California Water Service Group: Amundi reports 5.32%

The reported stake separates shared voting authority over 1,775,076 shares from shared disposition authority over 1,516,512 shares.

Rhea-AI Filing Summary

California Water Service Group (CWT) is the issuer whose shares Amundi and Amundi Asset Management report beneficially owning: 3,291,588 common shares, or 5.32% of the class. They report shared voting power over 1,775,076 shares and shared dispositive power over 1,516,512 shares, with zero sole voting and sole dispositive power. The named relevant subsidiaries include KBI Global Investors (North America) Ltd and KBI Global Investors Ltd.

Key Figures

Beneficial ownership: 3,291,588 shares Percent of class: 5.32% Shared voting power: 1,775,076 shares +1 more

4 metrics

Beneficial ownership 3,291,588 shares Reported by Amundi and Amundi Asset Management

Percent of class 5.32% Reported beneficial ownership

Shared voting power 1,775,076 shares Shares over which shared voting power is reported

Shared dispositive power 1,516,512 shares Shares over which shared dispositive power is reported

Key Terms

beneficially owned, Shared Voting Power, Shared Dispositive Power

3 terms

beneficially owned regulatory

"Amount beneficially owned: 3,291,588"

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 Voting Power regulatory

"Shared Voting Power 1,775,076.00"

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.

Shared Dispositive Power regulatory

"Shared Dispositive Power 1,516,512.00"

FAQ

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

How many CWT shares do Amundi and Amundi Asset Management report owning?

They report beneficial ownership of 3,291,588 California Water Service Group common shares, equal to 5.32% of the class. They report shared voting power over 1,775,076 shares and shared dispositive power over 1,516,512 shares.

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

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Available on EDGAR 10/26/2026 - 03:57 PM EDT Accepted by SEC EDGAR 10/26/2026 - 03:57 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. 2)

CALIFORNIA WATER SERVICE GROUP

(Name of Issuer)

Common Shares, par value $0.01

(Title of Class of Securities)

130788102

(CUSIP Number)

09/30/2026

(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): 130788102

1

Names of Reporting Persons

AMUNDI

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

FRANCE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,775,076.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,516,512.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,291,588.00

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)

5.32 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 130788102

1

Names of Reporting Persons

AMUNDI ASSET 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

FRANCE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,775,076.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,516,512.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,291,588.00

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)

5.32 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CALIFORNIA WATER SERVICE GROUP
(b)	Address of issuer's principal executive offices: 1720 North First Street, San Jose, CA 95112
Item 2.
(a)	Name of person filing: Amundi Amundi Asset Management
(b)	Address or principal business office or, if none, residence: Amundi: 91-93 boulevard Pasteur, 75015 Paris, France Amundi Asset Management: 91-93 boulevard Pasteur, 75015 Paris, France
(c)	Citizenship: Both Amundi and Amundi Asset Management are organized under the laws of the Republic of France.
(d)	Title of class of securities: Common Shares, par value $0.01
(e)	CUSIP No.: 130788102
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: 3,291,588
(b)	Percent of class: 5.32%
(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: 1,775,076
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 1,516,512
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.
	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. Amundi Asset Management KBI Global Investors (North America) Ltd KBI Global Investors Ltd
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.

AMUNDI

Signature:	John M. Malone
Name/Title:	John M. Malone | Chief Compliance Officer | Power of Attorney
Date:	10/26/2026

AMUNDI ASSET MANAGEMENT

Signature:	John M. Malone
Name/Title:	John M. Malone | Chief Compliance Officer | Power of Attorney
Date:	10/26/2026