Compagnie de Saint-Gobain

Regulatory Filings • Dec 8, 2025

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PRESS RELEASE December 8, 2025

SAINT-GOBAIN CANCELS 4.2 MILLION SHARES

On December 3, 2025, Saint-Gobain cancelled 4,243,098 treasury shares purchased on the market.

Following this operation, the total number of shares composing the capital is 495 million and the number of shares outstanding is now 493 million compared to 497 million at the end of December, 2024.

The Group allocated €402 million to buy back its own shares (net of employee share creation) in 2025.

About Saint-Gobain

Worldwide leader in light and sustainable construction, Saint-Gobain designs, manufactures and distributes materials and services for the construction and industrial markets. Its integrated solutions for the renovation of public and private buildings, light construction and the decarbonization of construction and industry are developed through a continuous innovation process and provide sustainability and performance. The Group, celebrating its 360th anniversary in 2025, remains more committed than ever to its purpose "MAKING THE WORLD A BETTER HOME".

€46.6 billion in sales in 2024 More than 161,000 employees, locations in 80 countries Committed to achieving net zero carbon emissions by 2050

For more information about Saint-Gobain, visit www.saint-gobain.com and follow us on X @saintgobain

ANALYST/INVESTOR RELATIONS PRESS RELATIONS

Vivien Dardel Floriana Michalowska Karim Safsaf James Weston (+33) 1 88 54 29 77 (+33) 1 88 54 19 09 (+33) 1 88 54 00 60 (+33) 1 88 54 01 24

Patricia Marie Laure Bencheikh (+33) 1 88 54 26 83 (+33) 1 88 54 26 38 Yanice Biyogo (+33) 1 88 54 27 96