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 Aluminum executive vice president and CFO Peter A. Trpkovski sold 16,739 shares of common stock in an open-market transaction on March 25, 2026 at a weighted average price of $50.51 per share, with trades ranging from $50.50 to $50.64.
After this sale, he directly holds 64,125 shares, which include unvested restricted stock units granted under the company’s long-term incentive plans, so this represents a reduction rather than an exit of his equity position.
Century Aluminum Co: The Vanguard Group filed an amendment to its Schedule 13G disclosing that, following an internal realignment, Vanguard and certain subsidiaries will report beneficial ownership separately under SEC Release No. 34-39538. The filing states amount beneficially owned: 0 and percent of class: 0%.
CENX filed a Form 144 reporting a proposed sale of Common stock by an affiliate. The excerpt lists multiple securities tied to compensation with dated entries ranging from 12/31/2023 to 02/01/2025
Century Aluminum President and CEO Gary Jesse reported an open-market sale of 150,000 shares of Common Stock at a weighted average price of $55.47 per share, executed under a Rule 10b5-1 trading plan adopted on August 20, 2025.
The sale was executed by a self-settled, revocable trust for which he serves as trustee, at prices ranging from $54.08 to $56.80. After the transaction, he indirectly held 142,580 shares through the trust and directly held 277,227 shares, which include unvested RSUs granted under the company’s long-term incentive plans.
Century Aluminum senior vice president of human resources Kenneth L. Calloway reported an open-market sale of 18,000 shares of common stock at $58 per share. After this transaction, he directly holds 24,902 shares, which include unvested RSUs granted under the company’s long-term incentive plans.
Century Aluminum executive Robert F. Hoffman, SVP, IT and Chief Accounting Officer, sold 10,529 shares of common stock in an open-market transaction on March 11, 2026 at a weighted average price of $56.51 per share, with trades ranging from $56.25 to $56.75.
After the sale, he directly owns 56,643 common shares, which include unvested RSUs granted under the company’s long-term incentive plans, and holds an additional 14.5476 shares indirectly through a 401(k) plan as reported by the plan trustee.
Century Aluminum senior vice president and chief accounting officer Robert F. Hoffman sold 10,000 shares of common stock in an open-market transaction on March 4, 2026, at a weighted average price of $56.33 per share, with individual trades ranging from $56.15 to $56.50.
After the sale, he directly owned 67,172 shares, which include unvested restricted stock units, and had an additional 14.5476 shares held indirectly through a 401(k) plan as reported by the plan trustee.
Century Aluminum Company senior vice president Matt Aboud reported selling a total of 15,097 shares of common stock in open-market transactions. He sold 12,126 shares on March 2, 2026 at a weighted average price of $52.50 per share and 2,971 shares on March 3, 2026 at a weighted average price of $52.67 per share, with actual trade prices falling within disclosed ranges. After these sales, he directly owned 64,843 shares, which include unvested restricted stock units granted under the company’s long-term incentive plans.
Glencore International AG, a major shareholder of Century Aluminum, reported an open-market sale of 6,315,245 shares of common stock at $51.75 per share. After this transaction, Glencore International AG held 12,184,755 shares of Century Aluminum common stock.
The filing also lists Glencore plc and Glencore AG as reporting persons. The footnote explains that the shares sold and held are directly owned by Glencore International AG, while Glencore plc, as its parent, may be deemed an indirect beneficial owner of these securities.