Vijai Narayan - 05 Mar 2026 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Reporting relationship: VP, Corp Ctrl & CAO
Issuer ticker: KALU
Reported as of: 05 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 09 Mar 2026, 16:30:14 UTC
Prior SEC filing: 10 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ John M. Donnan, with power of attorney for Vijai Narayan

Key filing fact

Vijai Narayan filed Form 4 for KAISER ALUMINUM CORP (KALU) on 09 Mar 2026.

Key facts

This page summarizes Vijai Narayan's Form 4 filing for KAISER ALUMINUM CORP (KALU).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 09 Mar 2026, 16:30.

Change

Previous filing in this sequence was filed on 10 Nov 2025.
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 0001978222 Primary reporting owner

Narayan Vijai

Relationship: VP, Corp Ctrl & CAO
Address: 1550 WEST MCEWEN DRIVE, SUITE 500, FRANKLIN
Signature: /s/ John M. Donnan, with power of attorney for Vijai Narayan
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: +733
Change %: +10%
Price: $0.000000^*
Shares after: 8,096
Date: 05 Mar 2026
Ownership: Direct
Footnotes: F1, F2

KALU transaction

Common Stock, par value $0.01 per share

Tax liability

Transaction value
Shares: -482
Change %: -6%
Price: $125.84^*
Shares after: 7,614
Date: 05 Mar 2026
Ownership: Direct
Footnotes: F2, F3

KALU transaction

Common Stock, par value $0.01 per share

Tax liability

Transaction value
Shares: -97
Change %: -1.3%
Price: $125.84^*
Shares after: 7,517
Date: 05 Mar 2026
Ownership: Direct
Footnotes: F4, F5

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 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 uponthe occurrence of certain specified circumstances.

Footnote F2

Includes 7,088 shares acquired pursuant to grants of restricted stock units.

Footnote 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 on March 5, 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan.

Footnote F4

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 on June 7, 2023 under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan.

Footnote F5

Includes 4,926 shares acquired pursuant to grants of restricted stock units.