately by verifiable facsimile transmission or email correspondence to each of the individuals of the other party set forth on Schedule 2), suspend any proposed sale of Placement Shares; provided, however, that such suspension shall not affect or impair either party’s obligations with respect to any Placement Shares sold hereunder prior to the receipt of such notice. While a suspension is in effect any obligation under section 7(m), 7(n) and 7(o) with respect to delivery of certificates, opinion, or comfort letters to Cowen, shall be waived. Each of the parties agrees that no such notice under this Section 4 shall be effective against the other unless it is made to one of the individuals named on Schedule 2 hereto, as such schedule may be amended from time to time.

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(b) Notwithstanding any other provision of this Agreement, during any period in which the Company is in possession of material non-public information, the Company and Cowen agree that (i) no sale of Placement Shares will take place, (ii) the Company shall not request the sale of any Placement Shares, and (iii) Cowen shall not be obligated to sell or offer to sell any Placement Shares.

(c) If either Cowen or the Company has reason to believe that the exemptive provisions set forth in Rule 101(c)(1) of Regulation M under the Exchange Act are not satisfied with respect to the ADSs, it shall promptly notify the other party, and Cowen may, at its sole discretion, suspend proposed sales of the Placement Shares under this Agreement; provided that, it is acknowledged and agreed by the parties hereto that the exemptive provisions set forth in Rule 101(c)(1) of Regulation M under the Exchange Act are not satisfied with respect to the ADSs as of the date of this Agreement.

(d) Notwithstanding any other provision of this Agreement, during any period in which the Registration Statement is no longer effective under the Securities Act, the Company shall promptly notify Cowen, the Company shall not request the sale of any Placement Shares, and Cowen shall not be obligated to offer to sell any Placement Shares.

5. Settlement.

(a) Purchase Price: For each Placement, the Placement Shares (and the Underlying Ordinary Shares) to be sold will be issued as part of a single capital increase at an identical price in USD (and its equivalent in EUR), as decided by the Chief Executive Officer (the “Purchase Price”). The USD - EUR parity will be decided by the Chief Executive Officer based upon the exchange rate as in effect on the date of the Placement, exclusive of the commissions set forth in paragraph (d) below and section 7(g).

(b) Payment and Settlement of Placement Shares. For each Placement, unless otherwise specified in the applicable Placement Notice, settlement for sales of Placement Shares will occur on the second (2^nd) Trading Day (or such earlier day as is industry practice for regular-way trading) following the date on which such sales are made (each, a “Settlement Date” and the first such settlement date, the “First Delivery Date”). Payment of the Purchase Price of the Placement Shares (and the Underlying Ordinary Shares) shall be made in USD on or prior to 04:00 p.m. C.E.T. on the date prior to the Settlement Date or at such other time on the same or such other date, not later than the fifth business day thereafter, as may be agreed upon between the Company and Cowen, to the account or accounts designated by the Company in the Placement Notice, which account shall be held at Société Générale Securities Services, as transfer agent and registrar of the Company, or such other transfer agent and registrar as the Company may specify in a Placement Notice (the “Registrar”). No later than 11:00 am C.E.T. on a Settlement Date, the Registrar shall then issue the depositary certificate (certificat du dépositaire) in accordance with Article L. 225-146 of the French Commercial Code, relating to the capital increase of the Company resulting from the issuance of the Underlying Ordinary Shares, and shall deliver two originals of such certificate to the Company. At least one full business day prior to a Settlement Date, the Company shall have taken all actions and provided the Registrar with all notices, documents, corporate authorizations or other instruments necessary or required to effectuate the issuance of the certificat du dépositaire referred herein.

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(c) Delivery of Placement Shares. On each Settlement Date, immediately after issuing the certificat du dépositaire, (i) the Registrar shall (x) send to Euroclear France, in the name and on behalf of the Company, a lettre comptable for the creation of the Underlying Ordinary Shares and for credit thereof no later than on the Settlement Date in a securities account opened in the name and on behalf of the Company in the books of the Registrar; and (y) deliver the Underlying Ordinary Shares to the custodian for the Depositary, and (ii) the Company will, or will cause the Depositary or its transfer agent (if applicable) to, electronically transfer the Placement Shares being sold by crediting the purchaser’s account at The Depository Trust Company (“DTC”) through its Deposit and Withdrawal at Custodian System or by such other means of delivery as may be mutually agreed upon by the parties hereto which in all cases shall be freely tradeable, transferable, registered shares in good deliverable form.

(d) Commissions. As compensation for Cowen’s commitments, the Company shall pay on each Settlement Date, or cause the Registrar to pay, to Cowen for purposes of settlement and delivery of the Placement Shares, (i) a commission or other compensation for such sales payable by the Company pursuant to Section 2 hereof, (ii) any other amounts due and payable by the Company to Cowen hereunder pursuant to Section 7(g) (Expenses) hereof, and (iii) any transaction fees imposed by any governmental or self-regulatory organization in respect of such sales. The aforementioned amounts shall be deducted from the gross proceeds payable to the Company on a Settlement Date and shall be paid on such date by the Registrar to Cowen as soon as possible after issuance of the certificat du dépositaire (the “Net Proceeds”).

6. Representations and Warranties of the Company. The Company represents and warrants to, and agrees with, Cowen that as of the date of this Agreement, each Representation Date (as defined in Section 7(m)), each date on which a Placement Notice is given, and any date on which Placement Shares are sold hereunder:

(a) Compliance with Registration Requirements. The Registration Statement and the F-6 Registration Statement have each become, or will be, effective under the Securities Act prior to the issuance of any Placement Notices by the Company. The Company has complied, or will comply, to the Commission’s satisfaction, with all requests of the Commission for additional or supplemental information, if any. No stop order suspending the effectiveness of the Registration Statement or the F-6 Registration Statement is in effect and no proceedings for such purpose have been instituted or are pending or, to the knowledge of the Company, are contemplated or threatened by the Commission. The Company is a “foreign private issuer” within the meaning of Rule 405 under the Securities Act. The Company meets the requirements for use of Form F-3 under the Securities Act. The sale of the Placement Shares hereunder meets the requirements or General Instruction I.B.1. of Form F-3.

Each of the Registration Statement and any post-effective amendment thereto, at the time of its effectiveness and at each deemed effective date with respect to Cowen pursuant to Rule 430B(f)(2) under the rules and regulations of the Commission under the Securities Act, complied or will comply in all material respects with the requirements of the Securities Act and the Securities Act regulations. The Prospectus and any amendment or supplement thereto, at the time each is filed with the Commission, complied or will comply in all material respects with the requirements of the Securities Act and the Securities Act regulations. The Prospectus was or will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

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The documents incorporated or deemed to be incorporated by reference in the Registration Statement and the Prospectus, when they became effective or at the time they were or hereafter are filed with the Commission, complied or will comply in all material respects with the requirements of the Exchange Act and the rules and regulations of the Commission under the Exchange Act.

(b) Disclosure. The Prospectus when filed complied or will comply and, as amended and supplemented, if applicable, will comply in all material respects with the Securities Act. Each of the Registration Statement and any post-effective amendment thereto and the F-6 Registration Statement and any post-effective amendment thereto, at the time it became or becomes effective, complied and as of each of the Settlement Dates, if any, complied or will comply in all material respects with the Securities Act and did not and, as of each Settlement Date, if any, did not and will not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. Neither the Prospectus nor any amendment or supplement thereto (including any prospectus wrapper), as of its date, at the time of any filing with the Commission pursuant to Rule 424(b), or at any Settlement Date, included, includes or will include an untrue statement of a material fact or omitted, omits or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The documents incorporated or deemed to be incorporated by reference in the Registration Statement and the Prospectus, at the time the Registration Statement became effective or when such documents incorporated by reference were filed with the Commission, as the case may be, when read together with the other information in the Registration Statement or the Prospectus, as the case may be, did not and will not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. The representations and warranties set forth in the four immediately preceding sentences do not apply to statements in or omissions from the Registration Statement or any post-effective amendment thereto, the F-6 Registration Statement or any post-effective amendment thereto, or the Prospectus, or any amendments or supplements thereto, made in reliance upon and in conformity with written information relating to Cowen furnished to the Company in writing by Cowen expressly for use therein, it being understood and agreed that the only such information consists of the Agent’s Information (as defined below). There are no contracts or other documents required to be described in the Prospectus or to be filed as an exhibit to the Registration Statement or the F-6 Registration Statement which have not been described or filed as required.

(c) Free Writing Prospectuses; Not an Ineligible Issuer. The Company currently is not an “ineligible issuer,” as defined in Rule 405 of the rules and regulation of the Commission. The Company agrees to notify Cowen promptly upon the Company becoming an “ineligible issuer.” Each free writing prospectus that the Company is required to file pursuant to Rule 433(d) under the Securities Act has been, or will be, filed with the Commission in accordance with the requirements of the Securities Act. Each free writing prospectus that the Company has filed, or is required to file, pursuant to Rule 433(d) under the Securities Act or that was prepared by or on behalf of or used or referred to by the Company complies or will comply in all material respects with the requirements of Rule 433 under the Securities Act, including timely filing with the Commission or retention where required and legending, each such free writing prospectus, as of its issue date and at all subsequent times through the completion of the public offer and sale of

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the Placement Shares did not, does not and will not include any information that conflicted, conflicts or will conflict with the information contained in the Registration Statement, the Prospectus or any preliminary prospectus and not superseded or modified, and each such free writing prospectus, when considered together with the Prospectus, did not, as of the date of its first use, contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading. The Company has not prepared, used or referred to, and will not prepare, use or refer to, any free writing prospectus, without your prior written consent, which consent shall not be unreasonably withheld, conditioned or delayed.

(d) Distribution of Offering Material by the Company. The Company has not distributed and will not distribute, prior to the completion of Cowen’s distribution of the Placement Shares, any offering material in connection with the offering and sale of the Placement Shares other than the Prospectus, the Registration Statement, and the F-6 Registration Statement.

(e) The Sales Agreement. This Agreement has been duly authorized, executed and delivered by the Company.

(f) Authorization of the Placement Shares. On each Settlement Date, the Company will have the power and authority to allot and issue the Underlying Ordinary Shares on such Settlement Date pursuant to this Agreement without further sanction or consent by any securityholder of the Company. The Underlying Ordinary Shares and the Placement Shares have been duly authorized for issuance and sale pursuant to this Agreement and, when issued and delivered against payment therefor pursuant to this Agreement, and upon delivery of the depositary certificate (certificat du dépositaire) in accordance with Article L. 225-146 of the French Commercial Code, will be validly issued, fully paid and non-assessable and, on each Settlement Date, the issuance and sale of the Underlying Ordinary Shares and the Placement Shares will not be subject to any preemptive rights, rights of first refusal or other similar rights to subscribe for or purchase the Underlying Ordinary Shares and the Placement Shares which have not been duly excluded, waived or satisfied. The Underlying Ordinary Shares and the Ordinary Shares may be freely deposited by the Company with the Depositary or its nominee against issuance of ADRs evidencing the ADSs, as contemplated by the Deposit Agreement. Upon the sale and delivery of the Placement Shares, and payment therefor, Cowen or the purchasers thereof, as the case may be, will acquire good, marketable and valid title to such Placement Shares, free and clear of all pledges, liens, security interests, charges, claims or encumbrances.

(g) No Applicable Registration or Other Similar Rights. Except as described in the Registration Statement and the Prospectus, there are no persons with registration or other similar rights to have any equity or debt securities registered for sale under the Registration Statement or the F-6 Registration Statement or included in the offering contemplated by this Agreement, except for such rights as have been duly excluded, waived or satisfied.

(h) No Material Adverse Change. Except as otherwise disclosed in the Registration Statement and the Prospectus, subsequent to the respective dates as of which information is given in the Registration Statement and the Prospectus: (i) there has been no material adverse change or any development that would reasonably be expected to result in a material adverse change, in the condition, financial or otherwise, or in the earnings, shareholders’ equity, business, properties, operations, assets, liabilities or prospects,

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whether or not arising from transactions in the ordinary course of business, of the Company and its subsidiaries, considered as one entity (any such change being referred to herein as a “Material Adverse Change”); (ii) the Company and its subsidiaries, considered as one entity, have not incurred any material liability or obligation, indirect, direct or contingent, including without limitation any losses or interference with its business from fire, explosion, flood, earthquakes, accident or other calamity, whether or not covered by insurance, or from any strike, labor dispute or court or governmental action, order or decree, that are material, individually or in the aggregate, to the Company and its subsidiaries, considered as one entity, or has entered into any material transactions not in the ordinary course of business; and (iii) there has not been any material decrease in the share capital or any material increase in any short-term or long-term indebtedness of the Company or its subsidiaries and there has been no dividend or distribution of any kind declared, paid or made by the Company or, except for dividends paid to the Company or other subsidiaries, by any of the Company’s subsidiaries on any class of share capital, or any repurchase or redemption by the Company or any of its subsidiaries of any class of share capital.

(i) The Deposit Agreement; ADRs; Ordinary Shares. The Deposit Agreement has been duly authorized, executed and delivered by the Company and, assuming due authorization, execution and delivery by the Depositary, constitutes a valid and legally binding obligation of the Company, enforceable in accordance with its terms, except as the enforceability thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or similar laws relating to or affecting creditors’ rights generally or by general equitable principles. Upon due issuance by the Depositary of the ADRs evidencing the ADSs against the deposit of the Underlying Ordinary Shares in respect thereof in accordance with the provisions of the Deposit Agreement and upon payment by Cowen for the Placement Shares evidenced thereby in accordance with the provisions of this Agreement, such ADRs will be duly and validly issued and the persons in whose names the ADRs are registered will be entitled to the respective rights specified therein and in the Deposit Agreement. On each Settlement Date, the issuance and sale of the ADSs respectively by the Depositary and by the Company and the deposit of the Underlying Ordinary Shares with the Depositary and the issuance of the ADRs evidencing the ADSs as contemplated by this Agreement and the Deposit Agreement will neither (i) cause any holder of any Ordinary Shares or ADSs, securities convertible into or exchangeable or exercisable for Ordinary Shares or ADSs or options, warrants or other rights to purchase any Ordinary Shares or ADSs or any other securities of the Company to have any right to acquire any shares of preferred stock of the Company nor (ii) trigger any anti-dilution rights of any such holder with respect to such Underlying Ordinary Shares, ADRs, securities, options, warrants or rights. The Deposit Agreement and the ADRs conform in all material respects to each description thereof in the Prospectus. Each holder of ADRs issued pursuant to the Deposit Agreement shall be entitled, subject to the Deposit Agreement, to seek enforcement of its rights through the Depositary or its nominee registered as a representative of the holders of the ADRs in a direct suit, action or proceeding against the Company.

(j) Independent Accountants. KPMG S.A., which has expressed its opinion with respect to the consolidated financial statements (which term as used in this Agreement includes the related notes thereto) filed with the Commission and incorporated by reference in the Registration Statement and the Prospectus, is (i) an independent registered public accounting firm as required by the Securities Act, the Exchange Act and the rules of the Public Company Accounting Oversight Board (“PCAOB”) whose registration has not been suspended or revoked and who has not requested such registration to be withdrawn and (ii) in compliance with the applicable requirements relating to the qualification of accountants under Rule 2-01 of Regulation S-X under the Securities Act.

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(k) Financial Statements. The financial statements filed with the Commission as a part of, or incorporated by reference in, the Registration Statement and the Prospectus present fairly, in all material respects, the consolidated financial position of the Company and its subsidiaries as of the dates indicated and the results of their operations, changes in shareholders’ equity and cash flows for the periods specified. Such financial statements have been prepared in conformity with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) applied on a consistent basis throughout the periods involved, except as may be expressly stated in the related notes thereto or as otherwise disclosed therein. The unaudited interim condensed consolidated financial statements incorporated by reference in the Registration Statement and the Prospectus have been prepared in accordance with IAS 34, the standard of IFRS applicable to interim financial statements. No other financial statements or supporting schedules are required under applicable laws or regulations to be included in, or incorporated by reference in, the Registration Statement and the Prospectus. The financial data set forth in, or incorporated by reference in, the Registration Statement and the Prospectus, as the case may be, under the captions “Capitalization” and “Selected Financial Data,” fairly present, in all material respects, the information set forth therein on a basis consistent with that of the audited financial statements or unaudited condensed consolidated financial statements contained in or incorporated by reference in the Registration Statement and the Prospectus. All disclosures contained in or incorporated by reference in the Registration Statement, the Prospectus and any free writing prospectus that constitute non-GAAP financial measures (as defined by the rules and regulations under the Securities Act and the Exchange Act) comply in all material respects with Regulation G under the Exchange Act and Item 10 of Regulation S-K under the Securities Act, as applicable. To the Company’s knowledge, no person who has been suspended or barred from being associated with a registered public accounting firm, or who has failed to comply with any sanction pursuant to Rule 5300 promulgated by the PCAOB, has participated in or otherwise aided the preparation of, or audited, the financial statements or other financial data filed with the Commission as a part of or incorporated by reference in the Registration Statement and the Prospectus. The interactive data in eXtensible Business Reporting Language included or incorporated by reference in the Registration Statement fairly presents the information called for in all material respects and has been prepared in accordance with the Commission’s rules and guidelines applicable thereto.

