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KALU · Current Report (Form 8-K) · Filed November 17, 2025

Kaiser Aluminum Corp — Current Report (Form 8-K)

Form
8-K
Filed
November 17, 2025
Period
Nov 14, 2025
Ticker
KALU
Accession
0001193125-25-284711
Kaiser Aluminum Corp on Boardroom AlphaView on SEC EDGAR
Boardroom Alpha · Filing insights

Kaiser Aluminum appoints Thomas H. Robb as Senior Vice President – Manufacturing to replace Jason Walsh during Walsh’s health-related leave.

About Kaiser Aluminum Corp
Market cap
$3.1B
1Y TSR
+136.1%
3Y TSR
+42.3%
Board grade
B+
Sector
Basic Materials
CEO
Keith Harvey
Last annual meeting: Jun 4, 2026 · View full Kaiser Aluminum Corp profile →
8-K

 

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

 

FORM 8-K

 

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 14, 2025

 

 

KAISER ALUMINUM CORPORATION

(Exact name of Registrant as Specified in Its Charter)

 

 

Delaware

1-09447

94-3030279

(State or Other Jurisdiction
of Incorporation)

(Commission File Number)

(IRS Employer
Identification No.)

 

 

 

 

 

1550 West McEwen Drive

Suite 500

 

Franklin, Tennessee

 

37067

(Address of Principal Executive Offices)

 

(Zip Code)

 

Registrant’s Telephone Number, Including Area Code: (629) 252-7040

 

 

(Former Name or Former Address, if Changed Since Last Report)

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class

 

Trading
Symbol(s)

 


Name of each exchange on which registered

Common stock, par value $0.01 per share

 

KALU

 

Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

 

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On November 14, 2025, Jason D. Walsh, the Executive Vice President – Manufacturing of Kaiser Aluminum Corporation (the “Company”), notified the Company of his decision to take leave from the Company for health reasons effective as of November 17, 2025. Thomas H. Robb has been appointed as the Company’s Senior Vice President – Manufacturing and will assume Mr. Walsh’s role.

Mr. Robb, age 50, joined the Company in August 2024 and previously served as the Company’s Vice President – Finance and Packaging.

A copy of the press release announcing the appointment of Mr. Robb is attached hereto as Exhibit 99.1 and incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

Exhibit

Number

Description

 99.1

 

Press release dated November 17, 2025.

 104

Cover Page Interactive Data File (embedded within the Inline XBRL document).

 

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 

 

 

Kaiser Aluminum Corporation

 

 

 

 

Date:

November 17, 2025

By:

/s/ Cherrie I. Tsai

 

 

 

Cherrie I. Tsai
Vice President, Deputy General Counsel and Corporate Secretary

 

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Reference

Frequently asked questions

When did Kaiser Aluminum Corp file this 8-K?
Kaiser Aluminum Corp (KALU) filed this Current Report (Form 8-K) with the SEC on November 17, 2025. The accession number assigned by EDGAR is 0001193125-25-284711.
What does an 8-K disclose?
Form 8-K is the SEC's current-report form, used to disclose material events between periodic reports (10-K / 10-Q). Triggers include CEO/CFO departures, acquisitions, bankruptcies, earnings releases, auditor changes, changes in fiscal year, and amendments to corporate governance. Each 8-K is keyed to one or more Item numbers (1.01 through 9.01).
What is the key takeaway from this filing?
Kaiser Aluminum appoints Thomas H. Robb as Senior Vice President – Manufacturing to replace Jason Walsh during Walsh’s health-related leave. This is Boardroom Alpha's one-line summary of the current report; see the full filing text above for the formal disclosure.
What Item codes does an 8-K cover?
An 8-K's Item codes (1.01 through 9.01) specify what kind of event is being disclosed — e.g. Item 1.01 for entering a material agreement, Item 5.02 for departure/election of directors and executive officers, Item 8.01 for other events. The Item codes for this 8-K appear in the filing text above.
Where can I find Kaiser Aluminum Corp's prior current reports on EDGAR?
The SEC EDGAR browser lists every 8-K Kaiser Aluminum Corp has filed under CIK 811596, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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