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sellWeak10b5-1 plan

Leif E Pedersen sold $559k of CERT

PRESIDENT, CHIEF COMMERCAL OFF at Certara, Inc.. 51,224 shares at an average of $10.92, traded Sep 9, 2025, filed Sep 11, 2025.

Warning score
29
Value
$559k
51,224 shares
Holdings after
73,979
-41% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    President
    +20
  • Trade size
    $559k at market
    +19
  • Share of holdings sold
    Sold 41% of holdings
    +10
  • Cluster
    No other insider selling within 14 days
    0
  • 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.

This signal so far: 1m +8.6%, 3m -19.3%, 6m -39.9%.

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.

CERTOct 9, 2026 · close 9.13
Since filing Sep 11, 2025: -16.4%SPY +19.9% · excess -36.3%

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 0001415889-25-024287, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 9, 2025SOpen-market sale
Common Stock10b5-1
-51,224$10.92$559k73,979Sep 11, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
37Weak
CERTbuy
Certara, Inc.
William F Feehery
CHIEF EXECUTIVE OFFICER
$200k
24,096 shares
+1%
10Weak
CERTsell 210b5-1
Certara, Inc.
Richard M. Traynor
SVP AND GENERAL COUNSEL
$55k
3,000 shares
-2%
17Weak
CERTsell 210b5-1
Certara, Inc.
Patrick F Smith
PRESIDENT, DRUG DEV SOLUTIONS
$90k
5,000 shares
-8%
13Weak
CERTsell 210b5-1
Certara, Inc.
Richard M. Traynor
SVP AND GENERAL COUNSEL
$108k
6,000 shares
-4%
5Weak
CERTsell10b5-1
Certara, Inc.
Richard M. Traynor
SVP AND GENERAL COUNSEL
$108k
6,000 shares
-3%

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.

Leif E Pedersen sold $559k of CERT | InsiderTell