(l) Company’s Accounting System. The Company and each of its subsidiaries make and keep accurate books and records and maintain a system of internal accounting controls sufficient to provide reasonable assurance that: (i) transactions are executed in accordance with management’s general or specific authorization; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with IFRS and to maintain accountability for assets; (iii) access to assets is permitted only in accordance with management’s general or specific authorization; and (iv) the recorded accountability for assets is compared with existing assets at reasonable intervals and appropriate action is taken with respect to any differences.

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(m) Disclosure Controls and Procedures; Deficiencies in or Changes to Internal Control Over Financial Reporting. The Company has established and maintains disclosure controls and procedures (as defined in Rules 13a-15 and 15d-15 under the Exchange Act), which (i) are designed to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to the Company’s principal executive officer and its principal financial officer by others within those entities and (ii) are effective in all material respects to perform the functions for which they were established. Except as disclosed in the Registration Statement and the Prospectus, since the end of the Company’s most recent audited fiscal year, there have been no significant deficiencies or material weakness in the Company’s internal control over financial reporting (whether or not remediated) and no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting. The Company is not aware of any change in its internal control over financial reporting that has occurred during its most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

(n) Incorporation and Power of the Company. The Company is duly constituted and is validly existing as a société anonyme under the laws of France and has the corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement and the Prospectus and to enter into and perform its obligations under this Agreement. The Company is duly qualified as a foreign corporation to transact business and is in good standing (where such concept exists) in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to so qualify or to be in good standing outside of France would not reasonably be expected, individually or in the aggregate, to have a material adverse effect on the condition (financial or otherwise), earnings, business, properties, operations, assets, liabilities or prospects of the Company and its subsidiaries, considered as one entity (a “Material Adverse Effect”). Each member of the corporate bodies of the Company has been duly elected or appointed in such capacity and exercises his or her functions in accordance with applicable laws and regulations and the Company’s by-laws and internal regulations.

(o) Subsidiaries. Each of the Company’s “subsidiaries” (for purposes of this Agreement, as defined in Rule 405 under the Securities Act) has been duly incorporated or organized, as the case may be, and is validly existing as a corporation, partnership or limited liability company, as applicable, in good standing (where such concept exists) under the laws of the jurisdiction of its incorporation or organization, as the case may be, and has the power and authority (corporate or other) to own, lease and operate its properties and to conduct its business as described in the Registration Statement and the Prospectus. Each of the Company’s subsidiaries is duly qualified as a foreign corporation, partnership or limited liability company, as applicable, to transact business and is in good standing (where such concept exists) in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to so qualify or to be in good standing would not reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect. All of the issued and outstanding share capital or other equity or ownership interests of each of the Company’s subsidiaries has been duly authorized and validly issued, is fully paid and non-assessable and is owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, encumbrance, charge or adverse claim. The Company does not own or control, directly or indirectly, any corporation, partnership, limited liability company, association or other entity other than the subsidiaries listed in or included as an exhibit to the Company’s most recent Annual Report on Form 20-F.

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(p) Capitalization and Other Share Capital Matters. The authorized, issued and outstanding share capital of the Company is as set forth in the Registration Statement and the Prospectus under the caption “Capitalization” (other than for subsequent issuances, if any, pursuant to employee benefit plans, free shares or upon the exercise of outstanding options or warrants (including founder’s share warrants (BSPCE) and share warrants (BSA)), in each case referred to in the Registration Statement and the Prospectus). The share capital of the Company, including the Placement Shares, conforms in all material respects to each description thereof contained in the Prospectus. All of the issued and outstanding Ordinary Shares and any outstanding ADSs have been duly authorized and validly issued (by the Depositary in the case of ADRs), are fully paid and non-assessable and freely negotiable and have been issued in compliance with French law and, to the extent applicable, all United States federal, state and local securities laws. None of the outstanding Ordinary Shares or ADSs were issued in violation of any preemptive rights, rights of first refusal or other similar rights to subscribe for or purchase securities of the Company that have not been duly excluded, waived or satisfied. There are no authorized or outstanding options, warrants, preemptive rights, rights of first refusal or other rights to purchase, or equity or debt securities convertible into or exchangeable or exercisable for, any share capital of the Company or any of its subsidiaries other than those described or disclosed in the Registration Statement and the Prospectus. The descriptions of the Company’s (i) stock option, stock bonus and other stock plans or arrangements, and the options or other rights granted thereunder, and (ii) founder’s share warrants (BSPCE), share warrants (BSA) and free shares, and the rights granted thereunder set forth in the Registration Statement and the Prospectus accurately and fairly present, in all material respects, the information required to be shown under applicable laws and regulations with respect to such plans, arrangements, options and rights. The ADRs evidencing the ADSs are in due and proper form.

(q) Total number of Underlying Ordinary Shares to be issued. As of the date of each Placement Notice and as of each Settlement Date, the maximum number of Underlying Ordinary Shares that can be issued over a given rolling 12-months period, pursuant to Section 1(i) above, has not been exceeded, except if, at these dates, an admission prospectus has been filed with the Financial markets authority in France (AMF), in compliance with French law requirements.

(r) Stock Exchange Listing. The ADSs are registered pursuant to Section 12(b) or Section 12(g) of the Exchange Act and are listed on Nasdaq, and the Company has taken no action designed to, or reasonably likely to have the effect of, terminating the registration of the ADSs under the Exchange Act or delisting the ADSs from the Exchange, nor has the Company received any notification that the Commission or Nasdaq is contemplating terminating such registration or listing.

(s) Non-Contravention of Existing Instruments; No Further Authorizations or Approvals Required. Neither the Company nor any of its subsidiaries is in violation of its articles of association or by-laws, partnership agreement or operating agreement or similar organizational documents, as applicable, or is in default (or, with the giving of notice or lapse of time, would be in default) (“Default”) under any indenture, loan, credit agreement, note, lease, license agreement, contract, franchise or other instrument (including, without limitation, any pledge agreement, security agreement, mortgage or other instrument or agreement evidencing, guaranteeing, securing or relating to indebtedness) to which the Company or any of its subsidiaries is a party or by which it or any of them may be bound, or to which any of their respective properties or assets are subject (each, an “Existing Instrument”), except for such Defaults as would not reasonably be expected, individually or in the aggregate, to have a

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Material Adverse Effect. The Company’s execution, delivery and performance of this Agreement, consummation of the transactions contemplated hereby, by the Deposit Agreement and by the Registration Statement, the F-6 Registration Statement and the Prospectus, the issuance of the Underlying Ordinary Shares and the issuance and sale of the Placement Shares (including the use of proceeds from the sale of the Placement Shares as described in the Registration Statement and the Prospectus under the caption “Use of Proceeds”) (i) have been duly authorized by all necessary corporate action and will not result in any violation of the provisions of the articles of association or by-laws, partnership agreement or operating agreement or similar organizational documents, as applicable, of the Company or any subsidiary, (ii) will not conflict with or constitute a breach of, or Default or a Debt Repayment Triggering Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any of its subsidiaries pursuant to, or require the consent of any other party to, any Existing Instrument, and (iii) will not result in any violation of any law, administrative regulation or administrative or court decree applicable to the Company or any of its subsidiaries, except for such violations, conflicts, breaches, Defaults, Debt Repayment Triggering Event, lien, charge or encumbrance specified in clauses (ii) and (iii) above as would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect. No consent, approval, authorization or other order of, or registration or filing with, any court or other governmental or regulatory authority or agency, is required for, or in connection with, the Company’s execution, delivery and performance of this Agreement and consummation of the transactions contemplated hereby, by the Deposit Agreement and by the Registration Statement, the F-6 Registration Statement and the Prospectus, except for the publication by Euronext of a notice (avis) with respect to the listing of the Underlying Ordinary Shares and such as have been obtained or made by the Company and are in full force and effect under the Securities Act and such as may be required under applicable state securities or blue sky laws or the Financial Industry Regulatory Authority, Inc. (“FINRA”) or Nasdaq. As used herein, a “Debt Repayment Triggering Event” means any event or condition which gives, or with the giving of notice or lapse of time would give, the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any of its subsidiaries.

(t) Compliance with Laws. The Company and its subsidiaries have been and are in compliance with all applicable laws, rules and regulations, except where failure to be so in compliance would not reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect.

(u) No Material Actions or Proceedings. There is no action, suit, proceeding, inquiry or investigation brought by or before any governmental entity now pending or, to the knowledge of the Company, threatened, against or affecting the Company or any of its subsidiaries, which would reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect or materially and adversely affect the consummation of the transactions contemplated by this Agreement or the Deposit Agreement or the performance by the Company of its obligations hereunder or thereunder; and the aggregate of all pending legal or governmental proceedings to which the Company or any of its subsidiaries is a party or of which any of their respective properties or assets is the subject, including ordinary routine litigation incidental to the business, if determined adversely to the Company or such subsidiaries, would not reasonably be expected

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to have a Material Adverse Effect. No labor dispute with the employees of the Company or any of its subsidiaries, or with the employees of any principal supplier, manufacturer, customer or contractor of the Company, exists or, to the knowledge of the Company, is threatened or imminent, which could reasonably be expected to result in a Material Adverse Effect.

(v) Intellectual Property Rights. The Company and its subsidiaries own, or have obtained valid and enforceable licenses for, the inventions, patent applications, patents, trademarks, trade names, service names, copyrights, trade secrets and other intellectual property described in the Registration Statement and the Prospectus as being owned or licensed by them or which are necessary for the conduct of their respective businesses as currently conducted or as currently proposed to be conducted (collectively, “Intellectual Property”). To the Company’s knowledge: (i) there are no third parties who have rights to any Intellectual Property, except for customary reversionary rights of third-party licensors with respect to Intellectual Property that is disclosed in the Registration Statement and the Prospectus as licensed to the Company or one or more of its subsidiaries; and (ii) there is no infringement by third parties of any Intellectual Property. There is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others challenging the Company’s rights in or to any Intellectual Property, challenging the validity, enforceability or scope of any Intellectual Property or asserting that the Company or any of its subsidiaries infringes or otherwise violates, or would, upon the commercialization of any product or service described in the Registration Statement, and the Prospectus as under development, infringe or violate, any patent, trademark, trade name, service name, copyright, trade secret or other proprietary rights of others; the Company is unaware of any facts which would form a reasonable basis for any of the foregoing actions, suits, proceedings or claims. To the Company’s knowledge, the Company and its subsidiaries have complied with the material terms of each agreement pursuant to which Intellectual Property has been licensed to the Company or any subsidiary, and all such agreements are in full force and effect. The product candidates described in the Registration Statement and the Prospectus as under development by the Company or any subsidiary fall within the scope of the claims of one or more patents owned by, or exclusively licensed to, the Company or any subsidiary.

(w) All Necessary Permits, etc. The Company and its subsidiaries possess such valid and current certificates, authorizations or permits required by French, United States (state or federal) or other foreign regulatory agencies or bodies to conduct their respective businesses as currently conducted and as described in the Registration Statement and the Prospectus (“Permits”), except where failure to so possess would not reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect. Except as would not reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect, neither the Company nor any of its subsidiaries is in violation of, or in default under, any of the Permits or has received any notice of proceedings relating to the revocation or modification of, or non-compliance with, any such Permit.

(x) Title to Properties. The Company and its subsidiaries have good and marketable title to all of the real and personal property and other assets reflected as owned in the financial statements referred to in Section 6(k) above (or elsewhere in the Registration Statement and the Prospectus), in each case free and clear of any security interests, mortgages, liens, encumbrances, equities, adverse claims and other defects, except as would not reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect. The real property,

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improvements, equipment and personal property material to its business held under lease by the Company or any of its subsidiaries are held under valid and enforceable leases, with such exceptions as are not material and do not materially interfere with the use made or proposed to be made of such real property, improvements, equipment or personal property by the Company or such subsidiary.

(y) Tax Law Compliance. The Company and its subsidiaries have timely filed when due all necessary United States federal, state, local, and French and foreign income, franchise and other material tax returns required to be filed through the date hereof, or have properly requested extensions thereof and have paid all taxes required to be paid by any of them through the date hereof and, if due and payable, any related or similar assessment, fine or penalty levied against any of them except as may be being contested in good faith and by appropriate proceedings or except where the failure to file a tax return or the failure to pay any tax would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. None of the Company or its subsidiaries is under audit by governmental authorities, and none of them has received written notice of any such audit other than with respect to routine tax audits which the Company does not reasonably believe would have a Material Adverse Effect. The Company has made adequate charges, accruals and reserves in the applicable financial statements referred to in Section 6(k) above in respect of all unpaid United States federal, state, local, and French and foreign income, franchise and other material taxes except for such taxes as could not reasonably be expected to result in a Material Adverse Effect. Assuming that Cowen is not otherwise subject to taxation in France due to French tax residence or the existence of a permanent establishment in France, except as described in the Registration Statement or the Prospectus, no transaction, documentary, stamp, capital or other issuance, registration, transaction, transfer or withholding tax or duty (including, for the avoidance of doubt, financial transaction tax as set out in Article 235 ter ZD of the Code général des impôts) is payable in France by or on behalf of Cowen to any taxing authority in connection with (i) the issuance, sale and delivery of the Placement Shares by the Company, the issuance of the ADSs by the Depositary; (ii) the purchase from the Company, and the initial sale and delivery by Cowen of the Placement Shares to purchasers thereof; (iii) the holding or transfer of the Placement Shares; (iv) the deposit of the Ordinary Shares with the Depositary and the issuance and delivery by the Depositary of the ADRs evidencing the ADSs; or (v) the execution and delivery of this Agreement or the Deposit Agreement or any other document to be furnished hereunder.

(z) Insurance. Each of the Company and its subsidiaries are insured by recognized, financially sound and reputable institutions with policies in such amounts and with such deductibles and covering such risks as are generally deemed adequate and customary for their businesses including, but not limited to, policies covering real and personal property owned or leased by the Company and its subsidiaries against theft, damage, destruction, acts of vandalism and earthquakes and policies covering the Company and its subsidiaries for product liability claims and clinical trial liability claims. The Company has no reason to believe that it or any of its subsidiaries will not be able (i) to renew its existing insurance coverage as and when such policies expire or (ii) to obtain comparable coverage from similar institutions as may be necessary or appropriate to conduct its business as now conducted and at a cost that would not reasonably be expected to have a Material Adverse Effect. Neither the Company nor any of its subsidiaries has been denied any insurance coverage which it has sought or for which it has applied.

(aa) Compliance with Environmental Laws. Except as would not reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect: (i) neither the Company nor any of its subsidiaries is in violation of any French, United States (federal or state)

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or other foreign statute, law, rule, regulation, ordinance, code, policy or rule of common law or any judicial or administrative interpretation thereof, including any judicial or administrative order, consent, decree or judgment, relating to pollution or protection of human health, the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to the release or threatened release of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum or petroleum products (collectively, “Hazardous Materials”) or to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials (collectively, “Environmental Laws”); (ii) the Company and its subsidiaries have all permits, authorizations and approvals required under any applicable Environmental Law and are each in compliance with their requirements; (iii) there are no pending or, to the Company’s knowledge, threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, notices of noncompliance or violation, investigation or proceedings relating to any Environmental Law against the Company or any of its subsidiaries; and (iv) to the Company’s knowledge, there are no events or circumstances existing as of the date hereof that would reasonably be expected to form the basis of an order for clean-up or remediation, or an action, suit or proceeding by any private party or governmental body or agency, against or affecting the Company or any of its subsidiaries relating to Hazardous Materials or any Environmental Laws.

(bb) Benefit Plans Compliance. Each benefit, pension and compensation plan, agreement, policy and arrangement that is maintained, administered or contributed to by the Company or any of its subsidiaries for current or former employees or directors of the Company or any of its subsidiaries, or with respect to which any of such entities could reasonably be expected to have any current, future or contingent liability or responsibility, has been maintained in compliance with its terms and the requirements of any applicable statutes, orders, rules and regulations, except as would not individually or in the aggregate be expected to have a Material Adverse Effect and except with respect to matters over which none of the Company or its subsidiaries have control; the Company and each of its subsidiaries have complied with all applicable statutes, orders, rules and regulations in regard to such plans, agreements, policies and arrangements, except as would not individually or in the aggregate be expected to have Material Adverse Effect; and the fair market value of the assets of each such plan, agreement, policy and arrangement which is required or intended to be funded (excluding for these purposes accrued but unpaid contributions) exceeds the present value of all benefits accrued or earned or payments due under such plan, agreement, policy or arrangement determined using reasonable actuarial assumptions. The liabilities reflected on the relevant entity’s financial statements with respect to each such plan, agreement, policy and arrangement which is not required or intended to be funded accurately reflects the present value of all benefits earned or accrued or payments due under such plan, agreement, policy or arrangement determined using reasonable actuarial assumptions.

