Blain Tiffany - 12 Aug 2025 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Role
EVP - Sales & Marketing
Signature
/s/ John M. Donnan, with power of attorney for Blain Tiffany
Issuer symbol
KALU
Transactions as of
12 Aug 2025
Net transactions value
-$521,695
Form type
4
Filing time
14 Aug 2025, 17:00:09 UTC
Previous filing
07 Mar 2025
Next filing
10 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Tiffany Blain EVP - Sales & Marketing 1550 WEST MCEWEN DRIVE, SUITE 500, FRANKLIN /s/ John M. Donnan, with power of attorney for Blain Tiffany 14 Aug 2025 0001323719

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 Tax liability $521,695 -6,982 -17% $74.72 34,931 12 Aug 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares withheld to satisfy the withholding tax obligations resulting from the vesting on August 12, 2025 of certain restricted stock units granted to the reporting person in 2020 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan.
F2 Includes 11,044 shares acquired pursuant to grants of restricted stock units.