California Water Service Group (CWT) grants 446 restricted shares to VP

Rhea-AI Filing Summary

Shimansky Gregory Dale reported acquisition or exercise transactions in this Form 4 filing.

California Water Service Group officer Gregory Dale Shimansky, VP, Rates & Regulatory Affairs, received a grant of 446 shares of restricted common stock on 8/4/2026 under the company's equity incentive plan, at no cash price. The restricted stock award vests one-third on March 3, 2027, with the remaining two-thirds vesting quarterly over the following 24 months. After this grant, Shimansky directly holds 1,311.037 shares of common stock.

Insider Trade Summary

Net Buyer: 446 shares

Net Buy 1 txn

Insider Shimansky Gregory Dale

Role VP, Rates & Reg Affairs

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	446	$0.00	$0.00

Holdings After Transaction: Common Stock — 1,311.037 shares (Direct)

Footnotes (1)

1. F1. Restricted stock granted on 8/4/2026 pursuant to the California Water Service Group equity incentive plan in a transaction exempt under Rule 16-b-3. RSA vests one-third on March 3, 2027 with the remaining 2/3 vesting quarterly over the succeeding 24 months.

Key Figures

Restricted shares granted: 446 shares Grant price per share: $0.0000 per share Total shares after grant: 1,311.037 shares +2 more

5 metrics

Restricted shares granted 446 shares Restricted common stock granted on 8/4/2026 under equity incentive plan

Grant price per share $0.0000 per share Reported transaction price for the restricted stock award

Total shares after grant 1,311.037 shares Direct holdings of common stock following the reported transaction

Initial vesting date March 3, 2027 One-third of the restricted stock award vests on this date

Remaining vesting period 24 months Remaining two-thirds of award vests quarterly over the succeeding 24 months

Key Terms

restricted stock, equity incentive plan, Rule 16-b-3, RSA, +1 more

5 terms

restricted stock financial

"Restricted stock granted on 8/4/2026 pursuant to the California Water Service..."

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

equity incentive plan financial

"pursuant to the California Water Service Group equity incentive plan in a transaction..."

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

Rule 16-b-3 regulatory

"equity incentive plan in a transaction exempt under Rule 16-b-3."

RSA financial

"RSA vests one-third on March 3, 2027 with the remaining 2/3 vesting..."

vesting financial

"RSA vests one-third on March 3, 2027 with the remaining 2/3 vesting quarterly..."

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/05/2026 - 03:18 PM Accepted by SEC EDGAR 08/05/2026 - 03:17 PM Learn about SEC filing dates

FAQ

What did insider Gregory Dale Shimansky report in CWT's latest Form 4?

Shimansky reported receiving a grant of 446 shares of restricted common stock in California Water Service Group on 8/4/2026 under the company's equity incentive plan, increasing his direct holdings to 1,311.037 shares.

How many California Water Service Group (CWT) shares does Shimansky now hold?

Following the reported transaction, Gregory Dale Shimansky directly holds 1,311.037 shares of California Water Service Group common stock. This total includes the newly granted 446 restricted shares reported in the Form 4 filing.

What is the vesting schedule for Shimansky's 446 restricted CWT shares?

The 446 restricted shares vest one-third on March 3, 2027, with the remaining two-thirds vesting quarterly over the succeeding 24 months, according to the equity incentive plan terms described in the filing footnote.

Was Shimansky's CWT stock grant part of an equity incentive plan?

Yes. The Form 4 states the restricted stock was granted on 8/4/2026 pursuant to the California Water Service Group equity incentive plan, in a transaction exempt under Rule 16-b-3.

Did the reported CWT transaction involve a market purchase or sale of shares?

No. The Form 4 describes the transaction as a grant or award acquisition of 446 restricted shares at a per-share price of $0.0000, rather than an open-market purchase or sale.

Was Shimansky's CWT Form 4 transaction under a Rule 10b5-1 trading plan?

No. The filing's Rule 10b5-1 checkbox is not marked as affirmative, and the footnote describes the event as a restricted stock grant under the equity incentive plan, not as a trade pursuant to a 10b5-1 plan.

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^*

Shimansky Gregory Dale

(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)
	VP, Rates & Reg Affairs

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/04/2026

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	08/04/2026		A		446(1)	A	$0.00	1,311.037	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 8/4/2026 pursuant to the California Water Service Group equity incentive plan in a transaction exempt under Rule 16-b-3. RSA vests one-third on March 3, 2027 with the remaining 2/3 vesting quarterly over the succeeding 24 months.

Remarks:

	/s/ Michelle Mortensen on behalf of Gregory Dale Shimansky	08/05/2026
	** 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.
* Form 4: SEC 1474 (03-26)