AVTR
+$0
161,237 sh
AVTR
Avantor, Inc.
SEC CIK 1722482
$9.39
−15.7% · 90 days
90-day buys
$286.7K
2 open-market
90-day sells
$0
0 open-market
Net insider flow
+$286.7K
Net buying
Filings shown
56
Most recent
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At a glance
Over the last 90 days, insiders at AVTR have bought a net $286.7K of stock (2 open-market buys vs 0 sells).
Largest recent trade: Mehra Sanjeev K, AVTR's Director, spent $3.88M of their own money on 350,000 shares at $11, opening a brand-new position.
Most active filer: Eck Steven W, with 12 transactions among the recent filings shown.
Insider transaction history
Form 4 filings for AVTR, newest firstAVTR
+$0
80,618 sh
AVTR
+$0
134,364 sh
AVTR
Summe Gregory L, AVTR's Director, spent $940K of their own money on 100,000 shares at $9, growing their stake 33%.
+$940K
100,000 sh @ $9
AVTR
Mehra Sanjeev K, AVTR's Director, spent $3.88M of their own money on 350,000 shares at $11, opening a brand-new position.
+$3.88M
350,000 sh @ $11
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AVTR
Ligner Emmanuel, AVTR's CEO, spent $993.1K of their own money on 87,500 shares at $11, growing their stake 45%.
+$993.1K
87,500 sh @ $11
AVTR
Summe Gregory L, AVTR's Director, spent $1.13M of their own money on 100,000 shares at $11, growing their stake 50%.
+$1.13M
100,000 sh @ $11
AVTR
Summe Gregory L, AVTR's Director, spent $1.26M of their own money on 100,000 shares at $13, growing their stake 100%.
+$1.26M
100,000 sh @ $13
AVTR
−$39.6K
3,476 sh @ $11
AVTR
Summe Gregory L, AVTR's Director, spent $375K of their own money on 30,000 shares at $13, growing their stake 43%.
+$375K
30,000 sh @ $13
AVTR
Summe Gregory L, AVTR's Director, spent $253K of their own money on 20,000 shares at $13, growing their stake 40%.
+$253K
20,000 sh @ $13
AVTR
Summe Gregory L, AVTR's Director, spent $300K of their own money on 25,000 shares at $12, growing their stake 100%.
+$300K
25,000 sh @ $12
AVTR
Massaro Joseph R, AVTR's Director, spent $99.6K of their own money on 8,100 shares at $12, growing their stake 30%.
+$99.6K
8,100 sh @ $12
AVTR
Summe Gregory L, AVTR's Director, spent $312.5K of their own money on 25,000 shares at $13, opening a brand-new position.
+$312.5K
25,000 sh @ $13
AVTR
−$17.6K
1,033 sh @ $17
AVTR
−$86K
4,907 sh @ $18
AVTR
−$88.3K
3,525 sh @ $25
AVTR
−$94.4K
3,685 sh @ $26
AVTR
−$156.4K
7,577 sh @ $21
AVTR
−$696.7K
17,383 sh @ $40
AVTR
−$580.7K
18,488 sh @ $31
AVTR
−$87.2K
3,036 sh @ $29
AVTR
−$281.9K
9,468 sh @ $30
AVTR
−$1.19M
40,000 sh @ $30
AVTR
−$381.2K
14,286 sh @ $27
AVTR
−$409.6K
22,987 sh @ $18
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About AVTR insider activity
This page tracks every recent Form 4 filed for Avantor, Inc. with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.
The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.
Frequently asked questions
How often is AVTR insider data updated?
Continuously. We read from SEC EDGAR, so new Form 4 filings for Avantor, Inc. usually appear here within minutes of being accepted by the SEC.
What does "net insider flow" mean?
It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.
Why do some rows show grants or option exercises instead of buys?
Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.
Is this investment advice?
No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.