| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Osborne William H | Director | C/O ARMSTRONG WORLD INDUSTRIES, INC., 2500 COLUMBIA AVENUE, LANCASTER | /s/ Alan M. Kidd, Attorney-in-fact | 11 Aug 2025 | 0001445187 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AWI | Common Stock | Sale | $18,878 | -100 | -2.3% | $188.78 | 4,241 | 08 Aug 2025 | Direct |