6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Dated April 1, 2021

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 ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

On April 1, 2021, ArcelorMittal published the press release attached hereto as Exhibit 99.1 and hereby incorporated by reference into this report on Form 6-K.

Exhibit List

Exhibit No.	Description
Exhibit 99.1	Press release, dated April 1, 2021, Société Générale SA shareholding notification

Exhibit Index

Exhibit No.	Description
Exhibit 99.1	Press release, dated April 1, 2021, Société Générale SA shareholding 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 1 April 2021

By: /s/ Henk Scheffer

Name:	Henk Scheffer
Title:	Company Secretary & Group Compliance & Data Protection Officer

EX-99.1

Exhibit 99.1

press release

Société Générale SA shareholding notification

01 April 2021, 15:15 CET

ArcelorMittal (‘the Company’) announces that Société Générale SA has notified it on 31 March 2021 of an increase from 4.97% to 5.23% on 26 March 2021in actual and potential shareholding (voting rights) in ArcelorMittal.

This notification is available in the Luxembourg Stock Exchange’s OAM electronic database on www.bourse.lu and on the Company’s website, corporate.arcelormittal.com under ‘Investors - Corporate Governance - Shareholding structure’.

This notification is published in reference to the Luxembourg law and the Grand Ducal regulation of 11 January 2008, on transparency requirements for issuers of securities (‘Transparency Law’) in view of a shareholding notification going above or below the 5% of voting rights threshold.

ENDS