# EDGAR Filing Document

**Accession Number:** 0001992243
**File Stem:** 0001213900-26-020794
**Filing Date:** 2026-2
**Character Count:** 16108
**Document Hash:** 51d2eb858f9a902b128a291081fe65db
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-020794.hdr.sgml**: 20260226

**ACCESSION NUMBER**: 0001213900-26-020794

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260226

**DATE AS OF CHANGE**: 20260226

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** T1 Energy Inc.
- **CENTRAL INDEX KEY:** 0001992243
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 933205861
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-94349
- **FILM NUMBER:** 26688643

**BUSINESS ADDRESS:**
- **STREET 1:** 1211 E 4TH ST.
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78702
- **BUSINESS PHONE:** 409-599-5706

**MAIL ADDRESS:**
- **STREET 1:** 1211 E 4TH ST.
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78702

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FREYR Battery, Inc. /DE/
- **DATE OF NAME CHANGE:** 20230901
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Alussa Energy Sponsor LLC
- **CENTRAL INDEX KEY:** 0001781385

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** PO BOX 500, 71 FORT STREET
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY11106
- **BUSINESS PHONE:** 3459494900

**MAIL ADDRESS:**
- **STREET 1:** PO BOX 500, 71 FORT STREET
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY11106

## Ex-99.A

**ANNEX A**

**Alussa Energy Sponsor LLC**

The Sponsor is a Delaware limited liability company with its registered office at 251 Little Falls Drive, Wilmington, Delaware 19808.

During the past five years, the Sponsor has not been (i) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (ii) a party to any judicial or administrative proceedings (except for matters that were dismissed without sanction or settlement) that resulted in a judgment, decree or final order enjoining the Sponsor from future violations of, or prohibiting activities subject to, U.S. federal or state securities laws, or a finding of any violation of U.S. federal or state securities laws.

The directors and executive officers of the Sponsor and their respective positions, principal occupation and business addresses are identified below:

---

| | | |
|:---|:---|:---|
| **Name and Present Position with the Sponsor** | **Citizenship** | **Principal Occupation / Business Address(es)** |
| William Richard Anderson<br> Managing Member | United States of America | Chief Executive Officer and Director, Coastline Exploration Limited, 3401 Allen Parkway, Houston, Texas 77019 <br>Chairman and Director, Alussa Energy Acquisition Corp. II, 1001 S Capital of Texas Hwy Building L, Suite 250, Austin, Texas 78746<br>Managing Member, Alussa Energy Sponsor LLC, 251 Little Falls Drive, Wilmington, Delaware 19808<br>Director, T1 Energy Inc., 1211 E 4th St., Austin, Texas 78702  |

---

## Exhibit 99.10

**Exhibit 99.10**

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby confirm the agreement by and among them to the joint filing on behalf of them of a Statement on Schedule 13D (including any and all amendments thereto) with respect to the shares of Common Stock of T1 Energy Inc., a Delaware corporation (f/k/a FREYR Battery, a corporation in the form of a public limited liability company (société anonyme) incorporated under the laws of Luxembourg), with registered office at 1211 E 4th St., Austin, Texas 78702, and that this agreement may be included as an exhibit to such joint filing.

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;Date: February 26, 2026 | ALUSSA ENERGY SPONSOR LLC | ALUSSA ENERGY SPONSOR LLC |
|  | By: | /s/ William Richard Anderson |
|  | Name: | William Richard Anderson |
|  | Title: | Managing Member |
| Date: February 26, 2026 | WILLIAM RICHARD ANDERSON | WILLIAM RICHARD ANDERSON |
|  | By: | /s/ William Richard Anderson |
|  | Name: | William Richard Anderson |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 2)**

**T1 Energy Inc.**

*(Name of Issuer)*

**Common Stock, par value $0.01 per share**

*(Title of Class of Securities)*

**35834F104**

*(CUSIP Number)*

**W. Richard Anderson**<br>251 Little Falls Drive<br>Wilmington DE 19808<br>1 (302) 421-6100

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**12/10/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **35834F104** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Alussa Energy Sponsor LLC** | Name of reporting person<br>**Alussa Energy Sponsor LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**11151357.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**11151357.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**11151357.00** | Aggregate amount beneficially owned by each reporting person<br>**11151357.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.0%** | Percent of class represented by amount in Row (11)<br>**4.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Row (13): Based on 277,537,318 shares of Common Stock (the "Common Stock") of T1 Energy Inc. (the "Issuer"), consisting of (i) 270,572,801 shares of Common Stock outstanding as of January 22, 2026, and (ii) 6,964,517 shares of Common Stock issuable upon the exercise of the warrants (the "Warrants") beneficially owned by Alussa Energy Sponsor LLC (the "Sponsor").

Rows (7), (9) and (11): The aggregate number of shares of Common Stock of the Issuer, that may be deemed beneficially owned by the Sponsor, is comprised of the following: (i) 4,186,840 shares of Common Stock, and (ii) 6,964,517 shares of Common Stock issuable upon the exercise of Warrants.

| **CUSIP No.** | **35834F104** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**William Richard Anderson** | Name of reporting person<br>**William Richard Anderson** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**11718357.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**11718357.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**11718357.00** | Aggregate amount beneficially owned by each reporting person<br>**11718357.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.2%** | Percent of class represented by amount in Row (11)<br>**4.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Row (13): Based on 278,104,318 shares of Common Stock of the Issuer consisting of (i) 270,572,801 shares of Common Stock outstanding as of January 22, 2026, (ii) 6,964,517 shares of Common Stock issuable upon the exercise of the Warrants that Mr. Anderson may be deemed to beneficially own by virtue of being the managing member of the Sponsor, (iii) 50,000 shares of Common Stock underlying restricted stock units that vested immediately upon grant directly held by Mr. Anderson and (iv) 517,000 shares of Common Stock issuable upon the exercise of the Warrants directly held by Mr. Anderson.

