California Water CFO has 98 shares withheld for tax

CWT’s CFO had 98 shares withheld and surrendered to the company to satisfy tax liabilities from vesting restricted stock awards, not as an open-market sale.

Rhea-AI Filing Summary

CALIFORNIA WATER SERVICE GROUP (CWT) reported that James Patrick Lynch, its SVP, CFO and Treasurer, had shares of common stock withheld on September 4 and September 5, 2026 to cover tax obligations from prior equity awards. A total of 98 shares were withheld and surrendered to the issuer at about $50.03 per share in connection with the vesting of Restricted Stock (RSA) Awards granted on June 5, 2024 and March 4, 2025. These are reported as payments of tax liability by delivering or withholding securities, and no Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Tax Withholding: 98 shares

Tax Withholding 2 txns

Insider Lynch James Patrick

Role SVP CFO and Treasurer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F2	48	$50.03	$2K
Tax Withholding	Common Stock F1	50	$50.03	$3K

Holdings After Transaction: Common Stock — 6,485.53 shares (Direct)

Footnotes (2)

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. 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

Shares withheld September 4, 2026: 50 shares Shares withheld September 5, 2026: 48 shares Total shares withheld for taxes: 98 shares +2 more

5 metrics

Shares withheld September 4, 2026 50 shares Common stock withheld and surrendered to issuer for tax withholding on RSA granted March 4, 2025

Shares withheld September 5, 2026 48 shares Common stock withheld and surrendered to issuer for tax withholding on RSA granted June 5, 2024

Total shares withheld for taxes 98 shares Aggregate of Form 4 code F transactions reported by CWT’s CFO

Reference value per share $50.03 per share Per-share value used for both tax-withholding dispositions of common stock

Transactions coded F 2 transactions Both reported as payment of tax liability by delivering or withholding securities

Key Terms

Restricted Stock (RSA) Award, tax withholding obligations, withheld and surrendered, Rule 10b5-1

4 terms

Restricted Stock (RSA) Award financial

"in connection with the vesting of Restricted Stock (RSA) Award granted"

tax withholding obligations financial

"to satisfy the tax withholding obligations that arose in connection"

withheld and surrendered financial

"Represents the number of shares withheld and surrendered to the issuer"

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is reported for these transactions"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

What did CWT’s CFO report in this Form 4 filing?

The filing reports that CWT SVP, CFO and Treasurer James Patrick Lynch had 98 shares of common stock withheld and surrendered to the company on September 4–5, 2026 to satisfy tax withholding obligations from vesting Restricted Stock Awards.

Were the CWT (CWT) transactions open-market sales?

No. Both transactions are coded as F, described as payment of tax liability by delivering or withholding securities. Footnotes state the shares were withheld and surrendered to the issuer to cover tax withholding from Restricted Stock Award vesting, not sold in the open market.

How many CWT shares were withheld on each date?

On September 4, 2026, 50 shares of CWT common stock were withheld at $50.03 per share. On September 5, 2026, an additional 48 shares were withheld at the same per-share value, for a total of 98 shares surrendered to satisfy tax obligations.

What awards triggered the CWT share withholding for the CFO?

The share withholding relates to vesting of Restricted Stock (RSA) Awards. Footnotes state that 50 shares were withheld for an RSA granted on March 4, 2025 and 48 shares for an RSA granted on June 5, 2024, to satisfy related tax withholding obligations.

Was a Rule 10b5-1 plan involved in the CWT Form 4 transactions?

No. The filing’s Rule 10b5-1 checkbox is not marked, and the footnotes do not reference any trading plan. The transactions are reported solely as share withholding to pay tax liabilities arising from Restricted Stock Award vesting.

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Available on EDGAR 09/08/2026 - 04:28 PM Accepted by SEC EDGAR 09/08/2026 - 04:28 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^*

Lynch James Patrick

(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)
	SVP CFO and Treasurer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/04/2026

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	09/04/2026		F		50(1)	D	$50.03	6,533.53	D
Common Stock	09/05/2026		F		48(2)	D	$50.03	6,485.53	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. 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: James Patrick Lynch	09/08/2026
	** 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)