ERII · Insider trading · 13F holders · Congress trades
Energy Recovery, Inc. (ERII)
Who is buying and selling ERII: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 3
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 7
ERII at a glance
- No open-market insider purchases or sales of ERII were filed in the last 90 days.
- 3 13F filers hold ERII among their 50 largest positions, worth $13.6M combined. The biggest bets by portfolio weight are Kopion Asset Management, LLC (4.3%), Avenir Corp (0.8%) and Milfam LLC (0.3%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- Members of Congress have disclosed 7 ERII trades since 2014, 3 purchases and 4 sales in the past year; the latest was Suzan K. DelBene (D-WA), selling $1K–15K on Mar 9, 2015.
- ERII last closed at $6.93 on Oct 30, 2026.
ERII insider trading
No open-market insider purchases or sales of ERII were filed in the last 90 days.
Who owns ERII? Hedge funds and superinvestors
3 13F filers hold ERII among their 50 largest positions, worth $13.6M combined. The biggest bets by portfolio weight are Kopion Asset Management, LLC (4.3%), Avenir Corp (0.8%) and Milfam LLC (0.3%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Kopion Asset Management, LLCWealth manager | 4.3% | $6.8M | 1,018,133 | +59.2% shares | Q3 2026 |
| Avenir CorpWealth manager | 0.8% | $6.3M | 693,886 | -15.1% shares | Q2 2026 |
| Milfam LLCInvestment manager | 0.3% | $500K | 75,000 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 2, Q2 2026: 1). Screen ERII in the grand portfolio →
ERII stock trades by members of Congress
Members of Congress have disclosed 7 ERII trades since 2014, 3 purchases and 4 sales in the past year; the latest was Suzan K. DelBene (D-WA), selling $1K–15K on Mar 9, 2015.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Apr 16, 2015 | Suzan K. DelBeneD-WA · House | Sale | $1K–15K | Mar 9, 2015 | +143.0% |
| Apr 16, 2015 | Suzan K. DelBeneD-WA · House | Sale | $1K–15K | Mar 6, 2015 | +148.2% |
| Jan 19, 2015 | Suzan K. DelBeneD-WA · House | Buy | $1K–15K | Dec 5, 2014 | +40.8% |
| Jan 19, 2015 | Suzan K. DelBeneD-WA · House | Buy | $1K–15K | Dec 4, 2014 | +48.0% |
| Jul 9, 2014 | Suzan K. DelBeneD-WA · House | Sale | $1K–15K | Jun 30, 2014 | +40.8% |
| Jul 9, 2014 | Suzan K. DelBeneD-WA · House | Sale | $1K–15K | Jun 24, 2014 | +35.8% |
| Jun 12, 2014 | Suzan K. DelBeneD-WA · House | Buy | $15K–50K | May 12, 2014 | +46.7% |
ERII questions and answers
Are insiders buying ERII stock?
No open-market insider purchases or sales of ERII were filed in the last 90 days.
Which hedge funds own ERII?
3 13F filers hold ERII among their 50 largest positions, worth $13.6M combined. The biggest bets by portfolio weight are Kopion Asset Management, LLC (4.3%), Avenir Corp (0.8%) and Milfam LLC (0.3%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded ERII?
Members of Congress have disclosed 7 ERII trades since 2014, 3 purchases and 4 sales in the past year; the latest was Suzan K. DelBene (D-WA), selling $1K–15K on Mar 9, 2015.
Who is the largest holder of ERII?
Among 13F filers, Kopion Asset Management, LLC reports the largest ERII position, $6.8M (1,018,133 shares) in its Q3 2026 13F. The biggest bet by portfolio weight is Kopion Asset Management, LLC's: 4.3% of its portfolio.
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