Last 12 months
Inside the activity.
0 purchase rows · 10 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 1 |
| Dec 2025 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Feb 2026 | 0 | 2 |
| Mar 2026 | 0 | 0 |
| Apr 2026 | 0 | 7 |
| May 2026 | 0 | 0 |
| Jun 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Aug 2026 | 0 | 0 |
| Sep 2026 | 0 | 0 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
Purchases/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 | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| June 04, 2026 Filed Jun 5, 2026 22:19 UTC |
arnold michael cDirector
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-260114 · ownership.xml · nonDerivative · entry 1 arnold michael c · CIK 0001234013 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 11,445 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 22:11 UTC |
Glas Kimberly ThompsonDirector
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-260101 · ownership.xml · nonDerivative · entry 1 Glas Kimberly Thompson · CIK 0002051548 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,466 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:53 UTC |
STEBBINS DONALD JDirector
|
GrantCommon Stock, par value $0.01 per share | 631 | $178.10 | $112,381.10 |
DisclosureSEC source: 0001193125-26-260063 · ownership.xml · nonDerivative · entry 2 STEBBINS DONALD J · CIK 0001193795 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 15,407 F2 · shares: Stock received by the reporting person under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated, at such person's election in lieu of all or a portion of the reporting person's annual cash retainer for serving as a member of the Board of Directors of Kaiser Aluminum Corporation and chair or a member of one or more committees of the Board of Directors. F3 · price: Equal to the average closing price of the Issuer's common stock as reported by the Nasdaq Stock Market, LLC for the 20 trading days prior to June 4, 2026. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:53 UTC |
STEBBINS DONALD JDirector
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-260063 · ownership.xml · nonDerivative · entry 1 STEBBINS DONALD J · CIK 0001193795 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 14,776 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:50 UTC |
Wilcox BrettDirector
|
GrantCommon Stock, par value $0.01 per share | 328 | $178.10 | $58,416.80 |
DisclosureSEC source: 0001193125-26-260058 · ownership.xml · nonDerivative · entry 2 Wilcox Brett · CIK 0001289226 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,019 F2 · shares: Stock received by the reporting person under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated, at such person's election in lieu of all or a portion of the reporting person's annual cash retainer for serving as a member of the Board of Directors of Kaiser Aluminum Corporation and chair or a member of one or more committees of the Board of Directors. F3 · price: Equal to the average closing price of the Issuer's common stock as reported by the Nasdaq Stock Market, LLC for the 20 trading days prior to June 4, 2026. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:50 UTC |
Wilcox BrettDirector
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-260058 · ownership.xml · nonDerivative · entry 1 Wilcox Brett · CIK 0001289226 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,691 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:46 UTC |
Grimley Richard P.Director
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-260047 · ownership.xml · nonDerivative · entry 1 Grimley Richard P. · CIK 0001972491 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,364 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:49 UTC |
HOFFMAN JAMES DONALDDirector
|
GrantCommon Stock, par value $0.01 per share | 589 | $178.10 | $104,900.90 |
DisclosureSEC source: 0001193125-26-260055 · ownership.xml · nonDerivative · entry 2 HOFFMAN JAMES DONALD · CIK 0001447652 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,760 F2 · shares: Stock received by the reporting person under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated, at such person's election in lieu of all or a portion of the reporting person's annual cash retainer for serving as a member of the Board of Directors of Kaiser Aluminum Corporation and chair or a member of one or more committees of the Board of Directors. F3 · price: Equal to the average closing price of the Issuer's common stock as reported by the Nasdaq Stock Market, LLC for the 20 trading days prior to June 4, 2026. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:49 UTC |
HOFFMAN JAMES DONALDDirector
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-260055 · ownership.xml · nonDerivative · entry 1 HOFFMAN JAMES DONALD · CIK 0001447652 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,171 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · balance_after: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:17 UTC |
MINOR GLENDA JDirector
|
GrantCommon Stock, par value $0.01 per share | 335 | $178.10 | $59,663.50 |
