| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| GLASSER ERROL | Director | C/O CENTURY ALUMINUM COMPANY, 1 S. WACKER DRIVE, SUITE 1000, CHICAGO | /s/ Paul Sharobeem, as attorney in fact for Errol Glasser | 18 Jun 2025 | 0001203889 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CENX | Common Stock | Award | $0 | +7,778 | +7% | $0.000000 | 118,697 | 16 Jun 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Represents annual grant of restricted stock units ("RSUs"), all of which vested on the date of grant. |
| F2 | Includes shares of common stock issuable pursuant to vested RSUs, the settlement of which have been deferred pursuant to an annual deferral election previously made by the Reporting Person. |