| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Lund Elizabeth Hefley | Director | C/O ATI INC., 2021 MCKINNEY AVE., SUITE 1100, DALLAS | /s/ Amanda J. Skov, Attorney-in-Fact for Elizabeth H. Lund | 21 Nov 2025 | 0002095590 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATI | Common Stock, par value $0.10 per share | Award | $0 | +631 | $0.000000 | 631 | 19 Nov 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date. |
| F2 | Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. |