Energy Recovery, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Hanstveit Arve | — | Sale | 15,000 | $14.97 | $224,550 | 640,220 | Dec 5, 2025 |
| Yeung William | Chief Legal Officer | Option Exercise | 3,530 | $7.50 | $26,475 | 100,899 | Oct 24, 2025 |
| Yeung William | Chief Legal Officer | Sale | 3,530 | $17.00 | $60,010 | 97,369 | Oct 20, 2025 |
| Yeung William | Chief Legal Officer | Option Exercise | 3,530 | $7.50 | $26,475 | 100,899 | Oct 16, 2025 |
| Yeung William | Chief Legal Officer | Sale | 2,529 | $16.00 | $40,464 | 97,369 | Oct 3, 2025 |
| Yeung William | Chief Legal Officer | Option Exercise | 15,454 | $8.95 | $138,313 | 112,823 | Sep 18, 2025 |
| Yeung William | Chief Legal Officer | Option Exercise | 30,877 | $8.95 | $276,349 | 130,923 | Sep 11, 2025 |
| Yeung William | Chief Legal Officer | Tax Withholding | 1,989 | $13.88 | $27,607 | 100,046 | Jul 25, 2025 |
| Clemente Rodney | SVP, Water | Sale | 5,387 | $13.97 | $75,256 | 100,765 | Jul 25, 2025 |
| Hanstveit Arve | — | Sale | 30,000 | $12.68 | $380,400 | 655,220 | Jun 11, 2025 |
| TONDREAU PAMELA L. | — | Award / Grant | 14,847 | — | — | 55,890 | Jun 5, 2025 |
| BUEHLER ALEXANDER J | — | Award / Grant | 12,038 | — | — | 66,328 | Jun 5, 2025 |
| Chow Joan Kai | — | Award / Grant | 12,038 | — | — | 34,022 | Jun 5, 2025 |
| Hanstveit Arve | — | Award / Grant | 12,038 | — | — | 705,220 | Jun 5, 2025 |
| Sabol Colin R | — | Award / Grant | 12,038 | — | — | 26,397 | Jun 5, 2025 |
| TONDREAU PAMELA L. | — | Purchase | 4,200 | $12.28 | $51,576 | 41,043 | May 14, 2025 |
| Moon David W | President and CEO | Purchase | 4,200 | $12.20 | $51,240 | 36,950 | May 13, 2025 |
| Hanstveit Arve | — | Sale | 50,000 | $16.34 | $817,000 | 693,182 | Mar 11, 2025 |
| Clemente Rodney | SVP, Water | Tax Withholding | 794 | $16.37 | $12,998 | 110,315 | Mar 11, 2025 |
| Yeung William | Chief Legal Officer | Tax Withholding | 944 | $16.37 | $15,453 | 102,035 | Mar 10, 2025 |
| Ramanan Natarajan | Chief Technology Officer | Award / Grant | 26,455 | — | — | 26,455 | Mar 3, 2025 |
| Clemente Rodney | SVP, Water | Sale | 21,444 | $15.42 | $330,666 | 111,109 | Feb 20, 2025 |
| Clemente Rodney | SVP, Water | Tax Withholding | 944 | $14.34 | $13,537 | 132,553 | Feb 3, 2025 |
| Yeung William | Chief Legal Officer | Tax Withholding | 882 | $14.34 | $12,648 | 102,979 | Feb 3, 2025 |
| Ghasripoor Farshad | Chief Technology Officer | Other | 65,000 | — | — | 52,860 | Feb 3, 2025 |
| Yeung William | Chief Legal Officer | Tax Withholding | 698 | $14.33 | $10,002 | 104,488 | Jan 31, 2025 |
| Clemente Rodney | SVP, Water | Tax Withholding | 694 | $14.33 | $9,945 | 134,112 | Jan 31, 2025 |
| Ghasripoor Farshad | Chief Technology Officer | Tax Withholding | 926 | $14.56 | $13,483 | 119,280 | Jan 30, 2025 |
| Moon David W | President and CEO | Tax Withholding | 7,664 | $14.40 | $110,362 | 168,417 | Jan 27, 2025 |
| Yeung William | Chief Legal Officer | Tax Withholding | 4,061 | $14.40 | $58,478 | 105,186 | Jan 27, 2025 |
| Ghasripoor Farshad | Chief Technology Officer | Tax Withholding | 5,721 | $14.40 | $82,382 | 121,240 | Jan 27, 2025 |
| Clemente Rodney | SVP, Water | Tax Withholding | 5,784 | $14.40 | $83,290 | 134,806 | Jan 27, 2025 |
| Yeung William | Chief Legal Officer | Award / Grant | 23,956 | — | — | 109,247 | Jan 23, 2025 |
| Moon David W | President and CEO | Award / Grant | 88,980 | — | — | 176,081 | Jan 23, 2025 |
| Clemente Rodney | SVP, Water | Award / Grant | 34,223 | — | — | 140,590 | Jan 23, 2025 |
| Mancini Michael S. | Chief Financial Officer | Award / Grant | 34,223 | — | — | 34,223 | Jan 23, 2025 |
| Hanstveit Arve | — | Sale | 20,000 | $16.87 | $337,400 | 743,182 | Dec 11, 2024 |
| Clemente Rodney | SVP, Water | Sale | 3,631 | $20.15 | $73,165 | 110,574 | Nov 7, 2024 |
| Ghasripoor Farshad | Chief Technology Officer | Sale | 10,526 | $17.97 | $189,152 | 126,961 | Oct 28, 2024 |
| Clemente Rodney | SVP, Water | Sale | 6,505 | $17.98 | $116,960 | 133,823 | Oct 28, 2024 |
| Moon David W | President and CEO | Sale | 2,550 | $17.97 | $45,824 | 87,101 | Oct 28, 2024 |
| BUEHLER ALEXANDER J | — | Option Exercise | 19,841 | $2.92 | $57,936 | 54,290 | Aug 19, 2024 |
| Moon David W | President and CEO | Purchase | 3,000 | $16.00 | $48,000 | 32,750 | Aug 5, 2024 |
| Ghasripoor Farshad | Chief Technology Officer | Sale | 4,079 | $14.63 | $59,676 | 137,487 | Jul 29, 2024 |
| Clemente Rodney | SVP, Water | Sale | 2,353 | $14.63 | $34,424 | 140,328 | Jul 29, 2024 |
| Yeung William | Chief Legal Officer | Sale | 2,012 | $14.63 | $29,436 | 85,291 | Jul 29, 2024 |
| Moon David W | President and CEO | Sale | 1,219 | $12.77 | $15,567 | 89,651 | Jun 18, 2024 |
| Hanstveit Arve | — | Award / Grant | 11,127 | — | — | 783,182 | Jun 7, 2024 |
| Chow Joan Kai | — | Award / Grant | 11,127 | — | — | 21,984 | Jun 6, 2024 |
| BUEHLER ALEXANDER J | — | Award / Grant | 11,127 | — | — | 34,449 | Jun 6, 2024 |