Thomas H. Robb - 23 Feb 2026 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Role
EVP - Manufacturing
Signature
/s/ Cherrie I. Tsai, with power of attorney for Thomas H. Robb
Issuer symbol
KALU
Transactions as of
23 Feb 2026
Net transactions value
$0
Form type
4
Filing time
25 Feb 2026, 16:57:28 UTC
Previous filing
14 Jan 2026
Next filing
09 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Robb Thomas H. EVP - Manufacturing 1550 W. MCEWEN DRIVE,, SUITE 500, FRANKLIN /s/ Cherrie I. Tsai, with power of attorney for Thomas H. Robb 25 Feb 2026 0002105031

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 +440 +3% $0.000000 14,944 23 Feb 2026 Direct F1, F2
* 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 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 Shares acquired pursuant to grants of restricted stock units.