Form: SCHEDULE 13G/A

Statement of Beneficial Ownership by Certain Investors

July 22, 2026






Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Checkbox checked   Rule 13d-1(b)
Checkbox not checked   Rule 13d-1(c)
Checkbox not checked   Rule 13d-1(d)




schemaVersion:


SCHEDULE 13G



1Names of Reporting Persons

AMUNDI
2Check the appropriate box if a member of a Group (see instructions)

Checkbox not checked  (a)
Checkbox not checked  (b)
3Sec Use Only
4Citizenship or Place of Organization

FRANCE
Number of Shares Beneficially Owned by Each Reporting Person With:
9Aggregate Amount Beneficially Owned by Each Reporting Person

3,489,311.00
10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked
11Percent of class represented by amount in row (9)

5.83 %
12Type of Reporting Person (See Instructions)

HC


SCHEDULE 13G



1Names of Reporting Persons

AMUNDI ASSET MANAGEMENT
2Check the appropriate box if a member of a Group (see instructions)

Checkbox not checked  (a)
Checkbox not checked  (b)
3Sec Use Only
4Citizenship or Place of Organization

FRANCE
Number of Shares Beneficially Owned by Each Reporting Person With:
9Aggregate Amount Beneficially Owned by Each Reporting Person

3,489,311.00
10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked
11Percent of class represented by amount in row (9)

5.83 %
12Type 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)Checkbox not checked   Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)Checkbox not checked   Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)Checkbox not checked   Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)Checkbox not checked   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)Checkbox not checked   An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)Checkbox not checked   An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)Checkbox checked   A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)Checkbox not checked   A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)Checkbox not checked   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)Checkbox not checked   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)Checkbox not checked   Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
 
Item 4.Ownership
(a)Amount beneficially owned:

3,489,311
(b)Percent of class:

5.83%
(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:

1,894,617

 (iii) Sole power to dispose or to direct the disposition of:

0

 (iv) Shared power to dispose or to direct the disposition of:

3,489,311

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


 
AMUNDI
 
Signature:John M. Malone
Name/Title:John M. Malone | Chief Compliance Officer | Power of Attorney
Date:07/22/2026
 
AMUNDI ASSET MANAGEMENT
 
Signature:John M. Malone
Name/Title:John M. Malone | Chief Compliance Officer | Power of Attorney
Date:07/22/2026