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from MERCIALYS (EPA:MERY)

Acquisition or disposal of the issuer's own shares / Transaction in own shares (aggregate version)

French limited company (société anonyme) with capital of Euro 93,886,501
Registered office: 16-18, rue du Quatre-Septembre
75002 Paris, France
Paris trade and companies register: 424 064 707

Declaration of transactions in own shares from September 7, 2026 to September 11, 2026 inclusive

In accordance with Article 5 of European Regulation no. 596/2014, Mercialys announces having carried out the following share buyback transactions from September 7, 2026 to September 11, 2026:

Issuer nameIssuer identifier code (LEI)Transaction dateFinancial instrument identifier code (ISIN Code)Total daily volume (number of shares)Daily weighted average price for share purchasesMarket (MIC Code)
MERCIALYS969500081CGAXB7YS43307/09/2026FR001024163877,92710.8268XPAR
MERCIALYS969500081CGAXB7YS43308/09/2026FR001024163814,97210.7649XPAR
MERCIALYS969500081CGAXB7YS43309/09/2026FR0010241638151,77410.7545XPAR
MERCIALYS969500081CGAXB7YS43310/09/2026FR001024163812,27810.7114XPAR
MERCIALYS969500081CGAXB7YS43311/09/2026FR001024163842,09010.5495XPAR
Total299 04110,7432

These transactions are intended to meet obligations relating to cover the existing free share allocation plans for the benefit of employees and executive officers. They are carried out pursuant to a share buyback mandate granted to an investment services provider, covering a maximum of 430,000 shares and valid until December 31, 2026. The transactions fall within the scope of the share buyback program authorized by the Shareholders’ General Meeting of April 23, 2026 (16th resolution), a description of which is included in the Company’s 2025 Universal Registration Document (§ 7.1.2.3).

Paris, September 14, 2026

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