🕵️ Century Aluminum Co ($CENX)
SEC insider & ownership activity, last 12 months · CIK 949157 · every row links its SEC filing
Over the last 12 months insiders sold $626.3M with no open-market buying against it. Glencore International Ag sold $599.1M in discretionary trades (Nov–Mar). 1 planned sale is pending, the largest $5.9M (Berntzen Jarl). One red-flag 8-K in the window: Restatement (4.02), Mar 2, 2026.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 9 sellers, $626.3M (16 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Glencore International Ag | 0 | – | 2 | $599.1M | Mar 4, 2026 |
| Jesse E. Gary | 0 | – | 2 | $15.5M | Mar 16, 2026 |
| Dezee John | 0 | – | 1 | $3.3M | Feb 23, 2026 |
| Gudlaugsson Gunnar | 0 | – | 1 | $2.3M | Feb 25, 2026 |
| Kenneth L. Calloway | 0 | – | 2 | $1.5M | Mar 12, 2026 |
| Agust F. Hafberg | 0 | – | 2 | $1.4M | Feb 27, 2026 |
| Robert F. Hoffman | 0 | – | 2 | $1.2M | Mar 11, 2026 |
| Aboud Matt | 0 | – | 3 | $1.1M | Mar 3, 2026 |
| Peter A. Trpkovski | 0 | – | 1 | $845K | Mar 25, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Glencore International Ag | 30.0% | 13D | Mar 4, 2026 | filing ↗ | |
| Glencore PLC | 30.0% | 13D | Mar 4, 2026 | filing ↗ | |
| Glencore Ag | 17.7% | 13D | Mar 4, 2026 | filing ↗ | |
| Blackrock, Inc. | 9.5% | 13G | Jul 27, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Berntzen Jarl | $5.9M | Jun 9, 2026 | filing ↗ |
| Peter A. Trpkovski | $845K | Mar 25, 2026 | filing ↗ |
| Kenneth L. Calloway | $1.1M | Mar 12, 2026 | filing ↗ |
| Glencore International Ag | $52 | Mar 4, 2026 | filing ↗ |
| Robert F. Hoffman | $1.1M | Mar 2, 2026 | filing ↗ |
| Aboud Matt | $1.5M | Feb 27, 2026 | filing ↗ |
| Agust F. Hafberg | $1.2M | Feb 25, 2026 | filing ↗ |
| Gudlaugsson Gunnar | $2.3M | Feb 25, 2026 | filing ↗ |
| Dezee John | $3.5M | Feb 23, 2026 | filing ↗ |
| Jesse E. Gary | $14.5M | Jan 23, 2026 | filing ↗ |
| Glencore International Ag | $297.4M | Nov 10, 2025 | filing ↗ |
| Agust F. Hafberg | $250K | Sep 25, 2025 | filing ↗ |
| Kenneth L. Calloway | $433K | Sep 15, 2025 | filing ↗ |
| Aboud Matt | $277K | Aug 12, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Shareholder vote (5.07) | Jun 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 15, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Restatement (4.02) | Mar 2, 2026 | filing ↗ |
| Earnings (2.02) | Feb 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 19, 2026 | filing ↗ |
| Material agreement (1.01) | Feb 2, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Feb 2, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Acquisition or disposition (2.01) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 21, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 21, 2025 | filing ↗ |
| Earnings (2.02) | Aug 7, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 7, 2025 | filing ↗ |