State Street and SSGA disclose Kaiser Corp holdings (KALU) — 8.2% largest

Rhea-AI Filing Summary

SSGA Funds Management, Inc. and State Street Corporation reported Schedule 13G holdings in Kaiser Corp common stock. State Street discloses 1,332,923 shares beneficially owned, representing 8.2% of the class. SSGA Funds Management discloses 968,922 shares, representing 6% of the class. The filings list shared voting and shared dispositive powers and identify related State Street affiliate entities. Signatures are dated 05/12/2026.

Key Figures

State Street beneficially owned: 1,332,923 shares State Street ownership % of class: 8.2% SSGA Funds Management beneficially owned: 968,922 shares +3 more

6 metrics

State Street beneficially owned 1,332,923 shares ownership reported in Schedule 13G

State Street ownership % of class 8.2% percent of class reported in Item 4

SSGA Funds Management beneficially owned 968,922 shares ownership reported in Schedule 13G

SSGA ownership % of class 6% percent of class reported in Item 4

CUSIP 483007704 Kaiser Corp common stock identifier

Filing signature date 05/12/2026 signature dates on the Schedule 13G

Key Terms

Schedule 13G, beneficially owned, shared dispositive power, shared voting power

4 terms

Schedule 13G regulatory

"Item 1. (a) Name of issuer: KAISER CORP"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficially owned financial

"Item 4. (a) Amount beneficially owned: 1332923.00"

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.

shared dispositive power regulatory

"(iv) Shared power to dispose or to direct the disposition of: 1,332,923"

shared voting power regulatory

"(ii) Shared power to vote or to direct the vote: 1,289,072"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

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Accepted by SEC EDGAR 05/12/2026 - 11:20 AM Learn about SEC filing dates

FAQ

What stake does State Street report in Kaiser Corp (KALU)?

State Street reports 1,332,923 shares beneficially owned, equal to 8.2% of Kaiser Corp common stock, with shared voting and dispositive powers as disclosed in the filing.

How many shares does SSGA Funds Management report for KALU?

SSGA Funds Management reports 968,922 shares beneficially owned, representing 6% of Kaiser Corp common stock and showing shared voting and dispositive authority in the filing.

Who signed the Schedule 13G for these holdings?

The filing is signed by Elizabeth Schaefer, Senior Vice President and Chief Accounting Officer, and Brian Harris, Chief Compliance Officer, with dates shown as 05/12/2026.

Does the filing list affiliates or subsidiaries linked to the holdings?

Yes; the filing identifies State Street affiliated entities including State Street Global Advisors offices in multiple jurisdictions as the related investment-advisory entities.

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)

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

STATE STREET CORPORATION

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

MASSACHUSETTS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,289,072.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,332,923.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,332,923.00

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)

8.2 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 483007704

1

Names of Reporting Persons

SSGA FUNDS MANAGEMENT, 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

MASSACHUSETTS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 966,168.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 968,922.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

968,922.00

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)

6 %

12

Type of Reporting Person (See Instructions)

IA

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, TENNESSEE, 37067
Item 2.
(a)	Name of person filing: SSGA FUNDS MANAGEMENT, INC.;STATE STREET CORPORATION;
(b)	Address or principal business office or, if none, residence: ONE CONGRESS STREET, SUITE 1, BOSTON MA 02114, UNITED STATES (FOR ALL REPORTING PERSONS)
(c)	Citizenship: MA
(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: 1332923.00
(b)	Percent of class: 8.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 1,289,072
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 1,332,923
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. NOT APPLICABLE
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. SSGA FUNDS MANAGEMENT, INC. (IA);STATE STREET GLOBAL ADVISORS (JAPAN) CO., LTD. (IA);STATE STREET GLOBAL ADVISORS EUROPE LIMITED (IA);STATE STREET GLOBAL ADVISORS LIMITED (IA);STATE STREET GLOBAL ADVISORS TRUST COMPANY (IA);STATE STREET GLOBAL ADVISORS, LTD. (IA);
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. NOT APPLICABLE
Item 9.	Notice of Dissolution of Group.
	Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5. 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.

STATE STREET CORPORATION

Signature:	ELIZABETH SCHAEFER
Name/Title:	SENIOR VICE PRESIDENT, CHIEF ACCOUNTING OFFICER
Date:	05/12/2026

SSGA FUNDS MANAGEMENT, INC.

Signature:	BRIAN HARRIS
Name/Title:	CHIEF COMPLIANCE OFFICER
Date:	05/12/2026