Hugh J. Barger III - 05 Mar 2026 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Reporting relationship: EVP - Sales & Marketing
Issuer ticker: KALU
Reported as of: 05 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 09 Mar 2026, 16:30:16 UTC
Prior SEC filing: 12 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Cherrie I. Tsai, with power of attorney for Hugh J. Barger, III

Key filing fact

Hugh J. Barger III filed Form 4 for KAISER ALUMINUM CORP (KALU) on 09 Mar 2026.

Key facts

This page summarizes Hugh J. Barger III's Form 4 filing for KAISER ALUMINUM CORP (KALU).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 09 Mar 2026, 16:30.

Change

Previous filing in this sequence was filed on 12 Jan 2026.
Current net transaction value: $0.

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 0002104698 Primary reporting owner

Barger Hugh J. III

Relationship: EVP - Sales & Marketing
Address: 1550 W. MCEWEN DRIVE, SUITE 500, FRANKLIN
Signature: /s/ Cherrie I. Tsai, with power of attorney for Hugh J. Barger, III
Signature date: 09 Mar 2026

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

Award

Transaction value
Shares: +1,686
Change %: +42%
Price: $0.000000^*
Shares after: 5,711
Date: 05 Mar 2026
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

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 upon the occurrence of certain specified circumstances.

Footnote F2

Shares acquired pursuant to grants of restricted stock units.