Welcome to our dedicated page for Century Alum Co SEC filings (Ticker: CENX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
This page provides access to U.S. Securities and Exchange Commission filings for Century Aluminum Company (NASDAQ: CENX), an integrated producer of bauxite, alumina and primary aluminum products headquartered in Chicago, Illinois. Century Aluminum’s common stock is listed on the Nasdaq Global Select Market, and the company files annual, quarterly and current reports that detail its operations, financial condition, capital structure and material events.
Century Aluminum’s SEC filings include annual reports on Form 10-K and quarterly reports on Form 10-Q, which present audited and unaudited financial statements, risk factors, management’s discussion and analysis and other disclosures. Investors can review information on net sales to related parties and other customers, aluminum shipments, cost of goods sold, gross profit, operating income, interest expense, derivative contract results, liquidity and debt obligations. These filings also describe the company’s integrated operations in the United States, Iceland, the Netherlands and Jamaica and its position as the largest producer of primary aluminum in the United States.
Current reports on Form 8-K provide timely updates on specific events. Recent 8-K filings have covered quarterly earnings announcements, an electrical equipment failure at the Grundartangi aluminum smelter in Iceland, the pricing and closing of 6.875% Senior Secured Notes due 2032, and amendments to Century Aluminum’s loan and security agreement. These filings describe the terms of the senior secured notes, related guarantees and collateral, the use of proceeds to refinance existing notes and repay credit facilities, and changes to the company’s credit facility maturity and other terms.
Through this filings page, users can also review exhibits such as indentures, security agreements, collateral agency agreements and credit facility amendments that define Century Aluminum’s debt structure and covenant framework. AI-powered tools on the platform can summarize lengthy documents, highlight key terms in 10-K and 10-Q reports, and explain complex financing arrangements and risk disclosures in plain language, helping users interpret the implications of Century Aluminum’s SEC filings for its CENX stock.
CENTURY President and CEO Jesse E. Gary reported estate-planning and selling transactions involving the company’s common stock. On January 12, 2026, he transferred 314,611 shares of common stock from direct ownership to a self-settled, revocable trust for which he serves as trustee, at a stated price of $0. After this transfer, he directly held 277,227 shares, which include unvested RSUs granted under the company’s long-term incentive plans, and the trust held 442,580 shares.
On January 23, 2026, the trust sold 150,000 shares of CENTURY common stock at a weighted average price of $48.19 per share under a Rule 10b5-1 trading plan adopted on August 20, 2025. Following this sale, the trust continued to hold 292,580 shares of CENTURY common stock for the benefit of Gary as trustee.
A holder of CENX common stock has filed a notice to sell 300,000 shares through J.P. Morgan Securities LLC on NASDAQ, with an aggregate market value of $14,490,000. These shares are part of the issuer’s common stock, which had 93,341,969 shares outstanding at the time of the notice. The shares were acquired on 12/31/2025 via RSU vesting as compensation from the issuer, and the approximate sale date listed is 01/23/2026.
Century Aluminum Company filed an amended 8-K/A to correct a technical EDGAR submission error. The original current report filed on November 6, 2025 was mistakenly tagged under the wrong item number (Item 2.01) in the EDGAR header. This amendment updates the header to reflect the correct items, Item 2.02 (Results of Operations and Financial Condition) and Item 9.01 (Financial Statements and Exhibits), without changing the underlying disclosures.
The company had issued a press release on November 6, 2025 announcing results for the quarter ended September 30, 2025 and held an earnings conference call that same day, with the press release furnished as Exhibit 99.1. The amendment states that, other than the header correction and amendment date, the report continues to speak as of the original filing date and is not updated for later events.
Glencore International AG, Glencore AG, and Glencore plc filed a Form 4 for Century Aluminum (CENX) detailing significant insider activity on 11/10/2025. The reporting group, noted as a Director and 10% Owner, sold 9,000,000 shares of common stock at $30.25 (Transaction Code S), leaving 18,500,000 shares directly beneficially owned by Glencore International AG. Separately, an automatic conversion (Code C) of 49,485.91 shares of Series A Convertible Preferred Stock resulted in 4,948,591 common shares, which are held indirectly, with 17,505,947 shares beneficially owned indirectly after the transaction.
Century Aluminum (CENX) reported Q3 2025 results showing higher sales but lower profits. Net sales were $632.2 million versus $539.1 million a year ago, while gross profit was $77.3 million and operating income was $58.3 million. Net income attributable to stockholders was $14.9 million, or $0.15 diluted EPS, compared with $47.3 million, or $0.46 diluted EPS, in Q3 2024. Commodity derivatives generated a $30.2 million quarterly loss, weighing on earnings.
The company strengthened liquidity and extended maturities: it issued $400.0 million of 6.875% senior secured notes due 2032 and redeemed its 2028 notes, recording a $6.2 million extinguishment loss. Cash and cash equivalents rose to $151.4 million from $32.9 million at year‑end. Glencore remained a key counterparty, representing 50.6% of Q3 net sales; purchases from Glencore were $90.7 million. The Section 45X production tax credit reduced Q3 cost of goods sold by $24.7 million. Shares outstanding were 93,341,969 as of November 4, 2025.
Century Aluminum (CENX) announced financial results for the quarter ended September 30, 2025, and released a press release furnished as Exhibit 99.1.
The company will host a live webcast earnings call today at 5:00 p.m. Eastern Time via its website. Registration is recommended at least 10 minutes before the start. A replay and presentation materials will be available approximately two hours after the live call.
Century Aluminum Company reported an electrical equipment failure at its Grundartangi, Iceland aluminum smelter. The company disclosed the event via a press release furnished under Item 7.01 (Regulation FD), attached as Exhibit 99.1.
The furnished information is not deemed “filed” under the Exchange Act. Century Aluminum’s common stock trades on the Nasdaq Global Select Market under the symbol CENX.
Glencore entities reported Section 16 activity in Century Aluminum (CENX). On 09/30/2025 Glencore AG converted 28.48 shares of Series A Convertible Preferred Stock into 2,848 shares of Common Stock. The filing also reports a disposition of 27,500,000 shares of Common Stock. Following the reported transactions, the filing shows 12,557,356 shares beneficially owned on an indirect basis. The converted preferred shares are held by Glencore AG, which is a direct wholly-owned subsidiary of Glencore International AG; Glencore plc may be deemed an indirect owner of those holdings.
Agust F. Hafberg, SVP & Chief Commercial Officer of Century Aluminum Co. (CENX), reported a sale of 9,493 shares of common stock on 09/26/2025 at a price of $27.91 per share. After the sale, the filing shows 55,260 shares beneficially owned in a direct capacity, and the reported holdings include unvested restricted stock units granted under the companys Long-Term Incentive Plans. The Form 4 was executed by attorney-in-fact Paul Sharobeem and filed on 09/30/2025. No derivative transactions are reported.
Century Aluminum Co (CENX) filed a Form 144 notifying a proposed sale of 9,493 shares of common stock, with an aggregate market value of $249,950.69, to be executed on or about 09/25/2025 through Charles Schwab & Co. The shares were acquired as a restricted stock grant on 12/31/2024 in payment for services. There were 93,339,121 shares outstanding reported on the form, so the sale represents approximately 0.0102% of outstanding shares. The filer states no material nonpublic information is known.