DisclosureSEC source: 0001193125-26-259941 · ownership.xml · nonDerivative · entry 2 MINOR GLENDA J · CIK 0001254782 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,516 F2 · shares: Stock received by the reporting person under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated, at such person's election in lieu of all or a portion of the reporting person's annual cash retainer for serving as a member of the Board of Directors of Kaiser Aluminum Corporation and chair or a member of one or more committees of the Board of Directors. F3 · price: Equal to the average closing price of the Issuer's common stock as reported by the Nasdaq Stock Market, LLC for the 20 trading days prior to June 4, 2026. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:17 UTC |
MINOR GLENDA JDirector
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-259941 · ownership.xml · nonDerivative · entry 1 MINOR GLENDA J · CIK 0001254782 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,181 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| June 04, 2026 Filed Jun 5, 2026 21:15 UTC |
Foster David ADirector
|
GrantCommon Stock, par value $0.01 per share | 786 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-259940 · ownership.xml · nonDerivative · entry 1 Foster David A · CIK 0001372886 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 24,332 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on June 4, 2027. Read SEC document |
| April 29, 2026 Filed May 1, 2026 20:30 UTC |
Harvey KeithDirector · President & CEO
|
SaleCommon Stock, par value $0.01 per share | 3,031 | $173.13 | $524,757.03 |
DisclosureSEC source: 0001193125-26-201545 · ownership.xml · nonDerivative · entry 1 Harvey Keith · CIK 0001551869 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 94,308 F1 · price: Represents the sale of 3,031 shares in multiple transactions, ranging from $173.00 to $173.80 per share, resulting in a weighted average sale price of $173.13 per share. The reporting person undertake to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. F2 · balance_after: Includes 72,565 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| April 29, 2026 Filed May 1, 2026 20:40 UTC |
Grimley Richard P.Director
|
SaleCommon Stock, par value $0.01 per share | 1,524 | $171.52 | $261,396.48 |
DisclosureSEC source: 0001193125-26-201607 · ownership.xml · nonDerivative · entry 1 Grimley Richard P. · CIK 0001972491 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,578 F1 · price: Represents the sale of 1,524 shares in multiple transactions, ranging from $171.25 to $171.74 per share, resulting in a weighed average sale price of $.171.52 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. Read SEC document |
| April 28, 2026 Filed Apr 29, 2026 20:30 UTC |
DONNAN JOHN MALCOLMEVP, CAO and GC
|
GiftCommon Stock, par value $0.01 per share | 1,500 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-191904 · ownership.xml · nonDerivative · entry 2 DONNAN JOHN MALCOLM · CIK 0001311544 · EVP, CAO and GC 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 28,200 F3 · price: Bona fide gift by the reporting person to a charitable trust for no consideration. F2 · balance_after: Includes 17,422 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| April 28, 2026 Filed Apr 29, 2026 20:30 UTC |
West Neal EEVP & CFO
|
SaleCommon Stock, par value $0.01 per share | 5,000 | $173.29 | $866,450.00 |
DisclosureSEC source: 0001193125-26-191901 · ownership.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Indirect · By West Family Trust Disclosed balance after: 19,091 Read SEC document |
| April 27, 2026 Filed Apr 29, 2026 20:30 UTC |
Wilcox BrettDirector
|
SaleCommon Stock, par value $0.01 per share | 15,000 | $174.44 | $2,616,600.00 |
DisclosureSEC source: 0001193125-26-191905 · ownership.xml · nonDerivative · entry 1 Wilcox Brett · CIK 0001289226 · Director 10b5-1 filing: No plan indicated Ownership: Indirect · By Wilcox Revocable Trust Disclosed balance after: 9,887 F1 · price: Represents the sale of 15,000 shares in multiple transactions, ranging from $173.60 to $175.23 per share, resulting in a weighed average sale price of $.174.44 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. Read SEC document |
| April 27, 2026 Filed Apr 29, 2026 20:30 UTC |
DONNAN JOHN MALCOLMEVP, CAO and GC
|
SaleCommon Stock, par value $0.01 per share | 2,743 | $178.20 | $488,806.71 |
DisclosureSEC source: 0001193125-26-191904 · ownership.xml · nonDerivative · entry 1 DONNAN JOHN MALCOLM · CIK 0001311544 · EVP, CAO and GC 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 29,700 F1 · price: Represents the sale of 2,743 shares in multiple transactions, ranging from $175.96 to $179.41 per share, resulting in a weighted average sale price of $178.20 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. F2 · balance_after: Includes 17,422 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| April 27, 2026 Filed Apr 29, 2026 20:30 UTC |
Gheorghe IulianSVP - Adv Eng & Innovation
|
SaleCommon Stock, par value $0.01 per share | 175 | $174.22 | $30,488.50 |
