Jason Walsh - 12 Aug 2025 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Reporting relationship: EVP - Manufacturing
Issuer ticker: KALU
Reported as of: 12 Aug 2025
Net transaction value: -$540,674
SEC form: 4
Accepted by SEC: 14 Aug 2025, 17:00:09 UTC
Prior SEC filing: 07 Mar 2025
Source filing: View source filing
Reporting owner signature: /s/ John M. Donnan, with power of attorney for Jason Walsh

Key filing fact

Jason Walsh filed Form 4 for KAISER ALUMINUM CORP (KALU) on 14 Aug 2025.

Key facts

This page summarizes Jason Walsh's Form 4 filing for KAISER ALUMINUM CORP (KALU).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 14 Aug 2025, 17:00.

Change

Previous filing in this sequence was filed on 07 Mar 2025.
Current net transaction value: -$540,674.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001608777 Primary reporting owner

Walsh Jason

Relationship: EVP - Manufacturing
Address: 1550 WEST MCEWEN DRIVE, SUITE 500, FRANKLIN
Signature: /s/ John M. Donnan, with power of attorney for Jason Walsh
Signature date: 14 Aug 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KALU transaction

Common Stock, par value $0.01 per share

Tax liability

Transaction value: $540,674
Shares: -7,236
Change %: -14%
Price: $74.72
Shares after: 42,770
Date: 12 Aug 2025
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote 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.

Footnote F2

Includes 14,431 shares acquired pursuant to grants of restricted stock units.