| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Mannen Maryann T. | Director | ONE OWENS CORNING PARKWAY, TOLEDO | /s/ Katherine M. Serevitch, Attorney-in-Fact | 11 Aug 2025 | 0001408964 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OC | $.01 Par Value Common | Award | $16,363 | +111 | +0.43% | $147.17 | 25,773 | 07 Aug 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Accrual of dividend equivalents on deferred stock units. |