DisclosureSEC source: 0001193125-26-191902 · ownership.xml · nonDerivative · entry 1 Gheorghe Iulian · CIK 0002104071 · SVP - Adv Eng & Innovation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,448 F1 · balance_after: Includes 3,918 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| April 27, 2026 Filed Apr 29, 2026 20:30 UTC |
Harvey KeithDirector · President & CEO
|
SaleCommon Stock, par value $0.01 per share | 47,001 | $175.09 | $8,229,405.09 |
DisclosureSEC source: 0001193125-26-191900 · ownership.xml · nonDerivative · entry 1 Harvey Keith · CIK 0001551869 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 97,339 F1 · price: Represents the sale of 47,001 shares in multiple transactions, ranging from $175.00 to $175.87 per share, resulting in a weighted average sale price of $175.09 per share. The reporting person undertake to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. F2 · balance_after: Includes 72,565 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Harvey KeithDirector · President & CEO
|
Tax withholdingCommon Stock, par value $0.01 per share | 6,859 | $125.84 | $863,136.56 |
DisclosureSEC source: 0001193125-26-098643 · ownership.xml · nonDerivative · entry 4 Harvey Keith · CIK 0001551869 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 144,340 F5 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of certain restricted stock units granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. F6 · balance_after: Includes 72,565 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Harvey KeithDirector · President & CEO
|
Tax withholdingCommon Stock, par value $0.01 per share | 17,722 | $125.84 | $2,230,136.48 |
DisclosureSEC source: 0001193125-26-098643 · ownership.xml · nonDerivative · entry 3 Harvey Keith · CIK 0001551869 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 151,199 F4 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of the above-referenced performance shares. F2 · balance_after: Includes 89,994 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Harvey KeithDirector · President & CEO
|
GrantCommon Stock, par value $0.01 per share | 47,895 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098643 · ownership.xml · nonDerivative · entry 2 Harvey Keith · CIK 0001551869 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 168,921 F3 · shares: Shares earned upon the vesting on March 5, 2026 of certain performance shares granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. On March 5, 2026, 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 2023 through 2025. F3 · price: Shares earned upon the vesting on March 5, 2026 of certain performance shares granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. On March 5, 2026, 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 2023 through 2025. F2 · balance_after: Includes 89,994 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Harvey KeithDirector · President & CEO
|
GrantCommon Stock, par value $0.01 per share | 17,795 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098643 · ownership.xml · nonDerivative · entry 1 Harvey Keith · CIK 0001551869 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 121,026 F1 · shares: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F2 · balance_after: Includes 89,994 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Robb Thomas H.EVP - Manufacturing
|
GrantCommon Stock, par value $0.01 per share | 2,954 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098641 · ownership.xml · nonDerivative · entry 1 Robb Thomas H. · CIK 0002105031 · EVP - Manufacturing 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,898 F1 · shares: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier upon the occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier upon the occurrence of certain specified circumstances. F2 · balance_after: Shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Gheorghe IulianSVP - Adv Eng & Innovation
|
Tax withholdingCommon Stock, par value $0.01 per share | 216 | $125.84 | $27,181.44 |
DisclosureSEC source: 0001193125-26-098638 · ownership.xml · nonDerivative · entry 2 Gheorghe Iulian · CIK 0002104071 · SVP - Adv Eng & Innovation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,623 F3 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of certain restricted stock units granted to the reporting person in 2025 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. F4 · balance_after: Includes 3,918 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Gheorghe IulianSVP - Adv Eng & Innovation
|
GrantCommon Stock, par value $0.01 per share | 852 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098638 · ownership.xml · nonDerivative · entry 1 Gheorghe Iulian · CIK 0002104071 · SVP - Adv Eng & Innovation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,839 F1 · shares: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F2 · balance_after: Includes 4,660 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Barger Hugh J. IIIEVP - Sales & Marketing
|
