H2O America (HTO) grants 1,947 RSUs to director Carl Guardino

Rhea-AI Filing Summary

Guardino Carl reported acquisition or exercise transactions in this Form 4 filing.

H2O America director Carl Guardino received a grant of 1,947 restricted stock units (RSUs). The award was made at no cash cost to him under the company’s Long-Term Incentive Plan.

The RSUs vest in full if he continues Board service through the day immediately before the 2027 annual stockholders meeting. After this grant, he holds 9,139 shares tied to H2O America, including 7,192 shares of common stock and 1,947 shares underlying RSUs.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Guardino Carl

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,947	$0.00	--

Holdings After Transaction: Common Stock — 9,139 shares (Direct, null)

Footnotes (1)

1. Represents 1,947 restricted stock units ("RSUs") granted to the reporting person under the Issuer's Long-Term Incentive Plan ("LTIP"). Each RSU will entitle the reporting person to receive one share of the Issuer's common stock ("Common Stock") when that unit vests. The RSUs will vest in full upon the reporting person's continuation in Board service through the day immediately preceding the date of the Issuer's 2027 annual stockholders meeting, subject to accelerated vesting under certain prescribed circumstances. The reporting person has elected to defer receipt of the RSUs pursuant to the terms of the Formulaic Equity Award Program for Non-Employee Board Members implemented under the LTIP. Represents 7,192 shares of Common Stock and 1,947 shares of Common Stock underlying RSUs which will vest and become issuable in accordance with their terms.

Key Figures

RSU grant size: 1,947 RSUs Grant price per RSU: $0.00 per unit Total holdings after grant: 9,139 shares +2 more

5 metrics

RSU grant size 1,947 RSUs Award to director Carl Guardino on May 13, 2026

Grant price per RSU $0.00 per unit Equity compensation, no cash paid by director

Total holdings after grant 9,139 shares Common and RSU-linked exposure following the transaction

Common stock held 7,192 shares Shares of H2O America common stock held after grant

Shares underlying RSUs 1,947 shares Common shares underlying newly granted RSUs

Key Terms

restricted stock units ("RSUs"), Long-Term Incentive Plan ("LTIP"), Formulaic Equity Award Program for Non-Employee Board Members

3 terms

restricted stock units ("RSUs") financial

"Represents 1,947 restricted stock units ("RSUs") granted to the reporting person"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

Long-Term Incentive Plan ("LTIP") financial

"granted to the reporting person under the Issuer's Long-Term Incentive Plan ("LTIP")"

Formulaic Equity Award Program for Non-Employee Board Members financial

"pursuant to the terms of the Formulaic Equity Award Program for Non-Employee Board Members"

Form 4 Insider Transactions: What Each Field Means →

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^*

Guardino Carl

(Last) (First) (Middle)

110 W. TAYLOR STREET

(Street)

SAN JOSE CALIFORNIA 95110

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
H2O AMERICA [ HTO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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	05/13/2026		A		1,947(1)	A	$0	9,139(2)	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 1,947 restricted stock units ("RSUs") granted to the reporting person under the Issuer's Long-Term Incentive Plan ("LTIP"). Each RSU will entitle the reporting person to receive one share of the Issuer's common stock ("Common Stock") when that unit vests. The RSUs will vest in full upon the reporting person's continuation in Board service through the day immediately preceding the date of the Issuer's 2027 annual stockholders meeting, subject to accelerated vesting under certain prescribed circumstances. The reporting person has elected to defer receipt of the RSUs pursuant to the terms of the Formulaic Equity Award Program for Non-Employee Board Members implemented under the LTIP.

2. Represents 7,192 shares of Common Stock and 1,947 shares of Common Stock underlying RSUs which will vest and become issuable in accordance with their terms.

Remarks:

	/s/ Marisa Joss Attorney-in-Fact for Carl Guardino	05/15/2026
	** 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)

FAQ

What insider transaction did H2O America (HTO) report for Carl Guardino?

H2O America reported a stock-based compensation grant to director Carl Guardino. He received 1,947 restricted stock units under the company’s Long-Term Incentive Plan, with no cash paid, increasing his combined common and RSU-linked position to 9,139 shares tied to H2O America stock.

How many RSUs did Carl Guardino receive from H2O America (HTO)?

Carl Guardino received 1,947 restricted stock units (RSUs). Each RSU represents the right to receive one share of H2O America common stock upon vesting, making the grant economically equivalent to 1,947 future shares if the vesting conditions tied to Board service are satisfied.

When do Carl Guardino’s RSUs from H2O America (HTO) vest?

The 1,947 RSUs will vest in full before the 2027 stockholders meeting. Vesting requires Guardino’s continued service on the Board through the day immediately preceding H2O America’s 2027 annual stockholders meeting, with potential accelerated vesting in certain prescribed circumstances under the plan’s terms.

What is Carl Guardino’s total reported H2O America (HTO) share exposure after this Form 4?

After the grant, Guardino is reported with 9,139 shares tied to H2O America. This consists of 7,192 shares of common stock already held and 1,947 shares of common stock underlying the newly granted RSUs, which will become issuable if the RSUs vest as scheduled.

What plan governs Carl Guardino’s RSU grant from H2O America (HTO)?

The RSU grant was made under H2O America’s Long-Term Incentive Plan (LTIP). It also references the Formulaic Equity Award Program for Non-Employee Board Members, under which Guardino elected to defer receipt of the RSUs, aligning director compensation with the company’s equity over time.

Did Carl Guardino pay anything for his H2O America (HTO) RSUs?

No, the RSUs were granted at a stated price of $0.00 per unit. This reflects standard equity-based compensation for non-employee directors, where value is delivered in stock units that may convert into common shares upon vesting, rather than requiring an out-of-pocket purchase.