SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549 FORM10-K (Mark One) ☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year endedDecember 31, 2024 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from ________to _________Commission file number333-274434 T1 Energy Inc. (Exact name of registrant as specified in its charter) 93-3205861 (IRS Employer Identification No.) 1211 E 4th St.Austin,Texas78702(409)599-5706 (Address, including zip code, and telephone number, including area code, of Registrant’s principal executive offices)Securities registered pursuant to Section 12(b) of the Act: None. Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes☐No☒ Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one): ☐Accelerated filer☒Smaller reporting companyEmerging growth company If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financialaccounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reportingunder Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.☐ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correctionof an error to previously issued financial statements.☐Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to § 240.10D-1(b).☐ As of June 30, 2024, the last business day of the Registrant’s most recently completed second quarter, the aggregate market value of the voting and non-voting common stock heldby non-affiliates, computed by reference to the closing price of $1.70 reported on the New York Stock Exchange, was approximately$196million. For the purposes of thiscalculation, shares of common stock beneficially owned by each executive officer, director, and holder of more than 10% of our common stock have been excluded in that suchpersons may be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination for other purposes. As of March27, 2025,155,938,092shares of the registrant’s common stock were outstanding. DOCUMENTS INCORPORATED BY REFERENCEThe information required by Part II and Part III of this Report, to the extent not set forth herein, is incorporated herein by reference from the registrant’s definitive proxy statement relating to the annual meeting of stockholders to be held in 2025, which definitive proxy statement shall be filed with the Securities and Exchange Commission within 120 daysafter the end of the fiscal year to which this Report relates. T1 Energy Inc.TABLE OF CONTENTS PAGEPART IITEM 1.BUSINESS1ITEM 1A.RISK FACTORS7ITEM 1B.UNRESOLVED STAFF COMMENTS24ITEM 1C.CYBERSECURITY24ITEM 2.PROPERTIES24ITEM 3.LEGAL PROCEEDINGS24ITEM 4.MINE SAFETY DISCLOSURES24PART IIITEM 5.MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS ANDISSUER PURCHASES OF EQUITY SECURITIES25ITEM 6.RESERVED25ITEM 7.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OFOPERATIONS26ITEM 7A.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK30ITEM 8.FINANCIAL STATEMENTS AND SUPPLEMENTARY DATAF-1ITEM 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIALDISCLOSURE42ITEM 9A.CONTROLS AND PROCEDURES42ITEM 9B.OTHER INFORMATION42ITEM 9C.D