Rows (7), (9) and (11): The aggregate number of shares of Common Stock of the Issuer, that may be deemed beneficially owned by William Richard Anderson is comprised of the following: (i) 4,186,840 shares of Common Stock held by the Sponsor, (ii) 6,964,517 shares of Common Stock issuable upon the exercise of Warrants held by the Sponsor, (iii) 50,000 shares of Common Stock underlying restricted stock units that vested immediately upon grant directly held by Mr. Anderson and (iv) 517,000 shares of Common Stock issuable upon the exercise of Warrants directly held by Mr. Anderson.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, par value $0.01 per share

**(b) Name of Issuer:**
T1 Energy Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1211 E 4th St., Austin, TX, 78702

This Amendment No. 2 (this "Amendment No. 2") supplements and amends the Schedule 13D filed on July 19, 2021 (collectively, the "Schedule 13D"), by certain of the Reporting Persons (as defined below), relating to the shares of Common Stock (the "Shares") of T1 Energy Inc., a Delaware corporation (f/k/a FREYR Battery, a corporation in the form of a public limited liability company (societe anonyme) incorporated under the laws of Luxembourg), with registered office at 1211 E 4th St., Austin, Texas 78702 (the "Issuer"). Each Item below amends and supplements the information disclosed under the corresponding Item of the Schedule 13D. Except as specifically provided herein, this Amendment No. 2 does not modify any of the information previously reported in the Schedule 13D. Unless otherwise indicated herein, capitalized terms used but not defined in this Amendment No. 2 shall have the same meanings herein as are ascribed to such terms in the Schedule 13D.

**Item 4. Purpose of Transaction**

Item 4 is hereby amended and supplemented with the following:

On September 5, 2025, as part of the partial conversion of its $80.0 million seven percent (7%) unsecured convertible note due in five (5) years (the "Convertible Note Instrument"), the Company issued 12,521,653 Shares underlying the Convertible Note Instrument to Trina Solar (Schweiz) AG, an entity organized under the laws of Switzerland ("Trina"). Following the approval of the Company's stockholders on December 3, 2025, the remaining balance of the Convertible Note Instrument converted into 17,918,460 Shares (the "Second Conversion Shares") and such shares were issued to Trina on December 10, 2025.

After giving effect to the issuance of the Second Conversion Shares described herein, as of December 10, 2025, the Reporting Persons ceased to be the beneficial owner of more than five percent of the Shares.

**Item 5. Interest in Securities of the Issuer**

**(a)**
Item 5(a) is hereby amended and restated in its entirety as follows:

Items 7-11 of the cover pages of this Schedule 13D are incorporated herein by reference.

Beneficial ownership of the Shares is being reported hereunder solely because the Reporting Persons may be deemed to have beneficial ownership of such shares as a result of certain provisions contained in the Transaction Agreements described in this Schedule 13D.

The Reporting Persons disclaim beneficial ownership of the securities reported herein, and neither the filing of this Schedule 13D nor any of its content shall be construed as an admission of such beneficial ownership. Membership in any group is also hereby expressly disclaimed.

As of the date hereof, the Sponsor may be deemed to be the beneficial owner of 11,151,357 Shares of the Issuer, representing approximately 4.0% of the issued and outstanding Shares of the Issuer.

As of the date hereof, Mr. Anderson may be deemed to be the beneficial owner of 11,718,357 Shares of the Issuer (including the 11,151,357 Shares held by the Sponsor), representing approximately 4.2% of the issued and outstanding Shares of the Issuer. Mr. Anderson disclaims beneficial ownership of the Shares held by the Sponsor, except to the extent of his pecuniary interest therein.

Except as set forth in this Item 5, to the knowledge of the Reporting Persons, none of the persons named in Annex A beneficially owns any shares in the Issuer.

**(b)**
Item 5(b) is hereby amended and restated in its entirety as follows:

Items 7-11 of the cover pages of this Schedule 13D are incorporated herein by reference.

As of the date hereof, the Sponsor may be deemed to have the sole power to vote or direct the vote, and sole power to dispose or direct the disposition of, 11,151,357 Shares of the Issuer, representing approximately 4.0% of the issued and outstanding Shares of the Issuer.

As of the date hereof, Mr. Anderson may be deemed to have the sole power to vote or direct the vote, and sole power to dispose or direct the disposition of, 11,718,357 Shares of the Issuer (including the 11,151,357 Shares held by the Sponsor), representing approximately 4.2% of the issued and outstanding Shares of the Issuer.

**(c)**
Item 5(c) is hereby amended and restated in its entirety as follows: Except as described in this Schedule 13D, to the knowledge of the Reporting Persons, no transactions in the class of securities reported have been effected during the past 60 days by the Reporting Persons or any person named in Annex A.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Alussa Energy Sponsor LLC

**Signature:** /s/ William Richard Anderson

**Name/Title:** William Richard Anderson/Managing Member

**Date:** 02/26/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** William Richard Anderson

**Signature:** /s/ William Richard Anderson

**Name/Title:** William Richard Anderson

**Date:** 02/26/2026