T1 Energy Inc.

From time to time, we may be involved in litigation relating to claims arising in the ordinary course of our business. To the knowledge of our management, there are no material litigation, claims, or actions currently pending or threatened against us, any of our officers, or directors in their capacity as such, or against any of our property, except as described below.

On June 5, 2025 and July 31, 2025, we received notices from U.S. Customs and Border Protection (“CBP”) relating to potential customs duties on goods imported in 2024 by one of the entities we acquired in the Trina Business Combination (the “Notices”). We have engaged with CBP on these Notices and explained why we believe they were without legal or factual merit. In March 2026, we received bills from CBP for alleged antidumping duties on goods imported in 2024 by the same entity acquired in the Trina Business Combination. It is unclear what, if any, connection these bills have with the Notices previously received. At this point, the bills received total approximately $25.4 million. The Company is engaging with CBP, through outside counsel, to correct what it believes is the erroneous application of duties, but it is not possible at this time to predict the duration, outcome, or impact of these matters, which the Company maintains would ultimately be subject to indemnification pursuant to the Trina Business Combination.

In November 2025, the Company and a Company executive and Board member (the “Individual”) received grand jury subpoenas from the DOJ, which request the production of documents relating to the sale of the Company’s stock in the second half of 2023 on the account of the Individual, who was a director of the Company at that time. Shortly thereafter, the Company received a voluntary document request from the SEC seeking similar information. The Company believes that the relevant trades relate to stock that the Individual pledged as collateral against a personal loan, which was approved in accordance with the Company’s insider trading policy. The Company is cooperating with both the DOJ and SEC, and it is not possible at this time to predict the duration, outcome or impact of such matters.

RWE Investco EPC MGMT, LLC filed an action, dated December 19, 2025 and served January 7, 2026, against a subsidiary of the Company and TUS, in the Superior Court of the State of California for the County of San Francisco (the “Lawsuit”) alleging breach of contract claims relating to a long-term offtake agreement. We contest the allegations and will vigorously defend against the Lawsuit and pursue all legal remedies available to the Company, including but not limited to the Cross-Complaint filed in January 2026 asserting claims against RWE Investco EPC MGMT, LLC and seeking damages, and a complaint filed in March 2026 against RWE Aktiengesellschaft in the Supreme Court of the State of New York for the County of New York, seeking to enforce their unconditional guaranty of RWE Investco EPC MGMT, LLC’s payment obligations under the long-term offtake agreement for up to $100 million.

First Solar, Inc. initiated patent infringement proceedings in early 2026 against numerous companies in the solar industry, including a district court proceeding against T1 Energy Inc. and T1 G1 Dallas Midco Inc., alleging that such companies are and have been willfully infringing U.S. Patent No. 9,130,074 (the “‘074 Patent”) by, among other actions, importing certain solar cells. Separately, also in early 2026, the International Trade Commission published a Notice of Receipt of Complaint filed by First Solar, Inc. alleging that multiple proposed respondents, including T1 Energy Inc. and T1 G1 Dallas Solar Module LLC, are knowingly and intentionally infringing the ’074 Patent by, among other actions, importing certain solar cells. In that proceeding, First Solar Inc. has requested that the International Trade Commission issue a general exclusion order prohibiting the importation of products that infringe the ’074 Patent, which First Solar, Inc. alleges includes TOPCon solar cells, as well as cease-and-desist orders to all respondents with respect to the importation, sale, marketing, or distribution of such products. We contest the allegations by First Solar, Inc. and will vigorously defend against them and pursue all legal remedies available to the Company.

We believe, taking into consideration our indemnities, defenses, insurance and reserves, the ultimate resolution of these matters will not have a material impact on our financial position, results of operations or cash flows. However, the ultimate outcome of these matters cannot be determined at this time, and we cannot guarantee that we will be successful in contesting the Notices or the Lawsuit, or that we will not need to accrue or pay additional amounts in the future.