8 H1 2026 RESULTS High: €105.9(1) 03/06/2025 €84.92(1) 08/04/2026 SHAREHOLDER’S NOTEBOOK SAINT-GOBAIN SHARE PERFORMANCE FROM 01/01/2021 TO 08/04/26 NO. OF SHARES OUTSTANDING (at 06/30/2026) ~489 million shares OWNERSHIP STRUCTURE (at 06/30/2026 – %, estimated) 8.4% Group Savings Plan (employee shareholders) 35.4% Institutional investors Americas-Asia 8.5% Private shareholders 1.0% Treasury shares DATES FOR YOUR DIARY FINANCIAL CALENDAR Nine-month sales October 27, 2026 (after market close) ONLINE DOCUMENTATION 2025 Universal Registration Document 2026 Sustainable Construction Magazine 14.3% Institutional investors France 32.4% Institutional investors Other Europe CONTACTS 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 — (1) Saint-Gobain share — CAC 40 Recent performance at 08/04/2026 (%) Saint-Gobain share CAC 40 +126.5% +27.4% +14.9% +56.1% Performance since 01/01/2021 (%) Performance since 01/01/2024 (%)
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