# EDGAR Filing Document

**Accession Number:** 0000949157
**File Stem:** 0001628280-25-038894
**Filing Date:** 2025-8
**Character Count:** 2007
**Document Hash:** c51cd7cd1ccf70e7ae12550093cac0b6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-25-038894.hdr.sgml**: 20250807

**ACCESSION NUMBER**: 0001628280-25-038894

**CONFORMED SUBMISSION TYPE**: IRANNOTICE

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250807

**DATE AS OF CHANGE**: 20250807

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CENTURY ALUMINUM CO
- **CENTRAL INDEX KEY:** 0000949157
- **STANDARD INDUSTRIAL CLASSIFICATION:** PRIMARY PRODUCTION OF ALUMINUM [3334]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 133070826
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** IRANNOTICE
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34474
- **FILM NUMBER:** 251194210

**BUSINESS ADDRESS:**
- **STREET 1:** 1 SOUTH WACKER DRIVE
- **STREET 2:** SUITE 1000
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 3126963101

**MAIL ADDRESS:**
- **STREET 1:** 1 SOUTH WACKER DRIVE
- **STREET 2:** SUITE 1000
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

August 7, 2025

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Re: Notice of Disclosure Filed in Quarterly Report on Form 10-Q Under Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Exchange Act

Ladies and Gentlemen:

Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Securities and Exchange Act of 1934, as amended, notice is hereby provided that Century Aluminum Company has made disclosure pursuant to such provisions in its Quarterly Report on Form 10-Q for the quarter ended June 30, 2025, which was filed with the U.S. Securities and Exchange Commission on August 7, 2025.

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| | |
|:---|:---|
| | Respectfully submitted, |
| | **Century Aluminum Company** |
| By: | /s/ PETER TRPKOVSKI |
|  | Peter Trpkovski |
|  | Executive Vice President, Chief Financial Officer and Treasurer<br>(Principal Financial Officer) |

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