ERII insider buying and SEC filings, explained
Energy Recovery, Inc. · CIK 1421517
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$266K
Insiders who bought
2
Sold (not marked 10b5-1)
$3.0M
Planned sales (10b5-1)
$432K
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Jul 28, 2026 | Planned (10b5-1) | Rodney Clemente (SVP, Water) sold 5,387 shares at $8.56 ($46K), marked as a 10b5-1 plan trade. Holdings down 5% to 108,301 shares. | SEC filing Filed Jul 29, 2026 |
| Jul 28, 2026 | Planned (10b5-1) | William Yeung (Chief Legal Officer) sold 2,048 shares at $8.56 ($18K), marked as a 10b5-1 plan trade. Holdings down 2% to 99,291 shares. | SEC filing Filed Jul 29, 2026 |
| Jun 15, 2026 | Purchase (code P) | Colin R Sabol (Director) bought 11,180 shares at about $8.88 ($99K), reported as a purchase (code P). Holdings up 25% to 55,671 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 17, 2026 |
| May 13, 2026 | Purchase (code P) | Pamela L. Tondreau (Director) bought 20,000 shares indirectly (by trust) at about $8.34 ($167K), reported as a purchase (code P). Holdings by trust up 115% to 37,362 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 15, 2026 |
| Apr 6, 2026 | Sale | Arve Hanstveit (Director) sold 2,419 shares at $10.29 ($25K). Holdings down 1% to 382,509 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 8, 2026 |
| Apr 2, 2026 | Sale | Arve Hanstveit (Director) sold 165,292 shares at $10.14 ($1.7M). Holdings down 30% to 384,928 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 6, 2026 |
| Mar 10, 2026 | Sale | Arve Hanstveit (Director) sold 25,000 shares at about $10.96 ($274K). Holdings down 4% to 550,220 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 5–6, 2026 | Sale | Arve Hanstveit (Director) sold 50,000 shares between Mar 5 and Mar 6 at about $10.69 ($534K). Holdings down 8% to 575,220 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Mar 5, 2026 | Sale | Natarajan Ramanan (Chief Technology Officer) sold 272 shares at $10.57 ($3K). Holdings down 1% to 52,565 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 6, 2026 |
| Mar 4, 2026 | Planned (10b5-1) | Rodney Clemente (SVP, Water) sold 20,568 shares at about $10.61 ($218K), marked as a 10b5-1 plan trade. Holdings down 15% to 116,008 shares. | SEC filing Filed Mar 6, 2026 |
| Feb 5–6, 2026 | Planned (10b5-1) | William Yeung (Chief Legal Officer) sold 1,536 shares between Feb 5 and Feb 6 at about $14.82 ($23K), marked as a 10b5-1 plan trade. Holdings down 2% to 78,208 shares. | SEC filing Filed Feb 9, 2026 |
| Feb 5, 2026 | Planned (10b5-1) | Rodney Clemente (SVP, Water) sold 724 shares at $14.59 ($11K), marked as a 10b5-1 plan trade. Holdings down 1% to 90,950 shares. | SEC filing Filed Feb 9, 2026 |
| Jan 28–Feb 2, 2026 | Planned (10b5-1) | William Yeung (Chief Legal Officer) sold 8,000 shares between Jan 28 and Feb 2 at about $14.54 ($116K), marked as a 10b5-1 plan trade. Holdings down 9% to 79,744 shares. | SEC filing Filed Feb 3, 2026 |
| Dec 4–5, 2025 | Sale | Arve Hanstveit (Director) sold 30,000 shares between Dec 4, 2025 and Dec 5, 2025 at about $14.84 ($445K). Holdings down 5% to 625,220 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 8, 2025 |
23 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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