# EDGAR Filing Document

**Accession Number:** 0002047012
**File Stem:** 0000912282-26-000112
**Filing Date:** 2026-1
**Character Count:** 7029
**Document Hash:** 89b3824ed2aef787ce5cbe02a7be0ea5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000912282-26-000112.hdr.sgml**: 20260123

**ACCESSION NUMBER**: 0000912282-26-000112

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

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260123

**DATE AS OF CHANGE**: 20260123

**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:** 26557809

**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:** TRINA SOLAR (SCHWEIZ) AG
- **CENTRAL INDEX KEY:** 0002047012

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** V8
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **STREET 1:** BIRKENWEG 4
- **CITY:** WALLISELLEN
- **STATE:** V8
- **ZIP:** 8304
- **BUSINESS PHONE:** 41-43-299-6800

**MAIL ADDRESS:**
- **STREET 1:** BIRKENWEG 4
- **CITY:** WALLISELLEN
- **STATE:** V8
- **ZIP:** 8304

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 4)**

**T1 Energy Inc.**

*(Name of Issuer)*

**Common Stock, par value $0.01**

*(Title of Class of Securities)*

**35834F104**

*(CUSIP Number)*

**Catherine Pan-Giordano Esq.**<br>51 W. 52nd Street<br>New York NY 10019<br>(212) 415-9200

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

**01/21/2026**

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

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

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Trina Solar (Schweiz) AG** | Name of reporting person<br>**Trina Solar (Schweiz) AG** | |
| 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>**V8** | Citizenship or place of organization<br>**V8** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**53152664.00** |
| 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>**53152664.00** |
| 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>**53152664.00** | Aggregate amount beneficially owned by each reporting person<br>**53152664.00** | |
| 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>**19.6%** | Percent of class represented by amount in Row (11)<br>**19.6%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** ITEM 13 Calculated based on 270,572,801 shares of common stock of the Issuer outstanding as of January 22, 2026 (inclusive of the shares issued to the Reporting Person).

**Item 1. Security and Issuer**

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

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

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

**Item 4. Purpose of Transaction**

Item 4 of the Schedule 13D filed by the Reporting Person on December 27, 2024 (the "Schedule 13D"), is incorporated by reference herein.  On November 6, 2024, the Issuer announced that the Issuer had entered into a transaction agreement (the "Transaction Agreement") to acquire all the shares of capital stock of T1 G1 Dallas Holding and its related subsidiaries (the "Trina Business Combination"). The Issuer granted certain anti-dilution rights to the Reporting Person in connection with the Trina Business Combination (the "Trina Anti-Dilution Rights").   On October 31, 2025, the Issuer entered into an Amended and Restated Stock Purchase Agreement (the "Stock Purchase Agreement") with certain purchasers pursuant to which, among other things, the Issuer issued 21,504,901 shares of common stock, 1,600,000 shares of the Issuer's Series B Convertible Non-Voting Preferred Stock, par value $0.01 per share (the "Series B Preferred Stock"), and 5,000,000 shares of the Issuers Series B-1 Convertible Non-Voting Preferred Stock, par value $0.01 per share (the "Series B-1 Preferred Stock" and together with the Series B Preferred Stock, the "Outstanding Preferred Stock"), at a price of $10.00 per share of Series B-1 Preferred Stock. In connection with the Stock Purchase Agreement, the Reporting Person informed the Issuer of its intention to subscribe for an additional 4,274,704 shares of common stock at a subscription price of $1.70 per share pursuant to the Trina Anti-Dilution Rights. The subscription for such shares of common stock pursuant to the Trina Anti-Dilution Rights closed on January 21, 2026.

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

**(a)**
19.6%

**(b)**
53,152,664

**(c)**
Subscription of 4,274,704 shares of common stock of the Issuer by the Reporting Person as a result of the Trina Anti-Dilution Rights.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

Transaction Agreement by an among FREYR Battery, Inc. and Trina Solar (Schweiz) AG, dated as of November 6, 2024.

### 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:** Trina Solar (Schweiz) AG

**Signature:** /s/ Vincenzo Costanzelli

**Name/Title:** Chairman of Board of Directors

**Date:** 01/23/2026