Nomura reports 714,176 KALU shares (4.4%)

KAISER CORP Schedule 13G/A amendment: Nomura Asset Management International Inc. and Nomura Investment Management Business Trust report beneficial ownership of 714,176 shares of Common Stock, representing 4.4% of the class.

Rhea-AI Filing Summary

KAISER CORP Schedule 13G/A amendment: Nomura Asset Management International Inc. and Nomura Investment Management Business Trust report beneficial ownership of 714,176 shares of Common Stock, representing 4.4% of the class. The percent is calculated using 16,340,124 shares outstanding as of March 31, 2026 per the issuer's Form 10-Q.

The filing lists shared voting and dispositive power of 714,176 shares and is signed by Fernando del Puerto as Managing Director. The filing is submitted as an amendment (Schedule 13G/A) and classifies the position as ownership of 5 percent or less of a class.

Insights

Institutional Ownership Analyst

Nomura reports a passive 4.4% stake in Kaiser Corp.

Nomura Asset Management International Inc. and Nomura Investment Management Business Trust report beneficial ownership of 714,176 shares, with shared voting and dispositive power shown. The filing references the issuer's March 31, 2026 outstanding share count of 16,340,124.

Cash‑flow treatment or planned transactions are not disclosed in the excerpt; subsequent filings would show any material changes in holdings.

Compliance & SEC Filings Specialist

Record is a standard 13G/A amendment with joint filing agreement.

The amendment incorporates cover-page items for voting and dispositive powers and includes a signed joint filing agreement (Exhibit A). The form indicates the position is reported under the 5% or less category.

Timing and any intent classification are those typical to Schedule 13G/A amendments; no transaction or purchase details are provided here.

Key Figures

Reported shares beneficially owned: 714,176 shares Percent of class: 4.4% Shares outstanding used for calculation: 16,340,124 shares

3 metrics

Reported shares beneficially owned 714,176 shares Schedule 13G/A cover-page entries

Percent of class 4.4% Calculated using shares outstanding as of March 31, 2026

Shares outstanding used for calculation 16,340,124 shares Shares outstanding as of <date>March 31, 2026</date> per issuer's Form 10-Q

Key Terms

Schedule 13G/A, Beneficial ownership, Shared Dispositive Power

3 terms

Schedule 13G/A regulatory

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

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficial ownership regulatory

"Item 4. | Ownership (a) | Amount beneficially owned"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Shared Dispositive Power regulatory

"6 | Shared Dispositive Power 714,176.00"

FAQ

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

What stake did Nomura report in KAISER CORP (KALU)?

Nomura reports beneficial ownership of 714,176 shares, equal to 4.4% of common stock. The percentage is calculated using 16,340,124 shares outstanding as of March 31, 2026 per the issuer's Form 10-Q.

Which Nomura entities filed the Schedule 13G/A for KALU?

The filing is made jointly by Nomura Asset Management International Inc. and Nomura Investment Management Business Trust. The filing includes a Joint Filing Agreement as Exhibit A and is signed by Fernando del Puerto.

Does the Schedule 13G/A show voting or dispositive power for Nomura at KALU?

Yes; the cover entries show shared voting power of 714,176 shares and shared dispositive power of 714,176 shares. Sole voting and dispositive powers are reported as 0.00 in the excerpt.

Is the Nomura position classified as active or passive in the filing?

The excerpt is a Schedule 13G/A amendment reporting ownership in the 5% or less category; the filing text does not state active trading intent or plans, and no purchase/sale transactions are disclosed in the provided content.

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

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Accepted by SEC EDGAR 05/15/2026 - 04:26 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. 1)

KAISER ALUMINUM CORP

(Name of Issuer)

Common Stock, par value $0.01 per share

(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

NOMURA ASSET MANAGEMENT INTERNATIONAL 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 714,176.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 714,176.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

714,176.00

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)

4.4 %

12

Type of Reporting Person (See Instructions)

HC

Comment for Type of Reporting Person: The percent of class is calculated based on 16,340,124 shares of Common Stock outstanding as of March 31, 2026, as reported in the Issuer's quarterly report on Form 10-Q for the fiscal quarter ended March 31, 2026 filed with the SEC on April 23, 2026.

SCHEDULE 13G

CUSIP Number(s): 483007704

1

Names of Reporting Persons

NOMURA 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 714,176.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 714,176.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

714,176.00

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)

4.4 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: The percent of class is calculated based on 16,340,124 shares of Common Stock outstanding as of March 31, 2026, as reported in the Issuer's quarterly report on Form 10-Q for the fiscal quarter ended March 31, 2026 filed with the SEC on April 23, 2026.

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, Tennessee, 37067
Item 2.
(a)	Name of person filing: Nomura Asset Management International Inc. Nomura Investment Management Business Trust This Schedule 13G excludes securities beneficially owned, if any, by Nomura Holdings Inc. and certain of its subsidiaries whose beneficial ownership of securities are disaggregated from that of Nomura Asset Management International Inc. and the advisory entities underneath Nomura Asset Management International Inc. in accordance with SEC Release No. 34-39538 (January 12, 1998).
(b)	Address or principal business office or, if none, residence: Each of Nomura Asset Management International Inc. and Nomura Investment Management Business Trust: 100 Independence 610 Market Street Philadelphia, PA 19106-2354
(c)	Citizenship: Each of Nomura Asset Management International Inc. and Nomura Investment Management Business Trust: Delaware
(d)	Title of class of securities: Common Stock, par value $0.01 per share
(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: Items 5-11 of the cover pages are incorporated by reference.
(b)	Percent of class: Items 5-11 of the cover pages are incorporated by reference.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Items 5-11 of the cover pages are incorporated by reference.
	(ii) Shared power to vote or to direct the vote: Items 5-11 of the cover pages are incorporated by reference.
	(iii) Sole power to dispose or to direct the disposition of: Items 5-11 of the cover pages are incorporated by reference.
	(iv) Shared power to dispose or to direct the disposition of: Items 5-11 of the cover pages are incorporated by reference.
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.
	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.

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

Signature:	/s/ Fernando del Puerto
Name/Title:	Fernando del Puerto, Managing Director
Date:	05/15/2026

NOMURA INVESTMENT MANAGEMENT BUSINESS TRUST

Signature:	/s/ Fernando del Puerto
Name/Title:	Fernando del Puerto, Managing Director
Date:	05/15/2026

Exhibit Information

Exhibit A - Joint Filing Agreement