ArcelorMittal 6-K, filed Oct 19, 2026
ArcelorMittal (MT)
6-K
2026-10-19
For: 2026-10-16
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Added on
October 19, 2026
About this 6-K
ArcelorMittal filed this 6-K on October 19, 2026.
ArcelorMittal filed a Form 6-K attaching a press release notifying share transactions by Lumen Investments S.à r.l., part of its Significant Shareholder structure, under Market Abuse Regulation Article 19(3). AI summary
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 October 19, 2026
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 October 16, 2026, ArcelorMittal published the press release attached hereto as Exhibit 99.1 and hereby incorporated by reference into this report on Form 6-K.
Exhibit Index
| Exhibit No. | Description | ||||
| Notification of share transactions by Lumen Investments S.à r.l | |||||
SIGNATURE
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 19 October 2026
By: /s/ Henk Scheffer
Name: Henk Scheffer
Title: Company Secretary & Group Compliance & Data Protection Officer
Exhibit 99.1
press release
Notification of share transactions by Lumen Investments S.à r.l
Luxembourg, 16 October, 18:00 CET
With reference to Article 19(3) of Regulation (EU) No 596/2014 of the European Parliament and of the Council of 16 April 2014 on market abuse (Market Abuse Regulation), ArcelorMittal announces that notifications of share transactions by Lumen Investments S.à r.l., an entity forming part of the Significant Shareholder structure, are available in the Luxembourg Stock Exchange's electronic database OAM on www.bourse.lu and on ArcelorMittal's website www.arcelormittal.com under Investors > Share Transactions by Management: https://corporate.arcelormittal.com/investors/corporate-governance/share-transactions-by-management.
ENDS
About ArcelorMittal
ArcelorMittal is one of the world’s leading integrated steel and mining companies with a presence in 60 countries and primary steelmaking operations in 14 countries. It is the largest steel producer in Europe, among the largest in the Americas, and has a growing presence in Asia through its joint venture AM/NS India. ArcelorMittal sells its products to a diverse range of customers including the automotive, engineering, construction and machinery industries, and in 2025 generated revenues of $61.4 billion, produced 55.6 million metric tonnes of crude steel and 48.8 million tonnes of iron ore. Our purpose is to produce smarter steels for people and planet. Steels made using innovative processes which use less energy, emit significantly less carbon and reduce costs. Steels that are cleaner, stronger and reusable. Steels for the renewable energy infrastructure that will support societies as they transform through this century. With steel at our core, our inventive people and an entrepreneurial culture at heart, we will support the world in making that change.
ArcelorMittal is listed on the stock exchanges of New York (MT), Amsterdam (MT), Paris (MT), Luxembourg (MT) and on the Spanish stock exchanges of Barcelona, Bilbao, Madrid and Valencia (MTS).
http://corporate.arcelormittal.com/
ArcelorMittal Investor Relations contact information | |||||
General | +44 20 7543 1128 | ||||
Retail | +44 20 3214 2893 | ||||
Bonds/Credit | +33 157 955 035 | ||||
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ArcelorMittal Corporate Communications contact information | |||||
Paul Weigh | |||||
Tel: | +44 20 3214 2419 | ||||
E-mail | press@arcelormittal.com | ||||
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