Item 4 of the Schedule 13D is hereby amended and supplemented as follows: The Issuer completed an EUR84 million reserved offering subscribed by a limited number of investors which is expected to close on May 5, 2026 (the "Reserved Offering"). In the Reserved Offering, the Issuer issued 15,893,817 new ordinary shares (the "New Shares"), and one share warrant is attached to each New Share. The Reporting Persons did not participate in the Reserved Offering. The New Shares issued in the Reserved Offering represented an increase in the share capital of the Issuer which resulted in a dilution of the Reporting Persons' holdings. In the past 60 days, Bpifrance Participations sold 356,003 Ordinary Shares. Bpifrance Participations sold the amount of Ordinary Shares on the date and at the price set forth below in open market transactions. Unless otherwise noted, the sales of the Ordinary Shares were sold in multiple transactions at varying prices. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this Schedule 13D. March 10, 2026: - 226,532 Ordinary Shares at a weighted average price of EUR4.93 per share (multiple transactions at prices ranging from EUR4.85 to EUR5.03, inclusive). March 11, 2026: - 5,318 Ordinary Shares at a weighted average price of EUR4.96 per share (multiple transactions at prices ranging from EUR4.90 to EUR4.96, inclusive). March 18, 2026: - 124,153 Ordinary Shares at a weighted average price of EUR4.94 per share (multiple transactions at prices ranging from EUR4.85 to EUR5.00, inclusive). Since the filing of Amendment No. 4, CDC Croissance has acquired 130,000 Ordinary Shares and sold 289,645 Ordinary Shares. CDC Croissance purchased and sold the amount of Ordinary Shares on the date and at the price set forth below in open market transactions. Unless otherwise noted, the purchases and sales of the Ordinary Shares were purchased or sold in multiple transactions at varying prices. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the ranges set forth in this Schedule 13D. Purchased Ordinary Shares March 9, 2026: - 78,518 Ordinary Shares at a weighted average price of EUR4.51 per share (multiple transactions at prices ranging from EUR4.43 to EUR4.60, inclusive). March 12, 2026: - 51,482 Ordinary Shares at a weighted average price of EUR4.54 per share (multiple transactions at prices ranging from EUR4.49 to EUR4.60, inclusive). Sold Ordinary Shares March 30, 2026: - 289,645 Ordinary Shares at a weighted average price of EUR2.81 per share (multiple transactions at prices ranging from EUR2.75 to EUR2.88, inclusive). All of the Ordinary Shares that are held of record by the Reporting Persons as reported herein were acquired for investment purposes. The Reporting Persons retain the right to change their investment intent, from time to time to acquire additional Ordinary Shares or other securities of the Issuer, or to sell or otherwise dispose of all or part of the Ordinary Shares or other securities of the Issuer, if any, beneficially owned by them, in any manner permitted by law. The Reporting Persons may engage from time to time in ordinary course transactions with financial institutions with respect to the securities described herein. Except as set forth above, none of the Reporting Persons currently has any plans or proposals which would be related to or would result in any of the matters described in Items 4(a)-(j) of the Instructions to Schedule 13D. However, as part of the ongoing evaluation of investment and investment alternatives, the Reporting Persons may consider such matters and, subject to applicable law, may formulate a plan with respect to such matters, and, from time to time, may hold discussions with or make formal proposals to management or the board of directors of the Issuer or other third parties regarding such matters.