Mersen — Report Publication Announcement 2021

Nov 4, 2021

PRESS RELEASE

MERSEN: 2022 PROVISIONAL FINANCIAL CALENDAR

PARIS, NOVEMBER 4 TH , 2021 – Mersen (Euronext FR0000039620 – MRN), a global expert in electrical power and advanced materials, announces its provisional calendar for fiscal year 2022.

2021 4 TH QUARTER SALES	th January 27 , 2022 after market closing
Quiet Period	nd th From January 12 to January 27 , 2022
2021 FULL YEAR RESULTS	th March 16 , 2022 before market opening
Quiet Period	14th to March 16 th, 2022 From February
2022 1 ST QUARTER SALES	th, 2022 April 27 after market closing
Quiet Period	nd th From April 12 to April 27 , 2022
2022 INTERIM RESULTS	July 29th, 2022 before market opening
Quiet Period	June 29th to July 29th From , 2022
2022 3 RD QUARTER SALES	th October 26 , 2022 after market closing
Quiet Period	th to October th From October 11 26 , 2022

You can also find this calendar and our communications on our application by scanning the QR code below:

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 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 power, electronics, electric vehicles, aeronautics, space or countless other sectors, wherever technology is progressing, you will always find a bit of Mersen.

For more information, please consult Mersen's website: www.mersen.com.

MERSEN IS LISTED ON EURONEXT PARIS – COMPARTMENT B

INVESTOR RELATIONS MEDIA RELATIONS Mersen Brunswick Tél. + 33 (0) 1 46 91 54 40 Tél. +33 (0) 1 85 65 83 83

Véronique Boca Guillaume Maujean/Xavier Mas Email : dri@mersen.com Email : mersen@brunswickgroup.com