Energy Recovery (ERII) Insider Sale Notice — 15,454 Shares Scheduled

Rhea-AI Filing Summary

Form 144 notice for Energy Recovery, Inc. (ERII) shows a proposed sale of 15,454 shares of common stock through Fidelity Brokerage Services (NASDAQ) with an aggregate market value of $233,144.61 and an approximate sale date of 09/18/2025. The filing states the shares were acquired by an option granted on 06/20/2016 and will be paid for in cash on 09/18/2025. The form also discloses a prior sale by William Yeung of 30,877 shares on 09/11/2025 for gross proceeds of $276,349.15. The notice includes the required representation that the seller does not possess undisclosed material adverse information.

Insights

Financial Analyst

TL;DR: Insider option exercise and planned small sale; transaction size is immaterial relative to outstanding shares.

The filing documents a proposed sale of 15,454 common shares (aggregate value $233,144.61) and a recent sale of 30,877 shares for $276,349.15. With 53,198,386 shares outstanding, the disclosed transactions represent a de minimis percentage of the float. The shares originated from an option granted in 2016 and will be paid in cash, indicating an exercise followed by a sale rather than a disposition of newly acquired restricted stock. From a financial viewpoint, these transactions provide liquidity to the holder but are unlikely to meaningfully affect company valuation or market supply.

Corporate Governance Expert

TL;DR: Routine insider reporting under Rule 144; disclosure meets required representations and shows no unusual restrictions.

The Form 144 includes the standard representation that the filer lacks undisclosed material adverse information and notes reliance on an option granted 06/20/2016. The scheduled sale through Fidelity and the disclosed prior sale are consistent with compliance with Rule 144 reporting obligations. There are no indications in the filing of trading-plan dates, restrictive legend issues, or regulatory concerns. Governance implications appear minimal based on the facts presented.

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	15454	233144.61	53198386	09/18/2025	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	09/18/2025	Option Granted 06/20/2016	Issuer			15454	09/18/2025	Cash

* 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	09/11/2025	30877	276349.15

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 Form 144 filed for ERII report?

The form reports a proposed sale of 15,454 common shares through Fidelity on 09/18/2025 with an aggregate market value of $233,144.61.

How were the shares to be sold by ERII's filer acquired?

The filing states the shares were acquired via an option granted on 06/20/2016 and are to be paid for in cash on 09/18/2025.

Did the filer sell any ERII shares recently?

Yes. The filing discloses a sale by William Yeung of 30,877 common shares on 09/11/2025 for gross proceeds of $276,349.15.

Through which broker will the ERII shares be sold?

The planned sale lists Fidelity Brokerage Services LLC (900 Salem Street, Smithfield, RI) and the exchange named is NASDAQ.

Does the filing indicate undisclosed material information?

The seller represents by signature that they do not know any material adverse information about the issuer that has not been publicly disclosed.