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sellWeak10b5-1 plan

William Yeung sold $233k of ERII

Chief Legal Officer at Energy Recovery, Inc.. 15,454 shares at an average of $15.09, traded Sep 18, 2025, filed Sep 22, 2025.

Warning score
0
Value
$233k
15,454 shares
Holdings after
97,369
-14% from before
From 52-week low
+33%
low $11.37, close $15.14
From 52-week high
-24%
high $19.93, as of Sep 18, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $233k at market
    +13
  • Share of holdings sold
    Sold 14% of holdings
    +5
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

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.

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 9, 2026 · close 6.84
Since filing Sep 22, 2025: -54.2%SPY +18.0% · excess -72.3%

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 0001677876-25-000003, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 18, 2025MOption exercise
Common Stock10b5-1
+15,454$8.95$138k112,823Sep 22, 2025
Sep 18, 2025SOpen-market sale
Common Stock10b5-1
-15,454$15.09$233k97,369Sep 22, 2025
Sep 18, 2025MOption exercise
Employee Stock Option (Right to Buy)derivative10b5-1
-15,454$8.95$138k0Sep 22, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
8Weak
ERIIsell10b5-1
Energy Recovery, Inc.
William Yeung
Chief Legal Officer
$487k
33,554 shares
-26%
3Weak
ERIIsell10b5-1
Energy Recovery, Inc.
Rodney Clemente
SVP, Water
$75k
5,387 shares
-5%
35Weak
ERIIsell
Energy Recovery, Inc.
Arve Hanstveit
director
$635k
50,000 shares
-7%
51Moderate
ERIIbuy 2
Energy Recovery, Inc.
Pamela L. Tondreau
director
$52k
4,200 shares
+11%
61Notable
ERIIbuy 2
Energy Recovery, Inc.
David W Moon
President and CEO
$51k
4,200 shares
+13%
45Moderate
ERIIsell 2
Energy Recovery, Inc.
Arve Hanstveit
director
$817k
50,000 shares
-7%
8Weak
ERIIsell 210b5-1
Energy Recovery, Inc.
Rodney Clemente
SVP, Water
$30k
1,843 shares
-2%
15Weak
ERIIsell10b5-1
Energy Recovery, Inc.
Rodney Clemente
SVP, Water
$331k
21,444 shares
-16%
30Weak
ERIIsell
Energy Recovery, Inc.
Arve Hanstveit
director
$337k
20,000 shares
-3%
34Weak
ERIIsell 310b5-1
Energy Recovery, Inc.
Rodney Clemente
SVP, Water
$550k
27,456 shares
-21%

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.

William Yeung sold $233k of ERII | InsiderTell