James D. Hoffman - Sep 18, 2025 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Role
Director
Signature
/s/ John M. Donnan, with power of attorney for James D. Hoffman
Stock symbol
KALU
Transactions as of
Sep 18, 2025
Transactions value $
$78,725
Form type
4
Date filed
9/19/2025, 05:15 PM
Previous filing
May 13, 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
HOFFMAN JAMES DONALD Director 1550 W. MCEWEN DRIVE, SUITE 500, FRANKLIN /s/ John M. Donnan, with power of attorney for James D. Hoffman 2025-09-19 0001447652

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction KALU Common Stock, par value $0.01 per share Award $0 +1.36K $0.00 1.36K Sep 18, 2025 Direct F1
transaction KALU Common Stock, par value $0.01 per share Award $78.7K +1.02K +74.98% $77.03 2.39K Sep 18, 2025 Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 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.
F2 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 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.