0000949157 2026-10-30 2026-10-30 0000949157 1 2026-10-30 2026-10-30 0000949157 2 2026-10-30 2026-10-30 0000949157 3 2026-10-30 2026-10-30 0000949157 4 2026-10-30 2026-10-30 0000949157 5 2026-10-30 2026-10-30 0000949157 6 2026-10-30 2026-10-30 0000949157 7 2026-10-30 2026-10-30 0000949157 8 2026-10-30 2026-10-30 0000949157 9 2026-10-30 2026-10-30 iso4217:USD pure S-3 S-3ASR EX-FILING FEES 0000949157 CENTURY ALUMINUM CO N/A N/A S-3 CENTURY ALUMINUM CO false Equity Common Stock true 0.000087 false Equity Preferred Stock true 0.000087 false Debt Debt Securities true 0.000087 false Other Guarantees of Debt Securities true 0.000087 false Other Warrants true 0.000087 false Equity Depositary Shares true 0.000087 false Other Subscription Rights true 0.000087 false Other Stock Purchase Contracts true 0.000087 false Other Stock Purchase Units true 0.000087 0.00 0.00 0.00 0.00 0.00 An indeterminate aggregate initial offering price or number of the securities of each identified class is being registered as may from time to time be offered at indeterminate prices or upon conversion, exchange or exercise of securities registered hereunder to the extent any such securities are, by their terms, convertible into, or exchangeable or exercisable for, such securities. An indeterminate aggregate initial offering price or number of the securities of each identified class is being registered as may from time to time be offered at indeterminate prices. Separate consideration may or may not be received for securities that are issuable on conversion, exchange or exercise of other securities or that are issued in units or represented by depositary shares. In accordance with Rule 456(b) and 457(r) under the Securities Act, the Registrant is deferring payment of all registration fees. See Note (1). See Note (1). See Note (1). The debt securities may be guaranteed pursuant to guarantees by one or more subsidiaries of the Registrant. Pursuant to Rule 457(n), no separate fee for the guarantees is payable. See Note (1). The warrants covered by this registration statement may be warrants for debt securities, common stock, preferred stock, depositary shares or securities of third parties or other rights. See Note (1). See Note (1). See Note (1). See Note (1).