Century Aluminum SEC Filings
NASDAQ: CENXIndustrialsAluminumUSD
36.76+0.38 (+1.04%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Century Aluminum filing overview
This page lists 60 recent SEC filings by Century Aluminum (CENX), including 33 4, 12 8-K, 5 SCHEDULE 13G/A, 4 10-Q. The latest annual report (10-K) was filed on Mar 3, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 6, 2026.
The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Aug 6, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.
Summary generated from market data by MetaCap's automated system. Methodology
CENX SEC filings
| Filed | Form | Description | Document |
|---|---|---|---|
| Oct 5, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Aug 7, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Aug 6, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Aug 6, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Jul 27, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Jun 17, 2026 | 8-K | Submission of Matters to a Vote of Security Holders | View on EDGAR |
| Jun 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 7, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| May 7, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Apr 24, 2026 | DEF 14A | Definitive proxy statement | View on EDGAR |
| Apr 24, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Mar 27, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 26, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 13, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 13, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 6, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 4, 2026 | SCHEDULE 13D/A | Beneficial ownership report (activist) (amendment) | View on EDGAR |
| Mar 4, 2026 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Mar 4, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 3, 2026 | 8-K | Non-Reliance on Previously Issued Financial Statements or a Related Audit Report | View on EDGAR |
| Mar 3, 2026 | 10-K | Annual report | View on EDGAR |
| Mar 3, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Feb 27, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Feb 25, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Feb 19, 2026 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Feb 11, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Feb 2, 2026 | 8-K | Entry into a Material Definitive Agreement; Completion of Acquisition or Disposition of Assets; Regulation FD Disclosure | View on EDGAR |
| Jan 30, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Jan 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jan 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Nov 21, 2025 | 8-K/A | Amended: Results of Operations and Financial Condition | View on EDGAR |
| Nov 13, 2025 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Nov 12, 2025 | SCHEDULE 13D/A | Beneficial ownership report (activist) (amendment) | View on EDGAR |
| Nov 6, 2025 | 8-K | Completion of Acquisition or Disposition of Assets | View on EDGAR |
| Nov 6, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Oct 22, 2025 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Oct 2, 2025 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Sep 30, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 23, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Aug 14, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Aug 7, 2025 | 8-K | Results of Operations and Financial Condition | View on EDGAR |
| Aug 7, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Jul 24, 2025 | 8-K | Entry into a Material Definitive Agreement; Termination of a Material Definitive Agreement; Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement; Regulation FD Disclosure | View on EDGAR |
| Jul 17, 2025 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Jul 2, 2025 | 4 | OWNERSHIP DOCUMENT | View on EDGAR |
| Jun 20, 2025 | 8-K | Submission of Matters to a Vote of Security Holders | View on EDGAR |
| Jun 18, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 18, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |