Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| CENTURY ALUMINUM COCENX · Entity 3947 | Director | June 15, 2026 | June 17, 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 June 15, 2026 · Filed June 17, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 90,609 |
Ending reported balance
After 2026-06-15 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2026-06-15 · Grant · Acquired 2,172 · Balance 91,261 F1: Represents annual grant of restricted stock units ("RSUs"), all of which vested on the date of grant. Row 2 · 2026-06-15 · Tax withholding · Disposed 652 · Balance 90,609 F2: Represents shares withheld by the Issuer upon vesting of the RSUs to satisfy tax obligations. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents annual grant of restricted stock units ("RSUs"), all of which vested on the date of grant.
F2: Represents shares withheld by the Issuer upon vesting of the RSUs to satisfy tax obligations.
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 |
|---|---|---|---|---|---|---|
| June 15, 2026 Filed Jun 17, 2026 20:41 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 652 | $54.55 | $35,566.60 |
DisclosureSEC source: 0001628280-26-043946 · wk-form4_1781728916.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 90,609 F2 · shares: Represents shares withheld by the Issuer upon vesting of the RSUs to satisfy tax obligations. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:41 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 2,172 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-043946 · wk-form4_1781728916.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 91,261 F1 · shares: Represents annual grant of restricted stock units ("RSUs"), all of which vested on the date of grant. Read SEC document |
| June 16, 2025 Filed Jun 18, 2025 22:25 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 2,333 | $17.36 | $40,500.88 |
DisclosureSEC source: 0000949157-25-000043 · wk-form4_1750285527.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 89,089 F2 · shares: Represents shares withheld by the Issuer upon vesting of the RSUs to satisfy tax obligations. Read SEC document |
| June 16, 2025 Filed Jun 18, 2025 22:25 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 7,778 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-25-000043 · wk-form4_1750285527.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 91,422 F1 · shares: Represents annual grant of restricted stock units ("RSUs"), all of which vested on the date of grant. Read SEC document |
| June 03, 2024 Filed Jun 5, 2024 22:42 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 2,121 | $17.71 | $37,562.91 |
DisclosureSEC source: 0000949157-24-000053 · wk-form4_1717627317.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 83,644 F2 · shares: Represents shares withheld by the Issuer upon vesting of the TVSUs to satisfy tax obligations. Read SEC document |
| June 03, 2024 Filed Jun 5, 2024 22:42 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 7,070 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-24-000053 · wk-form4_1717627317.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 85,765 F1 · shares: Represents annual grant of time-vesting share units ("TVSUs"), all of which vested on the date of grant. Read SEC document |
| June 05, 2023 Filed Jun 7, 2023 22:42 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 4,448 | $8.51 | $37,852.48 |
DisclosureSEC source: 0000949157-23-000049 · wk-form4_1686177763.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 78,695 F2 · shares: Represents shares withheld by the Issuer upon vesting of the TVSUs to satisfy tax obligations. Read SEC document |
| June 05, 2023 Filed Jun 7, 2023 22:42 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 14,825 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-23-000049 · wk-form4_1686177763.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 83,143 F1 · shares: Represents annual grant of time-vesting share units ("TVSUs"), all of which vested on the date of grant. Read SEC document |
| June 14, 2022 Filed Jun 16, 2022 21:21 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 2,808 | $10.43 | $29,287.44 |
DisclosureSEC source: 0000899243-22-022871 · doc4.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 68,318 F2 · shares: Represents shares withheld by the Issuer upon vesting of the TVSUs to satisfy tax obligations. Read SEC document |
| June 14, 2022 Filed Jun 16, 2022 21:21 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 9,358 | $0.00 | $0.00 |
DisclosureSEC source: 0000899243-22-022871 · doc4.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 71,126 F1 · shares: Represents annual grant of service-based time-vesting share units ("TVSUs"), all of which vested on the date of grant. Read SEC document |
| June 15, 2021 Filed Jun 16, 2021 23:04 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 2,321 | $13.42 | $31,147.82 |
