| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Mendez-Andino Jose | EVP, Chief R&D Officer | ONE OWENS CORNING PARKWAY, TOLEDO | /s/ Katherine M. Serevitch, Attorney-in-Fact | 10 Nov 2025 | 0001855650 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OC | $.01 Par Value Common | Award | $7,427 | +71 | +0.46% | $104.94 | 15,587 | 06 Nov 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Accrual of dividend equivalents on deferred shares. |