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sellModerate cluster of 4

Brian P Weber sold $1.4M of CLH

EVP (CHESI) at CLEAN HARBORS INC. 4,683 shares at an average of $293.39, traded Mar 17, 2026, filed Mar 17, 2026.

Warning score
55
Value
$1.4M
4,683 shares
Holdings after
48,728
-9% from before
From 52-week low
+60%
low $182.10, close $290.55
From 52-week high
-2%
high $297.15, as of Mar 17, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $1.4M at market
    +25
  • Share of holdings sold
    Sold 8.8% of holdings
    0
  • Cluster
    4 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 +2.1%, 3m +0.0%, 6m +9.5%.

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.

CLHOct 9, 2026 · close 316.93
Since filing Mar 17, 2026: +9.1%SPY +16.9% · excess -7.8%

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 0001322710-26-000004, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 13, 2026FTax withholding
Common Stock
-960$288.93$277k55,280Mar 17, 2026
Mar 13, 2026DDisposition to issuer
Common Stock
-1,869$0.00$053,411Mar 17, 2026
Mar 17, 2026SOpen-market sale
Common Stock
-4,683$293.39$1.4M48,728Mar 17, 2026

Related signals

Other insiders at CLEAN HARBORS INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
55Moderate
CLHsell 2
CLEAN HARBORS INC
Eric W Gerstenberg
CO-CEO
$803k
2,500 shares
-4%
61Notable
CLHsell 5
CLEAN HARBORS INC
Eric W Gerstenberg
CO-CEO
$700k
2,500 shares
-4%
54Moderate
CLHsell 4
CLEAN HARBORS INC
Eric W Gerstenberg
CO-CEO
$293k
1,000 shares
-2%
64Notable
CLHsell 5
CLEAN HARBORS INC
Eric J. Dugas
EVP CHIEF FINANCIAL OFFICER
$784k
2,788 shares
-12%
36Weak
CLHsell 2
CLEAN HARBORS INC
Andrea Robertson
director
$248k
789 shares
-8%
28Weak
CLHsell
CLEAN HARBORS INC
Lauren States
director
$226k
789 shares
-6%
29Weak
CLHbuy
CLEAN HARBORS INC
Karyn Polito
director
$136k
460 shares
+15%
54Moderate
CLHsell 4
CLEAN HARBORS INC
Eric W Gerstenberg
CO-CEO
$293k
1,000 shares
-3%
48Moderate
CLHsell 4
CLEAN HARBORS INC
Marcy L. Reed
director
$241k
836 shares
-14%
60Notable
CLHsell 7
CLEAN HARBORS INC
Alan S McKim
EXEC CHAIR, CTO.
$29M
100,000 shares
-5%

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.

Brian P Weber sold $1.4M of CLH | InsiderTell