(cc) Compliance with the Sarbanes-Oxley Act. There is and has been no failure on the part of the Company and any of the Company’s directors or officers, in their capacities as such, to comply with any provision of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in connection therewith (the “Sarbanes-Oxley Act”) to which it is or has been subject, including Section 402 relating to loans.

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(dd) Company Not an “Investment Company.” The Company is not, and will not be, either after receipt of payment for the Placement Shares or after the application of the proceeds therefrom as described under the caption “Use of Proceeds” in the Registration Statement, or the Prospectus, required to register as an “investment company” under the Investment Company Act of 1940, as amended (the “Investment Company Act”).

(ee) No Price Stabilization or Manipulation; Compliance with Regulation M. Neither the Company nor any of its subsidiaries has taken, directly or indirectly (without giving effect to the activities by Cowen), any action designed to or that would reasonably be expected to cause or result in stabilization or manipulation of the price of the Placement Shares or of any “reference security” (as defined in Rule 100 of Regulation M under the Exchange Act) with respect to the Placement Shares, whether to facilitate the sale or resale of the Placement Shares or otherwise, and has taken no action which would directly or indirectly violate Regulation M under the Exchange Act. Neither the Company, nor any of its subsidiaries, has taken, directly or indirectly, any action designed to cause or to result in, or that has constituted or that might reasonably be expected to cause or result in, the stabilization of the Placement Shares in violation of applicable European Union and French laws or manipulation of the price of any security of the Company to facilitate the sale or resale of the Placement Shares.

(ff) No Market Abuse. The Company has complied and complies with any and all applicable rules relating to market abuse (including insider trading) and has taken adequate measures and has adequate procedures in place in order to ensure such compliance, and none of the allotment of the Placement Shares, the sale of the Placement Shares and the consummation of the transactions contemplated by this Agreement will constitute a violation by the Company of any applicable “insider dealing,” “insider trading” or similar legislation and no person acting on its behalf has done any act or engaged in any course of conduct constituting such violation.

(gg) Related-Party Transactions. There are no business relationships or related-party transactions, including conventions réglementées under Article L. 225-38 et seq. of the French Commercial Code, involving the Company or any of its subsidiaries or any other person required to be described in the Registration Statement or the Prospectus that have not been described as required. All related party transactions described therein have been duly authorized and executed by the Company or one of its subsidiaries, as the case may be. Neither the Company nor any of its subsidiaries is engaged in any material transaction with their respective directors, officers, management shareholders or any other person, including persons formerly holding such positions, on terms that are not available from or to other parties on an arm’s-length basis.

(hh) FINRA Matters. All of the information provided to Cowen or to counsels for Cowen by the Company, its counsels, its officers and directors and the holders of any securities (debt or equity) or options to acquire any securities of the Company in connection with the offering of the Placement Shares is true, complete, correct and compliant with FINRA’s rules in all material respects and any letters, filings or other supplemental information provided to FINRA by the Company pursuant to FINRA Rules or NASD Conduct Rules is true, complete and correct in all material respects.

(ii) [Reserved.]

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(jj) Statistical and Market-Related Data. All statistical, demographic and market-related data included in or incorporated by reference in the Registration Statement or the Prospectus are based on or derived from sources that the Company believes, after reasonable inquiry, to be reliable and accurate in all material respects. To the extent required, the Company has obtained a written consent permitting the use of such data from such sources.

(kk) No Unlawful Contributions or Other Payments. Neither the Company nor any of its subsidiaries nor, to the Company’s knowledge, any employee or agent of the Company or any subsidiary, has made any contribution or other payment to any official of, or candidate for, any federal, state or foreign office in violation of any law or of the character required to be disclosed in the Registration Statement or the Prospectus.

(ll) Foreign Corrupt Practices Act and Anti-Bribery Laws. Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee, affiliate or other person acting on behalf of the Company or any of its subsidiaries has, in the course of its actions for, or on behalf of, the Company or any of its subsidiaries (i) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expenses relating to political activity; (ii) made any direct or indirect unlawful payment to any domestic government official, “foreign official” (as defined in the U.S. Foreign Corrupt Practices Act of 1977, as amended) (the “FCPA”), employee, political party, political party official, or candidate for political office, from corporate funds; (iii) violated or is in violation of any applicable provision of the FCPA or the English common law offence of bribery, the U.K. Bribery Act 2010, Articles 432-11 et seq., 433-1 and 433-2, 433-22 to 433-25, 435-1 et seq. and 445-1 et seq. of the French Criminal Code, or any applicable anti-corruption laws, rules, or regulations of the European Union or any other jurisdiction in which the Company conducts business (collectively, the “Anti-Bribery Laws”); or (iv) made any unlawful bribe, rebate, payoff, influence payment, kickback or other unlawful payment to any domestic government official, “foreign official” as defined in the FCPA, employee, political party, political party official, or candidate for political office. The Company and its subsidiaries and, to the knowledge of the Company, the Company’s affiliates have conducted their respective businesses in compliance with all Anti-Bribery Laws, and have instituted and maintain, policies and procedures designed to ensure, and which are reasonably expected to continue to ensure, continued compliance therewith.

(mm) Money Laundering Laws. The operations of the Company and its subsidiaries are, and have been conducted at all times, in compliance with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of all applicable jurisdictions, the rules and regulations thereunder and any related or similar applicable rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Money Laundering Laws”) and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Money Laundering Laws is pending or, to the knowledge of the Company, threatened.

(nn) OFAC and other Sanctions Regimes. Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, after due inquiry, any director, officer, agent, employee, affiliate or person acting on behalf of the Company (except for Cowen, in respect of which the Company makes no representation) or any of its subsidiaries is (i) a person, or is owned or controlled by a person that is, designated in the most current version of the Specially

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Designated Nationals and Blocked Persons List or the List of Foreign Financial Institutions Subject to Part 561, which are both maintained by the Office of Foreign Assets Control of the U.S. Treasury Department (“OFAC”), or any applicable prohibited party list maintained by any U.S. government agency, French government agency, the European Union, or Her Majesty’s Treasury, or (ii) currently subject to any sanctions administered by OFAC, the United Nations Security Council, the European Union, Her Majesty’s Treasury, or any French government agency (collectively, the “Relevant Sanctions Authorities”). The Company will not directly or indirectly use the proceeds of this offering, or lend, contribute or otherwise make available such proceeds to any subsidiary, any joint venture partner or other person or entity, for the purpose of financing the activities of or business with any person, or in any country or territory, that currently is subject to any sanctions administered by the Relevant Sanctions Authorities, or in any other manner that will result in a violation by any person (including any person participating in the transaction whether as a sales agent, advisor, investor or otherwise) of sanctions administered by the Relevant Sanctions Authorities.

(oo) Brokers. Except pursuant to this Agreement, there is no broker, finder or other party that is entitled to receive from the Company any brokerage or finder’s fee or other fee or commission as a result of the transactions contemplated by this Agreement.

(pp) Submission to Jurisdiction. The Company has the power to submit, and pursuant to Section 16 of this Agreement, has legally, validly, effectively and irrevocably submitted, to the personal jurisdiction of each United States federal court and New York state court located in the Borough of Manhattan, in the City of New York, New York, U.S.A. (each, a “New York Court”), and the Company has the power to designate, appoint and authorize, and pursuant to Section 16 of this Agreement, has legally, validly, effectively and irrevocably designated, appointed and authorized an agent for service of process in any action arising out of or relating to this Agreement or the ADSs in any New York Court, and service of process effected on such authorized agent will be effective to confer valid personal jurisdiction over the Company as provided in Section 16 hereof.

(qq) No Rights of Immunity. Except as provided by laws or statutes generally applicable to transactions of the type described in this Agreement, neither the Company nor any of its properties, assets or revenues has any right of immunity under French, New York or United States law, from any legal action, suit or proceeding, from the giving of any relief in any such legal action, suit or proceeding, from set-off or counterclaim, from the jurisdiction of any French, New York or United States federal court, from service of process, attachment upon or prior judgment, or attachment in aid of execution of judgment, or from execution of a judgment, or other legal process or proceeding for the giving of any relief or for the enforcement of a judgment, in any such court, with respect to its obligations, liabilities or any other matter under or arising out of or in connection with this Agreement or the Deposit Agreement. To the extent that the Company or any of its properties, assets or revenues may have or may hereafter become entitled to any such right of immunity in any such court in which proceedings may at any time be commenced, the Company waives or will waive such right to the extent permitted by law and has consented to such relief and enforcement as provided in Section 16 of this Agreement.

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(rr) Forward-Looking Statements. Each financial or operational projection or other “forward-looking statement” (as defined by Section 27A of the Securities Act or Section 21E of the Exchange Act) contained in the Registration Statement or the Prospectus (i) was so included by the Company in good faith and with reasonable basis after due consideration by the Company of the underlying assumptions, estimates and other applicable facts and circumstances and (ii) is accompanied by meaningful cautionary statements identifying those factors that could cause actual results to differ materially from those in such forward-looking statement. No such statement was made with the knowledge of an executive officer or director of the Company that it was false or misleading.

(ss) Emerging Growth Company Status. As of the date of this Agreement, the Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act. The Company agrees to notify Cowen promptly upon the Company ceasing to be an emerging growth company.

(tt) [Reserved.]

(uu) Clinical Data and Regulatory Compliance. The preclinical tests and clinical trials, and other studies (collectively, “studies”) being conducted by or sponsored by the Company that are described or disclosed in, or the results of which are referred to in, the Registration Statement or the Prospectus were and, if still pending, are being conducted in all material respects in accordance with the experimental protocols, procedures and controls designed and approved for such studies and with accepted standard medical and scientific research procedures; each description or disclosure of the results of such studies contained in the Registration Statement or the Prospectus is accurate and complete in all material respects and fairly presents the data derived from such studies, and the Company and its subsidiaries have no knowledge of any other studies the results of which are inconsistent with, or otherwise call into question, the results described or referred to in the Registration Statement or the Prospectus when viewed in the context in which such results are described and the state of development; the Company and its subsidiaries have made all such filings and obtained all such approvals as may be required by the Food and Drug Administration of the U.S. Department of Health and Human Services or any committee thereof or from any other U.S. or foreign government or drug or medical device regulatory agency (including the Agence Nationale de Sécurité du Médicament et des Produits), or health care facility Institutional Review Board (collectively, the “Regulatory Agencies”) to conduct their respective businesses as currently conducted and as described in the Registration Statement or the Prospectus; except as disclosed in the Registration Statement or the Prospectus, neither the Company nor any of its subsidiaries has received any notice of, or correspondence from, any Regulatory Agency requiring the termination, suspension or modification of any clinical trials conducted by or on behalf of the Company, other than ordinary course communications with respect to modifications in connection with the design and implementation of such trials; and the Company and its subsidiaries have each operated and currently are in compliance in all material respects with all applicable rules, regulations and policies of the Regulatory Agencies.

(vv) No Contract Terminations. Neither the Company nor any of its subsidiaries has sent or received any communication regarding termination of, or intent not to renew, any of the contracts or agreements referred to or described in the Prospectus, or any free writing prospectus, or referred to or described in, or filed as an exhibit to, the Registration Statement or the F-6 Registration Statement, or any document incorporated by reference therein, and no such termination or non-renewal has been threatened by the Company or any of its subsidiaries or, to the Company’s knowledge, any other party to any such contract or agreement, which threat of termination or non-renewal has not been rescinded as of the date hereof, except as described or contemplated by the Registration Statement, the Prospectus or where such termination or non-renewal would not reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect.

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(ww) Dividend Restrictions. Other than as prohibited or restricted by law, no subsidiary of the Company is prohibited or restricted, directly or indirectly, from paying dividends to the Company, or from making any other distribution with respect to such subsidiary’s equity securities or from repaying to the Company or any other subsidiary of the Company any amounts that may from time to time become due under any loans or advances to such subsidiary from the Company or from transferring any property or assets to the Company or to any other subsidiary.

(xx) Privacy Laws. The Company and each of its subsidiaries are, and, at all prior times within the past five years, were, in material compliance with all applicable data privacy and security laws and regulations, including, without limitation, the Health Insurance Portability and Accountability Act (“HIPAA”), as amended by the Health Information Technology for Economic and Clinical Health Act (42 U.S.C. Section 17921 et seq.); and the Company and each of its subsidiaries have taken all reasonable actions to comply in all material respects with the European Union General Data Protection Regulation (“GDPR”) (EU 2016/679) (collectively, “Privacy Laws”). In a manner reasonably designed to comply with the Privacy Laws, the Company and each of its subsidiaries have in place, comply with, and take appropriate steps reasonably designed to comply in all material respects with their policies and procedures relating to data privacy and security and the collection, storage, use, disclosure, handling and analysis of Personal Data (the “Policies”). The Company provides materially accurate notice of its Policies when and to the extent required by Privacy Laws to its customers, employees, third party vendors and representatives. The Policies provide accurate and legally sufficient notice of the Company’s then-current privacy practices relating to its subject matter and such Policies do not contain any material omissions of the Company’s then-current privacy practices. “Personal Data” means (i) a natural persons’ name, street address, telephone number, email address, photograph, social security number, bank information, or customer or account number; (ii) any information which would qualify as “personally identifying information” under the Federal Trade Commission Act, as amended; (iii) Protected Health Information as defined by HIPAA; (iv) “personal data” as defined by GDPR; and (v) any other piece of information that reasonably allows the identification of such natural person, or permits the collection or analysis of any data related to an identified person’s health or sexual orientation. None of such disclosures made or contained in any of the Policies have been inaccurate, misleading, deceptive or in violation of any Privacy Laws in any material respect. The execution, delivery and performance of this Agreement or any other agreement referred to in this Agreement will not result in a breach of any Privacy Laws or Policies. Neither the Company nor any of its subsidiaries, (i) has received notice of any actual or potential liability under, or actual or potential violation of, any of the Privacy Laws, and has no knowledge of any event or condition that would reasonably be expected to result in any such notice; (ii) is currently conducting or paying for, in whole or in part, any investigation, remediation or other corrective action pursuant to any Privacy Law arising from any allegations of noncompliance with any of the Privacy Laws made by a person, governmental authority or competent supervisory authority in the European Union; or (iii) is a party to any governmental order or decree, or agreement with a governmental authority or competent supervisory authority in the European Union, that imposed any obligation or liability under any Privacy Law.

(yy) IT Systems. (i)(x) Within the past five years, there has been no security breach or attack or other compromise of or relating to any of the Company’s and its subsidiaries’ information technology and computer systems, networks, hardware, software, Personal Data (including the Personal Data of their respective customers, employees, suppliers, vendors and any third party data maintained by or on behalf of them), equipment or technology (“IT Systems and Data”) that involved unauthorized access to, or malicious disruption of IT Systems and Data or other incidents involving the unauthorized access, acquisition, use or disclosure of any Personal Data within the Company’s or its subsidiaries’ possession, custody, or control, and (y) the Company and its subsidiaries have not received notice of, and have no knowledge of any event or condition that would reasonably be expected to result in any security breach, attack or compromise to their IT Systems and Data which would, in the case of clauses (x) and (y), reasonably be expected, individually or in the aggregate, to have a Material Adverse Effect, (ii) within the past five years, the Company and each of its subsidiaries have complied, and are presently in compliance in all material respects with, all applicable laws, statutes or any judgment, order, rule or regulation of any court or arbitrator or governmental or regulatory authority that are binding on Company or its subsidiaries, and all applicable industry guidelines or standards that Company or its subsidiaries have contractually agreed to follow, internal policies and contractual obligations relating to the privacy and security of IT Systems and Data and to the protection of such IT Systems and Data from unauthorized use, access, misappropriation or modification and (iii) the Company and each of its subsidiaries have implemented backup and disaster recovery technology.

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(zz) No Reliance. The Company has not relied upon Cowen or legal counsel for Cowen for any legal, tax or accounting advice in connection with the offering and sale of the Placement Shares.

(aaa) Cowen Purchases. The Company acknowledges and agrees that Cowen has informed the Company that Cowen may, to the extent permitted under the Securities Act and the Exchange Act, purchase and sell ADSs for its own account while this Agreement is in effect, provided, that (i) no such purchase or sales shall take place while a Placement Notice is in effect (except to the extent Cowen may engage in sales of Placement Shares purchased or deemed purchased from the Company as a “riskless principal” or in a similar capacity) and (ii) the Company shall not be deemed to have authorized or consented to any such purchases or sales by Cowen.

Any certificate signed by an officer of the Company and delivered to Cowen or to counsel for Cowen shall be deemed to be a representation and warranty by the Company to Cowen as to the matters set forth therein.

The Company acknowledges that Cowen and, for purposes of the opinions to be delivered pursuant to Section 7 hereof, counsel to the Company and counsel to Cowen, will rely upon the accuracy and truthfulness of the foregoing representations and hereby consents to such reliance.

