Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| CENTURY ALUMINUM COCENX · Entity 3947 | EVP - Global Operations | February 25, 2026 | February 27, 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 25, 2026 · Filed February 27, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 136,393 |
Reported balance
After 2026-02-25 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-02-25 · Sale · Disposed 43,000 · Balance 136,393 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 25, 2026 Filed Feb 27, 2026 22:07 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | SaleCommon Stock | 43,000 | $54.10 | $2,326,300.00 |
DisclosureSEC source: 0001628280-26-012919 · wk-form4_1772230056.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 136,393 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 22:00 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 15,624 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-000589 · wk-form4_1767650443.xml · nonDerivative · entry 4 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 179,393 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 22:00 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 20,943 | $39.18 | $820,546.74 |
DisclosureSEC source: 0001628280-26-000589 · wk-form4_1767650443.xml · nonDerivative · entry 3 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 163,769 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 22:00 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 41,886 | $39.18 | $1,641,093.48 |
DisclosureSEC source: 0001628280-26-000589 · wk-form4_1767650443.xml · nonDerivative · entry 2 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 184,712 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 22:00 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 82,794 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-000589 · wk-form4_1767650443.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 226,598 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 |
| January 01, 2025 Filed Jan 3, 2025 22:35 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 24,582 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-25-000014 · wk-form4_1735943745.xml · nonDerivative · entry 4 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 143,804 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 22:35 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 6,105 | $18.22 | $111,233.10 |
DisclosureSEC source: 0000949157-25-000014 · wk-form4_1735943745.xml · nonDerivative · entry 3 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 119,222 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 22:35 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 17,804 | $18.22 | $324,388.88 |
DisclosureSEC source: 0000949157-25-000014 · wk-form4_1735943745.xml · nonDerivative · entry 2 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 125,327 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 22:35 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 35,199 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-25-000014 · wk-form4_1735943745.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 143,131 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 |
| December 05, 2024 Filed Dec 9, 2024 21:40 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | SaleCommon Stock | 20,000 | $23.85 | $477,000.00 |
DisclosureSEC source: 0000949157-24-000096 · wk-form4_1733780431.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 107,932 F1 · balance_after: Includes unvested TVSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans. Read SEC document |
| January 01, 2024 Filed Jan 3, 2024 22:13 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 47,364 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-24-000010 · wk-form4_1704319955.xml · nonDerivative · entry 4 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 127,932 F4 · shares: Represents TVSUs granted to the Reporting Person in connection with the Issuer's 2024-2026 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest on December 31, 2026, 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, 2023 Filed Jan 3, 2024 22:13 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 6,779 | $12.14 | $82,297.06 |
DisclosureSEC source: 0000949157-24-000010 · wk-form4_1704319955.xml · nonDerivative · entry 3 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 80,568 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 2, 2021 in the amount of 5,380 shares and on February 16, 2021 in the amount of 8,029 shares. Read SEC document |
| December 31, 2023 Filed Jan 3, 2024 22:13 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 2,892 | $12.14 | $35,108.88 |
DisclosureSEC source: 0000949157-24-000010 · wk-form4_1704319955.xml · nonDerivative · entry 2 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 87,347 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, 2023 Filed Jan 3, 2024 22:13 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 5,721 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-24-000010 · wk-form4_1704319955.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 90,239 F1 · shares: Represents shares of common stock acquired by the Reporting Person upon the vesting of PSUs granted in connection with the Issuer's 2021-2023 Long-Term Incentive Plan under Rule 16b-3(d). Read SEC document |
