ERII
Energy Recovery, Inc.$11.10+0.05 (+0.45%)Prev Close$11.05·MCap$595.9M·P/E25.81·Vol399.1K·Yield—
▲
Buys (12M)
2
$102.8K
▼
Sells (12M)
23
$5.85M
◆
Net Activity
Net Seller
$5.75M
●
Active Insiders
9
last 12 mo
Over the past 12 months, insider activity at Energy Recovery, Inc. (ERII) has been dominated by selling, with 2 insider purchases totaling $102.8K and 23 insider sales totaling $5.85M. The most recent insider transaction was by Hanstveit Arve (director), who sold $24.9K worth of shares on Apr 8, 2026. Energy Recovery, Inc. operates in the Industrials sector, within the Industrial - Pollution & Treatment Controls industry, with a market cap of $595.9M.
ERII Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 8, 2026 | Hanstveit Arve | director | Sell | 2,419 | $10.29 | $24.9K | 382,509 |
| Apr 6, 2026 | Hanstveit Arve | director | Sell | 165,292 | $10.14 | $1.68M | 384,928-30% |
| Mar 11, 2026 | Hanstveit Arve | director | Sell | 25,000 | $10.96 | $274.0K | 550,220 |
| Mar 9, 2026 | Hanstveit Arve | director | Sell | 50,000 | $10.69 | $534.4K | 586,802 |
| Mar 6, 2026 | Clemente Rodney | officer: SVP, Water | Sell | 20,568 | $10.61 | $218.3K | 116,008 |
| Mar 6, 2026 | Ramanan Natarajan | officer: Chief Technology Officer | Sell | 272 | $10.57 | $2.9K | 52,565 |
| Feb 5, 2026 | Clemente Rodney | SVP, Water | Sell | 724 | $14.59 | $10.6K | 90,950 |
| Feb 5, 2026 | Yeung William | Chief Legal Officer | Sell | 1,536 | $14.82 | $22.8K | 78,854 |
| Jan 30, 2026 | Clemente Rodney | SVP, Water | Sell | 9,091 | $14.33 | $130.2K | 100,071 |
| Jan 30, 2026 | Hostetler Matthew | Chief Human Resources Officer | Sell | 3,359 | $14.30 | $48.0K | 20,597 |
| Jan 30, 2026 | Mancini Michael S. | Chief Financial Officer | Sell | 4,798 | $14.30 | $68.6K | 29,425 |
| Jan 30, 2026 | Moon David W | President and CEO | Sell | 17,160 | $14.30 | $245.4K | 151,257 |
| Jan 28, 2026 | Yeung William | Chief Legal Officer | Sell | 17,625 | $14.43 | $254.3K | 90,098 |
| Dec 4, 2025 | Hanstveit Arve | Director | Sell | 30,000 | $14.84 | $445.1K | 640,220 |
| Oct 23, 2025 | Yeung William | Chief Legal Officer | Sell | 12,698 | $17.86 | $226.8K | 97,369 |
| Oct 20, 2025 | Yeung William | Chief Legal Officer | Sell | 3,530 | $17.00 | $60.0K | 97,369 |
| Oct 16, 2025 | Yeung William | Chief Legal Officer | Sell | 3,530 | $16.50 | $58.2K | 97,369 |
| Oct 3, 2025 | Yeung William | Chief Legal Officer | Sell | 3,567 | $16.00 | $57.1K | 97,369 |
| Sep 18, 2025 | Yeung William | Chief Legal Officer | Sell | 15,454 | $15.09 | $233.1K | 97,369 |
| Sep 11, 2025 | Yeung William | Chief Legal Officer | Sell | 33,554 | $14.51 | $486.9K | 97,369-26% |
| Jul 25, 2025 | Clemente Rodney | SVP, Water | Sell | 7,707 | $13.94 | $107.5K | 106,152 |
| Jul 25, 2025 | Yeung William | Chief Legal Officer | Sell | 1,989 | $13.88 | $27.6K | 100,046 |
| Jun 11, 2025 | Hanstveit Arve | Director | Sell | 50,000 | $12.71 | $635.4K | 685,220 |
| May 14, 2025 | TONDREAU PAMELA L. | Director | Buy | 4,200 | $12.28 | $51.6K | 41,043 |
| May 13, 2025 | Moon David W | President and CEO | Buy | 4,200 | $12.20 | $51.2K | 36,950 |
| Mar 11, 2025 | Hanstveit Arve | Director | Sell | 50,000 | $16.34 | $817.0K | 693,182 |
| Mar 10, 2025 | Clemente Rodney | SVP, Water | Sell | 2,637 | $16.27 | $42.9K | 110,315 |
| Mar 10, 2025 | Yeung William | Chief Legal Officer | Sell | 944 | $16.37 | $15.5K | 102,035 |
| Feb 20, 2025 | Clemente Rodney | SVP, Water | Sell | 21,444 | $15.42 | $330.7K | 111,109 |
| Feb 3, 2025 | Clemente Rodney | SVP, Water | Sell | 944 | $14.34 | $13.5K | 132,553 |
