Welcome to our dedicated page for CENTURY ALUMINUM 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.
Century Aluminum Co. filings document the regulatory record of a Nasdaq-listed primary aluminum producer, including earnings-related Form 8-K reports, annual meeting proxy materials and material-event disclosures. The filings cover operating results, aluminum shipments, liquidity, non-GAAP measures, common stock registration details and governance matters presented to shareholders.
Recent disclosures also address accounting treatment for the Jamalco Production Assets, related non-reliance and late-filing notices, and material agreements involving subsidiary asset sales. The filing record ties these items to Century's aluminum operations, consolidation policies, board oversight, capital structure and public-company reporting obligations.
Trpkovski Peter A reported disposition transactions in a Form 4 filing for CENX. The filing lists transactions totaling 4,240 shares at a weighted average price of $54.36 per share. Following the reported transactions, holdings were 80,864 shares.
Century Aluminum Company, through its subsidiary Century Aluminum of Kentucky General Partnership, completed the sale of approximately 750 acres of real property in Hawesville, Kentucky to Justified DataPower LLC. The buyer plans to develop a high-performance computing and artificial intelligence data center on the site.
CAKY received $200,000,000 in cash plus a 6.8% non-dilutive minority equity interest in Raylan Data Holdings LLC, which is affiliated with the purchaser and will own the data center. CAKY may require Raylan Data to purchase this minority interest starting on the first anniversary of the data center’s commencement of operations.
Century Aluminum and its affiliates will not participate in financing, constructing, managing or operating the data center and have no obligation to contribute additional capital to maintain their minority stake. The agreement includes customary representations, covenants and mutual indemnities, and the company has issued a press release describing the transaction.
The Vanguard Group reports beneficial ownership of 6,939,794 shares of Century Aluminum Co common stock, representing 7.43% of the class as of 12/31/2025. Vanguard has shared voting power over 453,948 shares and shared dispositive power over all 6,939,794 shares, with no sole voting or dispositive power.
The filing notes an internal realignment effective 01/12/2026, after which certain Vanguard subsidiaries or business divisions are expected to report beneficial ownership separately. Vanguard states the securities are held in the ordinary course of business and not for the purpose of changing or influencing control of Century Aluminum.
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.