Compagnie de Saint-Gobain

AGM Information • Apr 28, 2021

Compagnie de Saint-Gobain – a French Société anonyme With a share capital of euros 2,130,734,852 Tour Saint-Gobain – 12, place de l'Iris – 92400 Courbevoie, France

On April 28, 2021

Access to information in respect of the Annual General Shareholders' Meeting to be held on June 3, 2021

The shareholders of Compagnie de Saint Gobain are invited to participate in the Annual General Shareholders' Meeting (ordinary and extraordinary) to be held exceptionally in closed session on June 3, 2021 at 3:00 p.m. (Paris time) by vote cast -preferably via the Internet- or by proxy. The Annual General Shareholders' Meeting will be broadcast live and in its entirety on Saint-Gobain's website: https://www.saint-gobain.com/en/finance/general-meeting.

The notice of meeting and the convening notice (which include the agenda of the meeting and the draft resolutions) were published in the French BALO (Bulletin des Annonces Légales Obligatoires) dated respectively March 29, 2021 and April 28, 2021. The rules governing shareholders' participation and vote at the meeting are described in the abovementioned notices.

Information and documents provided for by Article R. 225-83 of the French Commercial Code have been made available to shareholders since the convening of the meeting in compliance with applicable regulations:

• each holder of registered shares (actions détenues au nominatif) is entitled to request from the Company to receive such information and documents until the fifth day (included) before the meeting. Holders of bearer shares (actions détenues au porteur) must provide a registration certificate (attestation d'inscription) to be issued by their financial intermediary to exercise this right. Such requests should be sent either by email (preferable option) to the following address: actionnaires@saint-gobain.com or by mail to the registered office of the Company Tour Saint-Gobain - 12 place de l'Iris, 92096 La Défense Cedex – France.

Given the current health context and in accordance with the provisions of Article 3 of Order No. 2020-321 dated March 25, 2020, as amended and extended by Order No. 2020-1497 of December 2, 2020 and Decree No. 2021-255 of March 9, 2021, the abovementioned documents may be validly communicated by electronic message and shareholders are requested to provide their email address with their request.

• each shareholder is entitled to consult such information and documents at the registered office of the Company during the 15-day period preceding the meeting. Nevertheless, given the current health context, we recommend that shareholders give preference to requests by email to actionnaires@saintgobain.com and provide their email address with their request.

Documents and information relating to the meeting referred to in article R. 22-10-23 of the French Commercial Code are available on the Company's website at the following address:

https://www.saint-gobain.com/en/finance/general-meeting