Arve Hanstveit is Director at Energy Recovery, Inc. (ERII). They have made 38 open-market trades across 1 company since 2008, most recently 2026-06-04.
CIK 0001430122
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $415K since 2013, against 37 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ERII | 400,603 | $2.7M |
Shares reported on the most recent Form 4, priced at the 2026-06-05 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ERII | SELL | 2026-04-06 | 2026-04-08 | $10.29 | $25K | -2.4% | -14.9% | -17.9% |
| ERII | SELL | 2026-04-02 | 2026-04-06 | $10.14 | $1.7M | +1.7% | +13.0% | -12.5% |
| ERII | SELL | 2026-03-10 | 2026-03-11 | $10.96 | $274K | -3.9% | +5.5% | -22.8% |
| ERII | SELL | 2026-03-05 | 2026-03-09 | $10.69 | $534K | -12.5% | -3.6% | -28.4% |
| ERII | SELL | 2025-12-04 | 2025-12-08 | $14.84 | $445K | -0.4% | -3.0% | -23.3% |
| ERII | SELL | 2025-06-11 | 2025-06-13 | $12.71 | $635K | +0.3% | +6.1% | +17.5% |
| ERII | SELL | 2025-03-11 | 2025-03-13 | $16.34 | $817K | +3.0% | -7.7% | -21.3% |
| ERII | SELL | 2024-12-11 | 2024-12-17 | $16.87 | $337K | -9.2% | -11.5% | -2.5% |
| ERII | SELL | 2024-06-07 | 2024-06-10 | $13.20 | $264K | -7.9% | +1.6% | +10.6% |
| ERII | SELL | 2024-05-08 | 2024-05-10 | $13.53 | $474K | -0.3% | -2.3% | +19.0% |
| ERII | SELL | 2024-02-28 | 2024-03-01 | $15.49 | $775K | -7.8% | -1.3% | -16.5% |
| ERII | SELL | 2023-06-20 | 2023-06-23 | $27.50 | $413K | +3.9% | +12.8% | -18.9% |
| ERII | SELL | 2023-06-01 | 2023-06-05 | $23.73 | $727K | +6.0% | +11.8% | -0.7% |
| ERII | SELL · 10b5-1 | 2023-04-03 | 2023-04-05 | $23.50 | $376K | +1.6% | +3.3% | +20.8% |
| ERII | SELL | 2022-11-16 | 2022-11-18 | $20.93 | $721K | +7.8% | -0.9% | +3.3% |
| ERII | SELL | 2021-11-22 | 2021-11-24 | $24.61 | $615K | -1.3% | -1.9% | -14.6% |
| ERII | SELL | 2021-04-29 | 2021-05-11 | $22.16 | $637K | +5.3% | +20.5% | +10.8% |
| ERII | SELL | 2021-04-26 | 2021-05-11 | $22.00 | $234K | +5.3% | +20.5% | +10.8% |
| ERII | SELL | 2021-03-12 | 2021-03-16 | $17.00 | $425K | +4.6% | +1.7% | +15.6% |
| ERII | SELL | 2021-02-24 | 2021-02-26 | $17.00 | $425K | +0.4% | -0.9% | +4.2% |
| ERII | SELL | 2021-01-04 | 2021-01-06 | $14.29 | $357K | +1.4% | -1.0% | +30.1% |
| ERII | SELL | 2020-05-28 | 2020-06-01 | $8.03 | $803K | +4.0% | -9.1% | +10.4% |
| ERII | SELL | 2020-03-20 | 2020-04-08 | $7.10 | $491K | -6.9% | +4.1% | -9.5% |
| ERII | SELL | 2020-03-10 | 2020-03-12 | $8.17 | $727K | -5.5% | -5.1% | +13.6% |
| ERII | SELL | 2019-12-03 | 2019-12-05 | $8.61 | $685K | +6.4% | +11.1% | +13.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.