Vanguard Capital Management (KALU) reports 5.1% Kaiser Aluminum ownership in 13G

Rhea-AI Filing Summary

Vanguard Capital Management LLC, together with certain affiliated entities, reports beneficial ownership of 833,479 shares of Kaiser Aluminum Corp common stock, representing 5.1% of the class as of June 30, 2026. Vanguard has sole voting power over 126,318 shares and sole dispositive power over all 833,479 shares, with no shared voting or dispositive power.

The position reflects securities held by Vanguard funds and other client accounts over which Vanguard and specified affiliates exercise voting and/or dispositive authority. Vanguard and related investment companies and accounts have the right to receive or direct dividends and sale proceeds, and no other single person’s interest in these securities exceeds 5% of the class.

Key Figures

Beneficial ownership: 833,479 shares Percent of class: 5.1% Sole voting power: 126,318 shares +3 more

6 metrics

Beneficial ownership 833,479 shares Kaiser Aluminum Corp common stock beneficially owned as of June 30, 2026

Percent of class 5.1% Portion of Kaiser Aluminum common stock class owned by Vanguard Capital Management

Sole voting power 126,318 shares Shares of Kaiser Aluminum over which Vanguard has sole voting authority

Shared voting power 0 shares Shares of Kaiser Aluminum with shared voting authority

Sole dispositive power 833,479 shares Kaiser Aluminum shares over which Vanguard has sole power to dispose

Shared dispositive power 0 shares Kaiser Aluminum shares with shared dispositive authority

Key Terms

beneficially owned, sole voting power, sole dispositive power, percent of class, +1 more

5 terms

beneficially owned financial

"this reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard"

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 voting power financial

"5 | Sole Voting Power 126,318.00 6 | Shared Voting Power 0.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"7 | Sole Dispositive Power 833,479.00 8 | Shared Dispositive Power 0.00"

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.

percent of class financial

"Item 4. | Ownership (a) | Amount beneficially owned: 833479 (b) | Percent of class: 5.1 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

Investment Company Act of 1940 regulatory

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

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.

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

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FAQ

What percentage of Kaiser Aluminum (KALU) shares does Vanguard Capital Management report owning?

Vanguard Capital Management reports beneficial ownership of 5.1% of the outstanding common stock of Kaiser Aluminum Corp, representing 833,479 shares as of June 30, 2026, across Vanguard-managed funds and client accounts.

How many Kaiser Aluminum (KALU) shares does Vanguard Capital Management have voting power over?

Vanguard Capital Management has sole voting power over 126,318 shares of Kaiser Aluminum common stock and no shared voting power, according to the Schedule 13G ownership disclosure.

What is Vanguard Capital Management’s dispositive power over Kaiser Aluminum (KALU) shares?

Vanguard Capital Management reports sole dispositive power over 833,479 shares of Kaiser Aluminum common stock and no shared dispositive power, meaning it can unilaterally decide on the disposition of those shares.

Which Vanguard affiliates are included in the Kaiser Aluminum (KALU) 13G filing?

The filing states that the reported securities are beneficially owned or deemed owned by Vanguard Capital Management LLC and affiliates including Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC, and Vanguard Investments Australia Ltd.

Does any other person hold more than 5% indirect interest in Vanguard’s Kaiser Aluminum (KALU) position?

No. The disclosure states that no one other person's interest in the Kaiser Aluminum securities reported by Vanguard Capital Management and related accounts is more than 5% of the class.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Kaiser Aluminum Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

483007704

(CUSIP Number)

06/30/2026

(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

Vanguard Capital Management

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

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 126,318.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 833,479.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

833,479.00

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)

5.10 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: 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 Vanguard Capital Management LLC and the following affiliates of Vanguard Capital Management LLC or business divisions of such affiliates: Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC and Vanguard Investments Australia Ltd. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Capital Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Capital Management LLC, or business divisions of such subsidiaries, whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Kaiser Aluminum Corp
(b)	Address of issuer's principal executive offices: 1550 W Mcewen Dr, Suite 500, Franklin, TN, 37067
Item 2.
(a)	Name of person filing: Vanguard Capital Management
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 483007704
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 833479
(b)	Percent of class: 5.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 126318
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 833479
	(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. Vanguard Capital Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
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.

Vanguard Capital Management

Signature:	My Trieu-Gatt
Name/Title:	Authorized Signatory, Head of Global Fund Administration
Date:	07/31/2026