California Water (NYSE: CWT) VP sells 3,892 common shares at $44

Rhea-AI Filing Summary

California Water Service Group Vice President of Operations Michael S. Mares Jr. reported an open-market sale of 3,892 shares of common stock at $44.00 per share. After this transaction, he directly holds 8,524.6 shares. The sale was executed in multiple trades, each at the same price, with details available upon request.

Insights

Equity ownership analyst

Routine insider sale of a modest share block with remaining holdings disclosed.

Vice President of Operations Michael S. Mares Jr. executed an open-market sale of 3,892 shares of California Water Service Group common stock at $44.00 per share. The transaction was reported as a standard sale in the non-derivative section, without associated option exercises or derivative activity.

Following the sale, Mares directly holds 8,524.6 shares, indicating he retains an ongoing equity stake in the company. The footnote notes that the sale occurred through multiple transactions, all at the same price, and offers to provide detailed trade breakdowns upon request, which is typical transparency language for insiders.

There is no reference to options, restricted stock, or derivative positions in this report, and no mention of a Rule 10b5-1 trading plan in the provided data. Overall, this appears to be a routine liquidity transaction rather than a structural change in insider ownership.

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^*

Mares Michael S JR

(Last) (First) (Middle)

1720 N. FIRST STREET

(Street)

SAN JOSE CALIFORNIA 95112

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Vice President, Operations

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2026

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

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

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

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	03/20/2026		S		3,892(1)	D	$44	8,524.6	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. The sale of 3,892 shares executed in multiple transactions with share price of $44.00. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or security holder of the issuer full information regarding the number of shares and price at which the transaction was effected.

Remarks:

	/s/ Michelle R. Mortensen on behalf of Michael S Mares, Jr.	03/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did CWT report for Michael S. Mares Jr.?

California Water Service Group reported that Vice President of Operations Michael S. Mares Jr. sold 3,892 shares of common stock. The transaction was an open-market sale at a reported price of $44.00 per share, according to the Form 4 filing details.

At what price were the CWT shares sold in this Form 4 filing?

The reported shares of California Water Service Group common stock were sold at $44.00 per share. A footnote explains the 3,892 shares were executed in multiple transactions, all at that same share price, with full trade details available upon request from the reporting person.

How many CWT shares does Michael S. Mares Jr. hold after this sale?

After the reported sale, Michael S. Mares Jr. directly holds 8,524.6 shares of California Water Service Group common stock. This post-transaction balance is disclosed in the Form 4 and shows he maintains a continuing ownership position in the company’s equity.

Was the CWT insider transaction a buy or sell by Michael S. Mares Jr.?

The transaction was a sale by Michael S. Mares Jr., classified as an open-market sale of common stock. The Form 4 lists transaction code “S” and designates the direction as a sell, indicating shares were disposed of rather than acquired in this filing.

Does the CWT Form 4 mention any stock options or derivatives for this insider?

The provided Form 4 data for California Water Service Group shows only a non-derivative common stock sale and no derivative transactions. The derivative summary is empty, indicating no reported option exercises, conversions, or other derivative-related activity for this event.

What does the CWT Form 4 footnote say about the insider sale details?

The footnote explains that 3,892 shares were sold in multiple transactions at a share price of $44.00. It also states the reporting person will provide the SEC staff, issuer, or security holders full information on the number of shares and prices upon request.