Mersen — AGM Information 2021

Apr 12, 2021

MERSEN: ANNUAL GENERAL MEETING OF MAY 20, 2021

TO BE HELD BEHIND CLOSED DOORS

PARIS, APRIL 12, 2021

In the context of the Covid-19 crisis and in the interests of the safety of shareholders, Mersen's Chief Executive Officer, acting on behalf of the Board of Directors, has decided to hold the Combined Shareholders' Meeting of May 20, 2021 at 10:00 a.m. behind closed doors, without the physical presence of the shareholders and other people authorized to attend.

Due to travel restrictions currently in place as a result of French Decree no. 2020-1310 of October 29, 2020, as amended, the shareholders would not be able to attend the meeting.

This decision has been taken in accordance with French government order no. 2020-321 of March 25, 2020, as extended and amended.

The preliminary notice to the shareholders, including the agenda of the Meeting, the text of the resolutions submitted for approval by the shareholders and the main terms and conditions of participating and voting at the Meeting has been published today in the French legal gazette (Bulletin des Annonces Légales Obligatoires – BALO) and is available (in French) on the Company's website www.mersen.com/fr. In accordance with the legal provisions, the notice of meeting will be published 15 days before the date of the General Meeting at the latest in the BALO and in a journal of legal notices. It will also be available on the Company's website.

Broadcast of the meeting and conditions of participating

It will not be possible to attend and vote at the Meeting (by conference call or video call) as it is technically impossible to identify each shareholder.

The Meeting will be broadcast live in French in video format on the Company's website www.mersen.com/fr. A replay will be available within the time frame set out by the regulations.

As shareholders may not attend the Meeting in person, no admission cards will be issued.

Prior to the Meeting, shareholders are invited to vote or give proxy (preferably to the Chairman), either by post using the voting form, or online via the secure VOTACCESS platform.

Scrutineers

Lastly, in accordance with regulations, the role of scrutineers was proposed to shareholders among the ten leading shareholders with the largest number of voting rights, to the best of the Company's knowledge. To date, the designated scrutineers are Caisse des Dépôts et Consignations and Bpifrance Participations.

If one or both of these shareholders were to cease to be among the ten shareholders with the greatest number of voting rights at the date the General Meeting is convened, the identity and status of the new scrutineer(s) chosen will be published in accordance with the applicable regulations.

In general, shareholders are invited to regularly consult the 2021 Annual General Meeting pages of the Company's website www.mersen.com.

ABOUT MERSEN

Mersen is a global expert in electrical specialties and advanced materials for high-tech industries. With more than 50 industrial sites and 16 R&D centers in 35 countries around the world, Mersen develops customized solutions and delivers key products to its 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 power, electronics, electric vehicles, aeronautics, space or countless other sectors, wherever technology is progressing, you will always find a bit of Mersen.

MERSEN IS LISTED ON EURONEXT PARIS – COMPARTMENT B

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