Energy Recovery, Inc. (ERII) has 223 open-market insider trades by 33 insiders since 2008. Over the last six months insiders net bought $136K. The most active filer is Arve Hanstveit, Director.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Ole Peter Lorentzen | 10% Owner | — | 10 | $93.8M | 2021-09-15 |
| As Arvarius | 10% Owner | — | 3 | $53.5M | 2021-10-18 |
| Arve Hanstveit | Dir | — | 38 | $22.8M | 2026-06-04 |
| Hans Peter Michelet | Dir | — | 26 | $16.5M | 2019-06-10 |
| Robert Yu Lang Mao | Dir | — | 10 | $11.8M | 2024-05-23 |
| Rodney Clemente | VP | — | 22 | $7.0M | 2026-07-28 |
| Farshad Ghasripoor | CTO | — | 12 | $5.9M | 2025-02-04 |
| Fred Olav Johannessen | Dir | — | 6 | $5.9M | 2014-08-12 |
| Alexander J. Buehler | CEOPres | — | 9 | $3.6M | 2026-06-15 |
| William Yeung | CLO | — | 14 | $2.8M | 2026-07-28 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| William Yeung | CLO | Sell | $18K | 2026-07-28 |
| Rodney Clemente | VP | Sell | $46K | 2026-07-28 |
| Colin R. Sabol | Director | Buy | $99K | 2026-06-15 |
| Alexander J. Buehler | CEO & President | Sell | $130K | 2026-06-15 |
| Pamela L. Tondreau | Director | Buy | $167K | 2026-05-13 |
| Arve Hanstveit | Director | Sell | $25K | 2026-04-06 |
Companies that share insiders with ERII, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Arve Hanstveit | Director | Sell | $1.7M | 2026-04-02 |
| Arve Hanstveit | Director | Sell | $274K | 2026-03-10 |
| Arve Hanstveit | Director | Sell | $534K | 2026-03-05 |
| Natarajan Ramanan | CTO | Sell | $3K | 2026-03-05 |
| Rodney Clemente | SVP & Water | Sell | $218K | 2026-03-04 |
| Rodney Clemente | SVP & Water | Sell | $11K | 2026-02-05 |
| William Yeung | CLO | Sell | $23K | 2026-02-05 |
| William Yeung | CLO | Sell | $116K | 2026-01-28 |
| Arve Hanstveit | Director | Sell | $445K | 2025-12-04 |