CENX CENTURY ALUMINUM COcompanySEC Filings & Insider Trading Activity 2026
Latest CENTURY ALUMINUM CO (CENX) SEC EDGAR filings in 2026 — including the most recent 10-K annual report filed on March 3, 2026, a 10-Q quarterly report filed on November 6, 2025, an 8-K current report filed on March 3, 2026. SignalX aggregates every new 10-K annual report, 10-Q quarterly report, 8-K current report, and Form 4 insider transaction for CENTURY ALUMINUM CO (CENX) (SEC CIK 949157), with AI-powered section-by-section summaries updated daily.
Latest 2026 SEC Filing Dates
AI 10-K Annual Report AnalysisLatest 10-K (2025-12-31)
Business Overview
- • Core business model: Primary aluminum production with significant electric power cost exposure
- • Emphasis on managing market-based power agreements expiring 2026-2036, including LME-linked variable and fixed power rates
Risk Factors
- • Regulatory risk: One Big Beautiful Bill Act 2025 phases out Section 45X tax credit starting 2031, reducing credit 25% yearly until 2034
- • Macroeconomic risk: Power supply contracts extend through 2036, exposing to energy price volatility and long-term fixed obligations
Management Discussion & Analysis
- • Revenue impact from Hawesville facility sale: $200 million cash received plus 6.8% equity in Terawulf affiliate
- • Noted loss of approx. 84,000 tonnes alumina production in 2023 at Jamalco due to equipment failure, impacting gross margin by $30.4M
AI 10-Q Quarterly Report AnalysisLatest 10-Q (2025-09-30)
Risk Factors
- • New risk: European natural gas supply uncertainty due to reduced Russian imports impacting Vlissingen and Grundartangi operations
- • Most material update: Increased net loss on forward and derivative contracts (nonaffiliates) by $14.6 million Q3 2025 vs Q2 2025 due to LME hedging price fluctuations
AI 8-K Current Report AnalysisRecent 8-K Filings
Item 4.02: Non-Reliance on Previously Issued Financial Statements
- • Q4 2025 earnings release disclosed via 8-K but filed under Reg FD/Item 7.01 — not subject to Section 18 liability
- • Standard legal disclaimer limiting company's liability exposure on the earnings disclosure
Annual Reports Archive10-K
AI-powered analysis of CENTURY ALUMINUM CO (CENX) 10-K annual reports filed with SEC EDGAR.
Quarterly Reports Archive10-Q
AI-powered analysis of CENTURY ALUMINUM CO (CENX) 10-Q quarterly reports filed with SEC EDGAR.
Recent 8-K FilingsCurrent Reports
AI-powered analysis of CENTURY ALUMINUM CO (CENX) 8-K current reports disclosing material events.
Financial SummaryXBRL
| FY2022 | FY2023 | FY2024 | FY2025 | |
|---|---|---|---|---|
| Profitability | ||||
| Revenue | — | $2.2B | $2.2B | $2.5B |
| Gross Profit | $46.7M | $91.9M | $185.0M | $256.4M |
| Operating Income | — | $31.8M | $121.4M | $158.1M |
| Net Income | -$14.1M | -$43.1M | $336.8M | $41.8M |
| Gross Margin | — | 4.2% | 8.3% | 10.1% |
| Op. Margin | — | 1.5% | 5.5% | 6.3% |
| Net Margin | — | -2.0% | 15.2% | 1.7% |
| Balance Sheet | ||||
| Total Assets | — | $1.8B | $1.9B | $2.3B |
| Equity | — | $355.6M | $694.4M | $805.6M |
| ROE | — | -12.1% | 48.5% | 5.2% |
Source: XBRL financial data from CENTURY ALUMINUM CO (CENX) 10-K filings on SEC EDGAR. All figures in USD. Key metrics include revenue, net income, gross profit, gross profit margin, operating income, EPS (diluted), total assets, stockholders' equity, return on equity (ROE), operating cash flow, and capital expenditure.
