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sellModerate cluster of 410b5-1 plan

Richard E Williams sold $1.6M of POWL

director at POWELL INDUSTRIES INC. 5,250 shares at an average of $299.19, traded May 14, 2026, filed May 15, 2026.

Warning score
40
Value
$1.6M
5,250 shares
Holdings after
39,630
-12% from before
From 52-week low
+427%
low $56.35, close $296.75
From 52-week high
-8%
high $321.80, as of May 14, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $1.6M at market
    +25
  • Share of holdings sold
    Sold 12% of holdings
    +5
  • Cluster
    4 insiders selling within 14 days
    +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.

POWLOct 9, 2026 · close 191.93
Since filing May 15, 2026: -34.4%SPY +5.8% · excess -40.2%

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 0000080420-26-000074, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 14, 2026SOpen-market sale
Common Stock10b5-1
-4,370$298.88$1.3M40,510May 15, 2026
May 14, 2026SOpen-market sale
Common Stock10b5-1
-740$300.66$222k39,770May 15, 2026
May 14, 2026SOpen-market sale
Common Stock10b5-1
-140$301.05$42k39,630May 15, 2026

Related signals

Other insiders at POWELL INDUSTRIES INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
57Moderate
POWLsell 2
POWELL INDUSTRIES INC
Brett Alan Cope
President & CEO
$901k
4,799 shares
-1%
30Weak
POWLsell 2
POWELL INDUSTRIES INC
William Marshall Mauney Jr
Vice President, R&D
$56k
301 shares
-3%
20Weak
POWLsell 210b5-1
POWELL INDUSTRIES INC
Richard E Williams
director
$457k
2,250 shares
-6%
37Weak
POWLsell 210b5-1
POWELL INDUSTRIES INC
Brett Alan Cope
President & CEO
$932k
4,500 shares
-1%
45Moderate
POWLsell 310b5-1
POWELL INDUSTRIES INC
Brett Alan Cope
President & CEO
$1.1M
4,440 shares
-1%
50Moderate
POWLsell 3
POWELL INDUSTRIES INC
Brett Alan Cope
President & CEO
$360
36,000 shares
-6%
35Weak
POWLsell 310b5-1
POWELL INDUSTRIES INC
Michael William Metcalf
Exec Vice President
$1.3M
4,500 shares
-5%
52Moderate
POWLsell 3
POWELL INDUSTRIES INC
Thomas W Powell
owner
$10M
33,958 shares
-6%
45Moderate
POWLsell 310b5-1
POWELL INDUSTRIES INC
Brett Alan Cope
President & CEO
$1.2M
4,440 shares
-1%
36Weak
POWLsell 310b5-1
POWELL INDUSTRIES INC
Mohit Singh
director
$396k
1,350 shares
-33%

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.

Richard E Williams sold $1.6M of POWL | InsiderTell