🕵️ Energy Recovery, Inc. ($ERII)
SEC insider & ownership activity, last 12 months · CIK 1421517 · every row links its SEC filing
Over the last 12 months insiders sold $4.2M against $266K of open-market buying. Hanstveit Arve sold $3.0M (Dec–Apr). One red-flag 8-K in the window: Impairment (2.06), Feb 25, 2026.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $266K (2 lots) · 5 sellers, $4.2M (25 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Hanstveit Arve | 0 | – | 7 | $3.0M | Apr 6, 2026 |
| Yeung William | 0 | – | 13 | $792K | Jul 28, 2026 |
| Clemente Rodney | 0 | – | 3 | $275K | Jul 28, 2026 |
| Pamela L. Tondreau | 1 | $167K | 0 | – | May 13, 2026 |
| Alexander J. Buehler | 0 | – | 1 | $130K | Jun 15, 2026 |
| Colin R. Sabol | 1 | $99K | 0 | – | Jun 15, 2026 |
| Ramanan Natarajan | 0 | – | 1 | $3K | Mar 5, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Amundi | 7.8% | 13G | Jul 22, 2026 | filing ↗ | |
| Amundi Asset Management | 7.8% | 13G | Jul 22, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Yeung William | $18K | Jul 28, 2026 | filing ↗ |
| Clemente Rodney | $46K | Jul 28, 2026 | filing ↗ |
| Alexander J. Buehler | $132K | Jun 15, 2026 | filing ↗ |
| Hanstveit Arve | $274K | Mar 10, 2026 | filing ↗ |
| Hanstveit Arve | $123K | Mar 6, 2026 | filing ↗ |
| Ramanan Natarajan | $3K | Mar 5, 2026 | filing ↗ |
| Clemente Rodney | $214K | Mar 4, 2026 | filing ↗ |
| Yeung William | $10K | Feb 6, 2026 | filing ↗ |
| Yeung William | $11K | Feb 2, 2026 | filing ↗ |
| Yeung William | $106K | Jan 28, 2026 | filing ↗ |
| David W. Moon | $155K | Jan 27, 2026 | filing ↗ |
| Clemente Rodney | $120K | Jan 27, 2026 | filing ↗ |
| Michael S. Mancini | $50K | Jan 27, 2026 | filing ↗ |
| Hostetler Matthew | $35K | Jan 27, 2026 | filing ↗ |
| Yeung William | $89K | Jan 27, 2026 | filing ↗ |
| Hanstveit Arve | $220K | Dec 5, 2025 | filing ↗ |
| Hanstveit Arve | $224K | Dec 4, 2025 | filing ↗ |
| Yeung William | $165K | Oct 24, 2025 | filing ↗ |
| Yeung William | $62K | Oct 23, 2025 | filing ↗ |
| Yeung William | $60K | Oct 20, 2025 | filing ↗ |
| Yeung William | $58K | Oct 16, 2025 | filing ↗ |
| Yeung William | $57K | Oct 3, 2025 | filing ↗ |
| Yeung William | $233K | Sep 18, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 13, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 5, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 4, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 28, 2026 | filing ↗ |
| Earnings (2.02) | May 6, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 6, 2026 | filing ↗ |
| Other events (8.01) | May 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 6, 2026 | filing ↗ |
| Earnings (2.02) | Feb 25, 2026 | filing ↗ |
| Exit or disposal costs (2.05) | Feb 25, 2026 | filing ↗ |
| Impairment (2.06) | Feb 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 25, 2026 | filing ↗ |
| Earnings (2.02) | Nov 5, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 5, 2025 | filing ↗ |