James P. Lynch - 05 Sep 2025 Form 4 Insider Report for CALIFORNIA WATER SERVICE GROUP (CWT)

Role: SVP CFO and Treasurer
Signature: By: /s/ Michelle R. Mortensen For: James P. Lynch
Issuer symbol: CWT
Transactions as of: 05 Sep 2025
Transactions value $: -$2,260
Form type: 4
Filing time: 09 Sep 2025, 16:37:11 UTC
Previous filing: 09 Jun 2025
Next filing: 09 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lynch James Patrick	SVP CFO and Treasurer	1720 NORTH FIRST STREET, SAN JOSE	By: /s/ Michelle R. Mortensen For: James P. Lynch	09 Sep 2025	0001502013

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CWT	Common Stock	Tax liability	-$2.26K	-48	-1.15%	$47.09	4.12K	05 Sep 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the number of shares withheld and surrendered to the issuer to satisfy the tax withholding obligations that arose in connection with the vesting of Restricted Stock (RSA) Award granted on June 5, 2024.
F2	Includes shares acquired through the Employee Stock Purchase Program.