T1 Energy Inc.: prospectus supplement for resale of 7,246,377 shares

What happened

• On Oct 6, 2026, T1 Energy Inc. filed a prospectus supplement under its automatic shelf registration statement on Form S-3ASR (File No. 333-292857) covering the resale of 7,246,377 shares of its common stock by Evervolt Green Energy Holding Pte, Ltd. (Evervolt).
• The shares were issued, or are issuable subject to certain beneficial ownership limitations, to Evervolt as part of the consideration for the Company’s purchase of certain intellectual property and related assets from Evervolt under an intellectual property purchase agreement dated Jul 28, 2026.
• The Company filed this current report to provide the legal opinion as to the validity of the shares covered by the prospectus supplement; that opinion is attached as Exhibit 5.1 and is incorporated by reference. The filing of the prospectus supplement is not itself a sale of securities and does not mean Evervolt will sell any shares.

Key details

• 7,246,377 shares of common stock are covered by the prospectus supplement.
• Registration statement filed earlier on Jan 21, 2026 (Form S-3ASR, File No. 333-292857).
• IP purchase agreement between the Company and Evervolt dated Jul 28, 2026.
• The prospectus supplement states no proceeds to the Company if Evervolt sells any covered shares.

Why it may matter

• Reported item: Item 8.01 (Other events) — the Company filed a prospectus supplement and provided a legal opinion regarding the validity of the shares covered by that supplement. Item 9.01 lists related exhibits.
• This filing does not show why the insider traded or why the company acted.