Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| KAISER ALUMINUM CORPKALU · Entity 4302 | EVP & CFO | April 28, 2026 | April 29, 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.
KAISER ALUMINUM CORP
Report date April 28, 2026 · Filed April 29, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common Stock, par value $0.01 per shareSEC Table I · non-derivative | IndirectBy West Family Trust | 19,091 |
Reported balance
After 2026-04-28 transaction · row 1
Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source rowRow 1 · 2026-04-28 · Sale · Disposed 5,000 · Balance 19,091 |
| Common Stock, par value $0.01 per shareSEC Table I · non-derivative | Direct | 18,390 |
Reported balance
Holding disclosure · report date 2026-04-28 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 18,390 F1: Shares acquired pursuant to grants of restricted stock units |
Filing footnotes · ownership attribution and instrument terms
F1: Shares acquired pursuant to grants of restricted stock units
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 |
|---|---|---|---|---|---|---|
| October 29, 2019 Filed Oct 31, 2019 21:51 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | SaleCommon Stock, par value $0.01 per share | 750 | $108.01 | $81,007.50 |
DisclosureSEC source: 0001628280-19-012994 · wf-form4_157255867827600.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · SVP & CFO 10b5-1 filing: Not disclosed Ownership: Indirect · By West Family Trust Disclosed balance after: 4,217 F1 · kind: Sales made pursuant to a 10b5-1 plan adopted by the reporting person on April 26, 2019 as part of the reporting person's financial planning to diversify his stockholdings. The plan contemplates the sale of a pre-determined amount of vested shares of common stock of the Registrant held by the reporting person in specified increments subject to designated floor prices. Read SEC document |
| September 11, 2019 Filed Sep 13, 2019 22:19 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | SaleCommon Stock, par value $0.01 per share | 750 | $100.00 | $75,000.00 |
DisclosureSEC source: 0001628280-19-011716 · wf-form4_156841315012959.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · SVP & CFO 10b5-1 filing: Not disclosed Ownership: Indirect · By West Family Trust Disclosed balance after: 4,967 F1 · kind: Sales made pursuant to a 10b5-1 plan adopted by the reporting person on April 26, 2019 as part of the reporting person's financial planning to diversify his stockholdings. The plan contemplates the sale of a pre-determined amount of vested shares of common stock of the Registrant held by the reporting person in specified increments subject to designated floor prices. Read SEC document |
| June 18, 2019 Filed Jun 18, 2019 22:38 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | SaleCommon Stock, par value $0.01 per share | 750 | $100.00 | $75,000.00 |
DisclosureSEC source: 0001628280-19-008101 · wf-form4_156089750451649.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · SVP & CFO 10b5-1 filing: Not disclosed Ownership: Indirect · By West Family Trust Disclosed balance after: 5,717 F1 · kind: Sales made pursuant to a 10b5-1 plan adopted by the reporting person on April 26, 2019 as part of the reporting person's financial planning to diversify his stockholdings. The plan contemplates the sale of a pre-determined amount of vested shares of common stock of the Registrant held by the reporting person in specified increments subject to designated floor prices. Read SEC document |
| March 05, 2019 Filed Mar 7, 2019 22:47 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | Tax withholdingCommon Stock, par value $0.01 per share | 383 | $108.79 | $41,666.57 |
DisclosureSEC source: 0001628280-19-002661 · wf-form4_155199883922771.xml · nonDerivative · entry 4 West Neal E · CIK 0001330319 · SVP & CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,545 F5 · shares: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2019 of certain restricted stock units granted to the reporting person in 2016 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. F6 · balance_after: Includes 4,987 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2019 Filed Mar 7, 2019 22:47 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | Tax withholdingCommon Stock, par value $0.01 per share | 499 | $108.79 | $54,286.21 |
DisclosureSEC source: 0001628280-19-002661 · wf-form4_155199883922771.xml · nonDerivative · entry 3 West Neal E · CIK 0001330319 · SVP & CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,928 F4 · shares: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2019 of the above-referenced performance shares. F2 · balance_after: Includes 6,092 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2019 Filed Mar 7, 2019 22:47 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | GrantCommon Stock, par value $0.01 per share | 1,335 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-19-002661 · wf-form4_155199883922771.xml · nonDerivative · entry 2 West Neal E · CIK 0001330319 · SVP & CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,427 F3 · shares: Shares earned upon the vesting on March 5, 2019 of certain performance shares granted to the reporting person in 2016 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. On March 5, 2019, the Registrant's compensation committee certified the performance