T1 Energy filed a prospectus supplement to register the resale of common stock issuable upon conversion of $50 million in Convertible Senior Notes due 2031 held by a selling stockholder. The registration covers up to 13,440,860 shares, including potential make-whole shares, assuming physical settlement. The filing provides a legal opinion on the validity of these shares but does not constitute an issuance or sale by T1 Energy, meaning the company will receive no proceeds from any future sales by the stockholder. T1 Energy Inc. operates in the energy sector.