1 unchanged sentence
Rule 10b5-1 Trading Plans
−Removed: During the quarter ended March 31, 2026, none of the Company's directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of Company securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any "non-Rule 10b5-1 trading arrangement" as defined in Item 408 of Regulation S-K.
+Added: During the quarter ended June 30, 2026, none of the Company's directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of Company securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any "non-Rule 10b5-1 trading arrangement" as defined in Item 408 of Regulation S-K.
Exhibit Number Description of Exhibit Incorporated by Reference Filed Herewith
Form File No.
−Removed: Agreement of Purchase and Sale, dated February 2, 2026, by and between the Century Aluminum of Kentucky General Partnership and Justified DataPower LLC
−Removed: 8-K 001-34474 February 2, 2026
+Added: Amendment to Revolving Credit Facility, dated July 14th, between Nordural Grundartangi ehf, as borrower and Landsbankinn hf
Rule 13a-14(a)/15d-14(a) Certification of the Chief Executive Officer
11 unchanged sentences
Century Aluminum Company
−Removed: May 7, 2026 By:
+Added: August 6, 2026 By:
/s/ PETER TRPKOVSKI
2 unchanged sentences
(Principal Financial Officer)
−Removed: May 7, 2026 By:
+Added: August 6, 2026 By:
/s/ ROBERT HOFFMAN
3 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.