Arve Hanstveit, a director at Energy Recovery, Inc. ($ERII), made seven open market sales of company shares over the past year, totaling about $1.89 million. His most recent sale occurred on March 10, 2026. These sales rank 3,614th among 11,678 individual insiders in our database, where the average is $8.59 million across roughly 6.4 transactions per insider. Hanstveit Arve recorded no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 10, 2026 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 25000 | $10.96 | 670,220.0000 | 66,709,664 | 3.60% | 0.04% |
| March 6, 2026 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 11582 | $10.62 | 575,220.0000 | 66,709,664 | 1.97% | 0.02% |
| March 5, 2026 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 38418 | $10.71 | 586,802.0000 | 66,709,664 | 6.14% | 0.06% |
| Dec. 5, 2025 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 15000 | $14.71 | 745,220.0000 | 66,709,664 | 1.97% | 0.02% |
| Dec. 4, 2025 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 15000 | $14.97 | 760,220.0000 | 66,709,664 | 1.93% | 0.02% |
| June 11, 2025 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 20000 | $12.75 | 805,220.0000 | 66,182,906 | 2.42% | 0.03% |
| June 12, 2025 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 30000 | $12.68 | 775,220.0000 | 66,182,906 | 3.73% | 0.05% |
| June 5, 2025 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | A | Common Stock | 12038 | $0.00 | 825,220.0000 | 66,182,906 | 1.48% | 0.02% |
| March 11, 2025 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 50000 | $16.34 | 693,182.0000 | 66,182,906 | 6.73% | 0.08% |
| Dec. 11, 2024 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 20000 | $16.87 | 863,182.0000 | 66,030,587 | 2.26% | 0.03% |
| June 6, 2024 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | A | Common Stock | 11127 | $0.00 | 903,182.0000 | 65,029,459 | 1.25% | 0.02% |
| June 7, 2024 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 20000 | $13.20 | 883,182.0000 | 65,029,459 | 2.21% | 0.03% |
| May 8, 2024 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 35000 | $13.53 | 892,055.0000 | 65,029,459 | 3.78% | 0.05% |
| Feb. 28, 2024 | Energy Recovery, Inc. | $ERII | Hanstveit Arve | Director | S | Common Stock | 50000 | $15.49 | 927,055.0000 | 65,029,459 | 5.12% | 0.08% |