LETTER TO SHAREHOLDERS N°96

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 8 LETTER TO SHAREHOLDERS N°96 SHAREHOLDER’S NOTEBOOK • 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 SHAREHOLDER’S NOTEBOOK Recent performance at 03/10/2023 (%) Saint-Gobain share CAC 40 Performance since 01/01/2021 +48.3% +30.1% Performance since 01/01/2023 +21.9% +11.5% — (1) Saint-Gobain share — CAC 40 DATES FOR YOUR DIARY FINANCIAL AGENDA First-quarter sales: April 27, 2023 after close of trading on the Paris stock market Annual General Meeting: 3:00pm on June 8, 2023 Salle Pleyel, 75008 Paris First-half results: July 26, 2023 after close of trading on the Paris stock market Nine-month sales: October 26, 2023 after close of trading on the Paris stock market TOTAL NUMBER OF SHARES (at December 31, 2022) 511 million OWNERSHIP STRUCTURE (at December 31, 2022 –%, estimated) 8.8% Group Savings Plan (employee shareholders) 28.6% Institutional investors: Americas – Asia 23.2% Institutional investors: France 7.4% Private shareholders 32.0% Institutional investors: Other Europe SAINT-GOBAIN SHARE PERFORMANCE 01/01/2021 TO 03/10/2023 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 01/01/21 02/01/21 03/01/21 04/01/21 05/01/21 06/01/21 07/01/21 08/01/21 09/01/21 10/01/21 11/01/21 12/01/21 01/01/22 02/01/22 03/01/22 04/01/22 05/01/22 06/01/22 07/01/22 08/01/22 09/01/22 10/01/22 11/01/22 12/01/22 01/01/23 02/01/23 03/01/23 €55.630(1) 03/10/2023 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. High: €66.930(1) 01/12/2022 Low: €35.595(1) 09/29/2022

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