California Water Service (NYSE: CWT) director receives 2,816-share equity award

Rhea-AI Filing Summary

California Water Service Group director Charles R. Patton received a grant of 2,816 shares of common stock as restricted stock. The grant was made on 3/3/2026 under the company’s equity incentive plan at no cash cost per share.

The restricted stock vests on a one-year cliff schedule, with 100% of the shares vesting on the first anniversary of the grant date. After this award, Patton directly holds a total of 9,062.27 common shares, which includes shares previously acquired through dividend reinvestment.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Patton Charles R.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,816	$0.00	--

Holdings After Transaction: Common Stock — 9,062.27 shares (Direct)

Footnotes (1)

1. Restricted stock granted on 3/3/2026 pursuant to the California Water Service Group equity incentive plan in a transaction exempt under Rule 16-b-3 vests with a one-year cliff vesting term, vesting 100% on the first anniversary of the grant date. Includes shares acquired through Dividend Reinvestment.

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^*

Patton Charles R.

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/03/2026

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	03/03/2026		A		2,816(1)	A	$0.0	9,062.27(2)	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. Restricted stock granted on 3/3/2026 pursuant to the California Water Service Group equity incentive plan in a transaction exempt under Rule 16-b-3 vests with a one-year cliff vesting term, vesting 100% on the first anniversary of the grant date.

2. Includes shares acquired through Dividend Reinvestment.

	By: /s/ Michelle R. Mortensen For: Charles Patton	03/05/2026
	** 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 director Charles R. Patton report?

Charles R. Patton reported receiving a grant of 2,816 shares of California Water Service Group common stock. The shares were issued as restricted stock under the company’s equity incentive plan, with no cash purchase price per share and specific vesting conditions attached.

When do Charles R. Patton’s newly granted CWT restricted shares vest?

The restricted shares vest on a one-year cliff schedule, with 100% vesting on the first anniversary of the March 3, 2026 grant date. Until vesting, the award remains subject to the terms of California Water Service Group’s equity incentive plan and applicable restrictions.

How many CWT shares does Charles R. Patton hold after this Form 4 transaction?

After the reported grant, Charles R. Patton directly holds a total of 9,062.27 shares of California Water Service Group common stock. This figure includes the newly granted restricted shares and shares that were previously acquired through the company’s dividend reinvestment program.

Was Charles R. Patton’s CWT stock award a market purchase or a grant?

The transaction was a stock grant, not a market purchase. Patton received 2,816 restricted shares at a reported price of $0.0000 per share, reflecting an equity incentive award under California Water Service Group’s equity incentive plan rather than an open-market buy.

What type of security did Charles R. Patton receive from California Water Service Group?

He received restricted shares of California Water Service Group common stock. The award consists of 2,816 restricted shares granted under the company’s equity incentive plan, subject to a one-year cliff vesting schedule and the plan’s standard terms and conditions.