Amundi reports 5.82% stake in California Water Service Group (CWT)

Rhea-AI Filing Summary

California Water Service Group reports Amundi entities beneficially own 3,470,997 common shares (5.82%). The filing lists shared voting power of 1,887,617 shares and shared dispositive power of 3,470,997 shares as reported on 03/31/2026. The disclosure identifies Amundi and Amundi Asset Management (France) and related subsidiaries and is signed by a Chief Compliance Officer.

Insights

Institutional Ownership Analyst

Amundi holds a meaningful 5.82% stake via shared voting and dispositive arrangements.

The Schedule 13G shows 3,470,997 shares beneficially owned with 1,887,617 shares of shared voting power, indicating discretionary voting influence exercised jointly with other managers or accounts. The filing names Amundi Asset Management and related entities as the reporting persons.

Position stability depends on whether this is passive holdings reporting under Schedule 13G; subsequent filings could change status if ownership or intent shifts.

Key Figures

Beneficial ownership: 3,470,997 shares Percent of class: 5.82% Shared voting power: 1,887,617 shares +1 more

4 metrics

Beneficial ownership 3,470,997 shares Amount beneficially owned as of 03/31/2026

Percent of class 5.82% Percent of common shares reported

Shared voting power 1,887,617 shares Shared power to vote reported in Item 4(c)(ii)

Report date 03/31/2026 Statement of holdings date in the filing

Key Terms

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

4 terms

Schedule 13G regulatory

"Item 1. Name of issuer: CALIFORNIA WATER SERVICE GROUP"

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. Ownership (a) Amount beneficially owned: 3,470,997"

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 financial

"Item 4. (iv) Shared power to dispose or to direct the disposition of: 3,470,997"

shared voting power financial

"Item 4. (ii) Shared power to vote or to direct the vote: 1,887,617"

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.

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

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Accepted by SEC EDGAR 04/10/2026 - 09:55 AM Learn about SEC filing dates

FAQ

What stake does Amundi report in CWT?

Amundi reports beneficial ownership of 3,470,997 shares (5.82%). The filing lists this amount as the total beneficially owned and shows the percentage of the class.

How much voting power does Amundi control in CWT?

Amundi reports shared voting power of 1,887,617 shares. The filing indicates no sole voting power and that voting authority is shared for those shares.

Does Amundi have dispositive power over the shares of CWT?

Yes. The filing reports shared dispositive power for 3,470,997 shares, indicating Amundi shares authority to direct disposition jointly rather than solely for those shares.

Which Amundi entities filed the Schedule 13G for CWT?

The filing names Amundi and Amundi Asset Management and lists related subsidiaries including CPR Asset Management and KBI Global Investors entities as involved reporting persons.

What date does the ownership data reflect?

The Schedule 13G shows the ownership position dated 03/31/2026 and the signature block dated 04/10/2026, indicating the reporting period and filing execution dates.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

CALIFORNIA WATER SERVICE GROUP

(Name of Issuer)

Common Shares, par value $0.01

(Title of Class of Securities)

130788102

(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): 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 1,887,617.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,470,997.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,470,997.00

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)

5.82 %

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 1,887,617.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,470,997.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,470,997.00

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)

5.82 %

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 Number(s): 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: 3,470,997
(b)	Percent of class: 5.82%
(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: 1,887,617
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 3,470,997
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 CPR 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:	04/10/2026

AMUNDI ASSET MANAGEMENT

Signature:	John M. Malone
Name/Title:	John M. Malone | Chief Compliance Officer | Power of Attorney
Date:	04/10/2026