| Feb 3, 2025 | Ghasripoor Farshad | Chief Technology Officer | Sell | 1,420 | $14.34 | $20.4K | 117,860 |
| Feb 3, 2025 | Yeung William | Chief Legal Officer | Sell | 882 | $14.34 | $12.6K | 102,979 |
| Jan 30, 2025 | Clemente Rodney | SVP, Water | Sell | 1,309 | $14.44 | $18.9K | 134,112 |
| Jan 30, 2025 | Ghasripoor Farshad | Chief Technology Officer | Sell | 1,960 | $14.44 | $28.3K | 120,206 |
| Jan 30, 2025 | Yeung William | Chief Legal Officer | Sell | 1,325 | $14.44 | $19.1K | 104,488 |
| Jan 27, 2025 | Clemente Rodney | SVP, Water | Sell | 5,784 | $14.40 | $83.3K | 134,806 |
| Jan 27, 2025 | Ghasripoor Farshad | Chief Technology Officer | Sell | 5,721 | $14.40 | $82.4K | 121,240 |
| Jan 27, 2025 | Moon David W | President and CEO | Sell | 7,664 | $14.40 | $110.4K | 168,417 |
| Jan 27, 2025 | Yeung William | Chief Legal Officer | Sell | 4,061 | $14.40 | $58.5K | 105,186 |
| Dec 11, 2024 | Hanstveit Arve | Director | Sell | 20,000 | $16.87 | $337.4K | 743,182 |
| Nov 7, 2024 | Clemente Rodney | SVP, Water | Sell | 27,456 | $20.03 | $549.9K | 114,205 |
| Oct 28, 2024 | Clemente Rodney | SVP, Water | Sell | 6,505 | $17.98 | $116.9K | 133,823 |
| Oct 28, 2024 | Ghasripoor Farshad | Chief Technology Officer | Sell | 10,526 | $17.97 | $189.1K | 126,961 |
| Oct 28, 2024 | Moon David W | President and CEO | Sell | 2,550 | $17.97 | $45.8K | 87,101 |
| Aug 5, 2024 | Moon David W | President and CEO | Buy | 3,000 | $16.00 | $48.0K | 32,750 |
| Jul 29, 2024 | Clemente Rodney | SVP, Water | Sell | 2,353 | $14.63 | $34.4K | 140,328 |
| Jul 29, 2024 | Ghasripoor Farshad | Chief Technology Officer | Sell | 4,079 | $14.63 | $59.7K | 137,487 |
| Jul 29, 2024 | Yeung William | Chief Legal Officer | Sell | 2,012 | $14.63 | $29.4K | 85,291 |
| Jun 18, 2024 | Moon David W | President and CEO | Sell | 1,219 | $12.77 | $15.6K | 89,651 |
| Jun 6, 2024 | Hanstveit Arve | Director | Sell | 20,000 | $13.20 | $263.9K | 763,182 |
Showing 1–50 of 123
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ERII Insider Buying Activity
The following table shows recent insider purchases of Energy Recovery, Inc. (ERII) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| May 14, 2025 | TONDREAU PAMELA L. | Director | Buy | 4,200 | $12.28 | $51.6K | 41,043 |
| May 13, 2025 | Moon David W | President and CEO | Buy | 4,200 | $12.20 | $51.2K | 36,950 |
| Aug 5, 2024 | Moon David W | President and CEO | Buy | 3,000 | $16.00 | $48.0K | 32,750 |
ERII Insider Selling Activity
The following table shows recent insider sales of Energy Recovery, Inc. (ERII) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 8, 2026 | Hanstveit Arve | director | Sell | 2,419 | $10.29 | $24.9K | 382,509 |
| Apr 6, 2026 | Hanstveit Arve | director | Sell | 165,292 | $10.14 | $1.68M | 384,928-30% |
| Mar 11, 2026 | Hanstveit Arve | director | Sell | 25,000 | $10.96 | $274.0K | 550,220 |
| Mar 9, 2026 | Hanstveit Arve | director | Sell | 50,000 | $10.69 | $534.4K | 586,802 |
| Mar 6, 2026 | Clemente Rodney | officer: SVP, Water | Sell | 20,568 | $10.61 | $218.3K | 116,008 |
| Mar 6, 2026 | Ramanan Natarajan | officer: Chief Technology Officer | Sell | 272 | $10.57 | $2.9K | 52,565 |
| Feb 5, 2026 | Clemente Rodney | SVP, Water | Sell | 724 | $14.59 | $10.6K | 90,950 |
| Feb 5, 2026 | Yeung William | Chief Legal Officer | Sell | 1,536 | $14.82 | $22.8K | 78,854 |
| Jan 30, 2026 | Clemente Rodney | SVP, Water | Sell | 9,091 | $14.33 | $130.2K | 100,071 |
| Jan 30, 2026 | Hostetler Matthew | Chief Human Resources Officer | Sell | 3,359 | $14.30 | $48.0K | 20,597 |
