| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Jones Tammi A | EVP & CHRO | 201 ISABELLA STREET, SUITE 500, PITTSBURGH | /s/ Marissa P. Earnest, attorney-in-fact for Tammi A. Jones | 30 Jan 2026 | 0001808037 |
| 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 | +9,340 | +21% | $0.000000 | 54,519 | 28 Jan 2026 | Direct | F1 |
| transaction | AA | Common Stock, par value $0.01 per share | Award | $0 | +1,870 | +3.4% | $0.000000 | 56,389 | 28 Jan 2026 | Direct | F1 |
| transaction | AA | Common Stock, par value $0.01 per share | Award | $0 | +1,770 | +18% | $0.000000 | 11,401 | 28 Jan 2026 | By Spouse | F1 |
| transaction | AA | Common Stock, par value $0.01 per share | Award | $0 | +530 | +4.6% | $0.000000 | 11,931 | 28 Jan 2026 | By Spouse | F1 |
| holding | AA | Common Stock, par value $0.01 per share | 60 | 28 Jan 2026 | By Company 401(k) | F2 |
| Id | Content |
|---|---|
| F1 | Award of restricted stock units (RSUs), which are settled in stock upon vesting, and generally will vest ratably over a three-year period on the first, second, and third anniversary of the date of grant. |
| F2 | Fluctuations in 401(k) share amounts reflect the plan's unit reporting method; units represent interests in the Company's stock fund. |