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Ownership Document
|
| Schema Version: X0508 |
| Document Type: 4 |
| Period of Report: 3/5/24 |
| Issuer: |
| Issuer CIK: 811596 |
| Issuer Name: KAISER ALUMINUM CORP |
| Issuer Trading Symbol: KALU |
| Reporting Owner: |
| Reporting Owner ID: |
| | Owner CIK: 1330319 |
| | Owner Name: West Neal E |
| Reporting Owner Address: |
| | Owner Street 1: 1550 WEST MCEWEN DRIVE |
| | Owner Street 2: SUITE 500 |
| | Owner City: FRANKLIN |
| | Owner State: TN |
| | Owner ZIP Code: 37067 |
| | Owner State Description: |
| Reporting Owner Relationship: |
| | Is Director? No |
| | Is Officer? Yes |
| | Is Ten Percent Owner? No |
| | Is Other? No |
| | Officer Title: EVP & CFO |
| Aff 10b5 One? No |
| Non-Derivative Table: |
| Non-Derivative Transaction: |
| | Security Title: |
| | | Value: Common Stock, par value $0.01 per share |
| | Transaction Date: |
| | | Value: 3/5/24 |
| | Transaction Coding: |
| | | Transaction Form Type: 4 |
| | | Transaction Code: A |
| | | Equity Swap Involved? No |
| | Transaction Amounts: |
| | | Transaction Shares: |
| Value: 7,335 |
| Footnote ID: F1 |
| | | Transaction Price Per Share: |
| Value: 0 |
| Footnote ID: F1 |
| | | Transaction Acquired-Disposed Code: |
| Value: A |
| | Post-Transaction Amounts: |
| | | Shares Owned Following Transaction: |
| Value: 28,508 |
| Footnote ID: F2 |
| | Ownership Nature: |
| | | Direct or Indirect Ownership: |
| Value: D |
| Non-Derivative Transaction: |
| | Security Title: |
| | | Value: Common Stock, par value $0.01 per share |
| | Transaction Date: |
| | | Value: 3/5/24 |
| | Transaction Coding: |
| | | Transaction Form Type: 4 |
| | | Transaction Code: F |
| | | Equity Swap Involved? No |
| | | Footnote ID: F3 |
| | Transaction Amounts: |
| | | Transaction Shares: |
| Value: 3,268 |
| | | Transaction Price Per Share: |
| Value: 71.76 |
| | | Transaction Acquired-Disposed Code: |
| Value: D |
| | Post-Transaction Amounts: |
| | | Shares Owned Following Transaction: |
| Value: 25,240 |
| Footnote ID: F4 |
| | Ownership Nature: |
| | | Direct or Indirect Ownership: |
| Value: D |
| Non-Derivative Holding: |
| | Security Title: |
| | | Value: Common Stock, par value $0.01 per share |
| | Post-Transaction Amounts: |
| | | Shares Owned Following Transaction: |
| Value: 3,049 |
| | Ownership Nature: |
| | | Direct or Indirect Ownership: |
| Value: I |
| | | Nature of Ownership: |
| Value: By West Family Trust |
| Footnotes: |
| Footnote - F1: Grant to the reporting person effective as of March 5, 2024 of restricted stock units under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. All restrictions will lapse on March 5, 2027 or earlier upon the occurrence of certain specified circumstances. |
| Footnote - F2: Includes 28,508 shares acquired pursuant to grants of restricted stock units. |
| Footnote - F3: Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2024 of certain restricted stock units granted to the reporting person in 2021 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. |
| Footnote - F4: Includes 15,263 shares acquired pursuant to grants of restricted stock units. |
| Owner Signature: |
| Signature Name: /s/ Cherrie I. Tsai, with power of attorney for John M. Donnan |
| Signature Date: 3/7/24 |