GrantCommon Stock, par value $0.01 per share | 1,686 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098636 · ownership.xml · nonDerivative · entry 1 Barger Hugh J. III · CIK 0002104698 · EVP - Sales & Marketing 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,711 F1 · shares: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier upon the occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier upon the occurrence of certain specified circumstances. F2 · balance_after: Shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Narayan VijaiVP, Corp Ctrl & CAO
|
Tax withholdingCommon Stock, par value $0.01 per share | 97 | $125.84 | $12,206.48 |
DisclosureSEC source: 0001193125-26-098637 · ownership.xml · nonDerivative · entry 3 Narayan Vijai · CIK 0001978222 · VP, Corp Ctrl & CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,517 F4 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of certain restricted stock units granted to the reporting person on June 7, 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. F5 · balance_after: Includes 4,926 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Narayan VijaiVP, Corp Ctrl & CAO
|
Tax withholdingCommon Stock, par value $0.01 per share | 482 | $125.84 | $60,654.88 |
DisclosureSEC source: 0001193125-26-098637 · ownership.xml · nonDerivative · entry 2 Narayan Vijai · CIK 0001978222 · VP, Corp Ctrl & CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,614 F3 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of certain restricted stock units granted to the reporting person on March 5, 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. F2 · balance_after: Includes 7,088 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
Narayan VijaiVP, Corp Ctrl & CAO
|
GrantCommon Stock, par value $0.01 per share | 733 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098637 · ownership.xml · nonDerivative · entry 1 Narayan Vijai · CIK 0001978222 · VP, Corp Ctrl & CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,096 F1 · shares: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F2 · balance_after: Includes 7,088 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
West Neal EEVP & CFO
|
Tax withholdingCommon Stock, par value $0.01 per share | 1,761 | $125.84 | $221,604.24 |
DisclosureSEC source: 0001193125-26-098635 · ownership.xml · nonDerivative · entry 4 West Neal E · CIK 0001330319 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 29,706 F5 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of certain restricted stock units granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. F6 · balance_after: Includes 18,390 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
West Neal EEVP & CFO
|
Tax withholdingCommon Stock, par value $0.01 per share | 3,694 | $125.84 | $464,852.96 |
DisclosureSEC source: 0001193125-26-098635 · ownership.xml · nonDerivative · entry 3 West Neal E · CIK 0001330319 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 31,467 F4 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of the above-referenced performance shares. F2 · balance_after: Includes 22,865 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
West Neal EEVP & CFO
|
GrantCommon Stock, par value $0.01 per share | 12,296 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098635 · ownership.xml · nonDerivative · entry 2 West Neal E · CIK 0001330319 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 35,161 F3 · shares: Shares earned upon the vesting on March 5, 2026 of certain performance shares granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. On March 5, 2026, 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 2023 through 2025. F3 · price: Shares earned upon the vesting on March 5, 2026 of certain performance shares granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. On March 5, 2026, 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 2023 through 2025. F2 · balance_after: Includes 22,865 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
West Neal EEVP & CFO
|
GrantCommon Stock, par value $0.01 per share | 3,905 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098635 · ownership.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,865 F1 · shares: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier uponthe occurrence of certain specified circumstances. F2 · balance_after: Includes 22,865 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
DONNAN JOHN MALCOLMEVP, CAO and GC
|
Tax withholdingCommon Stock, par value $0.01 per share | 1,669 | $125.84 | $210,026.96 |
DisclosureSEC source: 0001193125-26-098631 · ownership.xml · nonDerivative · entry 4 DONNAN JOHN MALCOLM · CIK 0001311544 · EVP, CAO and GC 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 32,443 F5 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of certain restricted stock units granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. F6 · balance_after: Includes 17,422 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
DONNAN JOHN MALCOLMEVP, CAO and GC
|
Tax withholdingCommon Stock, par value $0.01 per share | 3,441 | $125.84 | $433,015.44 |
