SEC Insider Transactions from Hafberg Agust F.

Last updated: 2026-03-14 11:54 UTC | Total transactions: 10

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.

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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%