Energy Recovery (ERII) CEO receives 81,812-share restricted stock grant

Rhea-AI Filing Summary

Energy Recovery, Inc. President and CEO David W. Moon reported an equity award in the form of common stock on a Form 4. He acquired 81,812 shares on February 17, 2026 as a grant at no cash cost to him.

The footnotes state these are employee restricted stock units, each representing one share of common stock. The units vest in four equal 25% installments on the first four anniversaries of the grant date. After this grant, his directly held common stock totals 233,069 shares, with an additional 36,950 shares held indirectly through the David and Rhonda Moon JCP.

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

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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^*

Moon David W

(Last) (First) (Middle)

1717 DOOLITTLE DR.

(Street)

SAN LEANDRO CA 94577

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Energy Recovery, Inc. [ ERII ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/17/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/17/2026		A		81,812(1)(2)	A	$0	233,069	D
Common Stock								36,950	I	David and Rhonda Moon JCP

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. These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vest on the first four anniversaries of the grant date.

2. Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

Remarks:

Exhibit 24

	/s/ William Yeung, Attorney-in-Fact for David W. Moon	02/19/2026
	** 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.

FAQ

What did Energy Recovery (ERII) CEO David Moon report on this Form 4?

Energy Recovery CEO David W. Moon reported receiving an equity grant of 81,812 shares of common stock on February 17, 2026. The filing describes this as an employee restricted stock unit award that vests over time rather than an open-market stock purchase or sale.

How many shares did Energy Recovery CEO David Moon acquire in this grant?

David W. Moon acquired 81,812 shares of common stock as a grant on February 17, 2026. These are structured as restricted stock units, meaning they convert into shares as they vest over four annual installments, rather than being immediately unrestricted, freely tradable shares.

What is the vesting schedule for David Moon’s 81,812 restricted stock units at ERII?

The 81,812 employee restricted stock units vest in four equal 25% installments. According to the filing, 25% will vest on each of the first four anniversaries of the February 17, 2026 grant date, assuming the standard vesting conditions continue to be satisfied.

What does each restricted stock unit granted to Energy Recovery’s CEO represent?

Each restricted stock unit granted to David W. Moon represents the right to receive one share of Energy Recovery’s common stock. The filing notes that, upon settlement after vesting, each unit converts one-for-one into a share, aligning the award directly with the company’s equity.

How many Energy Recovery shares does David Moon own after this transaction?

Following the grant, David W. Moon directly owns 233,069 shares of Energy Recovery common stock. The filing also reports an additional 36,950 shares held indirectly through the David and Rhonda Moon JCP, reflecting both direct and indirect beneficial ownership positions.

How are David Moon’s indirect Energy Recovery (ERII) holdings reported?

The Form 4 shows an indirect holding of 36,950 shares of common stock under the name “David and Rhonda Moon JCP.” This line is characterized as indirect ownership, separate from his directly held shares, and helps clarify different forms of beneficial ownership reported.