ArcelorMittal halts Ukraine steel output after strike
A missile strike on ArcelorMittal’s Kryvyi Rih plant has halted primary steel production while damage and repair timelines are assessed.
Rhea-AI Filing Summary
ArcelorMittal (MT) reported that its Ukrainian steel operation, ArcelorMittal Kryvyi Rih, suffered a ballistic missile strike targeting ironmaking complex #1. Two contractors were killed and two employees injured, who are receiving medical treatment, and the company is prioritising support for affected families and employees.
Primary steel production at the plant has been halted while repairs are undertaken, with other facilities either idled or running at minimum operating levels. This is the second missile strike on the site in five weeks, and specialists are still assessing damage, so it is too early to estimate how long repairs will take. As broader context, in 2025 ArcelorMittal generated revenues of $61.4 billion and produced 55.6 million metric tonnes of crude steel and 48.8 million tonnes of iron ore across its global operations.
Positive
- None.
Negative
- Missile strike halts primary steel production at ArcelorMittal Kryvyi Rih, with other facilities idled or at minimum levels, and no clear timeline yet for completing repairs.
Key Figures
Contractor fatalities in latest strike: 2 contractors
Employee injuries in latest strike: 2 employees
Previous strike fatalities: 2 lives
+5 more
8 metrics
Contractor fatalities in latest strike
2 contractors
Killed in the September 2026 ballistic missile strike on ArcelorMittal Kryvyi Rih
Employee injuries in latest strike
2 employees
Injured in the same missile attack and treated in local hospitals
Previous strike fatalities
2 lives
Lost in a missile strike in mid-August 2026 at ArcelorMittal Kryvyi Rih
2025 Revenue
$61.4 billion
ArcelorMittal consolidated revenues for 2025
2025 crude steel production
55.6 million metric tonnes
Crude steel produced by ArcelorMittal in 2025
2025 iron ore production
48.8 million tonnes
Iron ore produced by ArcelorMittal in 2025
Countries with presence
60 countries
Global presence of ArcelorMittal
Countries with primary steelmaking operations
14 countries
Locations of ArcelorMittal’s primary steelmaking operations
Key Terms
ballistic missile, primary steel production, integrated steel and mining companies, ironmaking complex, +1 more
5 terms
ballistic missile technical
"was again struck by a ballistic missile attack"
A ballistic missile is a weapon that is launched into a high, arching flight path and then follows a largely unpowered trajectory to a distant target, similar to how a thrown ball rises and then falls under gravity. For investors, reports of ballistic missile activity matter because they signal heightened geopolitical or military risk that can quickly affect markets, defense company revenues, insurance costs, energy supplies and investor sentiment.
primary steel production financial
"Primary steel production has currently been halted while repair works"
integrated steel and mining companies financial
"is one of the world’s leading integrated steel and mining companies"
ironmaking complex technical
"The strike focussed on the area of ironmaking complex #1"
minimum operating levels financial
"facilities are either being idled or running at minimum operating levels"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did ArcelorMittal (MT) disclose about the missile strike in Ukraine?
ArcelorMittal disclosed that its Ukrainian operation, ArcelorMittal Kryvyi Rih, was struck by a ballistic missile targeting ironmaking complex #1. Two contractors were killed and two employees injured, and the company is supporting affected families and staff.
How are operations at ArcelorMittal Kryvyi Rih affected by the strike?
ArcelorMittal stated that primary steel production has been halted while repair work is undertaken. The rest of the plant’s facilities are either being idled or running at minimum operating levels until damage assessments are complete.
Can ArcelorMittal estimate when its Kryvyi Rih plant will be repaired?
No. ArcelorMittal said it is too early to provide a credible estimate of how long repair works will take. Specialist teams are assessing the extent of the damage and required work before giving further operational updates.
Has the ArcelorMittal Kryvyi Rih plant been hit before this latest incident?
Yes. ArcelorMittal reported this is the second missile strike in five weeks on the Kryvyi Rih operations. A mid-August strike also claimed two lives, highlighting ongoing operational and safety risks at the site.
What recent financial scale did ArcelorMittal (MT) report for 2025?
ArcelorMittal reported 2025 revenues of $61.4 billion, production of 55.6 million metric tonnes of crude steel, and 48.8 million tonnes of iron ore, reflecting its status as one of the world’s leading integrated steel and mining companies.
AI-generated analysis. How Rhea-AI works. Not financial advice.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
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
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
—————————
Dated September 14, 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 September 14, 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 | ||||
Exhibit 99.1 | ArcelorMittal statement regarding missile strike on its Ukraine plant | ||||
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 14 September 2026
By: /s/ Henk Scheffer
Name: Henk Scheffer
Title: Company Secretary & Group Compliance & Data Protection Officer
Exhibit 99.1
press release
ArcelorMittal statement regarding missile strike on its Ukraine plant
14 September 2026, 14.50 CET
On Saturday, ArcelorMittal’s Ukrainian steel operation, ArcelorMittal Kryvyi Rih, was again struck by a ballistic missile attack. Two contractors were tragically killed in the attack, and two employees injured.
The company’s focus is on supporting the bereaved families and friends, as well as providing support to all employees impacted by the missile strike, with those injured receiving medical attention in local hospitals.
The strike focussed on the area of ironmaking complex #1. Specialist teams are currently assessing the extent of the damage and the work required to resume operations. It is too early at this stage to provide a credible estimate of how long repair works will take.
This is the second missile strike on ArcelorMittal Kryvyi Rih’s operations in five weeks. In mid-August a missile strike claimed two lives. Primary steel production has currently been halted while repair works are undertaken, and the rest of the plant’s facilities are either being idled or running at minimum operating levels.
Further operational updates will be made in due course when complete damage assessments have been undertaken and there is sufficient clarity on the status and timeline for repair works.
Our thoughts are with all our colleagues in Ukraine during this incredibly difficult time.
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.
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.
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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 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 | ||||
ArcelorMittal Corporate Communications contact information | |||||
Paul Weigh | |||||
Tel: | +44 20 3214 2419 | ||||
E-mail | press@arcelormittal.com | ||||
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