California Water Service (CWT) director granted 2,816 restricted shares in equity plan

Rhea-AI Filing Summary

California Water Service Group director Yvonne Aida Maldonado reported receiving a grant of 2,816 shares of common stock as restricted stock under the company’s equity incentive plan. These shares were granted at no cash cost and are scheduled to vest 100% one year after the 3/3/2026 grant date. Following this award, she directly holds a total of 12,634.69 shares, which includes shares acquired through dividend reinvestment.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Maldonado Yvonne Aida

Role Director

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

Holdings After Transaction: Common Stock — 12,634.69 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
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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^*

Maldonado Yvonne Aida

(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	12,634.69(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: Yvonne Maldonado	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 California Water Service Group (CWT) disclose for Yvonne Aida Maldonado?

California Water Service Group reported that director Yvonne Aida Maldonado received a grant of 2,816 restricted shares of common stock. The award was made under the company’s equity incentive plan on March 3, 2026, and was recorded as an acquisition rather than an open-market purchase.

At what price were the new California Water Service Group (CWT) shares granted to the director?

The 2,816 shares granted to director Yvonne Aida Maldonado carried a stated price per share of $0.00. This reflects a stock-based compensation award under the equity incentive plan rather than a cash purchase in the open market or a standard share sale transaction.

How and when do the restricted shares granted to the CWT director vest?

The restricted stock granted to Yvonne Aida Maldonado vests on a one-year cliff schedule. According to the disclosure, 100% of the 2,816 restricted shares will vest on the first anniversary of the March 3, 2026 grant date, assuming the vesting conditions of the equity plan are satisfied.

How many California Water Service Group (CWT) shares does the director own after this award?

After the restricted stock grant, director Yvonne Aida Maldonado directly holds 12,634.69 shares of California Water Service Group common stock. This total includes the newly granted restricted shares as well as additional shares that were previously acquired through the company’s dividend reinvestment program.

Is the Form 4 transaction for CWT’s director a purchase or an equity award?

The Form 4 lists the transaction as a grant or award acquisition coded “A,” not an open-market purchase. It reflects 2,816 restricted shares of California Water Service Group common stock issued under the equity incentive plan, with no cash price paid per share in the transaction.

Does the California Water Service Group (CWT) filing mention dividend reinvestment for the director’s holdings?

Yes. The disclosure states that the total holdings for director Yvonne Aida Maldonado include shares acquired through dividend reinvestment. This means some of her 12,634.69 directly held shares came from automatic reinvestment of paid dividends into additional common stock.