Iulian Gheorghe - 05 Mar 2026 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Role
SVP - Adv Eng & Innovation
Signature
/s/ Cherrie I. Tsai, with power of attorney for Iulian Gheorghe
Issuer symbol
KALU
Transactions as of
05 Mar 2026
Net transactions value
$0
Form type
4
Filing time
09 Mar 2026, 16:30:17 UTC
Previous filing
20 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gheorghe Iulian SVP - Adv Eng & Innovation 1550 W. MCEWEN DRIVE, SUITE 500, FRANKLIN /s/ Cherrie I. Tsai, with power of attorney for Iulian Gheorghe 09 Mar 2026 0002104071

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 +852 +21% $0.000000* 4,839 05 Mar 2026 Direct F1, F2
transaction KALU Common Stock, par value $0.01 per share Tax liability -216 -4.5% $125.84* 4,623 05 Mar 2026 Direct F3, F4
* 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 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 4,660 shares acquired pursuant to grants of restricted stock units.
F3 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 Includes 3,918 shares acquired pursuant to grants of restricted stock units.