| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Beerman Molly S. | EVP & CFO | 201 ISABELLA STREET, SUITE 500, PITTSBURGH | /s/ Marissa P. Earnest, attorney-in-fact for Molly S. Beerman | 25 Feb 2026 | 0001691997 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AA | Common Stock, par value $0.01 per share | Award | $0 | +6,990 | +6.1% | $0.000000 | 122,501 | 23 Feb 2026 | Direct | F1 |
| transaction | AA | Common Stock, par value $0.01 per share | Tax liability | $181,822 | -3,040 | -2.5% | $59.81 | 119,461 | 23 Feb 2026 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | Earned performance restricted stock units (PRSUs) granted in 2023. |
| F2 | Represents the withholding of shares by the issuer to satisfy the reporting person's tax obligations upon the vesting of PRSUs granted in 2023. |