UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
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Dated December 16, 2025
Commission File Number: 001-35788
ARCELORMITTAL
(Translation of registrant’s name into English)
24-26, Boulevard d’Avranches
L-1160 Luxembourg
Grand Duchy of Luxembourg
(Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F ☒ Form 40-F ☐
On December 12, 2025 and December 16, 2025, ArcelorMittal published the press releases attached hereto as Exhibit 99.1 and Exhibit 99.2 and hereby incorporated by reference into this report on Form 6-K.
Exhibit Index
| Exhibit No. | Description | ||||
| Press release dated December 12, 2025, ArcelorMittal announces its financial calendar for 2026 | |||||
| Press release dated December 16, 2025, Designated Person Notification | |||||
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
ARCELORMITTAL
Date 16 December 2025
By: /s/ Henk Scheffer
Name: Henk Scheffer
Title: Company Secretary & Group Compliance & Data Protection Officer