| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| CORDEIRO EDUARDO E | Director | ONE OWENS CORNING PARKWAY, TOLEDO | /s/ Katherine M. Serevitch, Attorney-in-Fact | 12 Aug 2025 | 0001201087 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OC | $.01 Par Value Common | Award | $44,315 | +308 | +2.2% | $143.88 | 14,453 | 08 Aug 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Deferred share portion of quarterly Director retainer/fees. |