Latest 2026 SEC Filings — 10-K, 10-Q, 8-K & Form 4
| Form | Filing Date | Period | Analysis | SEC |
|---|---|---|---|---|
10-K | Mar 3, 2026 | Dec 31, 2025 | Analysis | |
8-K | Mar 3, 2026 | — | Analysis | — |
8-K | Feb 19, 2026 | — | — | |
8-K | Feb 2, 2026 | — | — | |
10-Q | Nov 6, 2025 | Sep 30, 2025 | Analysis | |
10-Q | Aug 7, 2025 | Jun 30, 2025 | — | |
10-Q | May 8, 2025 | Mar 31, 2025 | — | |
10-K | Mar 3, 2025 | Dec 31, 2024 | — | |
10-Q | Nov 4, 2024 | Sep 30, 2024 | — | |
10-Q | Aug 8, 2024 | Jun 30, 2024 | — | |
10-Q | May 1, 2024 | Mar 31, 2024 | — | |
10-K | Mar 15, 2024 | Dec 31, 2023 | — | |
10-Q | Nov 8, 2023 | Sep 30, 2023 | — | |
10-Q | Aug 9, 2023 | Jun 30, 2023 | — | |
10-Q | May 9, 2023 | Mar 31, 2023 | — | |
10-K | Feb 27, 2023 | Dec 31, 2022 | — | |
10-Q | Nov 7, 2022 | Sep 30, 2022 | — | |
10-Q | Aug 9, 2022 | Jun 30, 2022 | — | |
10-Q | May 2, 2022 | Mar 31, 2022 | — | |
10-K | Feb 25, 2022 | Dec 31, 2021 | — | |
10-Q | Nov 5, 2021 | Sep 30, 2021 | — | |
10-Q | Aug 5, 2021 | Jun 30, 2021 | — | |
10-Q | May 7, 2021 | Mar 31, 2021 | — | |
10-K | Mar 4, 2021 | Dec 31, 2020 | — | |
10-Q | Nov 5, 2020 | Sep 30, 2020 | — |
Frequently Asked Questions
What are the latest CENX SEC filings in 2026?
CENTURY ALUMINUM CO (CENX) has filed a 10-K annual report on March 3, 2026, a 10-Q quarterly report on November 6, 2025, an 8-K current report on March 3, 2026 with the SEC. SignalX tracks every new SEC EDGAR filing daily, including 10-K, 10-Q, 8-K, and Form 4 insider transactions, with AI-powered summaries of key sections.
When did CENX file its most recent 10-K annual report?
CENTURY ALUMINUM CO (CENX) filed its most recent 10-K annual report on March 3, 2026. The 10-K includes audited financial statements, business overview, risk factors, and management discussion, all available on SignalX with AI-generated summaries and XBRL financial data.
How do I view CENX 10-Q quarterly reports?
CENTURY ALUMINUM CO (CENX)'s most recent 10-Q quarterly report was filed on November 6, 2025. SignalX displays every CENX 10-Q with AI-generated summaries of the MD&A (Management Discussion & Analysis) and Risk Factors sections, plus links to the original SEC EDGAR document.
What 8-K current reports has CENX filed recently?
CENTURY ALUMINUM CO (CENX)'s most recent 8-K was filed on March 3, 2026. 8-K filings disclose material corporate events such as earnings releases, executive changes, mergers, and other significant developments. SignalX surfaces each 8-K with item-level summaries so you can quickly see what happened.
Where can I find CENX insider trading activity (Form 4)?
SignalX aggregates every CENX Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.
How often does CENX file with the SEC?
CENTURY ALUMINUM CO (CENX) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new CENX filing with AI-powered analysis.
What is the difference between 10-K, 10-Q, and 8-K SEC filings?
A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs — such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for CENTURY ALUMINUM CO (CENX).
What is CENX's SEC CIK number?
CENTURY ALUMINUM CO (CENX)'s SEC CIK (Central Index Key) number is 949157. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 949157 to look up all CENX filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.
Where can I find CENX return on equity (ROE) and financial data?
SignalX extracts XBRL financial data from CENTURY ALUMINUM CO (CENX) 10-K annual filings, including revenue, net income, gross profit, operating income, EPS, total assets, stockholders' equity, and operating cash flow. Return on equity (ROE) can be derived from net income divided by stockholders' equity. Multi-year financial trends are displayed in the Financial Summary table above.
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