Harvey Keith 4

4 · KAISER ALUMINUM CORP · Filed Mar 9, 2026

AI-generated summary of this filing

Updated Mar 9, 2026

Kaiser Aluminum CEO Harvey Keith Receives Award; Shares Withheld

What Happened

Harvey Keith, President & CEO and a director of Kaiser Aluminum (KALU), received equity awards that vested on March 5, 2026 and had shares withheld to satisfy tax withholding obligations. The filing shows grants/awards of 17,795 and 47,895 shares (awarded at $0.00) and the withholding/disposition of 17,722 and 6,859 shares at $125.84 per share valued at $2,230,136 and $863,137 respectively (total withheld value ≈ $3,093,273). These transactions reflect awards and tax-withholding on vesting (not an open-market sale for cash).

Key Details

Transaction date: March 5, 2026; filing date: March 9, 2026 (Form 4 accession 0001193125-26-098643).
Prices reported for shares withheld/disposed: $125.84 per share.
Shares awarded (reported as acquisitions): 17,795 and 47,895 (awarded at $0.00).
Shares withheld to cover taxes (reported as dispositions): 17,722 and 6,859 (total 24,581 shares; ≈ $3.09M).
Footnotes: awards are restricted stock units (RSUs) under the company’s 2021 Equity and Incentive Compensation Plan; performance-share payouts for 2023–2025 were certified; withheld shares were used to satisfy withholding tax on vesting.
Shares owned after the transactions are not provided in the excerpt of the filing.

Context

These entries are award vesting and tax-withholding transactions (transaction codes A and F). The withheld shares are routine tax-withholding (common when RSUs or performance shares vest) and should not be interpreted the same as an executive selling shares on the open market.
The performance-share payout was certified by the compensation committee, which is why performance shares vested on March 5, 2026. This filing documents compensation-related equity vesting rather than a directional bet by the insider.

Form 4

Period: 2026-03-05

DirectorPresident & CEO

Transactions

Award
Common Stock, par value $0.01 per share
[F1][F2]
2026-03-05+17,795→ 121,026 total
Award
Common Stock, par value $0.01 per share
[F3][F2]
2026-03-05+47,895→ 168,921 total
Tax Payment
Common Stock, par value $0.01 per share
[F4][F2]
2026-03-05$125.84/sh−17,722$2,230,136→ 151,199 total
Tax Payment
Common Stock, par value $0.01 per share
[F5][F6]
2026-03-05$125.84/sh−6,859$863,137→ 144,340 total

Footnotes (6)

[F1]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]Includes 89,994 shares acquired pursuant to grants of restricted stock units.
[F3]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.
[F4]Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2026 of the above-referenced performance shares.
[F5]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]Includes 72,565 shares acquired pursuant to grants of restricted stock units.

Signature

/s/ Cherrie I. Tsai, with power of attorney for Keith Harvey|2026-03-09

1 file