7. Covenants

7.1. Covenants of the Company. The Company covenants and agrees with Cowen that:

(a) Registration Statement Amendments. After the date of this Agreement and during any period in which a Prospectus relating to any Placement Shares is required to be delivered by Cowen under the Securities Act (including in circumstances where such requirement may be satisfied pursuant to Rule 172 under the Securities Act), (i) the Company will notify Cowen promptly of the time when any subsequent amendment to the Registration Statement, other than documents incorporated by reference, has been filed with the Commission and/or has become

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effective or any subsequent supplement to the Prospectus has been filed and of any request by the Commission for any amendment or supplement to the Registration Statement or Prospectus or for additional information, (ii) the Company will prepare and file with the Commission, promptly upon Cowen’s request, any amendments or supplements to the Registration Statement or Prospectus that, in Cowen’s reasonable opinion, may be necessary or advisable in connection with the distribution of the Placement Shares by Cowen (provided, however, that the failure of Cowen to make such request shall not relieve the Company of any obligation or liability hereunder, or affect Cowen’s right to rely on the representations and warranties made by the Company in this Agreement); (iii) the Company will not file any amendment or supplement to the Registration Statement or Prospectus, other than documents incorporated by reference, relating to the Placement Shares or a security convertible into the Placement Shares unless a copy thereof has been submitted to Cowen within a reasonable period of time before the filing and Cowen has not reasonably objected thereto (provided, however, that the failure of Cowen to make such objection shall not relieve the Company of any obligation or liability hereunder, or affect Cowen’s right to rely on the representations and warranties made by the Company in this Agreement) and the Company will furnish to Cowen at the time of filing thereof a copy of any document that upon filing is deemed to be incorporated by reference into the Registration Statement or Prospectus, except for those documents available via EDGAR; (iv) the Company will cause each amendment or supplement to the Prospectus, other than documents incorporated by reference, to be filed with the Commission as required pursuant to the applicable paragraph of Rule 424(b) of the Securities Act, and (v) during the term of this Agreement, the Company will notify Cowen if at any time the Registration Statement shall no longer be effective as a result of the passage of time pursuant to Rule 415 under the Securities Act or otherwise. Prior to the initial sale of any Placement Shares, the Company shall file a final Prospectus Supplement pursuant to Rule 424(b) relating to the Placement Shares.

(b) Notice of Commission Stop Orders. The Company will advise Cowen, promptly after it receives notice or obtains knowledge thereof, of the issuance or threatened issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement, of the suspension of the qualification of the Placement Shares for offering or sale in any jurisdiction, or of the initiation or threatening of any proceeding for any such purpose; and it will promptly use its commercially reasonable efforts to prevent the issuance of any stop order or to obtain its withdrawal if such a stop order should be issued.

(c) Delivery of Prospectus; Subsequent Changes. During any period in which a Prospectus relating to the Placement Shares is required to be delivered by Cowen under the Securities Act with respect to a pending sale of the Placement Shares, (including in circumstances where such requirement may be satisfied pursuant to Rule 172 under the Securities Act), the Company will comply with all requirements imposed upon it by the Securities Act, as from time to time in force, and to file on or before their respective due dates (taking into account any extensions available under the Exchange Act) all reports and any definitive proxy or information statements required to be filed by the Company with the Commission pursuant to Sections 13(a), 13(c), 14, 15(d) or any other provision of or under the Exchange Act. If during such period any event occurs as a result of which the Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances then existing, not misleading, or if during such period it is necessary to amend or supplement

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the Registration Statement or Prospectus to comply with the Securities Act, the Company will as promptly as practicable notify Cowen to suspend the offering of Placement Shares during such period and the Company will promptly amend or supplement the Registration Statement or Prospectus (at the expense of the Company) so as to correct such statement or omission or effect such compliance; provided, that, the Company may delay the filing of any amendment or supplement, if in the judgment of the Company, it is in the best interest of the Company, during which time of delay Cowen shall be under no obligation to make any sales of Placement Shares hereunder.

(d) Listing of Placement Shares. During any period in which the Prospectus relating to the Placement Shares is required to be delivered by Cowen under the Securities Act with respect to a pending sale of the Placement Shares (including in circumstances where such requirement may be satisfied pursuant to Rule 172 under the Securities Act), the Company will use its commercially reasonable efforts to cause the Placement Shares to be listed on Nasdaq and to qualify the Placement Shares for sale under the securities laws of such jurisdictions as Cowen reasonably designates and to continue such qualifications in effect so long as required for the distribution of the Placement Shares; provided, however, that the Company shall not be required in connection therewith to qualify as a foreign corporation or dealer in securities or file a general consent to service of process in any jurisdiction.

(e) Delivery of Registration Statement and Prospectus. The Company will furnish to Cowen and its counsel (at the expense of the Company) copies of the Registration Statement, the Prospectus (including all documents incorporated by reference therein) and all amendments and supplements to the Registration Statement or Prospectus that are filed with the Commission during any period in which a Prospectus relating to the Placement Shares is required to be delivered under the Securities Act (including all documents filed with the Commission during such period that are deemed to be incorporated by reference therein), in each case as soon as reasonably practicable and in such quantities as Cowen may from time to time reasonably request and, at Cowen’s request, will also furnish copies of the Prospectus to each exchange or market on which sales of the Placement Shares may be made; provided, however, that the Company shall not be required to furnish any document (other than the Prospectus) to Cowen to the extent such document is available on EDGAR.

(f) Earnings Statement. The Company will make generally available to its security holders as soon as practicable, but in any event not later than 15 months after the end of the Company’s current fiscal quarter, an earnings statement covering a 12-month period that satisfies the provisions of Section 11(a) and Rule 158 of the Securities Act.

(g) Expenses. The Company, whether or not the transactions contemplated hereunder are consummated or this Agreement is terminated, in accordance with the provisions of Section 11 hereunder, will pay the following expenses all incident to the performance of its obligations hereunder, including, but not limited to, expenses relating to (i) the preparation, printing and filing of the Registration Statement and each amendment and supplement thereto, of each Prospectus and of each amendment and supplement thereto, (ii) the preparation, issuance and Placement Shares, (iii) the qualification of the Placement Shares under securities laws in accordance with the provisions of Section 7(d) of this Agreement, including filing fees (provided, however, that any fees or disbursements of counsel for Cowen in connection therewith shall be paid by Cowen except as set forth in (vii) below), (iv) the printing and

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delivery to Cowen of copies of the Prospectus and any amendments or supplements thereto, and of this Agreement, (v) the fees and expenses incurred in connection with the listing or qualification of the Placement Shares for trading on Nasdaq, (vi) the filing fees and expenses, if any, of the Commission, (vii) the filing fees and associated legal expenses of Cowen’s outside counsel for filings with the FINRA Corporate Financing Department, such legal expense reimbursement not to exceed $20,000 and (viii) the reasonable fees and disbursements of Cowen’s counsel in an amount not to exceed $100,000 without the prior written consent of the Company, provided, however, in no event shall the total compensation paid to Cowen exceed 8.0% of the gross proceeds to the Company from the sale of the Placement Shares.

(h) Use of Proceeds. The Company will use the Net Proceeds as described in the Prospectus in the section entitled “Use of Proceeds.”

(i) Notice of Other Sales. During the pendency of any Placement Notice given hereunder, and for 5 Trading Days following the termination of any Placement Notice given hereunder^, the Company shall provide Cowen notice as promptly as reasonably possible before it offers to sell, contracts to sell, sells, grants any option to sell or otherwise disposes of any Ordinary Shares or ADSs (other than Placement Shares offered pursuant to the provisions of this Agreement) or securities convertible into or exchangeable for Ordinary Shares or ADSs, warrants or any rights to purchase or acquire Ordinary Shares or ADSs; provided, that such notice shall not be required in connection with the (i) issuance, grant or sale of Ordinary Shares or ADSs, options to purchase Ordinary Shares or ADSs or Ordinary Shares or ADSs issuable upon the exercise of options or warrants, including founder’s share warrants (BSPCE) and share warrants (BSA), other equity awards pursuant to any share option, share bonus or other share plan or arrangement described in the Prospectus, (ii) the issuance of securities in connection with an acquisition, merger or sale or purchase of assets, (iii) the issuance or sale of Ordinary Shares or ADSs pursuant to any dividend reinvestment plan that the Company may adopt from time to time provided the implementation of such is disclosed to Cowen in advance, (iv) any Ordinary Shares or ADSs issuable upon the exchange, conversion or redemption of securities or the exercise of warrants (including founder’s share warrants (BSPCE) and share warrants (BSA), options, free shares or other rights in effect or outstanding or (v) Ordinary Shares or ADSs or securities convertible into or exercisable for Ordinary Shares or ADSs, offered and sold in a privately negotiated transaction to vendors, customers, strategic partners or potential strategic partners and otherwise conducted in a manner so as not to be integrated with the offering of the Ordinary Shares or ADSs hereby, which includes, for the avoidance of doubt, the issuance of any securities in the context of the convertible bond financing entered into between the Company and Alpha Blue Ocean in June 2020.

(j) Change of Circumstances. The Company will, at any time during the pendency of a Placement Notice, advise Cowen promptly after it shall have received notice or obtained knowledge thereof, of any information or fact that would alter or affect in any material respect any opinion, certificate, letter or other document provided to Cowen pursuant to this Agreement.

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(k) Due Diligence Cooperation. The Company will cooperate with any reasonable due diligence review conducted by Cowen or its agents in connection with the transactions contemplated hereby, including, without limitation, providing information and making available documents and senior corporate officers, during regular business hours and at the Company’s principal offices, or such other location mutually agreeable by the parties, as Cowen may reasonably request.

(l) Required Filings Relating to Placement of Placement Shares. The Company agrees that on such dates as the Securities Act shall require, the Company will (i) file a prospectus supplement with the Commission under the applicable paragraph of Rule 424(b) under the Securities Act (each and every filing under Rule 424(b), a “Filing Date”), which prospectus supplement will set forth, within the relevant period, the amount of Placement Shares sold through or to Cowen, the Net Proceeds to the Company and the compensation payable by the Company to Cowen with respect to such Placement Shares, and (ii) deliver such number of copies of each such prospectus supplement to each exchange or market on which such sales were effected as may be required by the rules or regulations of such exchange or market.

(m) Representation Dates; Certificate. On or prior to the First Delivery Date and each time the Company (i) amends or supplements the Registration Statement or the Prospectus relating to the Placement Shares (other than a prospectus supplement filed in accordance with Section 7(l) of this Agreement) by means of a post-effective amendment, sticker, or supplement but not by means of incorporation of document(s) by reference to the Registration Statement or the Prospectus relating to the Placement Shares; (ii) files an annual report on Form 20-F under the Exchange Act; (iii) files its reports on Form 6-K under the Exchange Act containing financial information for its fiscal quarters or fiscal half, as applicable; or (iv) files a report on Form 6-K containing amended financial information (other than an earnings release) under the Exchange Act (each date of filing of one or more of the documents referred to in clauses (i) through (iv) shall be a “Representation Date”); the Company shall furnish Cowen with a certificate, in the form attached hereto as Exhibit 7(m) within three (3) Trading Days of any Representation Date if requested by Cowen. The requirement to provide a certificate under this Section 7(m) shall be waived for any Representation Date occurring at a time at which no Placement Notice is pending, which waiver shall continue until the earlier to occur of the date the Company delivers a Placement Notice hereunder (which for such calendar quarter shall be considered a Representation Date) and the next occurring Representation Date. Notwithstanding the foregoing, if the Company subsequently decides to sell Placement Shares following a Representation Date when the Company relied on such waiver and did not provide Cowen with a certificate under this Section 7(m), then before the Company delivers the Placement Notice or Cowen sells any Placement Shares, the Company shall provide Cowen with a certificate, in the form attached hereto as Exhibit 7(m), dated the date of the Placement Notice.

(n) Legal Opinions. On or prior to the First Delivery Date and within three (3) Trading Days of each Representation Date with respect to which the Company is obligated to deliver a certificate in the form attached hereto as Exhibit 7(m) for which no waiver is applicable, the Company shall cause to be furnished to Cowen a written opinion of (i) Cooley LLP, U.S. counsel for the Company (“U.S. Company Counsel”), (ii) Gide Loyrette Nouel

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A.A.R.P.I., counsel for the Company as to certain matters of French law (“French Company Counsel”) prior to the First Delivery Date only and if a Representation Date is after the next general meeting of the shareholders of the Company, and (iii) the in-house counsel for the Company (“In-house Company Counsel”), or other counsel satisfactory to Cowen, each in form and substance satisfactory to Cowen and its counsel, dated the date that the opinions are required to be delivered; provided, however, that in lieu of such opinions for subsequent Representation Dates, counsel may furnish Cowen with a letter (a “Reliance Letter”) to the effect that Cowen may rely on a prior opinion delivered under this Section 7(n) to the same extent as if it were dated the date of such letter (except that statements in such prior opinion shall be deemed to relate to the Registration Statement and the Prospectus as amended or supplemented at such Representation Date).

(o) Comfort Letter. On or prior to the First Delivery Date and within three (3) Trading Days of each Representation Date with respect to which the Company is obligated to deliver a certificate in the form attached hereto as Exhibit 7(m) for which no waiver is applicable, the Company shall cause its independent accountants to furnish Cowen letters (the “Comfort Letters”), dated the date the Comfort Letter is delivered, in form and substance satisfactory to Cowen, (i) confirming that they are an independent registered public accounting firm within the meaning of the Securities Act and the PCAOB, (ii) stating, as of such date, the conclusions and findings of such firm with respect to the financial information and other matters ordinarily covered by accountants’ “comfort letters” to Cowen in connection with registered public offerings (the first such letter, the “Initial Comfort Letter”) and (iii) updating the Initial Comfort Letter with any information that would have been included in the Initial Comfort Letter had it been given on such date and modified as necessary to relate to the Registration Statement and the Prospectus, as amended and supplemented to the date of such letter.

(p) Authorization. Upon delivery of each Placement Notice, the Company will ensure that the Chief Executive Officer of the Company is duly authorized by the general meeting of the Company and the board of directors to decide on the issue of the Underlying Ordinary Shares covered by the Placement Notice subject to the conditions set forth therein and that any relevant pre-emption rights will have been disapplied in relation to the issue of those Underlying Ordinary Shares. Upon each Settlement Date, the Underlying Ordinary Shares to be allotted on that Settlement Date will be duly authorized by the Company.

(q) Market Activities. The Company will not, directly or indirectly, (i) take any action designed to cause or result in, or that constitutes or would reasonably be expected to constitute, the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the ADSs or (ii) sell, bid for, or purchase the ADSs to be issued and sold pursuant to this Agreement, or pay anyone any compensation for soliciting purchases of the ADSs other than Cowen; provided, however, that the Company may bid for and purchase its Ordinary Shares or ADSs in accordance with Rule 10b-18 under the Exchange Act.

(r) Insurance. The Company and its subsidiaries shall maintain, or cause to be maintained, insurance in such amounts and covering such risks as is reasonable and customary for the business for which it is engaged.

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(s) Compliance with Laws. The Company and each of its subsidiaries shall maintain, or cause to be maintained, all material environmental permits, licenses and other authorizations required by federal, state and local law in order to conduct their businesses as described in the Prospectus, and the Company and each of its subsidiaries shall conduct their businesses, or cause their businesses to be conducted, in substantial compliance with such permits, licenses and authorizations and with applicable environmental laws, except where the failure to maintain or be in compliance with such permits, licenses and authorizations would not reasonably be expected to result in a Material Adverse Change.

(t) Investment Company Act. The Company will conduct its affairs in such a manner so as to reasonably ensure that neither it nor its subsidiaries will be or become, at any time prior to the termination of this Agreement, an “investment company,” as such term is defined in the Investment Company Act, assuming no change in the Commission’s current interpretation as to entities that are not considered an investment company.

(u) Securities Act and Exchange Act. The Company will use its best efforts to comply with all requirements imposed upon it by the Securities Act and the Exchange Act as from time to time in force, so far as necessary to permit the continuance of sales of, or dealings in, the Placement Shares as contemplated by the provisions hereof and the Prospectus.

(v) No Offer to Sell. Other than a free writing prospectus (as defined in Rule 405 under the Securities Act) approved in advance by the Company and Cowen in its capacity as principal or agent hereunder, neither Cowen nor the Company (including its agents and representatives, other than Cowen in its capacity as such) will make, use, prepare, authorize, approve or refer to any written communication (as defined in Rule 405 under the Securities Act), required to be filed with the Commission, that constitutes an offer to sell or solicitation of an offer to buy Placement Shares hereunder.

(w) Sarbanes-Oxley Act. The Company and its subsidiaries will use their best efforts to comply with all effective applicable provisions of the Sarbanes-Oxley Act.

7.2. Covenants of Cowen: Cowen covenants and agrees with the Company that:

(a) Investor Documents. Prior to each Settlement Date, Cowen shall have received such documents as required by French law and the limits and other conditions set forth in the corporate authorizations of the Company in a form acceptable by the Company duly executed and such documents shall be in full force and effect, including the investors letters of each prospective investor, a form of which is attached hereto in Exhibit A of Schedule 1.

