Blain Tiffany - 07 Nov 2025 Form 4 Insider Report for KAISER ALUMINUM CORP (KALU)

Reporting relationship: EVP - Sales & Marketing
Issuer ticker: KALU
Reported as of: 07 Nov 2025
Net transaction value: -$812,997
SEC form: 4
Accepted by SEC: 10 Nov 2025, 19:36:30 UTC
Prior SEC filing: 14 Aug 2025
Source filing: View source filing
Reporting owner signature: /s/ John M. Donnan, with power of attorney for Blain Tiffany

Key filing fact

Blain Tiffany filed Form 4 for KAISER ALUMINUM CORP (KALU) on 10 Nov 2025.

Key facts

This page summarizes Blain Tiffany's Form 4 filing for KAISER ALUMINUM CORP (KALU).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 10 Nov 2025, 19:36.

Change

Previous filing in this sequence was filed on 14 Aug 2025.
Current net transaction value: -$812,997.

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 0001323719 Primary reporting owner

Tiffany Blain

Relationship: EVP - Sales & Marketing
Address: 1550 WEST MCEWEN DRIVE, SUITE 500, FRANKLIN
Signature: /s/ John M. Donnan, with power of attorney for Blain Tiffany
Signature date: 10 Nov 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

Sale

Transaction value: $812,997
Shares: -8,656
Change %: -25%
Price: $93.92
Shares after: 26,275
Date: 07 Nov 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

Represents the sale of 8,656 shares in multiple transactions, raging from $93.14 to $94.805 per share, resulting in a weighted average sale price of $93.923 per share. The reporting person undertake to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range.

Footnote F2

Includes 11,044 shares acquired pursuant to grants of restricted stock units.