| 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 | 25 Feb 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 | +3,884 | +7.2% | $0.000000 | 57,470 | 23 Feb 2026 | Direct | F1 |
| transaction | AA | Common Stock, par value $0.01 per share | Tax liability | $123,149 | -2,059 | -3.6% | $59.81 | 55,411 | 23 Feb 2026 | Direct | F2 |
| transaction | AA | Common Stock, par value $0.01 per share | Award | $4,605 | +77 | +0.14% | $59.81 | 55,488 | 23 Feb 2026 | Direct | F3 |
| transaction | AA | Common Stock, par value $0.01 per share | Tax liability | $2,452 | -41 | -0.07% | $59.81 | 55,447 | 23 Feb 2026 | Direct | F4 |
| transaction | AA | Common Stock, par value $0.01 per share | Award | $0 | +1,463 | +13% | $0.000000 | 12,714 | 23 Feb 2026 | By Spouse | F1 |
| transaction | AA | Common Stock, par value $0.01 per share | Tax liability | $45,575 | -762 | -6% | $59.81 | 11,952 | 23 Feb 2026 | By Spouse | F2 |
| transaction | AA | Common Stock, par value $0.01 per share | Award | $1,734 | +29 | +0.24% | $59.81 | 11,981 | 23 Feb 2026 | By Spouse | F3 |
| transaction | AA | Common Stock, par value $0.01 per share | Tax liability | $957 | -16 | -0.13% | $59.81 | 11,965 | 23 Feb 2026 | By Spouse | F4 |
| holding | AA | Common Stock, par value $0.01 per share | 60 | 23 Feb 2026 | By Company 401(k) Plan | F5 |
| 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. |
| F3 | Shares acquired pursuant to stock settlement of dividend equivalents accumulated in cash and converted to stock upon the vesting and settlement of the underlying PRSUs, granted in 2023, based on the share price at the time of vesting. |
| F4 | Represents the withholding of shares by the issuer to satisfy the reporting person's tax obligations upon stock settlement of dividend equivalents accumulated in cash and converted to stock upon the vesting and settlement of the underlying PRSUs, granted in 2023, based on the share price at the time of vesting. |
| F5 | Fluctuations in 401(k) share amounts reflect the plan's unit reporting method; units represent interests in the Company's stock fund. |