William Yeung - 28 Jan 2026 Form 4 Insider Report for Energy Recovery, Inc. (ERII)

Signature
/s/ William Yeung
Issuer symbol
ERII
Transactions as of
28 Jan 2026
Net transactions value
-$254,323
Form type
4
Filing time
03 Feb 2026, 17:21:51 UTC
Previous filing
27 Oct 2025
Next filing
09 Feb 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Yeung William Chief Legal Officer C/O ENERGY RECOVERY, INC., 1717 DOOLITTLE DRIVE, SAN LEANDRO /s/ William Yeung 03 Feb 2026 0001677876

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ERII Common Stock Sale $105,793 -7,271 -7.5% $14.55 90,098 28 Jan 2026 Direct F1
transaction ERII Common Stock Tax liability $14,694 -1,003 -1.1% $14.65 89,095 30 Jan 2026 Direct F2
transaction ERII Common Stock Tax liability $123,295 -8,622 -9.7% $14.30 80,473 30 Jan 2026 Direct F2
transaction ERII Common Stock Sale $10,541 -729 -0.91% $14.46 79,744 02 Feb 2026 Direct F1
holding ERII Common Stock 5,568 28 Jan 2026 Spouse
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
F2 Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).