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buyNotable

Gregory L Summe bought $375k of AVTR

director at Avantor, Inc.. 30,000 shares at an average of $12.50, traded May 23, 2025, filed May 27, 2025.

Conviction score
60
Value
$375k
30,000 shares
Holdings after
100,000
+43% from before
From 52-week low
+6%
low $11.94, close $12.69
From 52-week high
-54%
high $27.70, as of May 23, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $375k at market
    +16
  • Relative to holdings
    Holdings up 43%
    +6
  • Price context
    6% above the 52-week low; 54% below the 52-week high
    +18
  • Cluster
    No other insider buying within 14 days
    0
  • Repeat buying
    4 buys in 90 days
    +5
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

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 +4.5%, 3m +1.1%, 6m -9.9%.

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.

AVTROct 12, 2026 · close 15.49
Since filing May 27, 2025: +17.8%SPY +33.8% · excess -16.0%

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 0001722482-25-000165, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 23, 2025POpen-market purchase
Common Stockindirect: By a Trust
+30,000$12.50$375k100,000May 27, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
51Moderate
AVTRbuy 2
Avantor, Inc.
Gregory T Lucier
director
$83k
10,000 shares
+20%
61Notable
AVTRbuy 2
Avantor, Inc.
Simon Dingemans
director
$204k
25,000 shares
-
64Notable
AVTRbuy
Avantor, Inc.
Sanjeev K Mehra
director
$1.0M
125,000 shares
+36%
66Notable
AVTRbuy 2
Avantor, Inc.
Gregory T Lucier
director
$458k
50,000 shares
-
71Notable
AVTRbuy 2
Avantor, Inc.
Gregory L Summe
director
$940k
100,000 shares
+33%
66Notable
AVTRbuy
Avantor, Inc.
Sanjeev K Mehra
director
$3.9M
350,000 shares
-
74Notable
AVTRbuy
Avantor, Inc.
Emmanuel Ligner
President and CEO
$993k
87,500 shares
+45%
73Notable
AVTRbuy
Avantor, Inc.
Gregory L Summe
director
$1.1M
100,000 shares
+50%
63Notable
AVTRbuy
Avantor, Inc.
Gregory L Summe
director
$1.3M
100,000 shares
+100%
1Weak
AVTRsell10b5-1
Avantor, Inc.
Steven W Eck
SVP & Chief Accounting Officer
$40k
3,476 shares
-6%

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.

Gregory L Summe bought $375k of AVTR | InsiderTell