Hafberg Agust F, SVP and Chief Commercial Officer at Century Aluminum Co. ($CENX), sold shares on the open market twice in the last year for a total of $1.44 million. His most recent sale occurred on February 27, 2026. These transactions rank 4,138th among 11,678 insiders in our database, well below the average sale value of $8.6 million across 6.4 transactions per insider. Hafberg Agust F made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 27, 2026 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | S | Common Stock | 22884 | $51.24 | 45,059.0000 | 99,200,000 | 33.68% | 0.02% |
| Dec. 31, 2025 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | A | Common Stock | 30878 | $0.00 | 86,138.0000 | 99,200,000 | 55.88% | 0.03% |
| Dec. 31, 2025 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | F | Common Stock | 15622 | $39.18 | 70,516.0000 | 99,200,000 | 18.14% | 0.02% |
| Dec. 31, 2025 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | F | Common Stock | 7811 | $39.18 | 62,705.0000 | 99,200,000 | 11.08% | 0.01% |
| Jan. 1, 2026 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | A | Common Stock | 5238 | $0.00 | 67,943.0000 | 99,200,000 | 8.35% | 0.01% |
| Sept. 26, 2025 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | S | Common Stock | 9493 | $27.91 | 55,260.0000 | 98,400,000 | 14.66% | 0.01% |
| Dec. 31, 2024 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | A | Common Stock | 14304 | $0.00 | 66,682.0000 | 98,800,000 | 27.31% | 0.01% |
| Dec. 31, 2024 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | F | Common Stock | 7235 | $18.22 | 59,447.0000 | 98,800,000 | 10.85% | 0.01% |
| Dec. 31, 2024 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | F | Common Stock | 2481 | $18.22 | 56,966.0000 | 98,800,000 | 4.17% | 0.00% |
| Jan. 1, 2025 | CENTURY ALUMINUM CO | $CENX | Hafberg Agust F | SVP & Chief Commercial Officer | A | Common Stock | 7787 | $0.00 | 64,753.0000 | 98,400,000 | 13.67% | 0.01% |