PRESS RELEASE

MERSEN: ANNUAL GENERAL MEETING OF MAY 12, 2026

PARIS, MAY 12, 2026 – The combined general meeting of shareholders of Mersen (Euronext FR0000039620 - MRN), a global expert in Electrical Power and Advanced Materials, was held today under the chairmanship of Jocelyne Vassoille, Vice-Chairwoman of the Board of Directors.

The shareholders' meeting approved all of the resolutions submitted and all of them were adopted by more than 87 %.

In particular, the shareholders approved:

• the company financial statements and consolidated financial statements for fiscal year 2025;
• the payment of a dividend of €0.9 per share in cash for fiscal year 2025. The dividend will be paid on July 9, 2026;
• the reappointment of Bpifrance Participations as a director, the nomination of Mr Jean-Philippe Puig as a director and the ratification of Mrs Florence Lambert as a director;
• the compensation policy for corporate officers and members of the Board of Directors in respect of fiscal year 2026;
• the fixed and variable items of total compensation and advantages of all kind paid or due to corporate officers with respect to fiscal year 2025;
• the share buyback program;
• the authorization to the Board of Directors to grant free and performance shares to Group employees and corporate officers;
• and the financial authorizations granted to the Board of Directors.

The complete results of the votes and the video of the general meeting are available on the Company's website at https://www.mersen.com/en/investors/annual-general-meeting.

ABOUT MERSEN

Mersen is a global expert in electrical power and advanced materials for high-tech industries. With more than 50 industrial sites and 24 R&D centers in 32 countries around the world, Mersen develops custom-built solutions and delivers key products for clients in order to meet the new technological challenges shaping tomorrow’s world. For over 130 years, Mersen has focused tirelessly on innovation to accompany its clients and meet their needs. Be it in wind power, solar, electronics, electric vehicles, aeronautics, space or many other sectors, wherever technology is progressing, you will always find a bit of Mersen.

INVESTOR AND ANALYST CONTACT

Véronique Boca
Mersen
Tel. +33 (0)1 46 91 54 40
Email: dri@mersen.com

PRESS CONTACT

Christophe Menger/Stephan Bürklin
Brunswick
Phone: +33 (0)7 52 63 00 89
Email: mersen@brunswickgroup.com