DisclosureSEC source: 0000949157-21-000102 · wf-form4_162388466171749.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 61,768 F2 · shares: Represents shares withheld by the Issuer in connection with the vesting of grant of time-vesting share units made to the Reporting Person pursuant to a Rule 16b-3(d) plan to satisfy tax obligations at a net settlement price equal to the closing price on Nasdaq on June 15, 2021, the vesting date. Read SEC document |
| June 15, 2021 Filed Jun 16, 2021 23:04 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 7,737 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-21-000102 · wf-form4_162388466171749.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 64,089 F1 · shares: Annual grant of service based time-vesting share units made to directors on June 15, 2021, pursuant to Rule 16b-3(d) plan, all of which vest immediately. Read SEC document |
| June 09, 2020 Filed Jun 11, 2020 20:20 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 5,466 | $7.83 | $42,798.78 |
DisclosureSEC source: 0000949157-20-000077 · wf-form4_159190680582322.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 56,352 F2 · shares: Represents shares withheld by the Issuer in connection with the vesting of grant of time-vesting share units made to the Reporting Person pursuant to a Rule 16b-3(d) plan to satisfy tax obligations at a net settlement price equal to the closing price on Nasdaq on June 9, 2020, the vesting date. Read SEC document |
| June 09, 2020 Filed Jun 11, 2020 20:20 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 18,220 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-20-000077 · wf-form4_159190680582322.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 61,818 F1 · shares: Annual grant of time-vesting share units made to directors on June 9, 2020, pursuant to Rule 16b-3(d) plan, all of which vest immediately. Read SEC document |
| March 10, 2020 Filed Mar 11, 2020 20:34 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | PurchaseCommon Stock | 3,000 | $4.41 | $13,230.00 |
DisclosureSEC source: 0000949157-20-000027 · wf-form4_158395883465834.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 43,598 Read SEC document |
| June 13, 2019 Filed Jun 20, 2019 20:06 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | PurchaseCommon Stock | 5,000 | $5.78 | $28,900.00 |
DisclosureSEC source: 0000949157-19-000089 · wf-form4_156106118912644.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,598 Read SEC document |
| June 04, 2019 Filed Jun 5, 2019 20:32 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 3,879 | $5.63 | $21,838.77 |
DisclosureSEC source: 0000949157-19-000085 · wf-form4_155976673993666.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 35,598 F2 · shares: Represents shares withheld by the Issuer in connection with the vesting of grant of Performance Shares made to the Reporting Person pursuant to a Rule 16b-3(d) plan to satisfy tax obligations at a net settlement price equal to the closing price on Nasdaq on June 4, 2019, the vesting date. Read SEC document |
| June 04, 2019 Filed Jun 5, 2019 20:32 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 12,929 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-19-000085 · wf-form4_155976673993666.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 39,477 F1 · shares: Annual grant of service based performance shares units made to directors on June 4, 2019, pursuant to Rule 16b-3(d) plan, all of which vest immediately. Read SEC document |
| October 29, 2018 Filed Oct 31, 2018 20:05 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | PurchaseCommon Stock | 5,000 | $7.87 | $39,350.00 |
DisclosureSEC source: 0000949157-18-000110 · wf-form4_154101631467980.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 26,548 Read SEC document |
| September 17, 2018 Filed Sep 19, 2018 21:46 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | Tax withholdingCommon Stock | 1,766 | $11.78 | $20,803.48 |
DisclosureSEC source: 0000949157-18-000096 · wf-form4_153739359378804.xml · nonDerivative · entry 2 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 21,548 F2 · shares: Represents shares withheld by the Issuer in connection with the vesting of performance share units made to the Reporting Person pursuant to a Rule 16b-3(d) plan to satisfy tax obligations at a net settlement price equal to the closing price on Nasdaq on September 17, 2018, the vesting date. Read SEC document |
| September 17, 2018 Filed Sep 19, 2018 21:46 UTC | CENTURY ALUMINUM CO CENX · Entity 3947 | GrantCommon Stock | 5,885 | $0.00 | $0.00 |
DisclosureSEC source: 0000949157-18-000096 · wf-form4_153739359378804.xml · nonDerivative · entry 1 Michelmore Andrew G · CIK 0001493775 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 23,314 F1 · shares: Grant of service based performance shares units made to the Reporting Person on September 17, 2018, pursuant to Rule 16b-3(d) plan, all of which vest immediately. 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.