Sec Form 4 Filing - Kilde Einar @ T1 Energy Inc. - 2025-03-24

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Kilde Einar 2. Issuer Name and Ticker or Trading Symbol T1 Energy Inc. [ TE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Development Officer (Last) (First) (Middle) 1211 E 4TH ST. 3. Date of Earliest Transaction (MM/DD/YY) 03/24/2025 (Street) AUSTIN, TX78702 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/24/2025 M( 1 ) 22,378 A $ 0.95 22,378 D Common Stock 03/24/2025 D( 1 ) 22,378 D $ 0.95 0 D Common Stock 03/24/2025 M( 1 ) 11,189 A $ 1.14 11,189 D Common Stock 03/24/2025 D( 1 ) 11,189 D $ 1.14 0 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Options ( 2 ) $ 0.95 03/24/2025 M 22,378 07/09/2021( 4 ) 03/30/2025( 5 ) Common Stock 22,378 $ 0 0 D Stock Options ( 2 ) $ 1.14 ( 3 ) 03/24/2025 M 11,189 07/09/2021( 4 ) 03/30/2025( 5 ) Common Stock 11,189 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Kilde Einar 1211 E 4TH ST. AUSTIN, TX78702 Chief Development Officer Signatures /s/ Einar Kilde 03/26/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The stock options were settled in cash as per the terms of the award. For reporting purposes, however, the transaction is deemed to be a simultaneous acquisition and disposition of the underlying shares of Common Stock and is reflected as such in this report. ( 2 )The stock options previously reported in the original Form 3 filed on August 19, 2024 (the "Form 3") were settled in cash, rather than the right to shares of Common Stock, as per the terms of the award following the expiration of a lock-up.. ( 3 )Due to an administrative error, the exercise price of this security was previously reported as $1.114 in the Form 3. ( 4 )Due to an administrative error, the exercise date of this security was previously reported as vesting in one-thirds (1/3) annually over three years beginning on the grant date in 2021 in the Form 3 rather than immediately upon grant. ( 5 )Due to an administrative error, the expiration date of this security was previously reported as January 29, 2026 on the Form 3.

Remarks: Exhibit List Exhibit 24.1 - Power of Attorney

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.