shares payout multiplier based on the level of achievement by the Registrant of certain pre-established performance goals for 2016 through 2018. F3 · price: Shares earned upon the vesting on March 5, 2019 of certain performance shares granted to the reporting person in 2016 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. On March 5, 2019, the Registrant's compensation committee certified the performance shares payout multiplier based on the level of achievement by the Registrant of certain pre-established performance goals for 2016 through 2018. F2 · balance_after: Includes 6,092 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2019 Filed Mar 7, 2019 22:47 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | GrantCommon Stock, par value $0.01 per share | 3,075 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-19-002661 · wf-form4_155199883922771.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · SVP & CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,092 F1 · shares: Grant to the reporting person effective as of March 5, 2019 of restricted stock units under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. All restrictions will lapse on March 5, 2022 or earlier upon the occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2019 of restricted stock units under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. All restrictions will lapse on March 5, 2022 or earlier upon the occurrence of certain specified circumstances. F2 · balance_after: Includes 6,092 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| May 22, 2018 Filed May 23, 2018 21:53 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | SaleCommon Stock, par value $0.01 per share | 2,175 | $110.00 | $239,250.00 |
DisclosureSEC source: 0001628280-18-007119 · wf-form4_152711239293596.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Indirect · By West Family Trust Disclosed balance after: 4,909 F1 · kind: Sales made pursuant to a 10b5-1 plan adopted by the reporting person on May 11, 2018 as part of the reporting person's financial planning to diversify his stockholdings. The plan contemplates the sale of a pre-determined amount of vested shares of common stock of the Registrant held by the reporting person in specified increments subject to designated floor prices. Read SEC document |
| May 15, 2018 Filed May 16, 2018 20:30 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | SaleCommon Stock, par value $0.01 per share | 725 | $103.40 | $74,965.00 |
DisclosureSEC source: 0001628280-18-006857 · wf-form4_152650261082421.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Indirect · By West Family Trust Disclosed balance after: 7,074 F1 · kind: Sales made pursuant to a 10b5-1 plan adopted by the reporting person on May 11, 2018 as part of the reporting person's financial planning to diversify his stockholdings. The plan contemplates the sale of a pre-determined amount of vested shares of common stock of the Registrant held by the reporting person in specified increments subject to designated floor prices. Read SEC document |
| May 15, 2018 Filed Jun 22, 2018 21:56 UTC Amendment | KAISER ALUMINUM CORP KALU · Entity 4302 | SaleCommon Stock, par value $0.01 per share | 725 | $103.40 | $74,965.00 |
DisclosureSEC source: 0001628280-18-008244 · wf-form4a_152970458785417.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Indirect · By West Family Trust Disclosed balance after: 7,084 F1 · kind: Sales made pursuant to a 10b5-1 plan adopted by the reporting person on May 11, 2018 as part of the reporting person's financial planning to diversify his stockholdings. The plan contemplates the sale of a pre-determined amount of vested shares of common stock of the Registrant held by the reporting person in specified increments subject to designated floor prices. Read SEC document |
| March 05, 2018 Filed Mar 7, 2018 23:40 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | Tax withholdingCommon Stock, par value $0.01 per share | 394 | $101.66 | $40,054.04 |
DisclosureSEC source: 0001628280-18-002897 · wf-form4_152046597878571.xml · nonDerivative · entry 4 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,235 F5 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2018 of certain shares granted to the reporting person in 2015 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. F2 · balance_after: Includes 3,017 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2018 Filed Mar 7, 2018 23:40 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | Tax withholdingCommon Stock, par value $0.01 per share | 838 | $101.66 | $85,191.08 |
