Acquisition or disposal of the issuer's own shares / Description of the buyback program
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 2, 2026 to September 4, 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 2, 2026 to September 4, 2026:
| Issuer name | Issuer identifier code (LEI) | Transaction date | Financial instrument identifier code (ISIN Code) | Total daily volume (number of shares) | Daily weighted average price for share purchases | Market (MIC Code) |
|---|---|---|---|---|---|---|
| MERCIALYS | 969500081CGAXB7YS433 | 02/09/2026 | FR0010241638 | 491 | 10.98 | XPAR |
| MERCIALYS | 969500081CGAXB7YS433 | 03/09/2026 | FR0010241638 | 26 864 | 10.954 | XPAR |
| MERCIALYS | 969500081CGAXB7YS433 | 04/09/2026 | FR0010241638 | 30 000 | 10.972 | XPAR |
| Total | 57,355 | 10.9636 |
These transactions are intended to meet obligations relating to cover the bonus share allocation plans for the benefit of employees and executive officers.
Paris, September 7, 2026