California Water (CWT) director sells 3,700 shares in open-market trade

Rhea-AI Filing Summary

California Water Service Group director Thomas M. Krummel reported a sale of 3,700 shares of common stock on 2026-08-13 in an open market or private transaction at $50.365 per share. After this sale, he directly holds 20,103.922 shares of California Water Service Group common stock.

Insider Trade Summary

Net Seller: 3,700 shares

Net Sell 1 txn

Insider Krummel Thomas M

Role Director

Sold 3,700 shs ($186K)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,700	$50.365	$186K

Holdings After Transaction: Common Stock — 20,103.922 shares (Direct)

Key Figures

Shares sold: 3,700 shares Sale price per share: $50.365 Shares held after transaction: 20,103.922 shares

3 metrics

Shares sold 3,700 shares Non-derivative sale of common stock on 2026-08-13

Sale price per share $50.365 Price per share for the 3,700-share sale

Shares held after transaction 20,103.922 shares Direct holdings of Thomas M. Krummel following the sale

Key Terms

non-derivative, Sale in open market or private transaction

2 terms

non-derivative financial

"The transaction is classified as a non-derivative security transaction."

Sale in open market or private transaction financial

"Transaction code S is described as a Sale in open market or private transaction."

FAQ

What insider transaction did CWT director Thomas M. Krummel report?

Director Thomas M. Krummel reported selling 3,700 shares of California Water Service Group common stock on 2026-08-13 in an open market or private transaction.

At what price were the CWT shares sold by director Thomas M. Krummel?

The reported sale of California Water Service Group (CWT) shares by director Thomas M. Krummel was executed at $50.365 per share, according to the Form 4 insider transaction data.

How many CWT shares does Thomas M. Krummel hold after the reported sale?

Following the sale, Thomas M. Krummel is reported to directly hold 20,103.922 shares of California Water Service Group common stock, as disclosed in the Form 4 filing.

Was the CWT insider sale by Thomas M. Krummel made under a Rule 10b5-1 plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not checked, and there is no referenced footnote indicating a trading plan, so the sale is not identified as made under a Rule 10b5-1 plan.

What type of security did CWT director Thomas M. Krummel sell?

Thomas M. Krummel sold Common Stock of California Water Service Group (CWT) in a non-derivative transaction classified as a sale in an open market or private transaction.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/14/2026 - 05:13 PM Accepted by SEC EDGAR 08/14/2026 - 05:13 PM Learn about SEC filing dates

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^*

Krummel Thomas M

(Last) (First) (Middle)

1720 NORTH 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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/13/2026

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	08/13/2026		S		3,700	D	$50.365	20,103.922	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:

Remarks:

	/s/ Michelle R. Mortensen on behalf of Thomas M. Krummel	08/13/2026
	** 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)