DisclosureSEC source: 0001628280-18-002897 · wf-form4_152046597878571.xml · nonDerivative · entry 3 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,629 F4 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2018 of the above-referenced performance shares. F2 · balance_after: Includes 3,017 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2018 Filed Mar 7, 2018 23:40 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | GrantCommon Stock, par value $0.01 per share | 2,312 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-18-002897 · wf-form4_152046597878571.xml · nonDerivative · entry 2 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,467 F3 · shares: Shares earned upon the vesting on March 5, 2018 of certain performance shares granted to the reporting person in 2015 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. On March 5, 2018, the Registrant's compensation committee certified the performance shares payout multiplier based on the level of achievement by the Registrant of a certain pre-established performance goal for 2015 through 2017. F3 · price: Shares earned upon the vesting on March 5, 2018 of certain performance shares granted to the reporting person in 2015 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. On March 5, 2018, the Registrant's compensation committee certified the performance shares payout multiplier based on the level of achievement by the Registrant of a certain pre-established performance goal for 2015 through 2017. F2 · balance_after: Includes 3,017 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2018 Filed Mar 7, 2018 23:40 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | GrantCommon Stock, par value $0.01 per share | 860 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-18-002897 · wf-form4_152046597878571.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,155 F1 · shares: Grant to the reporting person effective as of March 5, 2018 of restricted stock units under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. All restrictions will lapse on March 5, 2021 or earlier upon the occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2018 of restricted stock units under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. All restrictions will lapse on March 5, 2021 or earlier upon the occurrence of certain specified circumstances. F2 · balance_after: Includes 3,017 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| April 24, 2017 Filed Apr 26, 2017 23:28 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | SaleCommon Stock, par value $0.01 per share | 2,500 | $84.54 | $211,340.25 |
DisclosureSEC source: 0001628280-17-004349 · wf-form4_149324926127812.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Indirect · By West Family Trust Disclosed balance after: 5,591 Read SEC document |
| March 05, 2017 Filed Mar 7, 2017 23:46 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | Tax withholdingCommon Stock, par value $0.01 per share | 445 | $79.69 | $35,462.05 |
DisclosureSEC source: 0001628280-17-002332 · wf-form4_148893038840353.xml · nonDerivative · entry 4 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,098 F5 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2017 of certain shares granted to the reporting person in 2014 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. F2 · balance_after: Includes 2,157 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2017 Filed Mar 7, 2017 23:46 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | Tax withholdingCommon Stock, par value $0.01 per share | 716 | $79.69 | $57,058.04 |
DisclosureSEC source: 0001628280-17-002332 · wf-form4_148893038840353.xml · nonDerivative · entry 3 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,543 F4 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2017 of the above-referenced performance shares. F2 · balance_after: Includes 2,157 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2017 Filed Mar 7, 2017 23:46 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | GrantCommon Stock, par value $0.01 per share | 1,781 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-17-002332 · wf-form4_148893038840353.xml · nonDerivative · entry 2 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,259 F3 · shares: Shares earned upon the vesting on March 5, 2017 of certain performance shares granted to the reporting person in 2014 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. On March 5, 2017, the Registrant's compensation committee certified the performance shares payout multiplier based on the level of achievement by the Registrant of a certain pre-established performance goal for 2014 through 2016. F3 · price: Shares earned upon the vesting on March 5, 2017 of certain performance shares granted to the reporting person in 2014 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. On March 5, 2017, the Registrant's compensation committee certified the performance shares payout multiplier based on the level of achievement by the Registrant of a certain pre-established performance goal for 2014 through 2016. F2 · balance_after: Includes 2,157 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2017 Filed Mar 7, 2017 23:46 UTC | KAISER ALUMINUM CORP KALU · Entity 4302 | GrantCommon Stock, par value $0.01 per share | 1,052 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-17-002332 · wf-form4_148893038840353.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · VP & Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,478 F1 · shares: Grant to the reporting person effective as of March 5, 2017 of restricted stock units under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. All restrictions will lapse on March 5, 2020 or earlier upon the occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2017 of restricted stock units under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. All restrictions will lapse on March 5, 2020 or earlier upon the occurrence of certain specified circumstances. F2 · balance_after: Includes 2,157 shares acquired pursuant to grants of restricted stock units. 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.