8 2025 RESULTS CONTACTS SHAREHOLDER’S NOTEBOOK SAINT-GOBAIN SHARE PERFORMANCE FROM 01/01/2021 TO 02/27/2026 TOTAL NUMBER OF SHARES (at December 31, 2025) ~493 million OWNERSHIP STRUCTURE (at December 31, 2025 – %, estimated) DATES FOR YOUR DIARY Sales for the first quarter of 2026: April 23, 2026 after close of trading Annual General Meeting (AGM): June 4, 2026, 3:00 p.m. Salle Pleyel, 75008 Paris First-half 2026 results: July 30, 2026 after close of trading Sales for the first nine months of 2026: October 27, 2026 after close of trading Managing Editor: Vivien Dardel Manager, Individual Shareholders: Blandine Ruesch ISSN No. 1245-3978 Design: Cédric Bertandeau Photo credits: Saint-Gobain photo library 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 1 88 54 05 05 (from outside France) • Online, at: www.saint-gobain.com • By e-mail, at: actionnaires@saint-gobain.com • Via the Saint-Gobain Shareholder App • By post: Saint-Gobain Service Actionnaires Tour Saint-Gobain 12 place de l’Iris 92400 Courbevoie France 7.7% Group Savings Plan (employee shareholders) 35.2% Institutional investors Americas-Asia 15.5% Institutional investors France 8.5% Private shareholders 32.8% Institutional investors Other Europe 0.5% Treasury shares High: 105.9€(1) 03/06/2025 — (1) Saint-Gobain share — CAC 40 86.24€(1) 02/27/2026 Recent performance at 02/27/2026 (%) Saint-Gobain share CAC 40 +130.0% +29.4% +13.8% 54.6% Performance since 01/01/2021 (%) Performance since 01/01/2024 (%)
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