| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BUEHLER ALEXANDER J | Director | C/O ENERGY RECOVERY, INC., 1717 DOOLITTLE DRIVE, SAN LEANDRO | /s/ William Yeung Attorney-in-fact for Alexander J. Buehler | 06 Jun 2025 | 0001397838 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ERII | Common Stock | Award | $0 | +12,038 | +22% | $0.000000 | 66,328 | 05 Jun 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | The restricted stock unit will fully vest on 2026 Annual Meeting date, anticipated to be on or about June 4, 2026. |
Exhibit 24