144 0001855650 XXXXXXXX LIVE 0001370946 Owens Corning 001-33100 ONE OWENS CORNING PARKWAY TOLEDO OH 43659 419-248-8000 Mendez-Andino Jose Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

246 44526.00 85784321 02/04/2025 NYSE Common 02/03/2024 Restricted Stock Vesting Issuer N 246 02/03/2024 Compensation N Jose L Mendez-Andino

One Owens Corning Parkway Toledo OH 43659

Common 11/19/2024 2593 501693.64 Jose L Mendez-Andino

One Owens Corning Parkway Toledo OH 43659

Common 02/03/2025 318 57329.04 02/04/2025 08/20/2024 /s/ Eric Janiak, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jose L Mendez-Andino