DisclosureSEC source: 0001193125-26-098631 · ownership.xml · nonDerivative · entry 3 DONNAN JOHN MALCOLM · CIK 0001311544 · EVP, CAO and GC 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 34,112 F4 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of the above-referenced performance shares. F2 · balance_after: Includes 21,661 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
DONNAN JOHN MALCOLMEVP, CAO and GC
|
GrantCommon Stock, par value $0.01 per share | 11,649 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098631 · ownership.xml · nonDerivative · entry 2 DONNAN JOHN MALCOLM · CIK 0001311544 · EVP, CAO and GC 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 37,553 F3 · shares: Shares earned upon the vesting on March 5, 2026 of certain performance shares granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. On March 5, 2026, 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 2023 through 2025. F3 · price: Shares earned upon the vesting on March 5, 2026 of certain performance shares granted to the reporting person in 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. On March 5, 2026, 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 2023 through 2025. F2 · balance_after: Includes 21,661 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| March 05, 2026 Filed Mar 9, 2026 20:30 UTC |
DONNAN JOHN MALCOLMEVP, CAO and GC
|
GrantCommon Stock, par value $0.01 per share | 3,699 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-098631 · ownership.xml · nonDerivative · entry 1 DONNAN JOHN MALCOLM · CIK 0001311544 · EVP, CAO and GC 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 25,904 F1 · shares: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier upon the occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of March 5, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on March 5, 2029 or earlier upon the occurrence of certain specified circumstances. F2 · balance_after: Includes 21,661 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| February 23, 2026 Filed Feb 25, 2026 21:57 UTC |
Robb Thomas H.EVP - Manufacturing
|
GrantCommon Stock, par value $0.01 per share | 440 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-071971 · ownership.xml · nonDerivative · entry 1 Robb Thomas H. · CIK 0002105031 · EVP - Manufacturing 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 14,944 F1 · shares: Grant to the reporting person effective as of February 23, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions on 220 restricted stock units will lapse on February 23, 2029 or earlier upon the occurrence of certain specified circumstances, and all restrictions on the remaining 220 restricted stock units will lapse on February 23, 2031 or earlier upon the occurrence of certain specified circumstances. F1 · price: Grant to the reporting person effective as of February 23, 2026 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions on 220 restricted stock units will lapse on February 23, 2029 or earlier upon the occurrence of certain specified circumstances, and all restrictions on the remaining 220 restricted stock units will lapse on February 23, 2031 or earlier upon the occurrence of certain specified circumstances. F2 · balance_after: Shares acquired pursuant to grants of restricted stock units. Read SEC document |
| February 23, 2026 Filed Feb 25, 2026 21:55 UTC |
DONNAN JOHN MALCOLMEVP, CAO and GC
|
SaleCommon Stock, par value $0.01 per share | 18,461 | $125.08 | $2,309,024.34 |
DisclosureSEC source: 0001193125-26-071959 · ownership.xml · nonDerivative · entry 1 DONNAN JOHN MALCOLM · CIK 0001311544 · EVP, CAO and GC 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,205 F1 · price: Represents the sale of 18,461 shares in multiple transactions, raging from $125.00 to $126.39 per share, resulting in a weighted average sale price of $125.0758 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. F2 · balance_after: Includes 17,962 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| February 23, 2026 Filed Feb 25, 2026 21:54 UTC |
West Neal EEVP & CFO
|
SaleCommon Stock, par value $0.01 per share | 5,000 | $121.72 | $608,600.00 |
DisclosureSEC source: 0001193125-26-071951 · ownership.xml · nonDerivative · entry 1 West Neal E · CIK 0001330319 · EVP & CFO 10b5-1 filing: No plan indicated Ownership: Indirect · By West Family Trust Disclosed balance after: 12,775 F1 · price: Represents the sale of 5,000 shares in multiple transactions, ranging from $120.00 to $125.69 per share, resulting in a weighted average sale price of $121.72 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. Read SEC document |
| February 19, 2026 Filed Feb 20, 2026 21:45 UTC |
Gheorghe IulianSVP - Adv Eng & Innovation
|
Tax withholdingCommon Stock, par value $0.01 per share | 76 | $127.05 | $9,655.80 |
DisclosureSEC source: 0001193125-26-061525 · ownership.xml · nonDerivative · entry 1 Gheorghe Iulian · CIK 0002104071 · SVP - Adv Eng & Innovation 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,987 F1 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on February 19, 2026 of certain restricted stock units granted to the reporting person in 2025 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. F2 · balance_after: Includes 3,808 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| November 21, 2025 Filed Nov 25, 2025 22:00 UTC |
