Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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

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1. Name and Address of Reporting Person * Calio Joseph Evan 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 Financial Officer (Last) (First) (Middle) 1211 E 4TH ST. 3. Date of Earliest Transaction (Month/Day/Year) 06/13/2025 (Street) AUSTIN, TX 78702 4. If Amendment, Date Original Filed (Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 06/13/2025 M 422,475(1) A (1) 1,602,937 D Common Stock 01/01/2026 M 500,000(2) A (2) 2,102,937 D Common Stock 03/30/2026 F 212,137(3) D $2.58 1,890,800 D Common Stock 03/13/2026 F 195,775(4) D $1.39 1,695,025 D Common Stock 03/13/2026 F 210,688(5) D $6.68 1,484,337(6) D

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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)

06/13/2025

M

422,475

(7)

(7)

Shares of Common Stock

422,475

$ 0 (1)

844,952(7)

D

Restricted Stock Units (RSUs)

(2)

01/01/2026

M

500,000

(8)

(8)

Shares of Common Stock

500,000

$ 0 (2)

500,000(8)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Calio Joseph Evan 1211 E 4TH ST. AUSTIN, TX 78702			Chief Financial Officer

Signatures

/s/ Harold Callo Sanchez, as Attorney-in-Fact		04/02/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	This transaction represents the vesting on June 13, 2025 of 422,475 Restricted Stock Units ("RSUs") granted on June 13, 2024 under the Company's 2021 Equity Incentive Plan (as amended and restated on April 22, 2024) and reported on the Form 4 filed August 9, 2024. This relates to the vesting of the first of three equal annual installments (further details in Note 7 below). Each RSU represents the right to receive one share of Common Stock. These 422,475 RSUs were settled in shares of Common Stock on March 13, 2026.
(2)	This transaction represents the vesting on January 1, 2026 of 500,000 RSUs granted on January 1, 2025 under the Company's 2021 Equity Incentive Plan (as amended and restated on April 22, 2024) and reported on the Form 4 filed January 3, 2025. This relates to the vesting of the second of three equal annual installments (further details in Note 8 below). Each RSU represents the right to receive one share of Common Stock. These 500,000 RSUs were settled in shares of Common Stock on March 13, 2026.
(3)	This transaction represents 212,137 shares of Common Stock withheld for tax obligations in connection with the settlement on March 30, 2026 of 500,000 RSUs that vested on January 1, 2025 (the first of three equal annual installments). Those 500,000 RSUs had previously vested as reported on the Form 4 filed on January 3, 2025, however, settlement did not occur until March 30, 2026. Because the vesting of those 500,000 RSUs was previously reported, only the tax withholding is reported on this Form 4.
(4)	This transaction represents 195,775 shares of Common Stock withheld for tax obligations in connection with the settlement on March 13, 2026 of 422,475 RSUs that vested on June 13, 2025 (the first of three equal annual installments). The vesting of those 422,475 RSUs is described in Note 1 above.
(5)	This transaction represents 210,688 shares of Common Stock withheld for tax obligations in connection with the settlement on March 13, 2026 of 500,000 RSUs that vested on January 1, 2026 (the second of three equal annual installments). The vesting of those 500,000 RSUs is described in Note 2 above.
(6)	The 1,484,337 shares of Common Stock beneficially owned following the reported transactions reflects: (i) 1,180,462 shares reported on the Form 4 filed January 3, 2025; plus (ii) 422,475 shares acquired upon vesting of RSUs on June 13, 2025 and subsequently settled on March 13, 2026 (Note 1 above); plus (iii) 500,000 shares acquired upon vesting of RSUs on January 1, 2026 and subsequently settled on March 13, 2026 (Note 2 above); less (iv) 212,137 shares withheld for tax upon settlement of RSUs on March 30, 2026 (Note 3 above); less (v) 195,775 shares withheld for tax upon settlement of RSUs on March 13, 2026 (Note 4 above); less (vi) 210,688 shares withheld for tax upon settlement of RSUs on March 13, 2026 (Note 5 above).
(7)	The RSUs reported on the Form 4 filed August 9, 2024 were granted for a total of 1,267,427 RSUs vesting in three equal annual installments: one-third vested on June 13, 2025; one-third will vest on June 13, 2026; and the remaining one-third will vest on June 13, 2027. Following the vesting and settlement of the first installment reported herein, 844,952 RSUs remain outstanding.
(8)	The RSUs reported on the Form 4 filed January 3, 2025 were granted for a total of 1,500,000 RSUs vesting in three equal annual installments: one-third vested on January 1, 2025; one-third vested on January 1, 2026; and the remaining one-third will vest on January 1, 2027. That filing reported 500,000 shares acquired in Table I and 1,000,000 RSUs in Table II, representing the unvested second and third installments. Following the vesting and settlement of the second installment reported herein, 500,000 RSUs remain outstanding and are reported in Table II, representing the third and final installment of the grant dated January 1, 2025. No Table II disposition was reported for the first installment because those RSUs were converted to shares upon vesting on January 1, 2025 and reported in Table I on the prior filing, not in Table II.

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