ArcelorMittal Form 6-K Filing

This filing is an SEC Form 6-K report for ArcelorMittal, dated May 19, 2026. It includes a Sixth Supplemental Indenture, dated May 19, 2026, concerning the issuance of U.S.$1,000,000,000 aggregate principal amount of 5.375% Notes due 2036. This supplemental indenture is an addition to the Senior Indenture dated June 1, 2015. The report details the terms and conditions of the new notes, including interest rates, maturity date, redemption provisions (at the company's option, for taxation reasons, and upon a change of control), and payment procedures. It also outlines the roles of the Trustee and Securities Administrator, governing law (New York), and jurisdiction. The filing incorporates by reference several exhibits, including the Sixth Supplemental Indenture itself, the form of the Global Note due 2036, and legal opinions regarding the validity of the debt securities under Luxembourg and New York law.