8. Conditions to Cowen’s Obligations. The obligations of Cowen hereunder with respect to a Placement will be subject to the continuing accuracy and completeness of the representations and warranties made by the Company herein, to the due performance by the Company of its obligations hereunder, to the completion by Cowen of a due diligence review satisfactory to Cowen in its reasonable judgment, and to the continuing satisfaction (or waiver by Cowen in its sole discretion) of the following additional conditions:

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(a) Registration Statement Effective. The Registration Statement shall be effective and shall be available for the sale of all Placement Shares contemplated to be issued by any Placement Notice.

(b) No Material Notices. None of the following events shall have occurred and be continuing: (i) receipt by the Company or any of its subsidiaries of any request for additional information from the Commission or any other federal or state governmental authority during the period of effectiveness of the Registration Statement, the response to which would require any post-effective amendments or supplements to the Registration Statement or the Prospectus; (ii) the issuance by the Commission or any other federal or state governmental authority of any stop order suspending the effectiveness of the Registration Statement or the initiation of any proceedings for that purpose; (iii) receipt by the Company of any notification with respect to the suspension of the qualification or exemption from qualification of any of the Placement Shares for sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose; or (iv) the occurrence of any event that makes any material statement made in the Registration Statement or the Prospectus or any material document incorporated or deemed to be incorporated therein by reference untrue in any material respect or that requires the making of any changes in the Registration Statement, the related Prospectus or such documents so that, in the case of the Registration Statement, it will not contain any materially untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading and, that in the case of the Prospectus, it will not contain any materially untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading.

(c) No Misstatement or Material Omission. Cowen shall not have advised the Company that the Registration Statement or Prospectus, or any amendment or supplement thereto, contains an untrue statement of fact that in Cowen’s reasonable opinion, in consultation with outside counsel, is material, or omits to state a fact that in Cowen’s opinion is material and is required to be stated therein or is necessary to make the statements therein not misleading.

(d) Material Changes. Except as contemplated in the Prospectus, or disclosed in the Company’s reports filed with the Commission, there shall not have been any Material Adverse Change, on a consolidated basis, in the capitalization of the Company or any Material Adverse Change or any development that would reasonably be expected to result in a Material Adverse Change, or any downgrading in or withdrawal of the rating assigned to any of the Company’s securities (other than asset backed securities) by any rating organization or a public announcement by any rating organization that it has under surveillance or review its rating of any of the Company’s securities (other than asset backed securities), the effect of which, in the case of any such action by a rating organization described above, in the reasonable judgment of Cowen (without relieving the Company of any obligation or liability it may otherwise have), is so material as to make it impracticable or inadvisable to proceed with the offering of the Placement Shares on the terms and in the manner contemplated in the Prospectus.

(e) Company Counsel Legal Opinions. Cowen shall have received the opinions of U.S. Company Counsel, French Company Counsel and In-house Company Counsel required to be delivered pursuant to Section 7(n) on or before the date on which such delivery of such opinion is required pursuant to Section 7(n).

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(f) Cowen Counsel Legal Opinions. Cowen shall have received from Covington & Burling LLP, U.S. counsel for Cowen, and Linklaters LLP, French counsel for Cowen, such opinion or opinions, on or before the date on which the delivery of the U.S. Company Counsel, French Company Counsel and In-house Company Counsel legal opinions are respectively required pursuant to Section 7(n), with respect to such matters as Cowen may reasonably require, and the Company shall have furnished to such counsel such documents as they request for enabling them to pass upon such matters.

(g) Depositary’s Counsel Legal Opinion. Cowen shall have received from Emmet, Marvin & Martin, LLP, counsel for the Depositary, an opinion, on or prior to the First Delivery Date, dated as of such date, in form and substance satisfactory to Cowen and its counsel.

(h) Comfort Letter. Cowen shall have received the Comfort Letter required to be delivered pursuant to Section 7(o) on or before the date on which such delivery of such Comfort Letter is required pursuant to Section 7(o).

(i) Certificate of Chief Financial Officer. Cowen shall have received a certificate of the Chief Financial Officer on or before the day on which the delivery of the Comfort letter is required pursuant to Section 7(o), in form and substance satisfactory to Cowen and its counsel.

(j) Representation Certificate. Cowen shall have received the certificate required to be delivered pursuant to Section 7(m) on or before the date on which delivery of such certificate is required pursuant to Section 7(m).

(k) Secretary’s Certificate. On or prior to the First Delivery Date, Cowen shall have received a certificate, signed on behalf of the Company by its corporate Secretary, in form and substance satisfactory to Cowen and its counsel.

(l) No Suspension. Trading in the ADSs shall not have been suspended on Nasdaq.

(m) Other Materials. On each date on which the Company is required to deliver a certificate pursuant to Section 7(m), the Company shall have furnished to Cowen such appropriate further information, certificates and documents as Cowen may have reasonably requested. All such opinions, certificates, letters and other documents shall have been in compliance with the provisions hereof. The Company will furnish Cowen with such conformed copies of such opinions (other than any opinion contemplated by Section 8(f)), certificates, letters and other documents as Cowen shall have reasonably requested.

(n) Securities Act Filings Made. All filings with the Commission required by Rule 424 under the Securities Act to have been filed prior to the issuance of any Placement Notice hereunder shall have been made within the applicable time period prescribed for such filing by Rule 424.

(o) Approval for Listing. The Placement Shares shall either have been (i) approved for listing on Nasdaq, subject only to notice of issuance, or (ii) the Company shall have filed an application for listing of the Placement Shares on Nasdaq at, or prior to, the issuance of any Placement Notice and, on the relevant Settlement Date, the Underlying Ordinary Shares underlying the Placement Shares shall have been approved for listing on Euronext, subject to official notice of issuance.

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(p) Certificat du dépositaire. On a Settlement Date, once it has received the funds corresponding to the subscription of the applicable Underlying Ordinary Shares, for purposes of settlement and delivery of the Underlying Ordinary Shares, the Registrar shall issue the depositary certificate (certificat du dépositaire) provided for by Article L. 225-146 of the French Commercial Code, relating to the capital increase of the Company resulting from the subscription of the Underlying Ordinary Shares and the corresponding Placement Shares and shall send a copy thereof to the Company and Cowen.

(q) Deposit of Ordinary Shares. The Underlying Ordinary Shares will, at the relevant Settlement Date, be issued to, and deposited with, the Depositary in accordance with the provisions of the Deposit Agreement and otherwise comply with the Deposit Agreement so that ADSs representing such Ordinary Shares will be issued by the Depositary against receipt of such Ordinary Shares.

(r) No Termination Event. There shall not have occurred any event that would permit Cowen to terminate this Agreement pursuant to Section 11(a).

9. Indemnification and Contribution.

(a) Company Indemnification. The Company agrees to indemnify and hold harmless Cowen, the directors, officers, partners, employees and agents of Cowen and each person, if any, who (i) controls Cowen within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act, or (ii) is controlled by or is under common control with Cowen (a “Cowen Affiliate”) from and against any and all losses, claims, liabilities, expenses and damages (including, but not limited to, any and all reasonable and documented investigative, legal and other expenses incurred in connection with, and any and all amounts paid in settlement (in accordance with Section 9(c)) of, any action, suit or proceeding between any of the indemnified parties and any indemnifying parties or between any indemnified party and any third party, or otherwise, or any claim asserted), within 30 days of the written receipt of the documented expenses by the indemnifying party, to which Cowen, or any such person, may become subject under the Securities Act, the Exchange Act or other federal or state statutory law or regulation, at common law or otherwise, insofar as such losses, claims, liabilities, expenses or damages arise out of or are based, directly or indirectly, on (x) any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or the Prospectus or any amendment or supplement to the Registration Statement or the Prospectus or in any free writing prospectus, or (y) the omission or alleged omission to state in any such document a material fact required to be stated in it or necessary to make the statements in it not misleading; provided, however, that this indemnity agreement shall not apply to the extent that such loss, claim, liability, expense or damage arises from the sale of the Placement Shares pursuant to this Agreement and is caused directly or indirectly by an untrue statement or omission made in reliance upon and in conformity with the Agent’s Information. This indemnity agreement will be in addition to any liability that the Company might otherwise have.

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(b) Cowen Indemnification. Cowen agrees to indemnify and hold harmless the Company and its directors and each officer of the Company that signed the Registration Statement, and each person, if any, who (i) controls the Company within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act or (ii) is controlled by or is under common control with the Company (a “Company Affiliate”) against any and all loss, liability, claim, damage and expense described in the indemnity contained in Section 9(a), as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendments thereto) or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Agent’s Information.

(c) Procedure. Any party that proposes to assert the right to be indemnified under this Section 9 will, promptly after receipt of notice of commencement of any action against such party in respect of which a claim is to be made against an indemnifying party or parties under this Section 9, notify each such indemnifying party of the commencement of such action, enclosing a copy of all papers served, but the omission so to notify such indemnifying party will not relieve the indemnifying party from (i) any liability that it might have to any indemnified party otherwise than under this Section 9 and (ii) any liability that it may have to any indemnified party under the foregoing provision of this Section 9 unless, and only to the extent that, such omission results in the forfeiture of substantive rights or defenses by the indemnifying party. If any such action is brought against any indemnified party and it notifies the indemnifying party of its commencement, the indemnifying party will be entitled to participate in and, to the extent that it elects by delivering written notice to the indemnified party promptly after receiving notice of the commencement of the action from the indemnified party, jointly with any other indemnifying party similarly notified, to assume the defense of the action, with counsel reasonably satisfactory to the indemnified party, and after notice from the indemnifying party to the indemnified party of its election to assume the defense, the indemnifying party will not be liable to the indemnified party for any legal or other expenses except as provided below and except for the reasonable and documented costs of investigation subsequently incurred by the indemnified party in connection with the defense. The indemnified party will have the right to employ its own counsel in any such action, but the reasonable and documented fees, expenses and other charges of such counsel will be at the expense of such indemnified party unless (1) the employment of counsel by the indemnified party has been authorized in writing by the indemnifying party, (2) the indemnified party has reasonably concluded (based on advice of counsel) that there may be legal defenses available to it or other indemnified parties that are different from or in addition to those available to the indemnifying party, (3) a conflict or potential conflict exists (based on advice of counsel to the indemnified party) between the indemnified party and the indemnifying party (in which case the indemnifying party will not have the right to direct the defense of such action on behalf of the indemnified party) or (4) the indemnifying party has not in fact employed counsel to assume the defense of such action within a reasonable time after receiving notice of the commencement of the action, in each of which cases the reasonable and documented fees, disbursements and other charges of counsel will be at the expense of the indemnifying party or parties. It is understood that the indemnifying party or parties shall not, in connection with any proceeding or related proceedings in the same jurisdiction, be liable for the reasonable fees, disbursements and other charges of more than one separate firm admitted to practice in such jurisdiction at any one time for all such indemnified party or parties. All such fees,

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disbursements and other charges will be reimbursed by the indemnifying party within 30 days of the written receipt of the documented expenses by the indemnifying party. An indemnifying party will not, in any event, be liable for any settlement of any action or claim effected without its written consent. No indemnifying party shall, without the prior written consent of each indemnified party, settle or compromise or consent to the entry of any judgment in any pending or threatened claim, action or proceeding relating to the matters contemplated by this Section 9 (whether or not any indemnified party is a party thereto), unless such settlement, compromise or consent includes an unconditional release of each indemnified party from all liability arising or that may arise out of such claim, action or proceeding.

(d) Contribution. In order to provide for just and equitable contribution in circumstances in which the indemnification provided for in the foregoing paragraphs of this Section 9 is applicable in accordance with its terms but for any reason is held to be unavailable from the Company or Cowen, the Company and Cowen will contribute to the total losses, claims, liabilities, expenses and damages (including any investigative, legal and other expenses reasonably incurred in connection with, and any amount paid in settlement of, any action, suit or proceeding or any claim asserted, but after deducting any contribution received by the Company from persons other than Cowen, such as persons who control the Company within the meaning of the Securities Act, officers of the Company who signed the Registration Statement and directors of the Company, who also may be liable for contribution) to which the Company and Cowen may be subject in such proportion as shall be appropriate to reflect the relative benefits received by the Company on the one hand and Cowen on the other. The relative benefits received by the Company on the one hand and Cowen on the other hand shall be deemed to be in the same proportion as the total Net Proceeds from the sale of the Placement Shares (before deducting expenses) received by the Company bear to the total compensation received by Cowen from the sale of Placement Shares on behalf of the Company. If, but only if, the allocation provided by the foregoing sentence is not permitted by applicable law, the allocation of contribution shall be made in such proportion as is appropriate to reflect not only the relative benefits referred to in the foregoing sentence but also the relative fault of the Company, on the one hand, and Cowen, on the other, with respect to the statements or omission that resulted in such loss, claim, liability, expense or damage, or action in respect thereof, as well as any other relevant equitable considerations with respect to such offering. Such relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company or Cowen, the intent of the parties and their relative knowledge, access to information and opportunity to correct or prevent such statement or omission. The Company and Cowen agree that it would not be just and equitable if contributions pursuant to this Section 9(d) were to be determined by pro rata allocation or by any other method of allocation that does not take into account the equitable considerations referred to herein. The amount paid or payable by an indemnified party as a result of the loss, claim, liability, expense, or damage, or action in respect thereof, referred to above in this Section 9(d) shall be deemed to include, for the purpose of this Section 9(d), any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim to the extent consistent with Section 9(c) hereof. Notwithstanding the foregoing provisions of this Section 9(d), Cowen shall not be required to contribute any amount in excess of the commissions received by it under this Agreement and no person found guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of

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the Securities Act) will be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this Section 9(d), any person who controls a party to this Agreement within the meaning of the Securities Act, and any officers, directors, partners, employees or agents of Cowen, will have the same rights to contribution as that party, and each director of the Company and each officer of the Company who signed the Registration Statement will have the same rights to contribution as the Company, subject in each case to the provisions hereof. Any party entitled to contribution, promptly after receipt of notice of commencement of any action against such party in respect of which a claim for contribution may be made under this Section 9(d), will notify any such party or parties from whom contribution may be sought, but the omission to so notify will not relieve that party or parties from whom contribution may be sought from any other obligation it or they may have under this Section 9(d) except to the extent that the failure to so notify such other party materially prejudiced the substantive rights or defenses of the party from whom contribution is sought. Except for a settlement entered into pursuant to the last sentence of Section 9(c) hereof, no party will be liable for contribution with respect to any action or claim settled without its written consent if such consent is required pursuant to Section 9(c) hereof.

10. Representations and Agreements to Survive Delivery. The indemnity and contribution agreements contained in Section 9 of this Agreement and all representations and warranties of the Company herein or in certificates delivered pursuant hereto shall survive, as of their respective dates, regardless of (i) any investigation made by or on behalf of Cowen, any controlling persons, or the Company (or any of their respective officers, directors or controlling persons), (ii) delivery and acceptance of the Placement Shares and payment therefor or (iii) any termination of this Agreement.

11. Termination.

(a) Cowen shall have the right by giving notice as hereinafter specified at any time to terminate this Agreement if (i) any Material Adverse Change, or any development that could reasonably be expected to result in a Material Adverse Change has occurred that, in the reasonable judgment of Cowen, may materially impair the ability of Cowen to sell the Placement Shares hereunder, (ii) the Company shall have failed, refused or been unable to perform any agreement on its part to be performed hereunder; provided, however, in the case of any failure of the Company to deliver (or cause another person to deliver) any certification, opinion, or letter required under Sections 7(m), 7(n), or 7(o), Cowen’s right to terminate shall not arise unless such failure to deliver (or cause to be delivered) continues for more than thirty (30) days from the date such delivery was required; or (iii) any other condition of Cowen’s obligations hereunder is not fulfilled, or (iv), any suspension or limitation of trading in the Placement Shares or in securities generally on Nasdaq shall have occurred. Any such termination shall be without liability of any party to any other party except that the provisions of Section 7(g) (Expenses), Section 9 (Indemnification and Contribution), Section 10 (Representations and Agreements to Survive Delivery), Section 16 (Governing Law Provisions; Currency Provisions) and Section 17 (Waiver of Jury Trial) hereof shall remain in full force and effect notwithstanding such termination. If Cowen elects to terminate this Agreement as provided in this Section 11(a), Cowen shall provide the required notice as specified in Section 12 (Notices).

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(b) The Company shall have the right, by giving ten (10) days’ notice as hereinafter specified to terminate this Agreement in its sole discretion at any time after the date of this Agreement. Any such termination shall be without liability of any party to any other party except that the provisions of Section 7(g), Section 9, Section 10, Section 16 and Section 17 hereof shall remain in full force and effect notwithstanding such termination.

(c) Cowen shall have the right, by giving ten (10) days’ notice as hereinafter specified to terminate this Agreement in its sole discretion at any time after the date of this Agreement. Any such termination shall be without liability of any party to any other party except that the provisions of Section 7(g), Section 9, Section 10, Section 16 and Section 17 hereof shall remain in full force and effect notwithstanding such termination.

