0001968487 2026-06-03 2026-06-03 0001968487 8-K/A true 2026-06-03 WORTHINGTON STEEL, INC. OH 001-41830 92-2632000 100 W. Old Wilson Bridge Road Columbus OH 43085 614 840-3462 false false false false Common Shares, without par value WS NYSE false This Form 8-K/A (this “Amendment”) amends the Current Report on Form 8-K filed by Worthington Steel, Inc. (the “Company”) on June 3, 2026 (the “Original 8-K”), which reported, among other things, the completion of the acquisition of Klöckner & Co SE (the “Acquisition”) under Item 2.01. This Amendment is being filed solely to provide the financial statements and pro forma financial information required by Item 9.01 of Form 8-K that were not included in the Original 8-K at the time of its initial filing, as permitted by Items 9.01(a)(3) and 9.01(b)(2) of Form 8-K.Except as set forth herein, no other modifications are being made to the Original 8-K, and this Amendment does not modify or update the disclosures in the Original 8-K. The disclosures in the Original 8-K otherwise remain unchanged.