Macquarie exits Kaiser Aluminum (KALU) with reported 0% stake

Rhea-AI Filing Summary

Kaiser Aluminum Corp received an amended Schedule 13G/A from Macquarie entities reporting that they no longer hold a reportable stake in the company. Macquarie Group Limited, Macquarie Management Holdings Inc., and Macquarie Investment Management Business Trust each report beneficial ownership of 0 common shares, representing 0.00% of the class as of 12/31/2025. The filing confirms they own 5 percent or less of Kaiser Aluminum’s common shares and state the securities were held in the ordinary course of business without the purpose of influencing control.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Kaiser Aluminum Corp

(Name of Issuer)

Common Shares

(Title of Class of Securities)

483007704

(CUSIP Number)

12/31/2025

(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)

SCHEDULE 13G

CUSIP No. 483007704

1

Names of Reporting Persons

Macquarie Group Limited

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

AUSTRALIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.00 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP No. 483007704

1

Names of Reporting Persons

Macquarie Management Holdings 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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.00 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP No. 483007704

1

Names of Reporting Persons

Macquarie Investment Management Business Trust

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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.00 %

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 West McEwen Drive, Suite 500, Franklin, TN 37067
Item 2.
(a)	Name of person filing: This Schedule 13G is jointly filed by Macquarie Group Limited, Macquarie Management Holdings Inc, and Macquarie Investment Management Business Trust.
(b)	Address or principal business office or, if none, residence: The principal business address of Macquarie Group Limited is Level 1, 1 Elizabeth Street, Sydney, New South Wales, Australia. The principal business address of Macquarie Management Holdings Inc. and Macquarie Investment Management Business Trust is 610 Market Street, Philadelphia, PA 19106.
(c)	Citizenship: Macquarie Group Limited - Sydney, New South Wales, Australia Corporation. Macquarie Management Holdings Inc., Macquarie Investment Management Business Trust- incorporated or formed under the laws of the State of Delaware.
(d)	Title of class of securities: Common Shares
(e)	CUSIP No.: 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: See responses on the cover page hereto
(b)	Percent of class: See responses on the cover page hereto
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See responses on the cover page hereto
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: See responses on the cover page hereto
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	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. See Exhibit A
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.

Macquarie Group Limited

Signature:	/s/ Philip Alexander
Name/Title:	Philip Alexander / Associate Director
Date:	02/13/2026

Signature:	/s/ Charles Glorioso
Name/Title:	Charles Glorioso / Division Director
Date:	02/13/2026

Macquarie Management Holdings Inc

Signature:	/s/ Marty Wolin
Name/Title:	Marty Wolin / Chief Compliance Officer
Date:	02/13/2026

Macquarie Investment Management Business Trust

Signature:	/s/ Marty Wolin
Name/Title:	Marty Wolin / Chief Compliance Officer
Date:	02/13/2026

FAQ

What does the latest Schedule 13G/A for KALU disclose?

The amended Schedule 13G/A shows Macquarie entities now report beneficial ownership of 0 Kaiser Aluminum common shares, or 0.00% of the class as of December 31, 2025. This indicates they no longer hold a reportable ownership stake under SEC rules.

Who filed the Schedule 13G/A related to Kaiser Aluminum (KALU)?

The filing is a joint Schedule 13G/A submitted by Macquarie Group Limited, Macquarie Management Holdings Inc., and Macquarie Investment Management Business Trust. These related entities previously reported holdings in Kaiser Aluminum common shares but now report zero beneficial ownership.

What percentage of Kaiser Aluminum shares do the Macquarie entities own now?

The Macquarie entities report beneficial ownership of 0 common shares of Kaiser Aluminum, representing 0.00% of the outstanding class. This reflects ownership of 5 percent or less, which effectively removes them from the list of significant shareholders under SEC reporting thresholds.

What class of securities is covered in this Kaiser Aluminum (KALU) filing?

The Schedule 13G/A covers Kaiser Aluminum Corp’s common shares identified by CUSIP 483007704. Macquarie Group Limited and its related entities confirm they no longer beneficially own any of these common shares as of the stated event date.

What is the event date referenced in the Kaiser Aluminum Schedule 13G/A?

The event date is December 31, 2025. As of that date, Macquarie Group Limited and its affiliated filers report beneficial ownership of zero Kaiser Aluminum common shares, triggering an amendment to update their Schedule 13G reporting status.

What does “ownership of 5 percent or less” mean for Kaiser Aluminum (KALU)?

The filing states ownership of 5 percent or less of Kaiser Aluminum’s common shares, with the reported figure at 0.00%. This confirms the Macquarie entities no longer qualify as significant beneficial owners that must report a sizable stake under SEC Schedule 13G rules.