(d) Unless earlier terminated pursuant to this Section 11, this Agreement shall automatically terminate upon the issuance and sale of all of the Placement Shares on the terms and subject to the conditions set forth herein; provided that the provisions of Section 7(g), Section 9, Section 10, Section 16 and Section 17 hereof shall remain in full force and effect notwithstanding such termination.

(e) This Agreement shall remain in full force and effect unless terminated pursuant to Sections 11(a), (b), (c), or (d) above or otherwise by mutual agreement of the parties; provided, however, that any such termination by mutual agreement shall in all cases be deemed to provide that Section 7(g), Section 9, Section 10, Section 16 and Section 17 shall remain in full force and effect.

(f) Any termination of this Agreement shall be effective on the date specified in such notice of termination; provided, however, that such termination shall not be effective until the close of business on the date of receipt of such notice by Cowen or the Company, as the case may be. If such termination shall occur prior to the Settlement Date for any sale of Placement Shares, such Placement Shares shall settle in accordance with the provisions of this Agreement.

12. Notices. All notices or other communications required or permitted to be given by any party to any other party pursuant to the terms of this Agreement shall be in writing, unless otherwise specified in this Agreement, and if sent to Cowen, shall be delivered to Cowen at Cowen and Company, LLC, 599 Lexington Avenue, New York, NY 10022, fax no. +1 646-562-1124, Attention: General Counsel with copies to Covington & Burling LLP, 620 Eighth Avenue, New York, NY 10018, Attention: Brian K. Rosenzweig and to Linklaters LLP, 25 rue de Marignan 75008 Paris, France, Attention: Bertrand Sénéchal; or if sent to the Company, shall be delivered to ERYTECH Pharma S.A., Bâtiment Adénine, 60 Avenue Rockefeller 69008 Lyon France, fax no. +33 4 78 75 56 29, Attention: Gil Beyen with copies to Cooley LLP, 500 Boylston Street, Boston, MA 02116-3736, fax no. +1 617-937-2400, Attention: Marc Recht and to Gide Loyrette Nouel A.A.R.P.I., 15 rue de Laborde 75008 Paris, France, Attention: Arnaud Duhamel. Each party to this Agreement may change such address for notices by sending to the parties to this Agreement written notice of a new address for such purpose. Each such notice or other communication shall be deemed given (i) when delivered personally or by verifiable facsimile transmission (with an original to follow) on or before 4:30 p.m., New York City time, on a Business Day (as defined below), or, if such day is not a Business Day on the next succeeding Business Day, (ii) on the next Business Day after timely delivery to a nationally-recognized overnight courier and (iii) on the Business Day actually received if deposited in the U.S. mail (certified or registered mail,

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return receipt requested, postage prepaid). For purposes of this Agreement, “Business Day” shall mean any day on which the Nasdaq and commercial banks in the City of New York are open for business. An electronic communication (“Electronic Notice”) shall be deemed written notice for purposes of this Section 12 if sent to the electronic mail address specified by the receiving party under separate cover and confirmed by such receiving party in writing (including via email or fax). Any party receiving Electronic Notice may request and shall be entitled to receive the notice on paper, in a nonelectronic form (“Nonelectronic Notice”) which shall be sent to the requesting party within ten (10) days of receipt of the written request for Nonelectronic Notice.

13. Successors and Assigns. This Agreement shall inure to the benefit of and be binding upon the Company and Cowen and their respective successors and the affiliates, controlling persons, officers and directors referred to in Section 9 hereof. References to any of the parties contained in this Agreement shall be deemed to include the successors and permitted assigns of such party. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their respective successors and permitted assigns any rights, remedies, obligations or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement. Neither party may assign its rights or obligations under this Agreement without the prior written consent of the other party; provided, however, that Cowen may assign its rights and obligations hereunder to an affiliate of Cowen without obtaining the Company’s consent.

14. Adjustments for Share Splits. The parties acknowledge and agree that all share-related numbers contained in this Agreement shall be adjusted to take into account any share split, share dividend or similar event effected with respect to the Ordinary Shares or ADSs.

15. Entire Agreement; Amendment; Severability. This Agreement (including all schedules and exhibits attached hereto and Placement Notices issued pursuant hereto) constitutes the entire agreement and supersedes all other prior and contemporaneous agreements and undertakings, both written and oral, among the parties hereto with regard to the subject matter hereof. Neither this Agreement nor any term hereof may be amended except pursuant to a written instrument executed by the Company and Cowen. In the event that any one or more of the provisions contained herein, or the application thereof in any circumstance, is held invalid, illegal or unenforceable as written by a court of competent jurisdiction, then such provision shall be given full force and effect to the fullest possible extent that it is valid, legal and enforceable, and the remainder of the terms and provisions herein shall be construed as if such invalid, illegal or unenforceable term or provision was not contained herein, but only to the extent that giving effect to such provision and the remainder of the terms and provisions hereof shall be in accordance with the intent of the parties as reflected in this Agreement.

16. Governing Law Provisions; Currency Provisions. This Agreement shall be governed by and construed in accordance with the internal laws of the State of New York applicable to agreements made and to be performed in such state. Any legal suit, action or proceeding arising out of or based upon this Agreement or the transactions contemplated hereby (“Related Proceedings”) may be instituted in the federal courts of the United States of America located in the Borough of Manhattan in the City of New York or the courts of the State of New York in each case located in the Borough of Manhattan in the City of New York (collectively, the “Specified Courts”), and each party irrevocably submits to the exclusive jurisdiction (except for proceedings instituted in regard to the enforcement of a judgment of any such court (a “Related Judgment”), as to which such jurisdiction is non-exclusive) of such courts in any such

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suit, action or proceeding. Service of any process, summons, notice or document by mail to such party’s address set forth above shall be effective service of process for any suit, action or other proceeding brought in any such court. The parties irrevocably and unconditionally waive any objection to the laying of venue of any suit, action or other proceeding in the Specified Courts and irrevocably and unconditionally waive and agree not to plead or claim in any such court that any such suit, action or other proceeding brought in any such court has been brought in an inconvenient forum. The Company and each other party not located in the United States has irrevocably appointed COGENCY GLOBAL INC., which currently maintains an office at 122 East 42nd Street, 18th Floor, New York, NY 10168, as its agent to receive service of process or other legal summons for purposes of any such suit, action or proceeding that may be instituted in any state or federal court in the Borough of Manhattan in the City of New York, United States of America.

With respect to any Related Proceeding, each party irrevocably waives, to the fullest extent permitted by applicable law, all immunity (whether on the basis of sovereignty or otherwise) from jurisdiction, service of process, attachment (both before and after judgment) and execution to which it might otherwise be entitled in the Specified Courts, and with respect to any Related Judgment, each party waives any such immunity in the Specified Courts or any other court of competent jurisdiction, and will not raise or claim or cause to be pleaded any such immunity at or in respect of any such Related Proceeding or Related Judgment, including, without limitation, any immunity pursuant to the United States Foreign Sovereign Immunities Act of 1976, as amended.

The obligations of the Company pursuant to this Agreement in respect of any sum due to Cowen shall, notwithstanding any judgment in a currency other than United States dollars, not be discharged until the first business day, following receipt by Cowen of any sum adjudged to be so due in such other currency, on which Cowen may in accordance with normal banking procedures purchase United States dollars with such other currency. If the United States dollars so purchased are less than the sum originally due to Cowen in United States dollars hereunder, the Company agrees as a separate obligation and notwithstanding any such judgment, to indemnify Cowen against such loss. If the United States dollars so purchased are greater than the sum originally due to Cowen hereunder, Cowen agrees to pay to the Company an amount equal to the excess of the dollars so purchased over the sum originally due to Cowen hereunder.

All payments made by the Company under this Agreement, if any, will be made without withholding or deduction for or on account of any present or future taxes, duties, assessments or governmental charges of whatever nature (other than taxes on net income) imposed or levied by or on behalf of any taxing authority unless the Company is or becomes required by law to withhold or deduct such taxes, duties, assessments or other governmental charges. In such event, the Company will pay such additional amounts as will result, after such withholding or deduction, in the receipt by Cowen and each person controlling Cowen, as the case may be, of the amounts that would have been receivable in respect thereof if no withholding or deduction had been made; provided however, that no additional amounts shall be payable hereunder to the extent Cowen, in good faith, determines that any withheld or deducted taxes will result in a tax credit or similar tax benefit that substantially offsets the impact of such withholding or deduction (for the avoidance of doubt none of Cowen or its affiliates shall have any obligation pursuant to this Section 16 to share tax returns or tax information with the Company). If any such taxes, duties, assessments or charges are required to be withheld or deducted, the Company will promptly (and in any event within the specified time limit) pay to the relevant tax authority the amount so withheld or deducted and provide Cowen with evidence of such payment.

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17. Waiver of Jury Trial. The Company and Cowen each hereby irrevocably waives any right it may have to a trial by jury in respect of any claim based upon or arising out of this Agreement or any transaction contemplated hereby.

18. Absence of Fiduciary Relationship. The Company acknowledges and agrees that:

(a) Cowen has been retained solely to act as sales agent in connection with the sale of the ADSs and that no fiduciary, advisory or agency relationship between the Company and Cowen has been created in respect of any of the transactions contemplated by this Agreement, irrespective of whether Cowen has advised or is advising the Company on other matters;

(b) the Company is capable of evaluating and understanding and understands and accepts the terms, risks and conditions of the transactions contemplated by this Agreement;

(c) the Company has been advised that Cowen and its affiliates are engaged in a broad range of transactions which may involve interests that differ from those of the Company and that Cowen has no obligation to disclose such interests and transactions to the Company by virtue of any fiduciary, advisory or agency relationship; and

(d) the Company waives, to the fullest extent permitted by law, any claims it may have against Cowen, for breach of fiduciary duty or alleged breach of fiduciary duty and agrees that Cowen shall have no liability (whether direct or indirect) to the Company in respect of such a fiduciary claim or to any person asserting a fiduciary duty claim on behalf of or in right of the Company, including shareholders, partners, employees or creditors of the Company.

19. Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Delivery of an executed Agreement by one party to the other may be made by facsimile transmission or by electronic delivery of a portable document format (PDF) file (including any electronic signature covered by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic Signatures and Records Act or other applicable law, e.g., www.docusign.com).

20. Definitions. As used in this Agreement, the following term has the meaning set forth below:

(a) “Agent’s Information” means, solely the following information in the Prospectus: the third sentence in the ninth paragraph under the caption “Plan of Distribution” in the Prospectus.

[Remainder of Page Intentionally Blank]

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If the foregoing correctly sets forth the understanding between the Company and Cowen, please so indicate in the space provided below for that purpose, whereupon this letter shall constitute a binding agreement between the Company and Cowen.

SCHEDULE 1

FORM OF PLACEMENT NOTICE

Subject: Cowen at the Market Offering—Placement Notice

Gentlemen:

Pursuant to the terms and subject to the conditions contained in the Sales Agreement between ERYTECH Pharma S.A. (the “Company”), and Cowen and Company, LLC (“Cowen”) dated September 21, 2020 (the “Agreement”), I hereby request on behalf of the Company that Cowen sell up to [ ADSs] [$_____ of ADSs] of the Company, [at a minimum price of $_______ per ADS, being specified that each ADSs will be sold at the same price]. Sales should begin on the date of this Notice and shall continue until [DATE] [all ADSs are sold] [the aggregate sales price of the ADSs reached $[ ]].

The number of ordinary shares underlying such ADSs (the “Underlying Ordinary Shares”) issued over a 12-month rolling period represents, once issued together with all the other ordinary shares which have been admitted to trading on the regulated market of Euronext in Paris (“Euronext”) over the same 12-month period, less than 20% of the total number of the Company’s securities already admitted to trading on Euronext on the date the admission to trading of the Underlying Ordinary Shares is requested.

The Placement is only open to investors falling within one of the following categories and the investor will certify prior to the Settlement Date its belonging to one of them by signing an investor letter attached hereto as Exhibit A in accordance with the Sales Agreement:

The Settlement Date for sales of the ADSs shall be [the second (2nd) Trading Day] following the date on which sales of such ADSs are made.

The funds corresponding to a share capital increase shall be transferred to the Company’s account held at [Société Générale Securities Services]/[ ], as transfer agent and registrar of the Company on or before the Settlement Date, details of which are provided below:

Exhibit A to SCHEDULE 1

FORM OF INVESTOR LETTER

ERYTECH PHARMA S.A.

Bâtiment Adénine

60 avenue Rockefeller

69008 Lyon

France

COWEN AND COMPANY, LLC

599 Lexington Avenue

New York, New York 10022

United States of America

[DATE]

Dear Sirs,

In connection with its proposed commitment to subscribe for ordinary shares, nominal value €0.10 per share (the “Ordinary Shares”), of Erytech Pharma S.A., a societé anonyme organized under the laws of France (the “Company”), to be delivered in the form of American Depositary Shares (the “ADSs”), in the context of an issuance by the Company without preferential subscription rights of up to [ ] Ordinary Shares in the form of ADSs reserved to specified categories of investors (the “Placement”), the undersigned (the “Investor”) hereby represents and warrants that, as at the date hereof and until the completion of the Placement, it belongs and will belong, or is acting on behalf of or advising an investor who belongs and will belong, to one of the following categories:

provided that, if the Investor is acting on behalf of investment funds or other legal entities managed or advised by it, such representation shall also apply to each such funds or legal entities and the Investor shall further ensure compliance thereof by each such funds or entities in connection with the initial distribution of the ADSs.

Sincerely yours,

On behalf of                                                  

SCHEDULE 2

Company

Gil Beyen, Chief Executive Officer (gil.beyen@erytech.com)

Cowen

Michael Murphy, Managing Director (Michael.Murphy@cowen.com)

William Follis, Managing Director (William.follis@cowen.com)

SCHEDULE 3

Compensation

Cowen shall be paid compensation equal to 3.0% of the gross proceeds from the sales of ADSs pursuant to the terms of this Agreement.

Exhibit 7(m)

FORM OF OFFICER CERTIFICATE

The undersigned, the duly qualified and elected _______________________, of ERYTECH Pharma S.A. (“Company”), a société anonyme organized under the laws of France and registered with the Register of Commerce and Companies (Registre du Commerce et des Sociétés) of Lyon under number 479 560 013, does hereby certify in such capacity and on behalf of the Company, pursuant to Section 7(m) of the Sales Agreement dated September 21, 2020 (the “Sales Agreement”) between the Company and Cowen and Company, LLC, that to the best of the knowledge of the undersigned.

(i) The representations and warranties of the Company in Section 6 of the Sales Agreement (A) to the extent such representations and warranties are subject to qualifications and exceptions contained therein relating to materiality or Material Adverse Change, are true and correct on and as of the date hereof with the same force and effect as if expressly made on and as of the date hereof, except for those representations and warranties that speak solely as of a specific date and which were true and correct as of such date, and (B) to the extent such representations and warranties are not subject to any qualifications or exceptions, are true and correct in all material respects as of the date hereof as if made on and as of the date hereof with the same force and effect as if expressly made on and as of the date hereof except for those representations and warranties that speak solely as of a specific date and which were true and correct as of such date; and

(ii) The Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied pursuant to the Sales Agreement at or prior to the date hereof.

Date:                                     

Exhibit 4.1

Page 1 of 15

SECTION I

FORM - NAME - CORPORATE PURPOSE

HEAD OFFICE - DURATION

The Company was established in the form of a French simplified limited company, by way of a private deed in Lyon on October 26, 2004.

The company was transformed into a corporation by decision of the Extraordinary General Meeting of September 29, 2005.

It exists and is shared between the owners of shares created after this date and all future shareholders, and is governed by laws and regulations in force, as well as by the present articles of incorporation.

The Company’s name is:

ERYTECH PHARMA

In all deeds and documents created by the Company and intended for third parties, its name shall be immediately preceded or followed by the words “Société Anonyme” or the abbreviation “SA” and a declaration of its capital stock, head office, and registration number in the trade and companies register.

The Company has the purpose, in France and in any country, of:

and generally, all financial, commercial, industrial, civil, property, or security-related transactions, such as may directly or indirectly relate to one of the purposes specified or such as may facilitate their fulfillment.

The Company may act directly or indirectly and perform all these operations in any country, on its own behalf and on behalf of third parties, either alone or with third parties in a joint venture, association, grouping, or company, through the creation of new companies, contributions, partnerships, subscription, purchase of company securities or rights, merger, alliance, joint venture companies, or the obtaining or provision, under lease or management, of any assets and rights or other items.

The Company’s head office is located at: 60, avenue Rockefeller (69008) LYON.

It may be transferred to any location within the same French département or to a neighboring département by way of a simple decision of the Board of Directors, subject to the ratification this decision by the next ordinary general meeting, and to any other location by virtue of a decision by an extraordinary general meeting, subject to legal provisions in force.

In the event of a transfer decided on by the Board of Directors in conformity with the law, the Board is authorized to modify the articles of incorporation accordingly.

The Company’s duration is set at 99 years from the date of its registration in the Trade and Companies Register, save in the event of extension or early dissolution.

The financial year begins on January 1 and ends on December 31.

