# EDGAR Filing Document

**Accession Number:** 0001243429
**File Stem:** 0001243429-25-000096
**Filing Date:** 2025-12
**Character Count:** 8397
**Document Hash:** 143e45d967a5ea73d279167ea1474dfe
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001243429-25-000096.hdr.sgml**: 20251216

**ACCESSION NUMBER**: 0001243429-25-000096

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 5

**CONFORMED PERIOD OF REPORT**: 20251216

**FILED AS OF DATE**: 20251216

**DATE AS OF CHANGE**: 20251216

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ArcelorMittal
- **CENTRAL INDEX KEY:** 0001243429
- **STANDARD INDUSTRIAL CLASSIFICATION:** STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35788
- **FILM NUMBER:** 251573855

**BUSINESS ADDRESS:**
- **STREET 1:** 24-26, BOULEVARD D?AVRANCHES
- **STREET 2:** L-1160 LUXEMBOURG
- **CITY:** GRAND DUCHY OF LUXEMBOURG
- **STATE:** N4
- **ZIP:** 00000
- **BUSINESS PHONE:** 35247922151

**MAIL ADDRESS:**
- **STREET 1:** 24-26, BOULEVARD D?AVRANCHES
- **STREET 2:** L-1160 LUXEMBOURG
- **CITY:** GRAND DUCHY OF LUXEMBOURG
- **STATE:** N4
- **ZIP:** 00000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ARCELOR
- **DATE OF NAME CHANGE:** 20030618

**UNITED STATES<br>SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**—————————**

**FORM 6-K**

**REPORT OF FOREIGN PRIVATE ISSUER<br>PURSUANT TO RULE 13a-16 OR 15d-16 <br>UNDER THE SECURITIES EXCHANGE ACT OF 1934**

**—————————**

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 ☒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Form 40-F ☐

&nbsp;&nbsp;&nbsp;&nbsp;

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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**

<u>Exhibit No.</u> <u>Description</u>

---

| | |
|:---|:---|
| <u>[Exhibit 99.1](exhibit991121625.htm)</u> | Press release dated December 12, 2025, ArcelorMittal announces its financial calendar for 2026 |
| <u>[Exhibit 99.](exhibit992121625.htm)[2](exhibit992121625.htm)</u> | Press release dated December 16, 2025, Designated Person Notification |

---

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**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: <u>/s/ Henk Scheffer&nbsp;&nbsp;&nbsp;&nbsp;</u>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Name: Henk Scheffer

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Title: Company Secretary & Group Compliance & Data Protection Officer

## Exhibit 99.1

Exhibit 99.1

![amheader1.jpg](amheader1.jpg)

press release

**ArcelorMittal announces its financial calendar for 2026**

**12 December 2025, 14:00 CET**

ArcelorMittal today announces its financial calendar for 2026.

Earnings results announcements:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• 5 February 2026: Q4 and full year 2025

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• 30 April 2026: Q1 2026

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• 30 July 2026: Q2 and half year 2026

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• 5 November 2026: Q3 2026

Annual General Meeting of Shareholders:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• 5 May 2026

**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 2024 generated revenues of $62.4 billion, produced 57.9 million metric tonnes of crude steel and 42.4 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.

Page 1 of 2

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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** | **ArcelorMittal Investor Relations Contact information** |
| General | +44 20 7543 1128 |
| Retail | +44 20 3214 2893 |
| Bonds/Credit | +33 171 921 026 |
| E-mail | investor.relations@arcelormittal.com |
| **ArcelorMittal Corporate Communications Contact information** | **ArcelorMittal Corporate Communications Contact information** |
| Paul Weigh |  |
| Tel: | +44 20 3214 2419 |
| E-mail | press@arcelormittal.com |

---

Page 2 of 2

## Exhibit 99.2

Exhibit 99.2

![image_0a.jpg](image_0a.jpg)

press release

Designated person notification

**16**<sup>th</sup> **December 2025**

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 Regulations), ArcelorMittal announces that notifications of share transactions by a Designated Person (i.e. Directors or Executive Officers) are available in the Luxembourg Stock Exchange's electronic database OAM on www.bourse.lu and on ArcelorMittal's web site 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 2024 generated revenues of $62.4 billion, produced 57.9 million metric tonnes of crude steel and 42.4 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

Page 1 of 2

------

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/

---

| | |
|:---|:---|
| **Contact information ArcelorMittal Investor Relations** | **Contact information ArcelorMittal Investor Relations** |
| General | +44 20 7543 1128 |
| Retail | +44 20 3214 2893 |
| Bonds/Credit | +33,171,921,026 |
| E-mail | investor.relations@arcelormittal.com |

---

---

| | |
|:---|:---|
| **Contact information ArcelorMittal Corporate Communications** | **Contact information ArcelorMittal Corporate Communications** |
| Paul Weigh | |
| Tel: | +44 20 3214 2419 |
| E-mail | press@arcelormittal.com |

---

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