BlackRock reports 14.8% stake in Kaiser Corp

BlackRock, Inc. reports beneficial ownership of 2,401,692 shares of Kaiser Corp common stock, representing 14.8% of the class.

Rhea-AI Filing Summary

BlackRock, Inc. reports beneficial ownership of 2,401,692 shares of Kaiser Corp common stock, representing 14.8% of the class. The filing states BlackRock has sole voting power over 2,376,449 shares and sole dispositive power over 2,401,692 shares. The filing identifies iShares Core S&P Small-Cap ETF as a holder with an interest exceeding 5%.

Key Figures

Beneficially owned: 2,401,692 shares Percent of class: 14.8% Sole voting power: 2,376,449 shares +2 more

5 metrics

Beneficially owned 2,401,692 shares Item 4(a) amount beneficially owned

Percent of class 14.8% Item 4(b) percent of class

Sole voting power 2,376,449 shares Item 4(c)(i) sole power to vote

Sole dispositive power 2,401,692 shares Item 4(c)(iii) sole power to dispose

CUSIP 483007704 Cover page CUSIP for Kaiser Corp common stock

Key Terms

Beneficially owned, Sole dispositive power, Investment Company Act of 1940

3 terms

Beneficially owned regulatory

"reflects the securities beneficially owned, or deemed to be beneficially owned"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole dispositive power regulatory

"Sole Dispositive Power 2,401,692.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Investment Company Act of 1940 regulatory

"investment company registered under the Investment Company Act of 1940"

A U.S. federal law that sets the rulebook for pooled investment vehicles such as mutual funds, exchange-traded funds and similar money managers, requiring them to register with regulators, disclose holdings and fees, limit conflicts of interest, and follow governance standards. It matters to investors because these protections and transparency rules act like a referee and scoreboard, helping people compare funds, trust that managers follow fair practices, and spot hidden costs or risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Kaiser Corp (KALU) shares does BlackRock report owning?

BlackRock reports owning 2,401,692 shares of Kaiser Corp common stock. This figure is listed under Item 4(a) as the amount beneficially owned in the filing.

What percentage of Kaiser Corp does BlackRock beneficially own?

BlackRock reports beneficial ownership equal to 14.8% of Kaiser Corp's common stock. The percent of class is provided directly in Item 4(b) of the filing.

How much voting power does BlackRock have in KALU?

BlackRock has reported sole voting power over 2,376,449 shares. The filing lists sole and shared voting/dispositive powers in Item 4(c)(i)–(iv).

Does BlackRock report any other large holders of KALU in the filing?

Yes. The filing identifies iShares Core S&P Small-Cap ETF as having an interest exceeding 5% of Kaiser Corp common stock. The ETF is named in Item 6.

Who signed the Schedule 13G/A for BlackRock regarding KALU?

Spencer Fleming, Managing Director, signed the amendment. The signature block shows the signatory and a filing date of 04/24/2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/24/2026 - 04:11 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 8)

KAISER ALUMINUM CORP

(Name of Issuer)

Common Stock

(Title of Class of Securities)

483007704

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 483007704

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,376,449.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,401,692.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,401,692.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.8 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: KAISER ALUMINUM CORP
(b)	Address of issuer's principal executive offices: 1550 W. MCEWEN DRIVE, SUITE 500 FRANKLIN TN 37067
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 483007704
Item 4.	Ownership
(a)	Amount beneficially owned: 2401692
(b)	Percent of class: 14.8 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2376449
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2401692
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The interest of 1 such person, iShares Core S&P Small-Cap ETF, in the common stock of KAISER ALUMINUM CORP is more than five percent of the total outstanding common stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/24/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7