CENTURY ALUMINUM CO — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| GLENCORE INTERNATIONAL AG | — | C | 4,948,591 | — | — | 17,505,947 | Nov 10, 2025 |
| Glencore AG | — | C | 2,848 | — | — | 12,557,356 | Sep 30, 2025 |
| Hafberg Agust F | SVP & Chief Commercial Officer | Sale | 9,493 | $27.91 | $264,950 | 55,260 | Sep 26, 2025 |
| Calloway Kenneth L | SVP, Human Resources | Sale | 16,450 | $27.50 | $452,375 | 28,706 | Sep 19, 2025 |
| Aboud Matt | SVP, Strategy & Business Dev't | Sale | 12,027 | $23.27 | $279,868 | 62,589 | Aug 12, 2025 |
| Glencore plc | — | C | 16,477 | — | — | 12,554,508 | Jun 30, 2025 |
| GLASSER ERROL | — | Award / Grant | 7,778 | — | — | 118,697 | Jun 16, 2025 |
| Olivier Tamla A | — | Award / Grant | 7,778 | — | — | 29,673 | Jun 16, 2025 |
| Michelmore Andrew G | — | Tax Withholding | 2,333 | $17.36 | $40,501 | 89,089 | Jun 16, 2025 |
| Bush Jennifer Mary | — | Award / Grant | 7,778 | — | — | 46,872 | Jun 16, 2025 |
| Berntzen Jarl | — | Award / Grant | 7,778 | — | — | 208,951 | Jun 16, 2025 |
| Glencore plc | — | C | 3,593 | — | — | 12,538,031 | Mar 31, 2025 |
| Trpkovski Peter A | EVP, CFO and Treasurer | Award / Grant | 12,455 | — | — | 65,491 | Mar 21, 2025 |
| Hoffman Robert F | SVP, IT and CAO | Sale | 5,000 | $20.24 | $101,200 | 59,083 | Mar 20, 2025 |
| Hoffman Robert F | SVP, IT and CAO | Sale | 2,500 | $19.99 | $49,975 | 64,083 | Mar 14, 2025 |
| Trpkovski Peter A | SVP, Finance and Treasurer | Tax Withholding | 4,501 | $18.69 | $84,124 | 53,036 | Feb 7, 2025 |
| Gary Jesse E | President and CEO | Gift | 127,216 | — | — | 366,147 | Jan 28, 2025 |
| Hoffman Robert F | SVP, IT and CAO | Tax Withholding | 1,852 | $18.22 | $33,743 | 58,326 | Jan 1, 2025 |
| Gudlaugsson Gunnar | EVP - Global Operations | Award / Grant | 35,199 | — | — | 143,131 | Jan 1, 2025 |
| Hafberg Agust F | SVP & Chief Commercial Officer | Award / Grant | 14,304 | — | — | 66,682 | Jan 1, 2025 |
| DeZee John | EVP, GC and Secretary | Award / Grant | 26,036 | — | — | 127,919 | Jan 1, 2025 |
| Aboud Matt | SVP, Strategy & Business Dev't | Tax Withholding | 2,523 | $18.22 | $45,969 | 65,681 | Jan 1, 2025 |
| Trpkovski Peter A | SVP, Finance and Treasurer | Award / Grant | 4,624 | — | — | 54,243 | Jan 1, 2025 |
| Bialek Gerald C | Chief Financial Officer | Award / Grant | 17,534 | — | — | 100,620 | Jan 1, 2025 |
| Gary Jesse E | President and CEO | Award / Grant | 185,848 | — | — | 510,505 | Dec 31, 2024 |
| Calloway Kenneth L | SVP, Human Resources | Award / Grant | 7,267 | — | — | 41,774 | Dec 31, 2024 |
| Glencore plc | — | C | 210,162 | — | — | 12,534,438 | Dec 31, 2024 |
| Gary Jesse E | President and CEO | Sale | 50,000 | $18.48 | $924,000 | 753 | Dec 26, 2024 |
| Gudlaugsson Gunnar | EVP - Global Operations | Sale | 20,000 | $23.85 | $477,000 | 107,932 | Dec 5, 2024 |
| Glencore AG | — | C | 13,192 | — | — | 12,324,276 | Sep 30, 2024 |
| Gary Jesse E | President and CEO | Gift | 17,549 | — | — | 79,996 | Jul 11, 2024 |
| Gary Jesse E | President and CEO | Tax Withholding | 13,958 | $16.67 | $232,680 | 342,206 | Jul 1, 2024 |
| Glencore plc | — | C | 29,014 | — | — | 12,311,084 | Jun 30, 2024 |
| Gary Jesse E | President and CEO | Sale | 60,000 | $16.21 | $972,600 | 62,447 | Jun 26, 2024 |
| Olivier Tamla A | — | Award / Grant | 7,070 | — | — | 21,895 | Jun 3, 2024 |
| Berntzen Jarl | — | Award / Grant | 7,070 | — | — | 201,173 | Jun 3, 2024 |
| Bush Jennifer Mary | — | Award / Grant | 7,070 | — | — | 39,094 | Jun 3, 2024 |
| GLASSER ERROL | — | Award / Grant | 7,070 | — | — | 110,919 | Jun 3, 2024 |
| Michelmore Andrew G | — | Tax Withholding | 2,121 | $17.71 | $37,563 | 83,644 | Jun 3, 2024 |
| Glencore plc | — | C | 4,562 | — | — | 12,282,070 | Mar 31, 2024 |
| Aboud Matt | SVP, Strategy & Business Dev't | Sale | 3,766 | $10.61 | $39,957 | 59,248 | Mar 4, 2024 |
| Trpkovski Peter A | SVP, Finance and Treasurer | Tax Withholding | 3,211 | $10.42 | $33,459 | 49,619 | Feb 9, 2024 |
| Gary Jesse E | President and CEO | Gift | 46,004 | — | — | 356,164 | Jan 19, 2024 |
| Hoffman Robert F | VP, IT and CAO | Tax Withholding | 1,075 | $12.14 | $13,051 | 39,903 | Jan 1, 2024 |
| Bialek Gerald C | Chief Financial Officer | Award / Grant | 35,974 | — | — | 83,086 | Jan 1, 2024 |
| Gary Jesse E | President and CEO | Tax Withholding | 24,742 | $12.14 | $300,368 | 266,422 | Dec 31, 2023 |
| DeZee John | EVP, GC and Secretary | Tax Withholding | 1,206 | $12.14 | $14,641 | 81,002 | Dec 31, 2023 |
| Gudlaugsson Gunnar | EVP - Global Operations | Award / Grant | 47,364 | — | — | 127,932 | Dec 31, 2023 |
| Aboud Matt | SVP, Strategy & Business Dev't | Tax Withholding | 2,169 | $12.14 | $26,332 | 45,635 | Dec 31, 2023 |
| GLENCORE INTERNATIONAL AG | — | C | 122,393 | — | — | 12,277,508 | Dec 31, 2023 |