| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Narayan Vijai | VP, Corp Ctrl & CAO | 1550 WEST MCEWEN DRIVE, SUITE 500, FRANKLIN | /s/ John M. Donnan, with power of attorney for Vijai Narayan | 10 Nov 2025 | 0001978222 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | KALU | Common Stock, par value $0.01 per share | Tax liability | $15,408 | -163 | -2.2% | $94.53 | 7,363 | 07 Nov 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Shares withheld to satisfy the withholding tax obligations resulting from the vesting on November 7, 2025 of certain restricted stock units granted to the reporting person in 2019 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. |
| F2 | Includes 6,355 shares acquired pursuant to grants of restricted stock units. |