| January 01, 2023 Filed Jan 4, 2023 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 41,397 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-23-000011 · wf-form4_167287147249694.xml · nonDerivative · entry 4 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 84,518 F4 · shares: Represents RSUs granted to the Reporting Person in connection with the Issuer's 2023-2025 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest on December 31, 2025, subject to the Plan's terms and conditions. F5 · balance_after: Includes unvested RSUs granted to the Reporting Person pursuant to Issuer's 2021-2023, 2022-2024 and 2023-2025 Long-Term Incentive Plans under Rule 16b-3(d). Read SEC document |
| December 30, 2022 Filed Jan 4, 2023 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 4,477 | $8.18 | $36,621.86 |
DisclosureSEC source: 0000949157-23-000011 · wf-form4_167287147249694.xml · nonDerivative · entry 3 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 43,121 F3 · shares: Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of Restricted Stock Units (RSUs) previously granted to the Reporting Person on January 2, 2020. Read SEC document |
| December 30, 2022 Filed Jan 4, 2023 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 5,793 | $8.18 | $47,386.74 |
DisclosureSEC source: 0000949157-23-000011 · wf-form4_167287147249694.xml · nonDerivative · entry 2 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 47,598 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 30, 2022 Filed Jan 4, 2023 22:31 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 11,462 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-23-000011 · wf-form4_167287147249694.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 53,391 F1 · shares: Represents shares of common stock acquired by the Reporting Person upon the vesting of Performance Share Units (PSUs) granted in connection with the Issuer's 2020-2022 Long-Term Incentive Plan under Rule 16b-3(d). Read SEC document |
| January 01, 2022 Filed Jan 4, 2022 21:17 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 12,069 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-22-000005 · wf-form4_164133101565395.xml · nonDerivative · entry 4 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 41,929 F5 · shares: Represents time vesting share units granted to the Reporting Person in connection with the Issuer's 2022-2024 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest in the ordinary course on the last day of the Plan Period, December 31, 2024. F6 · balance_after: Includes unvested time vesting units granted to the Reporting Person pursuant to Issuer's 2020-2022, 2021-2023 and 2022-2024 Long-Term Incentive Plans under Rule 16b-3(d). Read SEC document |
| December 31, 2021 Filed Jan 4, 2022 21:17 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 5,299 | $16.56 | $87,751.44 |
DisclosureSEC source: 0000949157-22-000005 · wf-form4_164133101565395.xml · nonDerivative · entry 3 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 29,860 F4 · shares: Reports shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of performance share units granted to the Reporting Person. F2 · balance_after: Includes unvested time vesting units granted to the Reporting Person pursuant to Issuer's 2020-2022 and 2021-2023 Long-Term Incentive Plans under Rule 16b-3(d). Read SEC document |
| December 31, 2021 Filed Jan 4, 2022 21:17 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 10,483 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-22-000005 · wf-form4_164133101565395.xml · nonDerivative · entry 2 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 35,159 F3 · shares: Represents shares of common stock acquired by the Reporting Person upon the vesting of performance share units granted in connection with the Issuer's 2019-2021 Long-Term Incentive Plan under Rule 16b-3(d). F2 · balance_after: Includes unvested time vesting units granted to the Reporting Person pursuant to Issuer's 2020-2022 and 2021-2023 Long-Term Incentive Plans under Rule 16b-3(d). Read SEC document |
| December 31, 2021 Filed Jan 4, 2022 21:17 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 2,464 | $16.56 | $40,803.84 |
DisclosureSEC source: 0000949157-22-000005 · wf-form4_164133101565395.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 24,676 F1 · shares: Reports shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of time vesting share units granted to the Reporting Person. F2 · balance_after: Includes unvested time vesting units granted to the Reporting Person pursuant to Issuer's 2020-2022 and 2021-2023 Long-Term Incentive Plans under Rule 16b-3(d). Read SEC document |
| March 03, 2021 Filed Mar 5, 2021 21:21 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | SaleCommon Stock | 5,473 | $17.74 | $97,091.02 |
DisclosureSEC source: 0000949157-21-000047 · wf-form4_161497924883578.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,140 F1 · balance_after: Includes unvested time vesting share units granted to the Reporting Person pursuant to Issuer's 2019-2021, 2020-2022 and 2021-2023 Long-Term Incentive Plans under Rule 16b-3(d). Read SEC document |
| February 16, 2021 Filed Feb 18, 2021 21:20 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 8,029 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-21-000028 · wf-form4_161368319343027.xml · nonDerivative · entry 1 Gudlaugsson Gunnar · CIK 0001846594 · EVP - Global Operations 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 32,613 F1 · shares: Represents time vesting share units granted to the Reporting Person in connection with the Issuer's 2021-2023 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest in the ordinary course on the last day of the Plan Period, December 31, 2023. F2 · balance_after: Includes unvested time vesting share units granted to the Reporting Person pursuant to Issuer's 2019-2021, 2020-2022 and 2021-2023 Long-Term Incentive Plans 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.