144 0001603836 XXXXXXXX LIVE 0000949157 CENTURY ALUMINUM CO 001-34474 1 SOUTH WACKER DRIVE SUITE 1000 CHICAGO IL 60606 3126963101 Hoffman Robert F Officer Common Stock Charles Schwab & Co.

3000 Schwab Way Westlake TX 76262

12000 245940.00 92293344 03/17/2025 NASDAQ GS Common Stock 12/31/2022 Equity Compensation Issuer N 12000 12/31/2022 Services Rendered Y Shares to be sold were acquired as Equity Compensation between 12/31/2022-12/31/23 03/17/2025 Robert Hoffman