| 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 | 29 Jul 2025 | 0001677876 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ERII | Common Stock | Tax liability | $27,607 | -1,989 | -1.9% | $13.88 | 100,046 | 25 Jul 2025 | Direct | F1 |
| holding | ERII | Common Stock | 5,568 | 25 Jul 2025 | Spouse |
| Id | Content |
|---|---|
| F1 | Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). |