Page 2 of 15

SECTION II

CAPITAL - SHARES

All the original shares constituting the initial capital represent cash contributions and have been fully paid up, as showing on the certificate issued by the Banque Populaire Loire et Lyonnais – Agence Lyon Monplaisir, custodian of the funds.

The total amount paid by the shareholders, i.e., thirty-nine thousand, two hundred and sixteen (39,216) Euros, has been deposited into an account in the Company’s name at this bank.

In accordance with a resolution by the Combined General Meeting of December 31, 2004, the capital stock was increased to 41,770 Euros through the creation and issue of 2,554 new shares paid up in cash, for a nominal amount of 1 Euro each, fully paid up upon subscription.

In accordance with a resolution by the Extraordinary General Meeting of September 29, 2005, the capital stock was increased to 51,020 Euros through the creation and issue (i) of 6,266 new shares pursuant to share subscription warrants with a nominal value of 1 Euro each, which was fully paid up upon subscription, and (ii) 2,984 new shares paid up in cash, for a nominal value of 1 Euro each, fully paid up upon subscription.

In accordance with an Executive Board decision of October 3, 2006, the Company’s capital stock was increased by 13,127 Euros through the issue of 13,127 class “P” shares with a nominal value of 1 Euro, fully paid up upon subscription.

In accordance with an Executive Board decision of December 21, 2006, the Company’s capital stock was increased by 17,353 Euros through the issue of 17,353 class “O” shares with a nominal value of 1 Euro, fully paid up upon subscription.

In accordance with a resolution by the Combined General Meeting of December 22, 2006, the Company’s capital stock was increased by 54,333 Euros, through the issue of 54,333 class “A” shares with a nominal value of 1 Euro, fully paid up upon subscription.

In accordance with an Executive Board decision of January 23, 2008, the Company’s capital stock was increased by an amount of 54,333 Euros, through the creation of 54,333 new class A shares with a nominal value of 1 Euro, fully paid up upon subscription.

In accordance with an Executive Board decision of January 15, 2009, the Company’s capital stock was increased by an amount of 54,333 Euros, through the creation of 54,333 new class A shares with a nominal value of 1 Euro, fully paid up upon subscription.

In accordance with an Executive Board decision of July 16, 2010, the Company’s capital stock was increased by an amount of 63,283 Euros, through the creation of 63,283 new class A shares with a nominal value of 1 Euro, fully paid up upon subscription.

In accordance with an Executive Board decision of July 29, 2010, the Company’s capital stock was increased by an amount of 7,573 Euros, through the creation of 7,573 new class A shares with a nominal value of 1 Euro, fully paid up upon subscription.

In accordance with a resolution by the Combined General Meeting of April 2, 2013, all the share classes were canceled and the existing preferential shares were all converted into common shares. As such, the Company’s shares are all common shares.

In this same meeting, the nominal value of the Company’s shares was divided by 10.

In accordance with Executive Board decisions of April 30, 2013 recognizing the listing of the Company’s shares on the market NYSE Euronext Paris, the convertible bonds issued by the Company were converted into new shares. The Company’s capital stock was increased by an amount of 86,206.80 Euros, from 315,355 Euros to 401,561.80 Euros through the issue of 862,068 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of April 2, 2013 granting delegations of power to the Executive Board, and in accordance with Executive Board decisions of April 4, 2013, April 12, 2013, and April 30, 2013 making use of these delegations, the capital stock was increased by an amount of 152,433.40 Euros, from 401,561.80 Euros to 553,995.20 Euros, through the issue of 1,524,334 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of May 21, 2012 granting delegations of power to the Executive Board/Board of Directors, and in accordance with Board of Directors’ decisions of July 18, 2013 making use of these delegations, the capital stock was increased by an amount of 816 Euros, from 553,995.20 Euros to 554,811.20 Euros, through the issue of 8,160 shares with a nominal value of 0.10 Euro.

Page 3 of 15

In accordance with resolutions of the Combined General Meeting of May 21, 2012 granting delegations of power to the Executive Board/Board of Directors, and in accordance with Board of Directors’ decisions of December 3, 2013 making use of these delegations, the capital stock was increased by an amount of 1,084 Euros, from 554,811.20 Euros to 555,895.20 Euros, through the issue of 10,840 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of May 21, 2012 granting delegations of power to the Executive Board/Board of Directors, and in accordance with Board of Directors’ decisions of May 5, 2014 making use of these delegations, the capital stock was increased by an amount of 762 Euros, from 555,895.20 Euros to 556,657.20 Euros, through the issue of 7,620 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Extraordinary General Meeting of May 21, 2012 and the Combined General Meeting of June 17, 2014 granting delegations of power to the Executive Board/Board of Directors, and in accordance with the Board of Directors’ decisions of December 4, 2014 making use of these delegations, the capital stock was increased by an amount of 131,618.90 Euros, from 556,657.20 Euros to 688,276.10 Euros, through the issue of 1,316,189 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Extraordinary General Meeting of May 21, 2012 granting delegations of power to the Executive Board/Board of Directors, and in accordance with the Board of Directors’ decisions of June 23^rd, 2015 making use of these delegations, the capital stock was increased by an amount of 653.00 Euros, from 688,276.10 Euros to 688,929.10 Euros, through the issue of 6,530 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of May 21, 2012 and the Extraordinary General Meeting of April 2^nd, 2013 granting delegations of power to the Executive Board/Board of Directors, and in accordance with the Board of Directors’ decisions of December 2^nd, 2015 making use of these delegations, the capital stock was increased by an amount of 1,375 Euros, from 688,929,10 Euros to 690,304.10 Euros, through the issue of 13,750 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of May 21, 2012 and the Extraordinary General Meeting of April 2nd, 2013 granting delegations of power to the Executive Board/Board of Directors, and in accordance with the Board of Directors’ decisions of December 2^nd, 2015 making use of these delegations, the capital stock was increased by an amount of 649 Euros, from 690,304.10 Euros to 690,953.10 Euros, through the issue of 6,490 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of June 23, 2015 granting delegations of power to the Board of Directors and in accordance with the Board of Directors’ decisions of December 2^nd, 2015 and with the Chief Executive Officer’s decisions of December 3^rd, 2015 making use of these delegations, the capital stock was increased by an amount of 94,000 Euros, from 690,953.10 Euros to 784,953.10 Euros, through the issue of 940,000 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of May 21, 2012 granting delegations of power to the Executive Board/Board of Directors and in accordance with the Board of Directors’ decisions of January 10, 2016 making use of these delegations, the capital stock was increased by an amount of 7,508 Euros, from 784,953.10 Euros to 792,461.10 Euros, through the issue of 75,080 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of May 21, 2012 and the General Meeting of April 2nd, 2013 granting delegations of power to the Executive Board/Board of Directors and in accordance with the Board of Directors’ decisions of December 6, 2016 making use of these delegations, the capital stock was increased by an amount of 1,416 Euros, from 792,461.10 Euros to 793,877.10 Euros, through the issue of 14,160 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of June 24, 2016 granting delegations of power to the Executive Board/Board of Directors and in accordance with the Board of Directors’ decisions of January 8, 2017 making use of these delegations, the capital stock was increased by an amount of 79,387.70 Euros, from 793,877.10 Euros to 873,264.80 Euros, through the issue of 793,877 shares with a nominal value of 0.10 Euro.

Page 4 of 15

In accordance with resolutions of the Combined General Meeting of May 21, 2012 and the General Meeting of April 2^nd, 2013 granting delegations of power to the Executive Board/Board of Directors and in accordance with the Board of Directors’ decisions of April 12, 2017 making use of these delegations, the capital stock was increased by an amount of 800 Euros, from 873,264.80 Euros to 874,064.80 Euros, through the issue of 8,000 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of June 24, 2016 granting delegations of power to the Executive Board/Board of Directors and in accordance with the Chief Executive Officer’s decision of April 19, 2017 making use of these delegations, the capital stock was increased by an amount of 300,000 Euros, from 874,064.80 Euros to 1,174,064.80 Euros, through the issue of 3,000,000 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Extraordinary General Meeting of April 2, 2013 granting delegations of power to the Executive Board/Board of Directors, and in accordance with the decision of the Board of Directors of November 6, 2017 making use of these delegations, the capital stock was increased by an amount of 500 Euros, from 1,174,064.80 Euros to 1,174,564.80 Euros through the issue of 5,000 shares with a nominal value of 0.10 Euro.

In accordance with the resolutions of the Combined General Meeting of April 2, 2013 and June 24, 2016 granting delegations of authority to the Board of Directors, and pursuant to the decision of the Board of Directors on November 6, 2017 making use of these delegations, the capital stock was increased by an amount of 877.4 Euros from 1,174,564.80 Euros to 1,175,442.20 Euros, through the issue of 8,774 shares with a nominal value of 0.10 Euros.

In accordance with resolutions of the Combined General Meeting of June 27, 2017 granting delegations of power to the Board of Directors and in accordance with the Chief Executive Officer’s decision of November 14, 2017 making use of these delegations, the capital stock was increased by an amount of 537,403.30 Euros, from 1,175,442.20 Euros to 1,712,845,50 Euros, through the issue of 5,374,033 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Combined General Meeting of June 27, 2017 granting delegations of power to the Board of Directors and in accordance with the Board of Directors’ decision of November 27, 2017 making use of these delegations, the capital stock was increased by an amount of 80,610.40 Euros, from 1,712,845,50 Euros to 1,793,455,90 Euros, through the issue of 806,104 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Extraordinary General Meeting of April 2, 2013 granting delegations of power to the Executive Board/Board of Directors, and in accordance with the decision of the Board of Directors of January 7, 2018 making use of these delegations the capital stock was increased by an amount of 300 Euros, from 1,793,455.90 Euros to 1,793,755.90 Euros, through the issue of 3,000 shares with a nominal value of 0.10 Euro.

In accordance with resolutions of the Extraordinary General Meeting of June 24, 2016 granting delegations of power to the Executive Board/Board of Directors and in accordance with the decision of the Board of Directors of March 9, 2018 making use of these delegations the capital stock was increased by an amount of 247,60 Euros, from 1,793,755.90 Euros to 1,794,003.50 Euros, through the issue of 2,476 shares with a nominal value of 0.10 Euro.

The capital stock is set at an amount of one million, eight hundred and thirty thousand, one hundred sixty-two Euros and ten Euro cents (€1,830,162.10).

It is divided into eighteen million, three hundred one thousand six hundred twenty-one (18,301,621) shares with a nominal value of ten Eurocents (0.10) each, all in the same category and fully paid up.

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The Company remains informed on the composition of its shareholding structure in accordance with the conditions established by law. To this end, it may make use of established legal provisions on the identification of bearers of securities such as grant an immediate or future voting right in general shareholders’ meetings.

All shareholders who come to hold or cease to hold, directly or indirectly, alone or jointly with another person, a number of shares or similar securities representing a portion of the capital or voting rights established by law must inform the Company of this, in accordance with the conditions established by the law and regulations.

Shareholders who have not respected these provisions shall be deprived of the voting rights attached to the shares exceeding the portion that should have been declared. The loss of voting rights shall apply to all shareholders’ meetings held up to the expiry of a two-year period following the date on which the declaration was normalized.

The share capital shall be increased by any means and according to any methods established by law. An extraordinary general meeting, acting on a report by the Board of Directors, is the sole entity with competency to decide on a capital increase. It may delegate such competency or powers to the Board of Directors.

The shareholders have, proportionately to the amount of their shares, a preferential right to the subscription of shares issued by way of a cash contribution to perform a capital increase, a right that they may waive individually. An extraordinary general meeting may decide to withdraw this preferential subscription right under legally established conditions.

The right to the assignment of new shares to shareholders, following an incorporation of reserves, income, or issue premiums into the capital, belongs to the bare owner, without prejudice to the rights of the usufructuary.

All the original shares constituting the initial capital and representing cash contributions must be paid up in the amount of at least half their nominal value at the time of their subscription.

Shares subscribed during a cash-based capital increase must be paid up in the amount of at least one quarter of their nominal value at the time of their subscription and, where applicable, the entirety of the issue premium.

Payment of the remainder must take place on one or more occasions on the decision of the Board of Directors within a period of five years, i.e., this period starting on the day of registration in the Trade and Companies Register or, for a capital increase, on the day on which the capital increase became final. Calls for funds shall be brought to the knowledge of subscribers by registered letter with confirmation of receipt sent at least fifteen days prior to the date established for each payment. Payments shall be made either at the head office or at any other location indicated to this end.

Any delays in the payment of sums owing on the share amount not paid up shall result, duly and without the need to proceed with any formalities whatsoever, in the payment of interest at the legal rate, starting on the due date, without prejudice to any personal action that the Company may exercise against the defaulting shareholder and the enforcement measures established by law.

A reduction of the capital may be authorized or decided on in an extraordinary general meeting, which may delegate to the Board of Directors all powers to perform such reduction. In no case shall this harm the equal treatment of the shareholders.

A reduction in share capital for an amount below the legal minimum can only be decided pursuant to the suspensive condition of a capital increase intended to return the share capital to an amount at least equal to this minimum amount, except where the Company is transformed into another form of company.

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In the event of non-compliance with these provisions, any interested parties may seek dissolution of the Company through the courts.

Nevertheless, the court cannot order its dissolution where, on the date on which it rules based on grounds, the situation has been normalized.

The capital may be liquidated in conformity with legal provisions. Liquidation of the capital may be decided in an extraordinary general meeting and must be performed using sums distributable in accordance with Article L. 232-11 of the Code of Commerce, by way of an equal reimbursement on each share of the same class. It shall not result in a reduction of the capital. Shares fully or partially liquidated shall lose the right to reimbursement at their nominal value, up to the amount of this liquidation. They shall retain all their other rights.

The shares are nominal, up to their full payment. When they are fully paid up, they may be nominal or bearer, as decided by the shareholders.

They shall give rise to the registration of an account opened pursuant to the conditions and methods established under current legal and regulatory provisions, by the issuing company or by a financial broker mentioned on paragraphs 2° to 7° of Article L.542-1 of the Code Monétaire et Financier.

Shares are indivisible in the eyes of the company. Indivisible co-owners of shares shall be represented in general meetings by one of the co-owners or by a joint representative of their choice. In default of an agreement between them on the choice of a representative, this representative shall be designated by order of the president of the commercial court, ruling in an interim order on the application of the co-owner first making such request.

The voting right attached to a share belongs to the usufructuary for ordinary general meetings and to the bare owner for extraordinary general meetings. However, the shareholders may agree amongst themselves on any other distribution for the exercise of a voting right in general meetings. In this case, they must bring their agreement to the knowledge of the Company by registered letter sent to the head office, the Company being required to respect this agreement for any general meetings held after the expiry of a one-month period following mailing of the registered letter, the postmark being considered proof of the mailing date.

The shareholder’s right to obtain the communication of company documents or to consult these documents may likewise be exercised by each co-owner of an undivided share, by the usufructuary, and the bare owner of shares.

Shares can be freely traded, without prejudice to legal and regulatory provisions.

The ownership of shares issued in registered form shall result from their registration in the name of the owners on the registers held to this end. Shares that are designated as registered shares may only be traded on the market where they have first been placed in a management account with an authorized broker.

Shares that are not registered as necessarily being nominal may only be traded on the market where they are converted to bearer shares.

Ownership of bearer shares shall result from their registration in a bearer account with an authorized financial broker.

The assignment of nominal or bearer shares shall take place, with regard to third parties and the company, by an account-to-account transfer into the accounts of the issuing company or those of the authorized financial broker.

The transfer of shares, free or charge or following a death, shall likewise take place by an account-to-account transfer upon the provision of evidence supporting the change in legal conditions.

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Each share gives right to the profits, the company assets in a share proportional to the proportion of capital that it represents.

Except where the law or the articles of incorporation stipulate otherwise, each share confers on its owner a vote in the shareholders’ General Meetings.

All shareholders shall have the right to be informed of the Company’s performance and to obtain the communication of certain company documents at the times and in accordance with the conditions established by the law and regulations.

Shareholders shall only sustain losses up to the amount of their contributions.

The possession of a share requires due adherence to the decisions of general meetings and the present articles of incorporation. Assignment shall include all dividends matured and not paid or maturing in future, as well as any share in the reserve funds, save where provisions to the contrary are disclosed to the Company.

Whenever it is necessary to hold a certain number of shares to exercise a right, in the event of an exchange, regrouping, or assignment of title, or at the time of a capital increase or reduction, a merger, or any other operation, the shareholders holding a number of shares less than that required can only exercise these rights on the condition that they personally arrange to obtain the number of shares required.

SECTION III

ADMINISTRATION AND CONTROL OF THE COMPANY

I. Appointment/removal of directors

The Company is governed by a Board of Directors composed of at least three members and at most eighteen members, without prejudice to the derogation established by law in the event of merger. The Board of Directors is composed by seeking a balanced representation of women and men.

During the life of the Company, directors shall be appointed, renewed, or removed in ordinary general meetings. They may always be re-elected.

The duration of a director position is three (3) years; this position ends at the end of the Ordinary General Meeting called to rule on the annual financial statements for the year just ended and held during the year in which their term of office expires.

