As of June 12, 2026, Century Aluminum's top three insider holders are Ag Glencore (TenPercentOwner, 11.70Mn shares), Jesse E Gary (President And Ceo, 277.23K shares), Jarl Berntzen (Director, 208.95K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Errol Glasser | - | 118,697 | 0 | 18 Jun, 2025 |
| Jarl Berntzen | - | 208,951 | 0 | 18 Jun, 2025 |
| Michelle Harrison | Sr. Vp Finance Treasurer | 80,947 | 0 | 04 Jan, 2023 |
| Ag Glencore | - | 11,701,321 | 0 | 30 Sep, 2022 |
| Andrew G Michelmore | - | 89,089 | 0 | 18 Jun, 2025 |
| Jesse E Gary | President And Ceo | 277,227 | 0 | 23 Jan, 2026 |
| Robert F Hoffman | Svp, It And Cao | 56,643 | 0 | 13 Mar, 2026 |
| Craig C Conti | Evp Chief Financial Officer | 117,018 | 0 | 01 Mar, 2022 |
| Gerald C Bialek | Chief Financial Officer | 100,620 | 0 | 03 Jan, 2025 |
| Gunnar Gudlaugsson | Evp Global Operations | 136,393 | 0 | 27 Feb, 2026 |
| John Dezee | Evp, Gc And Secretary | 97,647 | 0 | 25 Feb, 2026 |
| Matt Aboud | Svp, Strategy Business Dev'T | 64,843 | 0 | 04 Mar, 2026 |
| Jennifer Mary Bush | - | 46,872 | 0 | 18 Jun, 2025 |
| Tamla A Olivier | - | 29,673 | 0 | 18 Jun, 2025 |
| Peter A Trpkovski | Evp, Cfo | 64,125 | 0 | 27 Mar, 2026 |
| Kenneth L Calloway | Svp, Human Resources | 24,902 | 0 | 13 Mar, 2026 |
| Agust F Hafberg | Svp Chief Commercial Officer | 45,059 | 0 | 03 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 25 Mar, 2026 | Peter A Trpkovski | Common Stock | D | 16,739 | $50.51 | 64,125 | D | S |
| 25 Mar, 2026 | Peter A Trpkovski | Common Stock | D | 16,739 | $50.51 | 64,125 | D | S |
| 16 Mar, 2026 | Jesse E Gary | Common Stock | D | 150,000 | $55.47 | 142,580 | I | S |
| 16 Mar, 2026 | Jesse E Gary | Common Stock | D | 150,000 | $55.47 | 142,580 | I | S |
| 12 Mar, 2026 | Kenneth L Calloway | Common Stock | D | 18,000 | $58.00 | 24,902 | D | S |
| 12 Mar, 2026 | Kenneth L Calloway | Common Stock | D | 18,000 | $58.00 | 24,902 | D | S |
| 11 Mar, 2026 | Robert F Hoffman | Common Stock | D | 10,529 | $56.51 | 56,643 | D | S |
| 11 Mar, 2026 | Robert F Hoffman | Common Stock | D | 10,529 | $56.51 | 56,643 | D | S |
| 04 Mar, 2026 | Robert F Hoffman | Common Stock | D | 10,000 | $56.33 | 67,172 | D | S |
| 04 Mar, 2026 | Robert F Hoffman | Common Stock | D | 10,000 | $56.33 | 67,172 | D | S |
| 02 Mar, 2026 | Matt Aboud | Common Stock | D | 12,126 | $52.50 | 67,814 | D | S |
| 03 Mar, 2026 | Matt Aboud | Common Stock | D | 2,971 | $52.67 | 64,843 | D | S |
| 27 Feb, 2026 | Agust F Hafberg | Common Stock | D | 22,884 | $51.24 | 45,059 | D | S |
| 27 Feb, 2026 | Agust F Hafberg | Common Stock | D | 22,884 | $51.24 | 45,059 | D | S |
| 25 Feb, 2026 | Gunnar Gudlaugsson | Common Stock | D | 43,000 | $54.10 | 136,393 | D | S |
| 25 Feb, 2026 | Gunnar Gudlaugsson | Common Stock | D | 43,000 | $54.10 | 136,393 | D | S |
| 23 Feb, 2026 | John Dezee | Common Stock | D | 66,000 | $50.72 | 97,647 | D | S |
| 23 Feb, 2026 | John Dezee | Common Stock | D | 66,000 | $50.72 | 97,647 | D | S |
| 09 Feb, 2026 | Peter A Trpkovski | Common Stock | D | 4,240 | $54.36 | 80,864 | D | F |
| 09 Feb, 2026 | Peter A Trpkovski | Common Stock | D | 4,240 | $54.36 | 80,864 | D | F |