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sellNotable cluster of 3

M Anne Szostak sold $1.2M of IDXX

director at IDEXX LABORATORIES INC /DE. 2,306 shares at an average of $512.97, traded May 21, 2025, filed May 23, 2025.

Warning score
60
Value
$1.2M
2,306 shares
Holdings after
1,801
-176% from before
From 52-week low
+39%
low $361.04, close $500.87
From 52-week high
-4%
high $521.68, as of May 21, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $1.2M at market
    +25
  • Share of holdings sold
    Sold 100% of holdings
    +20
  • Cluster
    3 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -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.

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.

IDXXOct 9, 2026 · close 518.00
Since filing May 23, 2025: +3.3%SPY +36.7% · excess -33.4%

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 0000874716-25-000094, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 21, 2025MOption exercise
Common Stock
+1,046$160.28$168k1,308May 23, 2025
May 21, 2025SOpen-market sale
Common Stock
-1,046$513.74$537k262May 23, 2025
May 21, 2025SOpen-market sale
Common Stockindirect: Trust of M. Anne Szostak
-1,260$512.34$646k1,801May 23, 2025
May 21, 2025MOption exercise
Non-Qualified Stock Option (right-to-buy)derivative
-1,046--0May 23, 2025

Related signals

Other insiders at IDEXX LABORATORIES INC /DE and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
30Weak
IDXXsell
IDEXX LABORATORIES INC /DE
Lawrence D Kingsley
director
$1.2M
2,203 shares
-19%
60Notable
IDXXsell 4
IDEXX LABORATORIES INC /DE
M Anne Szostak
director
$1.4M
2,187 shares
-89%
43Moderate
IDXXsell 6
IDEXX LABORATORIES INC /DE
Michael G Erickson
Executive Vice President
$264k
406 shares
-3%
37Weak
IDXXsell 6
IDEXX LABORATORIES INC /DE
Nimrata Hunt
Executive Vice President
$788k
1,200 shares
-7%
50Moderate
IDXXsell 6
IDEXX LABORATORIES INC /DE
Sharon E. Underberg
EVP, GC & Corporate Secretary
$3.6M
5,450 shares
-47%
50Moderate
IDXXsell 5
IDEXX LABORATORIES INC /DE
Nimrata Hunt
Executive Vice President
$4.5M
7,143 shares
-28%
60Notable
IDXXsell 5
IDEXX LABORATORIES INC /DE
Michael Lane
Executive Vice President
$5.3M
8,411 shares
-54%
60Notable
IDXXsell 5
IDEXX LABORATORIES INC /DE
Jonathan Jay Mazelsky
President and CEO
$18M
29,260 shares
-26%
50Moderate
IDXXsell 3
IDEXX LABORATORIES INC /DE
Daniel M Junius
director
$1.4M
2,683 shares
-45%
55Moderate
IDXXsell 3
IDEXX LABORATORIES INC /DE
Sophie V. Vandebroek
director
$628k
1,279 shares
-52%

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.

M Anne Szostak sold $1.2M of IDXX | InsiderTell