Every Form 4 that Century Aluminum Co (CENX) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow CENX and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full CENX filings page.
Berntzen Jarl reported acquisition or exercise transactions in this Form 4 filing.
Century Aluminum Co director Jarl Berntzen received an annual equity award of 2,172 shares of common stock as restricted stock units (RSUs). The RSUs vest in full on the earlier of the 12-month anniversary of the grant date, the company’s next regular annual meeting of stockholders, or certain other events defined in the award terms. After this grant, Berntzen directly holds 211,123 shares of Century Aluminum common stock, which includes shares issuable from vested RSUs whose settlement has been deferred under a prior annual deferral election.
Century Aluminum director Errol Glasser reported receiving 2,172 shares of Common Stock as a compensation grant. The filing explains this was an annual award of restricted stock units that fully vested on the grant date rather than an open-market purchase.
After this award, Glasser holds 120,869 shares of Century Aluminum stock directly. This total includes shares issuable from vested RSUs whose settlement has been deferred under an earlier deferral election, meaning some vested units will be converted into shares at a later time instead of immediately.
Century Aluminum director Andrew G. Michelmore reported routine equity compensation activity involving company stock. He received a grant of 2,172 shares of Common Stock as an annual award of restricted stock units, with all RSUs vesting on the grant date. To satisfy associated tax obligations upon vesting, 652 shares were withheld by the company at a price of $54.55 per share. After these transactions, Michelmore directly holds 90,609 shares of Century Aluminum common stock.
Bush Jennifer Mary reported acquisition or exercise transactions in this Form 4 filing.
Century Aluminum director Jennifer Mary Bush received an equity award in the form of restricted stock units. She was granted 2,172 shares of common stock on a grant/award basis at no cash price, as part of her annual compensation.
The RSUs vest in full on the earlier of the 12-month anniversary of the grant date, the company’s next regular annual meeting of stockholders, or certain other events described in the award terms. After this grant, she holds 49,044 shares of common stock directly, including shares issuable from vested RSUs whose settlement she has elected to defer.
Olivier Tamla A reported acquisition or exercise transactions in this Form 4 filing.
Century Aluminum Company director Olivier A. Tamla received an annual equity grant. He was awarded 2,172 shares of common stock in the form of restricted stock units at no cash cost. After this grant, he directly holds 31,845 shares, including shares issuable from vested RSUs subject to a deferral election. The RSUs vest in full on the earlier of the 12‑month anniversary of the grant date, the next regular annual stockholder meeting, or certain other events under the award terms.
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 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.
Century Aluminum Company executive Agust F. Hafberg, the SVP & Chief Commercial Officer, reported an open-market sale of 22884 shares of common stock on February 27, 2026 at $51.24 per share.
After this transaction, he directly holds 45059 shares, which the filing notes include unvested restricted stock units granted under the company’s long-term incentive plans.
Century Aluminum Company executive vice president of global operations Gunnar Gudlaugsson reported an open-market sale of common stock. On February 25, 2026, he sold 43,000 shares at $54.10 per share. After this transaction, he held 136,393 shares, which the disclosure notes include unvested restricted stock units granted under the company’s long-term incentive plans.
Century Aluminum executive John DeZee sold 66,000 shares of common stock in an open-market transaction. The sale occurred on February 23, 2026 at a weighted average price of $50.72 per share, with individual trades ranging from $49.91 to $52.01. After the sale, DeZee directly owned 97,647 shares, including unvested restricted stock units.
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 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.
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.
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.
Kenneth L. Calloway, Senior Vice President, Human Resources of Century Aluminum Company (CENX), reported a sale of company stock on 09/19/2025. The Form 4 shows a disposition of 16,450 shares at a price of $27.50 per share. After the reported transaction, Calloway beneficially owned 28,706 shares, an amount the filing notes includes unvested restricted stock units granted under the issuer's long-term incentive plans. The filing was signed by an attorney-in-fact on 09/23/2025 and is submitted pursuant to Section 16 reporting requirements.