Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| CENTURY ALUMINUM COCENX · Entity 3947 | SVP & Chief Commercial Officer | February 27, 2026 | March 03, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
CENTURY ALUMINUM CO
Report date February 27, 2026 · Filed March 03, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 45,059 |
Reported balance
After 2026-02-27 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-02-27 · Sale · Disposed 22,884 · Balance 45,059 F1: Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans. |
Filing footnotes · ownership attribution and instrument terms
F1: Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 27, 2026 Filed Mar 3, 2026 21:56 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | SaleCommon Stock | 22,884 | $51.24 | $1,172,576.16 |
DisclosureSEC source: 0001628280-26-013986 · wk-form4_1772574995.xml · nonDerivative · entry 1 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 45,059 F1 · balance_after: Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans. Read SEC document |
| January 01, 2026 Filed Jan 5, 2026 21:57 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 5,238 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-000570 · wk-form4_1767650241.xml · nonDerivative · entry 4 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 67,943 F4 · shares: Represents RSUs granted to the Reporting Person in connection with the Issuer's 2026-2028 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest on December 31, 2028, subject to the Plan's terms and conditions. F5 · balance_after: Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans. Read SEC document |
| December 31, 2025 Filed Jan 5, 2026 21:57 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 7,811 | $39.18 | $306,034.98 |
DisclosureSEC source: 0001628280-26-000570 · wk-form4_1767650241.xml · nonDerivative · entry 3 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 62,705 F3 · shares: Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of RSUs previously granted to the Reporting Person on January 1, 2023. Read SEC document |
| December 31, 2025 Filed Jan 5, 2026 21:57 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 15,622 | $39.18 | $612,069.96 |
DisclosureSEC source: 0001628280-26-000570 · wk-form4_1767650241.xml · nonDerivative · entry 2 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 70,516 F2 · shares: Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of PSUs granted to the Reporting Person. Read SEC document |
| December 31, 2025 Filed Jan 5, 2026 21:57 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 30,878 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-000570 · wk-form4_1767650241.xml · nonDerivative · entry 1 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 86,138 F1 · shares: Represents shares of common stock acquired by the Reporting Person upon the vesting of PSUs granted in connection with the Issuer's 2023-2025 Long-Term Incentive Plan under Rule 16b-3(d). Read SEC document |
| September 26, 2025 Filed Sep 30, 2025 20:26 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | SaleCommon Stock | 9,493 | $27.91 | $264,949.63 |
DisclosureSEC source: 0001628280-25-043249 · wk-form4_1759263981.xml · nonDerivative · entry 1 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 55,260 F1 · balance_after: Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans. Read SEC document |
| January 01, 2025 Filed Jan 3, 2025 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 7,787 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-25-000012 · wk-form4_1735943461.xml · nonDerivative · entry 4 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 64,753 F4 · shares: Represents TVSUs granted to the Reporting Person in connection with the Issuer's 2025-2027 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest on December 31, 2027, subject to the Plan's terms and conditions. F5 · balance_after: Includes unvested TVSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans. Read SEC document |
| December 31, 2024 Filed Jan 3, 2025 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 2,481 | $18.22 | $45,203.82 |
DisclosureSEC source: 0000949157-25-000012 · wk-form4_1735943461.xml · nonDerivative · entry 3 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,966 F3 · shares: Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of TVSUs previously granted to the Reporting Person on January 1, 2022. Read SEC document |
| December 31, 2024 Filed Jan 3, 2025 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 7,235 | $18.22 | $131,821.70 |
DisclosureSEC source: 0000949157-25-000012 · wk-form4_1735943461.xml · nonDerivative · entry 2 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 59,447 F2 · shares: Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of PSUs granted to the Reporting Person. Read SEC document |
| December 31, 2024 Filed Jan 3, 2025 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 14,304 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-25-000012 · wk-form4_1735943461.xml · nonDerivative · entry 1 Hafberg Agust F · CIK 0002049924 · SVP & Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 66,682 F1 · shares: Represents shares of common stock acquired by the Reporting Person upon the vesting of PSUs granted in connection with the Issuer's 2022-2024 Long-Term Incentive Plan under Rule 16b-3(d). Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.