Inventiva announces temporary trading halt of its ordinary shares on Euronext Paris

Daix (France), New York City (New York, United States), November 13, 2025 –Inventiva (Euronext Paris and Nasdaq: IVA) ("Inventiva" or the "Company"), a clinical-stage biopharmaceutical company focused on the development of oral therapies for the treatment of metabolic dysfunction-associated steatohepatitis ("MASH"), announced today that trading of its ordinary shares on the regulated market of Euronext Paris ("Euronext Paris") will be temporarily halted, at the Company’s request, from the opening of the market at 9:00 a.m. (CET). This trading halt takes place in the context of the previously announced public offering by the Company in the United States only of new American Depositary Shares (the "ADSs"), each representing one new ordinary share of the Company with a nominal value of €0.01 (the "Offering"), in order to allow for the confirmation of allocations to investors and the announcement of the pricing of the Offering.

This suspension will be effective until a new communication is released by the Company. Trading on Euronext Paris is expected to resume today, November 13, 2025, at approximately 3:30 p.m. (CET), which is the earliest time ADSs are expected to begin trading on the Nasdaq Global Market (9:30 am (ET)), under the ticker symbol "IVA".

Inventiva is a clinical-stage biopharmaceutical company focused on the research and development of oral small molecule therapies for the treatment of patients with MASH. The Company is currently evaluating lanifibranor, a novel pan-PPAR agonist, in the NATiV3 pivotal Phase 3 clinical trial for the treatment of adult patients with MASH, a common and progressive chronic liver disease.

Inventiva is a public company listed on compartment B of the regulated market of Euronext Paris (ticker: IVA, ISIN: FR0013233012) and on the Nasdaq Global Market in the United States (ticker: IVA).http://www.inventivapharma.com

This press release contains certain forward-looking statements with respect to the proposed trading halt. Although the Company believes its expectations are based on reasonable assumptions, these forward-looking statements are subject to numerous risks and uncertainties, which could cause actual results to differ materially from those expressed in, or implied or projected by, the forward-looking statements.

Other than as required by applicable law, the Company does not undertake any obligation to update or revise any forward-looking information or statements. This press release has been prepared in both French and English. In the event of any differences between the two texts, the French language version shall supersede.

This press release does not constitute an offer to sell or the solicitation of an offer to buy securities in any jurisdiction, and shall not constitute an offer, solicitation or sale in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of that jurisdiction.

The distribution of this document may, in certain jurisdictions, be restricted by local legislations. Persons into whose possession this document comes are required to inform themselves about and to observe any such potential local restrictions.

The securities offered as part of the Offering have not been and will not be offered or sold to the public in France (except for public offerings defined in Article L.411-2 1° of the French Monetary and Financial Code).

The securities offered as part of the Offering may only be offered or sold in France pursuant to Article L. 411-2 1° of the French Monetary and Financial Code to "qualified investors" (investisseurs qualifiés) (as such term is defined in Article 2(e) of Prospectus Regulation) acting for their own account, and in accordance with Articles L. 411-1, L. 411-2 and D. 411-2 to D.411-4 of the French Monetary and Financial Code.

This announcement is not an advertisement and not a prospectus within the meaning of the Prospectus Regulation.

In relation to each Member State of the European Economic Area (each, a "Member State") no offer to the public of securities may be made in that Member State other than:

For the purposes of this provision, the expression an "offer to the public" in relation to any securities in any Member State means the communication in any form and by any means of sufficient information on the terms of the offer and any securities to be offered so as to enable an investor to decide to purchase any ordinary shares.

This document is only being distributed to, and is only directed at, persons in the United Kingdom that (i) are "investment professionals" falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (as amended, the "Order"), (ii) are persons falling within Article 49(2)(a) to (d) ("high net worth companies, unincorporated associations, etc.") of the Order, or (iii) are persons to whom an invitation or inducement to engage in investment activity (within the meaning of Article 21 of the Financial Services and Markets Act 2000) in connection with the issuance or sale of any securities may otherwise lawfully be communicated or caused to be communicated (all such persons together being referred to as "Relevant Persons"). This document is directed only at Relevant Persons and must not be acted on or relied on by persons who are not Relevant Persons. Any investment or investment activity to which this document relates is available only to Relevant Persons and will be engaged in only with Relevant Persons.