Skip to content
sellModerate cluster of 3

Arve Hanstveit sold $534k of ERII

director at Energy Recovery, Inc.. 50,000 shares at an average of $10.69, traded Mar 5, 2026, filed Mar 9, 2026.

Warning score
48
Value
$534k
50,000 shares
Holdings after
575,220
-8% from before
From 52-week low
+5%
low $10.22, close $10.73
From 52-week high
-41%
high $18.11, as of Mar 5, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $534k at market
    +18
  • Share of holdings sold
    Sold 8.0% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -3.6%, 3m -28.3%, 6m -31.4%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

ERIIOct 12, 2026 · close 6.87
Since filing Mar 9, 2026: -38.2%SPY +15.6% · excess -53.8%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001430122-26-000002, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 5, 2026SOpen-market sale
Common Stock
-38,418$10.71$411k586,802Mar 9, 2026
Mar 6, 2026SOpen-market sale
Common Stock
-11,582$10.62$123k575,220Mar 9, 2026

Related signals

Other insiders at Energy Recovery, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
9Weak
ERIIsell 210b5-1
Energy Recovery, Inc.
Rodney Clemente
SVP, Water
$46k
5,387 shares
-5%
3Weak
ERIIsell 210b5-1
Energy Recovery, Inc.
William Yeung
Chief Legal Officer
$18k
2,048 shares
-2%
26Weak
ERIIsell
Energy Recovery, Inc.
Alexander J Buehler
Interim President and CEO
$130k
14,900 shares
-18%
39Weak
ERIIbuy
Energy Recovery, Inc.
Colin R Sabol
director
$99k
11,180 shares
+25%
54Moderate
ERIIbuy
Energy Recovery, Inc.
Pamela L. Tondreau
director
$167k
20,000 shares
+115%
15Weak
ERIIsell
Energy Recovery, Inc.
Arve Hanstveit
director
$25k
2,419 shares
-1%
50Moderate
ERIIsell
Energy Recovery, Inc.
Arve Hanstveit
director
$1.7M
165,292 shares
-30%
43Moderate
ERIIsell 3
Energy Recovery, Inc.
Arve Hanstveit
director
$274k
25,000 shares
-4%
27Weak
ERIIsell 310b5-1
Energy Recovery, Inc.
Rodney Clemente
SVP, Water
$218k
20,568 shares
-15%
30Weak
ERIIsell 3
Energy Recovery, Inc.
Natarajan Ramanan
Chief Technology Officer
$2,875
272 shares
-1%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Arve Hanstveit sold $534k of ERII | InsiderTell