Energy Recovery (NASDAQ: ERII) insider William Yeung files to sell 646 shares

Rhea-AI Filing Summary

Energy Recovery, Inc. (ERII) insider William Yeung has filed a Form 144 to sell 646 shares of common stock. The planned sale, routed through Fidelity Brokerage Services, has an aggregate market value of $9,780.44 and is targeted for execution on 02/06/2026 on the NASDAQ market.

These 646 shares were acquired on 01/30/2026 through restricted stock vesting as compensation from the issuer. As context, the filing notes 52,972,096 common shares outstanding. In the prior three months, Yeung sold 7,271 and 729 common shares on 01/28/2026 and 02/02/2026, generating gross proceeds of $105,793.05 and $10,541.34, respectively.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	646	9780.44	52972096	02/06/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	01/30/2026	Restricted Stock Vesting	Issuer			646	01/30/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
William Yeung 1717 Doolittle Drive San Leandro CA 94577	Common	01/28/2026	7271	105793.05
William Yeung 1717 Doolittle Drive San Leandro CA 94577	Common	02/02/2026	729	10541.34

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the ERII Form 144 filing by William Yeung disclose?

The filing discloses that insider William Yeung plans to sell 646 ERII common shares through Fidelity Brokerage Services. The planned NASDAQ sale on 02/06/2026 has an aggregate market value of $9,780.44, based on the figures in the notice.

How many ERII shares is William Yeung currently planning to sell under this Form 144?

William Yeung plans to sell 646 shares of ERII common stock under this Form 144. The notice lists these shares with an aggregate market value of $9,780.44, to be sold on or about 02/06/2026 on the NASDAQ exchange.

How and when did William Yeung acquire the ERII shares being sold?

The 646 ERII common shares were acquired on 01/30/2026 through restricted stock vesting from the issuer as compensation. The filing shows the amount acquired, the same acquisition date, and identifies the nature of payment as compensation rather than a cash purchase.

What prior ERII share sales by William Yeung are reported in the last three months?

The filing lists two prior ERII sales by William Yeung: 7,271 shares of common stock sold on 01/28/2026 for $105,793.05 in gross proceeds, and 729 shares sold on 02/02/2026 for $10,541.34 in gross proceeds.

What is the reported number of ERII shares outstanding in this Form 144?

The notice reports 52,972,096 ERII common shares outstanding. This figure provides context for the relative size of the planned 646-share sale but does not change the terms or mechanics of the individual transaction described in the filing.

Which broker and exchange are involved in the planned ERII share sale?

The Form 144 identifies Fidelity Brokerage Services LLC, located at 900 Salem Street, Smithfield, RI 02917, as the broker. The planned sale of 646 ERII common shares is indicated to occur on the NASDAQ securities exchange.