A person cannot be appointed as director where, having surpassed seventy-five years of age, this person’s appointment has the effect of bringing the number of Board members having surpassed this age to more than one-third of the number of directors. Where this limit has been exceeded, the oldest director shall be deemed as having duly resigned. A Director placed under administration shall also be deemed as having duly resigned.

Directors can be shareholders or non-shareholders of the Company.

A Company employee cannot be appointed director where his/her employment contract corresponds to an effective job. The number of directors tied to the Company by way of an employment contract cannot exceed one third of the directors in office.

II. Directors as legal persons

Directors may be natural persons or legal persons. In the latter case, upon its appointment, the legal person is required to designate a permanent representative, who is subject to the same conditions and obligations and who incurs the same civil and criminal liability as if this person was a director in his/her own name, without prejudice to the joint and several liability of the legal person that he/she represents. The permanent representative of a director as a legal entity is subject to the age conditions pertaining to directors as natural persons.

The term of office of the permanent representative designated by the legal person appointed as director is given to him/her for the duration of the latter’s term of office.

Where the legal person revokes the term of office of its permanent representative, the legal person is required to provide the Company, without delay and by registered letter, this revocation as well as the identify of its new permanent representative. The same is applicable in the event of the death or resignation of the permanent representative.

Designation of the permanent representative and discontinuation of his/her term of office are subject to the same publication formalities applicable as if he/she had been a director in his/her own name.

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III. Vacancy, death, resignation

In the event of a vacancy, due to death or resignation, of one or more director positions, the Board of Directors may, between two general meetings, proceed with temporary appointments.

Where the number of directors has become lower than the legal minimum, the remaining directors shall immediately call an Ordinary General Meeting with a view to supplementing the Board’s numbers.

Temporary appointments made by the Board are subject to ratification at the next ordinary general meeting. In default of such ratification, the resolutions made and acts performed by the Board prior to this meeting shall no longer be considered valid.

In the event of absence of a director at more than four consecutive Board of Directors’ meetings, this director shall be considered as having duly resigned.

The Board of Directors shall elect a chairman from among its members, the chairman being a natural person, on penalty of invalidity of this appointment. It shall determine the chairman’s remuneration.

Any person older than seventy-five years of age may not be appointed chairman. Where the chairman in office comes to surpass this age, he/she shall be deemed as having duly resigned. The Chairman placed under administration shall also be deemed as having duly resigned.

The chairman is appointed for a duration that cannot exceed that of his/her director mandate. He/she may be re-elected. The Board of Directors may remove the chairman at any time.

The Board may likewise appoint a Vice President from among its members who are natural persons, and he/she shall preside over Board meetings in the Chairman’s absence.

The Board may designate, within a maximum limit of two, one or more observers who are natural persons, directors or otherwise, and who are 65 years of age at most at the day of their appointment. These observers are appointed for a duration of two years.

These observer positions shall be fulfilled free of charge. The observers shall be summoned to all meetings of the Board of Directors, and shall take part in deliberations for consultation purposes only. In its relations with the Board of Directors, the observers shall perform a general mission of consultation and supervision.

The Board of Directors shall meet as often as the Company’s interests so require, upon summons by its chairman or the managing director. Where the Board has not met for more than two months, at least one third of the directors may request that the chairman, who is bound by this request, call a Board of Directors’ meeting on a specific agenda.

Summonses shall be given by any means, including verbally.

Meetings shall take place either at the headquarters or at any other location indicated in the summons.

The Board may only validly deliberate where half of its directors are present.

Decisions shall be made by the majority of members present or represented.

In the event of a tie, the meeting Chairman’s vote shall carry the decision.

Pursuant to the provisions of internal rules established by the Board of Directors, for calculation of the quorum and the majority, the directors participating in a Board meeting by videoconference or other means of telecommunications allowing for identification of the participants and guaranteeing their effective participation shall be deemed present, in compliance with current regulations.

This provision is not applicable for decisions on the annual financial statements, the consolidated financial statements, and preparation of the annual report and the group’s annual report.

The Board of Directors can also make decisions by written consultation of the Directors in accordance with the conditions established by law.

The Board of Directors determines the orientations of the Company’s activities and oversees their implementation, in accordance with its corporate interest and taking into consideration social and environmental issues of its activity. Without prejudice to the powers expressly assigned by law to the shareholders and within the limit of the corporate purpose, the Board of Directors is responsible for all matters relating to the successful operation of the Company and governs matters concerning the Company, through its resolutions.

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In relations with third parties, the Company is committed by the actions of the Board of Directors including where not pertaining to the corporate object, except where it can prove that the third party knew that such action fell outside this purpose or that it could not be ignorant of such fact, given the circumstances, mere publication of the articles of incorporation not being sufficient to constitute such proof.

The Board of Directors shall perform the controls and verifications that it deems appropriate. Each director may arrange for the communication to him/her of all documents and information necessary to the fulfillment of his/her mission.

The Board of Directors may decide on the creation of a study committee responsible for studying matters that the Board of Directors or its Chairman submits to it.

1 - Operating methods

General management is provided under its responsibility, by a natural person appointed by the Board of Directors and holding the title of managing director. This natural person may be the chairman of the Board of Directors.

The Board of Directors chooses between two operating methods for the Senior Management.

The Board resolution relative to the choice of operating method for the executive division shall be carried by the majority of directors present or represented. Shareholders and third parties shall be informed of this choice in accordance with the conditions established under current regulations.

2 - Senior Management

The Chief Executive Officer shall be a natural person selected from among the directors or elsewhere. The duration of the managing director’s term of office is determined by the Board at the time of his/her appointment. However, where the managing director is a director, the duration of his/her term of office cannot exceed that of the director mandate.

Any person older than seventy years of age cannot be appointed as managing director. Where the managing director reaches this age limit, he/she shall be deemed as having duly resigned. A managing Director placed under administration shall also be deemed as having duly resigned.

The managing director may be removed by the Board of Directors at any time. Where the removal is decided without just cause, it may result in the payment of damages, save where the managing director holds the position of chairman of the Board of Directors.

The managing director is vested with the broadest of powers to act in all circumstances in the name of the Company. He shall exercise his powers within the limits of the corporate object and without prejudice to the powers that the law expressly assigns to the shareholders and to the Board of Directors.

He represents the Company in its relations with third parties. The Company is committed by the actions of the managing director including where not pertaining to the corporate object, save where it can prove that the third party knew that such action fell outside this object or that it could not be ignorant of such fact, given the circumstances, mere publication of the articles of incorporation not being sufficient to constitute such proof.

The Board of Directors may limit the powers of the Chief Executive Officer, but these limitations are not binding against third parties.

3 - Deputy Managing Director

Upon the proposal of the Chief Executive Officer that this position be assumed by the Chairman of the Board of Directors or by another person, the Board of Directors may appoint one or more natural persons assigned to assist the Chief Executive Officer, with the title of Deputy Managing Director.

The Board of Directors may choose the Deputy Managing Directors from among the directors or elsewhere and cannot appoint more than five (5) persons.

The age limit is set at seventy (70) years of age. Where a deputy managing director reaches this age limit, he/she shall be deemed as having duly resigned. A deputy managing director placed under administration is also be deemed as having duly resigned.

The deputy managing directors may be removed at any time by the Board of Directors, upon such proposal by the managing director. Where such removal is decided on without just cause, it may result in the payment of damages.

Where the Chief Executive Officer ceases or is unable to perform his/her duties, the Deputy Managing Directors shall retain, except where decided otherwise by the Board, their duties and powers until the appointment of a new Chief Executive Officer.

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In accordance with the managing director, the Board of Directors shall determine the extent and duration of powers granted to the deputy managing directors. The deputy managing directors shall have, in relation to third parties, the same powers as the managing director.

1 - A general meeting may allocate to the directors, in remuneration for their activity a fixed annual sum, the amount of which shall be reported under operating expenses and shall be maintained until a decision is made to the contrary. Its distribution among the directors shall be determined by the Board of Directors.

2 - The Board of Directors shall determine the remuneration for the chairman of the Board of Directors, the managing director, and the deputy managing directors. This remuneration may be fixed and/or proportional.

The limitation on the plurality of terms of office as director and Chief Executive Officer applies in accordance with the conditions and subject to the derogations established by law.

All regulated agreements taking place, directly or through a third party, between the Company and one of its directors, its managing director, one of its deputy managing directors, one of its shareholders holding a portion of the voting rights greater than 10% or, where relating to a shareholder company, the company controlling it as defined under Article L. 233-3 of the Code of Commerce, must be submitted for the prior authorization of the Board of Directors.

The same is likewise applicable for agreements in which one of the persons outlined in the previous paragraph has an indirect interest, and for agreements taking place between the Company and another company, where the managing director, one of the deputy managing directors, or one of the Company’s directors is the owner, shareholder with unlimited liability, manager, director, member of the supervisory board, or generally any director of this company.

The prior authorization of the Board of Directors shall be supported by reasons justifying the Company’s interests in stipulating the agreement, and shall notably specify the financial conditions associated with this agreement.

Agreements stipulated and authorized during previous financial years, the fulfillment of which was continued into the last financial year, shall be examined each year by the Board of Directors and disclosed to the external auditors as established under the law.

The provisions of the preceding paragraphs shall not be applicable either to agreements relating to day-to-day operations stipulated under normal conditions or to agreements stipulated between two companies where one of these companies directly or indirectly holds the entirety of the other’s capital, where applicable after deducting the minimum number of shares required to satisfy the requirements of Article 1832 of the Civil Code and Articles L. 225-1 and L. 226-1 of the Code of Commerce.

The report outlined under the last paragraph of Article L. 225-37 of the Code of Commerce mentions, save where these are agreements relating to day-to-day operations stipulated under normal conditions, agreements reached directly or through a third party and between, on one part one of the corporate officers or one of the shareholders holding a portion of voting rights greater than 10% of the Company’s capital and, on the other part, another company controlled by the first one under article L.233-3.

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One or more statutory auditors shall be appointed in accordance with article L.823-1 of the Commercial code and shall perform their audit assignment in conformity with the law. Their permanent assignment, to the exclusion of any involvement in the Company’s management, is to review the Company’s books and financial figures and to verify the accuracy and fairness of the corporate financial statements.

SECTION IV

SHAREHOLDERS’ MEETINGS

Shareholder decisions shall be made in General Meetings.

Ordinary General Meetings are those that are called to make all decisions that do not modify the articles of incorporation.

Extraordinary General Meetings are those called to decide on or authorize direct or indirect modifications to the articles of incorporation.

The resolutions of General Meetings create an obligation on all shareholders, including those who are absent, dissenting, or incompetent.

All shareholders have the right to participate in General Meetings or to arrange for their representation in accordance with the conditions established by law.

General Meetings are called either by the Board of Directors or by the statutory auditors, or by a representative designated by the President of the Commercial Court in an interim ruling on the application of one or more shareholders constituting at least 5% of the capital or, in an emergency, on the application of the participative Management Committee.

Where the Company’s shares are admitted for trading on a regulated market or where all its shares are not nominal, it is required, at least thirty-five (35) days prior to any meeting, to publish in the French Bulletin des Annonces Légales Obligatoires (BALO) a meeting notice containing the information outlined in current regulations.

The summons to a General Meeting is made by a notice in a newspaper authorized to publish legal notices in the French département where the headquarters is located, and a notice, furthermore, in the Bulletin des Annonces Légales et Obligatoires (BALO).

Nevertheless, the notices outlined in the previous paragraph may be replaced by a summons made, at the Company’s expense, by simple or registered letter sent to each shareholder. This summons may likewise be sent by a means of electronic telecommunications implemented in accordance with regulatory conditions.

Meetings shall take place at the headquarters or at any other location indicated in the notice of summons.

General Meetings shall be composed of all the shareholders, whatever the number of shares they hold. Participation in the General Meetings, in any form whatsoever, is subject to the registration or recording of shares in accordance with the conditions and timelines established under current regulations.

A shareholder may arrange for his/her representation at general meetings by any natural or legal person of his/her choice, in conformity with legal provisions. Shareholders who are legal persons shall participate in meetings through their legal representatives or through any representative designated to this end.

Shareholders may likewise vote remotely in accordance with the methods established by the law and regulations, sending their remote voting form either in paper format or, on the decision of the Board of Directors, by a means of telecommunications.

The Board of Directors has the right to decide, at the time a meeting is called, whether the shareholders may participate and vote in any meetings by video conference or any other means of telecommunications or electronic transmission (including via the internet), in accordance with the conditions established by the law and regulations applicable at the time of its utilization. This decision shall be communicated in the meeting notice and the notice of summons published in the Bulletin des annonces légales obligatoires (BALO).

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Shareholders who use, to this end and within the required time lines, the electronic voting form offered on the web site arranged by the coordinator of the shareholders’ meeting shall be considered equivalent to the shareholders present or represented. The submission and signature of the electronic form may be directly performed on this site through any process approved by the Board of Directors and meeting the conditions defined under the paragraph two, sentence one, Article 1316-4 of the French Civil Code, i.e., the usage of a reliable identification process guaranteeing a link with the form, notably such as consists of an identifier and a password.

The proxy or vote, thus expressed prior to the shareholders’ meeting by any means of telecommunications or electronic transmission, and the confirmation of receipt given therefor, shall be considered a submission irrevocable and binding on all parties, it being specified that, in the event of an assignment of shares taking place prior to the second (2nd) business day preceding the shareholders’ meeting, local Paris time, the Company shall consequently invalidate or modify, as applicable, the proxy or vote expressed prior to the meeting by any means of telecommunications.

The agenda for Meetings is provided by the person issuing the summons.

One or more shareholders, representing at least the portion of share capital required and acting in accordance with the conditions and timeframes established by law, have the right to request, by registered letter with acknowledgment of receipt or by electronic telecommunications, the inclusion of points or draft resolutions on a Meeting agenda.

The participative management committee may likewise request that draft resolutions be included on a Meeting agenda.

Shareholders’ meetings cannot deliberate on a matter that is not included on the agenda, which cannot be modified in the event of a second summons. Such meetings may nevertheless, in all circumstances, remove one or more members of the Board of Directors and proceed with their replacement.

Meetings shall be presided over by the chairman of the Board of Directors or, in his absence, by a deputy chairman or by a director specially deputy to this end by the Board. Failing this, the shareholders’ meeting shall itself designate a meeting chairman.

In the event of a summons by a statutory auditor or by an agent appointed by the court, the Meeting shall be presided over by the person issuing the summons.

The two shareholders, present and accepting such duties, representing, both for themselves and as representatives, the largest number of votes shall act as scrutineers and vote counters.

The committee thus established shall designate a secretary, who may be taken from outside the members of the Meeting.

An attendance sheet shall be kept, in accordance with the conditions established by law.

Deliberations and resolutions of the General Meetings are recorded in minutes signed by the committee members and kept in a special register, in accordance with the law. Copies and extracts of these minutes shall be validly certified in accordance with the conditions established by law.

General Meetings, whether they are ordinary, extraordinary, or mixed, shall deliberate in accordance with the conditions for a quorum and majority as established in the provisions governing them, and shall exercise the powers assigned to them by the law.

The voting right attached to capital or dividend shares is proportional to the portion of capital that they represent. Each share gives the right to one vote.

A double voting right is nevertheless assigned, in accordance with legal conditions, to all shares fully paid up for which evidence is provided of nominal registration for at least two years in the name of the same shareholder, or in the name of a person holding such rights following a succession, a sharing of the community of property between spouses, or an inter vivos gift granted by a shareholder to his/her spouse or to a relative in the direct line of succession, or following a transfer resulting from a merger or a division of a shareholder company.

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In the event of a capital increase through the incorporation of reserves, income, or issue premiums, the double voting right is granted, upon their issue, to nominal shares assigned free of charge to replace the previous shares already receiving such benefit.

The double voting right shall be duly withdrawn from any share having been converted to a bearer share or been subject to a transfer of ownership, except where this transfer results from a succession, a sharing of the community of property between spouses, or an inter vivos gift granted by a shareholder to his/her spouse or to a relative in the direct line of succession, or following a transfer resulting from a merger or a division of a shareholder company.

SECTION V

CORPORATE FINANCIAL YEAR - CORPORATE FINANCIAL STATEMENTS - ALLOCATION AND DISTRIBUTION OF PROFITS

The corporate financial year is defined under Article 5.

Regular accounts of Company operations shall be kept, in conformity with the law and commercial practices.

At the end of each financial year, the Board of Directors shall conduct an inventory of all the assets and liabilities. It shall also prepare the annual financial statements in conformity with the provisions of Part II, Book 1 of the Commercial Code.

It shall attach to the statement of financial position a statement of sureties, endorsements, and guarantees given by the Company and a statement of collateral pledged by it.

It shall prepare an annual report containing the information required by law.

The annual report shall include, where applicable, the Group’s annual report where the Company must prepare and publish consolidated financial statements as required law.

Where applicable, the Board of Directors shall prepare accounting estimates as required by the law and regulations.

All these documents shall be provided to the auditor in accordance with legal and regulatory conditions.