Century Aluminum (NASDAQ: CENX) insider transactions
In the twelve months to 10 November 2026, executives and directors of Century Aluminum reported 12 open-market sales of 6,817,494 shares ($353.1m) and 0 open-market purchases, by 9 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 15 June 2026 | Olivier Tamla A | Director | Grant or award | +2,172 | — | 31,845 | Form 4 |
| 15 June 2026 | Bush Jennifer Mary | Director | Grant or award | +2,172 | — | 49,044 | Form 4 |
| 15 June 2026 | Michelmore Andrew G | Director | Grant or award | +2,172 | — | 91,261 | Form 4 |
| 15 June 2026 | Michelmore Andrew G | Director | Shares withheld for tax | −652 | $54.55 | 90,609 | Form 4 |
| 15 June 2026 | Glasser Errol | Director | Grant or award | +2,172 | — | 120,869 | Form 4 |
| 15 June 2026 | Berntzen Jarl | Director | Grant or award | +2,172 | — | 211,123 | Form 4 |
| 25 March 2026 | Trpkovski Peter A | EVP, CFO | Open-market sale | −16,739 | $50.51 | 64,125 | Form 4 |
| 16 March 2026 | Gary Jesse E | President and CEO | Open-market sale, 10b5-1 plan | −150,000 | $55.47 | 142,580 | Form 4 |
| 12 March 2026 | Calloway Kenneth L | SVP, Human Resources | Open-market sale | −18,000 | $58.00 | 24,902 | Form 4 |
| 11 March 2026 | Hoffman Robert F | SVP, IT and CAO | Open-market sale | −10,529 | $56.51 | 56,643 | Form 4 |
| 4 March 2026 | Hoffman Robert F | SVP, IT and CAO | Open-market sale | −10,000 | $56.33 | 67,172 | Form 4 |
| 4 March 2026 | Glencore AG | — | Open-market sale | −6,315,245 | $51.75 | 12,184,755 | Form 4 |
| 3 March 2026 | Aboud Matt | SVP, Strategy & Business Dev't | Open-market sale | −2,971 | $52.67 | 64,843 | Form 4 |
| 2 March 2026 | Aboud Matt | SVP, Strategy & Business Dev't | Open-market sale | −12,126 | $52.50 | 67,814 | Form 4 |
| 27 February 2026 | Hafberg Agust F | SVP & Chief Commercial Officer | Open-market sale | −22,884 | $51.24 | 45,059 | Form 4 |
| 25 February 2026 | Gudlaugsson Gunnar | EVP - Global Operations | Open-market sale | −43,000 | $54.10 | 136,393 | Form 4 |
| 23 February 2026 | DeZee John | EVP, GC and Secretary | Open-market sale | −66,000 | $50.72 | 97,647 | Form 4 |
| 9 February 2026 | Trpkovski Peter A | EVP, CFO | Shares withheld for tax | −4,240 | $54.36 | 80,864 | Form 4 |
| 23 January 2026 | Gary Jesse E | President and CEO | Open-market sale, 10b5-1 plan | −150,000 | $48.19 | 292,580 | Form 4 |
| 12 January 2026 | Gary Jesse E | President and CEO | Gift, 10b5-1 plan | −314,611 | — | 277,227 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Century Aluminum page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.