Sec Form 4 Filing - Bentzen Andreas @ T1 Energy Inc. - 2026-06-23

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

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1. Name and Address of Reporting Person Bentzen Andreas 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 Technology Officer (Last) (First) (Middle) 1211 E 4TH ST. 3. Date of Earliest Transaction (MM/DD/YY) 06/23/2026 (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 06/23/2026 M 25,000 ( 1 ) A 25,000 D Common Stock 06/23/2026 F 11,850 ( 2 ) D $ 9.24 13,150 ( 3 ) D Common Stock 1,200 ( 5 ) I By Self as owner of Beacon Group AS

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 Restricted Stock Units (RSUs) ( 1 ) 06/23/2026 M 25,000 ( 4 ) ( 4 ) Shares of Common Stock 25,000 ( 1 ) 50,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Bentzen Andreas 1211 E 4TH ST. AUSTIN, TX78702 Chief Technology Officer Signatures /s/ Harold Callo Sanchez, as Attorney-in-Fact 06/25/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This transaction represents the vesting on June 23, 2026 of 25,000 Restricted Stock Units ("RSUs") granted on June 23, 2025 under the Company's 2021 Equity Incentive Plan (as amended and restated on April 22, 2024) and reported on the Form 4 filed June 25, 2025. This relates to the vesting of the first of three equal annual installments (further details in Note 4 below). Each RSU represents the right to receive one share of Common Stock. These 25,000 RSUs were settled in shares of Common Stock on June 23, 2026. ( 2 )This transaction represents 11,850 shares of Common Stock withheld for tax obligations in connection with the settlement on June 23, 2026 of 25,000 RSUs that vested on June 23, 2026 (the first of three equal annual installments). The vesting of those 25,000 RSUs is described in Note 1 above. ( 3 )The 13,150 shares of Common Stock beneficially owned directly following the reported transactions reflects 25,000 shares of Common Stock acquired upon settlement of the RSUs that vested on June 23, 2026 (Note 1 above), less 11,850 shares withheld for tax upon settlement (Note 2 above). ( 4 )The RSUs reported on the Form 4 filed June 25, 2025 were granted for a total of 75,000 RSUs vesting in three equal annual installments: one-third vested on June 23, 2026; one-third will vest on June 23, 2027; and one-third will vest on June 23, 2028. Following the vesting and settlement of the first installment reported herein, 50,000 RSUs remain outstanding. ( 5 )Consists of 1,200 shares of Common Stock held by Beacon Group AS, as reported on the reporting person's Form 3 filed January 10, 2024. The reporting person is the owner of Beacon Group AS and disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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).

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