| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Oplinger William F | President, CEO & Director, Director | 201 ISABELLA STREET, SUITE 500, PITTSBURGH | /s/ Marissa P. Earnest, attorney-in-fact for William F. Oplinger | 02 Feb 2026 | 0001573449 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AA | Common Stock, par value $0.01 per share | Tax liability | $899,898 | -14,840 | -4.3% | $60.64 | 328,938 | 29 Jan 2026 | Direct | F1 |
| holding | AA | Common Stock, par value $0.01 per share | 542 | 29 Jan 2026 | By Company 401(k) Plan | F2 |
| Id | Content |
|---|---|
| F1 | Represents the withholding of shares by the issuer to satisfy the reporting person's tax obligations upon the vesting of restricted stock units (RSUs) granted in 2025. |
| F2 | Fluctuations in 401(k) share amounts reflect the plan's unit reporting method; units represent interests in the Company's stock fund. |