California Water Service Group (CWT) officer reports tax share withholding in Form 4

Rhea-AI Filing Summary

California Water Service Group executive reports routine share withholding for taxes. Senior Vice President, Customer Service & Chief Sustainability Officer Shannon C. Dean filed a Form 4 showing two small transactions in company common stock. On December 5, 2025, 73 shares were withheld and surrendered to the company at $44.88 per share to cover tax obligations from the vesting of a Restricted Stock Award granted on June 5, 2024. On December 7, 2025, an additional 57 shares were withheld at $44.88 per share tied to a Restricted Stock Award granted on March 7, 2023. After these transactions, Dean directly beneficially owns 22,166.246 shares of common stock, which includes shares acquired through the Employee Stock Purchase Program.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Dean Shannon C

Role SR. VP, Cust Svc & Chief Sust

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	57	$44.88	$3K
Tax Withholding	Common Stock	73	$44.88	$3K

Holdings After Transaction: Common Stock — 22,166.246 shares (Direct)

Footnotes (1)

1. 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. 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 March 7, 2023. Includes shares acquired through the Employee Stock Purchase Program.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Dean Shannon C

(Last) (First) (Middle)

1720 NORTH FIRST STREET

(Street)

SAN JOSE CA 95112

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CALIFORNIA WATER SERVICE GROUP [ CWT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SR. VP, Cust Svc & Chief Sust

3. Date of Earliest Transaction (Month/Day/Year)
12/05/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/05/2025		F		73(1)	D	$44.88	22,223.246	D
Common Stock	12/07/2025		F		57(2)	D	$44.88	22,166.246(3)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. 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 March 7, 2023.

3. Includes shares acquired through the Employee Stock Purchase Program.

	By: /s/ Michelle R. Mortensen For: Shannon C. Dean	12/09/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did CWT report in this Form 4?

The filing reports that executive Shannon C. Dean had small amounts of California Water Service Group (CWT) common stock withheld and surrendered to the company to cover tax obligations triggered by vesting Restricted Stock Awards.

How many CWT shares were withheld for taxes in this filing?

The report shows 73 shares of common stock withheld on December 5, 2025 and 57 shares withheld on December 7, 2025, all at a price of $44.88 per share.

What is Shannon C. Dean’s role at California Water Service Group (CWT)?

Shannon C. Dean is an officer of California Water Service Group, serving as Senior Vice President, Customer Service & Chief Sustainability, as indicated in the filing.

How many CWT shares does the reporting person own after these transactions?

Following the reported tax-withholding transactions, Shannon C. Dean directly beneficially owns 22,166.246 shares of California Water Service Group common stock.

Do the reported CWT holdings include shares from an employee stock purchase plan?

Yes. The filing notes that the beneficially owned total includes shares acquired through the company’s Employee Stock Purchase Program.

What is the reason for the share withholding reported for CWT?

The shares were withheld and surrendered to California Water Service Group to satisfy tax withholding obligations arising from the vesting of Restricted Stock (RSA) awards granted on June 5, 2024 and March 7, 2023.