| Jan 30, 2026 | Mancini Michael S. | Chief Financial Officer | Sell | 4,798 | $14.30 | $68.6K | 29,425 |
| Jan 30, 2026 | Moon David W | President and CEO | Sell | 17,160 | $14.30 | $245.4K | 151,257 |
| Jan 28, 2026 | Yeung William | Chief Legal Officer | Sell | 17,625 | $14.43 | $254.3K | 90,098 |
| Dec 4, 2025 | Hanstveit Arve | Director | Sell | 30,000 | $14.84 | $445.1K | 640,220 |
| Oct 23, 2025 | Yeung William | Chief Legal Officer | Sell | 12,698 | $17.86 | $226.8K | 97,369 |
| Oct 20, 2025 | Yeung William | Chief Legal Officer | Sell | 3,530 | $17.00 | $60.0K | 97,369 |
| Oct 16, 2025 | Yeung William | Chief Legal Officer | Sell | 3,530 | $16.50 | $58.2K | 97,369 |
| Oct 3, 2025 | Yeung William | Chief Legal Officer | Sell | 3,567 | $16.00 | $57.1K | 97,369 |
| Sep 18, 2025 | Yeung William | Chief Legal Officer | Sell | 15,454 | $15.09 | $233.1K | 97,369 |
| Sep 11, 2025 | Yeung William | Chief Legal Officer | Sell | 33,554 | $14.51 | $486.9K | 97,369-26% |
| Jul 25, 2025 | Clemente Rodney | SVP, Water | Sell | 7,707 | $13.94 | $107.5K | 106,152 |
| Jul 25, 2025 | Yeung William | Chief Legal Officer | Sell | 1,989 | $13.88 | $27.6K | 100,046 |
| Jun 11, 2025 | Hanstveit Arve | Director | Sell | 50,000 | $12.71 | $635.4K | 685,220 |
| Mar 11, 2025 | Hanstveit Arve | Director | Sell | 50,000 | $16.34 | $817.0K | 693,182 |
| Mar 10, 2025 | Clemente Rodney | SVP, Water | Sell | 2,637 | $16.27 | $42.9K | 110,315 |
| Mar 10, 2025 | Yeung William | Chief Legal Officer | Sell | 944 | $16.37 | $15.5K | 102,035 |
| Feb 20, 2025 | Clemente Rodney | SVP, Water | Sell | 21,444 | $15.42 | $330.7K | 111,109 |
| Feb 3, 2025 | Clemente Rodney | SVP, Water | Sell | 944 | $14.34 | $13.5K | 132,553 |
| Feb 3, 2025 | Ghasripoor Farshad | Chief Technology Officer | Sell | 1,420 | $14.34 | $20.4K | 117,860 |
| Feb 3, 2025 | Yeung William | Chief Legal Officer | Sell | 882 | $14.34 | $12.6K | 102,979 |
| Jan 30, 2025 | Clemente Rodney | SVP, Water | Sell | 1,309 | $14.44 | $18.9K | 134,112 |
| Jan 30, 2025 | Ghasripoor Farshad | Chief Technology Officer | Sell | 1,960 | $14.44 | $28.3K | 120,206 |
| Jan 30, 2025 | Yeung William | Chief Legal Officer | Sell | 1,325 | $14.44 | $19.1K | 104,488 |
| Jan 27, 2025 | Clemente Rodney | SVP, Water | Sell | 5,784 | $14.40 | $83.3K | 134,806 |
| Jan 27, 2025 | Ghasripoor Farshad | Chief Technology Officer | Sell | 5,721 | $14.40 | $82.4K | 121,240 |
| Jan 27, 2025 | Moon David W | President and CEO | Sell | 7,664 | $14.40 | $110.4K | 168,417 |
| Jan 27, 2025 | Yeung William | Chief Legal Officer | Sell | 4,061 | $14.40 | $58.5K | 105,186 |
| Dec 11, 2024 | Hanstveit Arve | Director | Sell | 20,000 | $16.87 | $337.4K | 743,182 |
| Nov 7, 2024 | Clemente Rodney | SVP, Water | Sell | 27,456 | $20.03 | $549.9K | 114,205 |
| Oct 28, 2024 | Clemente Rodney | SVP, Water | Sell | 6,505 | $17.98 | $116.9K | 133,823 |
| Oct 28, 2024 | Ghasripoor Farshad | Chief Technology Officer | Sell | 10,526 | $17.97 | $189.1K | 126,961 |
| Oct 28, 2024 | Moon David W | President and CEO | Sell | 2,550 | $17.97 | $45.8K | 87,101 |
| Jul 29, 2024 | Clemente Rodney | SVP, Water | Sell | 2,353 | $14.63 | $34.4K | 140,328 |
| Jul 29, 2024 | Ghasripoor Farshad | Chief Technology Officer | Sell | 4,079 | $14.63 | $59.7K | 137,487 |
| Jul 29, 2024 | Yeung William | Chief Legal Officer | Sell | 2,012 | $14.63 | $29.4K | 85,291 |
| Jun 18, 2024 | Moon David W | President and CEO | Sell | 1,219 | $12.77 | $15.6K | 89,651 |
| Jun 6, 2024 | Hanstveit Arve | Director | Sell | 20,000 | $13.20 | $263.9K | 763,182 |
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