| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Williams John David | Director | ONE OWENS CORNING PARKWAY, TOLEDO | /s/ Katherine M. Serevitch, Attorney-in-Fact | 2025-08-11 | 0001453133 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OC | $.01 Par Value Common | Award | $35.2K | +239 | +0.47% | $147.17 | 51.2K | Aug 7, 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Accrual of dividend equivalents on deferred stock units. |