September 1, 2025



Reporting on share buyback transactions carried out in accordance with Article 5 §2 of
Regulation (EU) No 596/2014 of April 16, 2014 on market abuse


Share buyback program authorized by the Annual General Meeting of June 5, 2025 (16th resolution)

In accordance with applicable regulations, Compagnie de Saint-Gobain announces having carried out the following share buyback
transactions in accordance with Article 5 §2 of Regulation (EU) No 596/2014 from August 4 to August 29, 2025


Issuer: Compagnie de Saint-Gobain

Security type: SHARES - ISIN Code : FR0000125007




Total daily volume Daily weighted
Transaction date (number of shares average purchase Amount (in euros) Market (MIC Code)
bought back) price


2025-08-04 302,129 92.323 27,893,456 XPAR/CEUX/TQEX/AQEU



2025-08-05 252,650 93.433 23,605,873 XPAR/CEUX/TQEX/AQEU



2025-08-06 62,706 93.930 5,890,000 XPAR/CEUX/TQEX/AQEU



2025-08-07 7,922 93.967 744,407 XPAR/CEUX/TQEX/AQEU



2025-08-26 308,203 92.922 28,638,778 XPAR/CEUX/TQEX/AQEU



2025-08-27 13,831 92.945 1,285,517 XPAR/CEUX/TQEX/AQEU



2025-08-29 115,221 92.680 10,678,682 XPAR/CEUX/TQEX/AQEU



Total over the period 1,062,662 92.915 98,736,711




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