A. Kristen Johnson - 02 Jan 2026 Form 4 Insider Report for H2O AMERICA (HTO)

Role: Chief Administrative Officer
Signature: /s/ Marisa Joss, Attorney-in-Fact for Kristen A. Johnson
Issuer symbol: HTO
Transactions as of: 02 Jan 2026
Net transactions value: -$33,292
Form type: 4
Filing time: 06 Jan 2026, 20:24:57 UTC
Previous filing: 03 Dec 2025
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Johnson A Kristen	Chief Administrative Officer	110 W. TAYLOR STREET, SAN JOSE	/s/ Marisa Joss, Attorney-in-Fact for Kristen A. Johnson	06 Jan 2026	0001313291

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	HTO	Common Stock	Tax liability	$25,314	-514	-3.9%	$49.25	12,620	02 Jan 2026	Direct	F1
transaction	HTO	Common Stock	Tax liability	$7,978	-160	-1.3%	$49.86	12,460	03 Jan 2026	Direct	F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	HTO	Common Stck						17,876	02 Jan 2026	Common Stock	17,876		Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents 514 shares of the issuer's common stock (Common Stock) withheld in satisfaction of applicable withholding taxes upon the vesting of certain shares of Common Stock that became issuable on January 2, 2026 pursuant to the terms of the Restricted Stock Unit Issuance Agreements between the reporting person and the issuer dated January 2, 2024 and January 2, 2025. The shares underlying such restricted stock units (RSUs) were previously reported as Table I securities at the time the RSUs were granted. Accordingly, the issuance of such shares is not a reportable transaction on this Form 4.
F2	Represents 160 shares of the issuer's Common Stock withheld in satisfaction of applicable withholding taxes upon the vesting of certain shares of Common Stock that became issuable on January 3, 2026 pursuant to the terms of the Restricted Stock Unit Issuance Agreement between the reporting person and the issuer dated January 3, 2023. The shares underlying such RSUs were previously reported as Table I securities at the time the RSUs were granted. Accordingly, the issuance of such shares is not a reportable transaction on this Form 4.
F3	Represents 8,247 shares of the issuer's Common Stock and 4,213 shares of Common Stock underlying restricted stock units which will vest and become issuable in accordance with their terms.
F4	Represents 17,876 shares subject to deferred stock units (DSUs) granted to the reporting person pursuant to dividend equivalent rights (DERs) accrued on outstanding DSUs granted by Connecticut Water Service, Inc., a wholly owned subsidiary of the issuer. DERs accrue when and as dividends are paid on the Common Stock underlying the awards and will vest and be settled in accordance with the same terms as the DSUs to which they relate.