Cal Water CEO uses shares for tax withholding

CALIFORNIA WATER SERVICE GROUP Chairman, President & CEO Martin A. Kropelnicki reported routine share dispositions related to tax withholding, not open-market trades.

Rhea-AI Filing Summary

CALIFORNIA WATER SERVICE GROUP Chairman, President & CEO Martin A. Kropelnicki reported routine share dispositions related to tax withholding, not open-market trades. On June 4 and 5, 2026, a total of 997 common shares were withheld and surrendered to the issuer to cover tax obligations arising from vesting Restricted Stock Awards granted on March 4, 2025 and June 5, 2024. After these transactions, he directly holds about 148,285 common shares, which include shares acquired through the Employee Stock Purchase Program.

Insider Trade Summary

Exercise Price or Tax Liability: 997 shares

Exercise Price or Tax Liability 2 txns

Insider KROPELNICKI MARTIN A

Role Chairman President & CEO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	493	$45.82	$23K
Exercise Price or Tax Liability	Common Stock	504	$45.24	$23K

Holdings After Transaction: Common Stock — 148,284.717 shares (Direct)

Footnotes (3)

1. F1. 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 4,2025
2. F2. Includes shares acquired through the Employee Stock Purchase Program (ESPP).
3. F3. 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.

Key Figures

Tax withholding shares (June 5, 2026): 493 shares at $45.82 Tax withholding shares (June 4, 2026): 504 shares at $45.24 Total shares used for tax withholding: 997 shares +3 more

6 metrics

Tax withholding shares (June 5, 2026) 493 shares at $45.82 Common Stock surrendered to issuer for tax withholding

Tax withholding shares (June 4, 2026) 504 shares at $45.24 Common Stock surrendered to issuer for tax withholding

Total shares used for tax withholding 997 shares Sum of June 4 and June 5, 2026 dispositions

Shares held after June 5, 2026 148,284.717 shares CEO direct ownership of Common Stock following transactions

Transaction price per share (June 5, 2026) $45.82 per share Value used for tax-withholding disposition of 493 shares

Transaction price per share (June 4, 2026) $45.24 per share Value used for tax-withholding disposition of 504 shares

Key Terms

Restricted Stock (RSA) Award, Employee Stock Purchase Program (ESPP), tax withholding obligations, tax-withholding disposition

4 terms

Restricted Stock (RSA) Award financial

"tax withholding obligations that arose in connection with the vesting of Restricted Stock (RSA) Award granted on March 4,2025"

Employee Stock Purchase Program (ESPP) financial

"Includes shares acquired through the Employee Stock Purchase Program (ESPP)."

tax withholding obligations financial

"shares withheld and surrendered to the issuer to satisfy the tax withholding obligations that arose in connection with the vesting of Restricted Stock"

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did CWT CEO Martin Kropelnicki report?

Martin Kropelnicki reported dispositions of shares used to pay taxes, not open-market sales. In total, 997 common shares were withheld and surrendered to the issuer to satisfy tax withholding from vesting Restricted Stock Awards.

Were the recent CWT insider transactions open-market sales?

No, the transactions were tax-withholding dispositions, not open-market sales. Shares were withheld and surrendered to CALIFORNIA WATER SERVICE GROUP to cover tax obligations triggered by vesting Restricted Stock Awards granted in 2024 and 2025.

How many CWT shares were used for tax withholding by the CEO?

A total of 997 CWT common shares were used for tax withholding. This includes 493 shares at $45.82 per share and 504 shares at $45.24 per share, surrendered to cover tax liabilities on vesting equity awards.

How many CWT shares does the CEO hold after these transactions?

After these tax-withholding dispositions, the CEO directly holds 148,284.717 CWT common shares. This figure includes shares acquired through the company’s Employee Stock Purchase Program, as noted in the filing’s footnotes.

What triggered the CWT CEO’s tax-withholding share dispositions?

The dispositions were triggered by vesting of Restricted Stock (RSA) Awards. Footnotes state the withheld shares covered tax obligations from awards granted on March 4, 2025, and June 5, 2024, leading to surrender of 997 shares to the issuer.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 06/08/2026 - 05:29 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^*

KROPELNICKI MARTIN A

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026

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	06/04/2026		F		504(1)	D	$45.24	148,777.717(2)	D
Common Stock	06/05/2026		F		493(3)	D	$45.82	148,284.717	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 March 4,2025

2. Includes shares acquired through the Employee Stock Purchase Program (ESPP).

3. 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.

	By: /s/ Michelle R. Mortensen For: Martin A Kropelnicki	06/08/2026
	** 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)