LETTER TO SHAREHOLDERS N°97

8 LETTER TO SHAREHOLDERS N°97 SHAREHOLDER’S NOTEBOOK SHAREHOLDER’S NOTEBOOK Recent performance at 08/31/2023 (%) Saint-Gobain share CAC 40 Performance since le 01/01/2021 +60.4% +31.8% Performance since le 01/01/2023 +31.8% + 13.0% — (1) Saint-Gobain share — CAC 40 TOTAL NUMBER OF SHARES (at June 30, 2023) 509 million OWNERSHIP STRUCTURE (at June 30, 2023 – %, estimated) 9.4% Group Savings Plan (employee shareholders) 29.6% Institutional investors: Americas – Asia 19.6% Institutional investors: France 7.4% Private shareholders 34.0% Institutional investors: Other Europe SAINT-GOBAIN SHARE PERFORMANCE 01/01/2021 TO 08/31/2023 €60.160(1) 08/31/2023 SIGN UP FOR THE E-LETTER TO SHAREHOLDERS To receive your copy of the Letter to Shareholders and keep abreast of all the latest Saint-Gobain news, sign up for the e-Letter to Shareholders, in the Shareholders section of www.saint-gobain.com or send an e-mail to actionnaires@saint-gobain.com. €66.930(1) 01/12/2022 DATES FOR YOUR DIARY FINANCIAL AGENDA Sales for the third quarter of 2023: October 26, 2023, after close of trading on the Paris stock market 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 01/01/21 01/02/21 01/03/21 01/04/21 01/05/21 01/06/21 01/07/21 01/08/21 01/09/21 01/10/21 01/11/21 01/12/21 01/01/22 01/02/22 01/03/22 01/04/22 01/05/22 01/06/22 01/07/22 01/08/22 01/09/22 01/10/22 01/11/22 01/12/22 01/01/23 01/02/23 01/03/23 01/04/23 01/05/23 01/06/23 01/07/23 01/08/23 YOUR CONTACTS Saint-Gobain’s Shareholder Relations Department will be pleased to answer any enquiries. Please feel free to contact them: • By dialing: (from France) 0 800 32 33 33 or +33 (0)1 88 54 05 05 (from outside France) • Online, at www.saint-gobain.com or www.lamaisonsaintgobain.fr • By e-mail, at: actionnaires@saint-gobain.com Managing Editor: Vivien Dardel Manager, Individual Shareholders: Abiba Tinor N°ISSN 1245-3978 Design: Cédric Bertandeau Photo credits: Saint-Gobain photo library • Via the Saint-Gobain Shareholder App • By post: Compagnie de Saint-Gobain Service Actionnaires Tour Saint-Gobain 12 place de l’Iris 92096 La Défense Cedex

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