Was the 283-share CWT disposition by Kenneth G. Jenkins an open market sale?

No. The 283-share disposition represents shares withheld and surrendered to California Water Service Group to satisfy tax withholding obligations from a restricted stock award vesting, rather than an open market sale of common stock.

How does dividend reinvestment affect Kenneth G. Jenkins’ CWT share holdings?

The Form 4 notes that his reported holdings include shares acquired through dividend reinvestment . This means some portion of Kenneth G. Jenkins’ 5,137 directly owned shares comes from dividends automatically reinvested into California Water Service Group stock.

California Water Service (NYSE: CWT) VP reports 1,650-share grant and tax withholding

Q: What insider transactions did CWT executive Kenneth G. Jenkins report on this Form 4?

Kenneth G. Jenkins reported a restricted stock grant of 1,650 shares of California Water Service Group common stock and a 283-share tax withholding disposition tied to a prior restricted stock vesting, both involving directly owned shares.

Q: What are the vesting terms of the 1,650 restricted CWT shares granted to Kenneth G. Jenkins?

The 1,650 restricted shares granted on March 3, 2026 vest with one-third on March 3, 2027 , and the remaining two-thirds vest quarterly over the succeeding 24 months , according to the company’s equity incentive plan.

Q: Under what plan was the 1,650-share CWT restricted stock grant to Kenneth G. Jenkins made?

The 1,650-share restricted stock grant to Kenneth G. Jenkins was made under the California Water Service Group equity incentive plan in a transaction described as exempt under Rule 16b-3 in the Form 4 footnotes.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

California Water Service Group vice president Kenneth G. Jenkins reported equity award and related tax withholding transactions in company stock. On March 3, 2026, he acquired 1,650 shares of common stock as a restricted stock grant under the equity incentive plan. This restricted stock vests with one-third on March 3, 2027, and the remaining two-thirds vesting quarterly over the following 24 months. On March 4, 2026, 283 shares were withheld and surrendered to the issuer at $46.99 per share to satisfy tax withholding obligations from a prior restricted stock vesting. After these transactions, he directly owned 5,137 shares of common stock, including shares acquired through dividend reinvestment.

Insider Trade Summary

Net Buyer: 1,367 shares

Net Buy 2 txns

Insider Jenkins Kenneth G

Role VP Water Res Plan & Sustain

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	283	$46.99	$13K
Grant/Award	Common Stock	1,650	$0.00	$0.00

Holdings After Transaction: Common Stock — 5,137 shares (Direct)

Footnotes (3)

F1. 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 one-third on March 3, 2027, and with the remaining 2/3 vesting quarterly over the succeeding 24 months.
F2. Includes shares acquired through Dividend Reinvestment.
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 March 4,2025

FAQ

What insider transactions did CWT executive Kenneth G. Jenkins report on this Form 4?

Kenneth G. Jenkins reported a restricted stock grant of 1,650 shares of California Water Service Group common stock and a 283-share tax withholding disposition tied to a prior restricted stock vesting, both involving directly owned shares.

How many CWT shares did Kenneth G. Jenkins own after the reported transactions?

After the reported transactions, Kenneth G. Jenkins directly owned 5,137 shares of California Water Service Group common stock. This total includes shares acquired through dividend reinvestment, as disclosed in the footnotes to the Form 4 filing.

What are the vesting terms of the 1,650 restricted CWT shares granted to Kenneth G. Jenkins?

The 1,650 restricted shares granted on March 3, 2026 vest with one-third on March 3, 2027, and the remaining two-thirds vest quarterly over the succeeding 24 months, according to the company’s equity incentive plan.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/05/2026 - 08:08 PM

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^*

Jenkins Kenneth G

(Last)

(First)

(Middle)

1720 NORTH FIRST STREET

(Street)

SAN JOSE

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)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	VP Water Res Plan & Sustain

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	03/03/2026		A		1,650⁽¹⁾	A	$0.0	5,420⁽²⁾	D
Common Stock	03/04/2026		F		283⁽³⁾	D	$46.99	5,137	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 one-third on March 3, 2027, and with the remaining 2/3 vesting quarterly over the succeeding 24 months.

2. Includes shares acquired through Dividend Reinvestment.

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 March 4,2025

	By: /s/ Michelle R. Mortensen For: Kenneth G Jenkins	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.

Source: View Original Filing on SEC EDGAR