Harvey KeithDirector · President & CEO
|
Disposition to issuerCommon Stock, par value $0.01 per share | 33,000 | $90.34 | $2,981,220.00 |
DisclosureSEC source: 0001193125-25-297550 · ownership.xml · nonDerivative · entry 1 Harvey Keith · CIK 0001551869 · Director · President & CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 103,231 F1 · price: Represents the sale of 33,000 shares in multiple transactions, ranging from $89.02 to $91.42 per share, resulting in a weighted average sale price of $90.34 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. The sales were made as part of the reporting person's financial planning to diversify his stockholdings. F2 · balance_after: Includes 72,199 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| November 07, 2025 Filed Nov 11, 2025 00:36 UTC |
Tiffany BlainEVP - Sales & Marketing
|
SaleCommon Stock, par value $0.01 per share | 8,656 | $93.92 | $812,997.49 |
DisclosureSEC source: 0001193125-25-274835 · ownership.xml · nonDerivative · entry 1 Tiffany Blain · CIK 0001323719 · EVP - Sales & Marketing 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 26,275 F1 · price: Represents the sale of 8,656 shares in multiple transactions, raging from $93.14 to $94.805 per share, resulting in a weighted average sale price of $93.923 per share. The reporting person undertake to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range. F2 · balance_after: Includes 11,044 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| November 07, 2025 Filed Nov 11, 2025 00:26 UTC |
Narayan VijaiVP, Corp Ctrl & CAO
|
Tax withholdingCommon Stock, par value $0.01 per share | 163 | $94.53 | $15,408.39 |
DisclosureSEC source: 0001193125-25-274828 · ownership.xml · nonDerivative · entry 1 Narayan Vijai · CIK 0001978222 · VP, Corp Ctrl & CAO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,363 F1 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on November 7, 2025 of certain restricted stock units granted to the reporting person in 2019 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. F2 · balance_after: Includes 6,355 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| September 18, 2025 Filed Sep 19, 2025 21:15 UTC |
HOFFMAN JAMES DONALDDirector
|
GrantCommon Stock, par value $0.01 per share | 1,022 | $77.03 | $78,724.66 |
DisclosureSEC source: 0001193125-25-209295 · ownership.xml · nonDerivative · entry 2 HOFFMAN JAMES DONALD · CIK 0001447652 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,385 F2 · shares: Stock received by the reporting person under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated, at such person's election in lieu of all or a portion of the reporting person's annual cash retainer for serving as a member of the Board of Directors of Kaiser Aluminum Corporation, and chair or a member of one or more committees of the Board of Directors. F3 · price: Equal to the average closing price of the Issuer's common stock as reported by the Nasdaq Stock Market, LLC for the twenty trading days prior to September 18, 2025. Read SEC document |
| September 18, 2025 Filed Sep 19, 2025 21:15 UTC |
HOFFMAN JAMES DONALDDirector
|
GrantCommon Stock, par value $0.01 per share | 1,363 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-25-209295 · ownership.xml · nonDerivative · entry 1 HOFFMAN JAMES DONALD · CIK 0001447652 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,363 F1 · shares: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on September 18, 2026. F1 · price: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan, as amended and restated. All restrictions will lapse on September 18, 2026. Read SEC document |
| August 12, 2025 Filed Aug 14, 2025 21:00 UTC |
Tiffany BlainEVP - Sales & Marketing
|
Tax withholdingCommon Stock, par value $0.01 per share | 6,982 | $74.72 | $521,695.04 |
DisclosureSEC source: 0000950170-25-109031 · ownership.xml · nonDerivative · entry 1 Tiffany Blain · CIK 0001323719 · EVP - Sales & Marketing 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 34,931 F1 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on August 12, 2025 of certain restricted stock units granted to the reporting person in 2020 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. F2 · balance_after: Includes 11,044 shares acquired pursuant to grants of restricted stock units. Read SEC document |
| August 12, 2025 Filed Aug 14, 2025 21:00 UTC |
Walsh JasonEVP - Manufacturing
|
Tax withholdingCommon Stock, par value $0.01 per share | 7,236 | $74.72 | $540,673.92 |
DisclosureSEC source: 0000950170-25-109032 · ownership.xml · nonDerivative · entry 1 Walsh Jason · CIK 0001608777 · EVP - Manufacturing 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 42,770 F1 · kind: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on August 12, 2025 of certain restricted stock units granted to the reporting person in 2020 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. F2 · balance_after: Includes 14,431 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.