ERII insider notice: 3,567 shares to be sold on 10/03/2025 ($57,072)

Rhea-AI Filing Summary

Energy Recovery, Inc. (ERII) has a Form 144 notice showing a proposed sale of 3,567 common shares valued at $57,072.00 to be executed on 10/03/2025 through Fidelity Brokerage Services LLC on NASDAQ. The filing states these shares were acquired as an option grant originally granted on 02/01/2018 and will be paid for in cash at sale.

The form also discloses that the same account holder, William Yeung, sold 33,554 and 15,454 common shares on 09/11/2025 and 09/18/2025, generating gross proceeds of $487,115.38 and $233,144.64, respectively. The filer certifies no undisclosed material adverse information and includes the statutory attestation language required by Rule 144.

Positive

• Clear disclosure of a proposed insider sale of 3,567 shares valued at $57,072.00
• Acquisition method disclosed: shares were from an option grant dated 02/01/2018
• Recent prior sales disclosed: two sales totaling 49,008 shares with gross proceeds of $720,259.02

Negative

• Insider selling activity: cumulative sales of 49,008 shares in September may be viewed as notable insider liquidity
• No contextual explanation provided for the sales (e.g., plan adoption date or purpose) within the filing

Insights

Insider Transactions Analyst

TL;DR: Insider William Yeung plans to sell 3,567 shares on 10/03/2025, after selling 49,008 shares in September for $720,259.02.

This Form 144 documents a proposed Rule 144 sale of 3,567 shares valued at $57,072, acquired via an option granted on 02/01/2018. The sale is to occur through Fidelity Brokerage Services on NASDAQ, with payment in cash.

The filing also reports two recent transactions by the same seller totaling 49,008 shares with gross proceeds of $720,259.02 on 09/11/2025 and 09/18/2025. This pattern is a factual disclosure of insider liquidity; the filing contains no additional context about motives or company operations.

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	3567	57072.00	53198386	10/03/2025	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	10/03/2025	Option Granted - 02/01/2018	Issuer			3567	10/03/2025	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	33554	487115.38
William Yeung 1717 Doolittle Drive San Leandro CA 94577	Common	09/18/2025	15454	233144.64

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 Energy Recovery (ERII) report on Form 144?

The Form 144 reports a proposed sale of 3,567 common shares valued at $57,072.00 to be sold on 10/03/2025 through Fidelity Brokerage Services on NASDAQ.

Who is the seller named in the Form 144 for ERII?

The filing identifies William Yeung as the person associated with the sales disclosed in the filing.

Were there recent insider sales by the same person for ERII?

Yes. The filing discloses sales of 33,554 shares on 09/11/2025 and 15,454 shares on 09/18/2025, with gross proceeds of $487,115.38 and $233,144.64, respectively.

How were the shares to be sold acquired?

The 3,567 shares were acquired via an option granted on 02/01/2018; the filing lists the issuer as the source of the grant.

What payment method is indicated for the proposed sale?

The filing states the payment method at sale will be cash.