CENTURY ALUMINUM CO 10-Q

Item 5. Other Information Disclosure Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 ("ITRA"), effective August 10, 2012, added a new subsection (r) to Section 13 of the Exchange Act, which requires issuers that file periodic reports with the SEC to disclose in their annual and quarterly reports whether, during the reporting period, they or any of their "affiliates" (as defined in Rule 12b-2 under the Exchange Act) have knowingly engaged in specified activities or transactions relating to Iran, including activities not prohibited by U.S. law and conducted outside the U.S. by non-U.S. affiliates in compliance with applicable laws. Issuers must also file a notice with the SEC if any disclosable activity under ITRA has been included in an annual or quarterly report. Because the SEC defines the term "affiliate" broadly, our largest stockholder may be considered an affiliate of the Company despite the fact that the Company has no control over its largest stockholder’s actions or the actions of its affiliates. As such, pursuant to Section 13(r)(1)(D)(iii) of the Exchange Act, the Company hereby discloses the following information provided by our largest stockholder regarding transactions or dealings with entities controlled by the Government of Iran ("the GOI"): During the quarter ended June 30, 2025, non-U.S. affiliates of the largest stockholder of the Company ("the non-U.S. Stockholder Affiliates") entered into sales contracts for agricultural products with, or for delivery to or from Iranian entities wholly or majority owned by the GOI. The non-U.S. Stockholder Affiliates performed their obligations under the contracts in compliance with applicable sanction laws and, where required, with the necessary prior approvals by the relevant governmental authorities. The gross revenue of the non-U.S Stockholder Affiliates related to the contracts did not exceed the value of USD $137 million for the quarter ended June 30, 2025. The non-U.S. Stockholder Affiliates do not allocate net profit on a country-by-country or activity-by-activity basis, but estimate that the net profit attributable to the contracts would not exceed a small fraction of the gross revenue from such contracts. It is not possible to determine accurately the precise net profit attributable to such contracts. The contracts disclosed above do not violate applicable sanctions laws administered by the U.S. Department of the Treasury, Office of Foreign Assets Control, and are not the subject of any enforcement action under Iran sanction laws. The non-U.S. Stockholder Affiliates expect to continue to engage in similar activities in the future in compliance with applicable economic sanctions and in conformity with U.S. secondary sanctions. The Company and its global subsidiaries had no transactions or activities requiring disclosure under ITRA, nor were we involved in the transactions described in this section. As of the date of this report, the Company is not aware of any other activity, transaction or dealing by it or any of its affiliates during the quarter ended June 30, 2025, that requires disclosure in this report under Section 13(r) of the Exchange Act. Rule 10b5-1 Trading Plans During the quarter ended June 30, 2025, 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. 41 Table of Contents Item 6. Exhibits Exhibit Number Description of Exhibit Incorporated by Reference Filed Herewith Form File No. Filing Date 4.1 Indenture, dated as of July 22, 2025, between Century Aluminum Company, the Guarantors (as defined therein) and Wilmington Trust, National Association, as trustee and noteholder collateral agent. 8-K 001-34474 July 24, 2025 4.2 Form of 6.875% Senior Secured Notes due 2032 (included as Exhibit A to the Indenture filed as Exhibit 4.1). 8-K 001-34474 July 24, 2025 10.1 Second Lien Pledge and Security Agreement, dated as of July 22, 2025 by and among Century Aluminum Company, the other Grantors (as defined therein) and Wilmington Trust, National Association, as collateral agent. 8-K 001-34474 July 24, 2025 10.2 Collateral Agency Agreement, dated as of July 22, 2025, by and among Century Aluminum Company, the other Grantors (as defined therein) and Wilmington Trust, National Association, as trustee and collateral agent. 8-K 001-34474 July 24, 2025 10.3 Amendment No. 5, dated as of July 22, 2025, to the Second Amended and Restated Loan and Security Agreement, dated as of May 16, 2018, among Century Aluminum Company, Century Aluminum of South Carolina, Inc., Century Aluminum of Kentucky General Partnership, NSA General Partnership and Century Aluminum Sebree LLC, as borrowers, and Wells Fargo Capital Finance, LLC, as agent and lender. 8-K 001-34474 July 24, 2025 10.4 Century Aluminum Company 2025 Incentive Plan S-8 333-288080 June 16, 2025 10.5 Form of RSU Award Agreement (Directors) under the 2025 Incentive Plan X 10.6 Form of RSU Award Agreement under the 2025 Incentive Plan X 10.7 Form of PSU Award Agreement under the 2025 Incentive Plan X 31.1 Rule 13a-14(a)/15d-14(a) Certification of the Chief Executive Officer X 31.2 Rule 13a-14(a)/15d-14(a) Certification of the Principal Financial Officer X 32.1 Section 1350 Certification (pursuant to Sarbanes-Oxley Section 906) by Chief Executive Officer X 32.2 Section 1350 Certification (pursuant to Sarbanes-Oxley Section 906) by Principal Financial Officer X 101.INS XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document 101.SCH Inline XBRL Taxonomy Extension Schema X 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase X 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase X 101.LAB Inline XBRL Taxonomy Extension Label Linkbase X 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase X 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 42 Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Century Aluminum Company Date: August 7, 2025 By: /s/ PETER TRPKOVSKI Peter Trpkovski Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer) Date: August 7, 2025 By: /s/ ROBERT HOFFMAN Robert Hoffman Senior Vice President, Chief Information Officer and Chief Accounting Officer (Principal Accounting Officer) 43