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Avantor (AVTR) Insider Trading & Ownership

Avantor logo
$7.98 -0.33 (-3.91%)
Closing price 05/11/2026 03:59 PM Eastern
Extended Trading
$8.10 +0.12 (+1.45%)
As of 05/11/2026 07:55 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Avantor (NYSE:AVTR) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
0.28%
Number Of
Insiders Buying
(Last 12 Months)
4
Amount Of
Insider Buying
(Last 12 Months)
$8.32M
Number Of
Insiders Selling
(Last 12 Months)
1
Amount Of
Insider Selling
(Last 12 Months)
$39.59K
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AVTR Insider Buying and Selling by Quarter

Avantor Insider and Congressional Trades History

Export
Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
5/8/2026
Gregory T Lucier
Gregory T Lucier
Director
Buy10,000$8.32$83,200.00  
5/1/2026
Simon Dingemans
Simon Dingemans
Director
Buy25,000$8.14$203,500.00  
3/10/2026
Sanjeev K Mehra
Sanjeev K Mehra
Director
Buy125,000$8.01$1,001,250.00  
2/19/2026
Gregory T Lucier
Gregory T Lucier
Director
Buy50,000$9.16$458,000.00  
2/12/2026
Gregory L Summe
Gregory L Summe
Director
Buy100,000$9.40$940,000.00  
12/5/2025
Sanjeev K Mehra
Sanjeev K Mehra
Director
Buy350,000$11.09$3,881,500.00  
10/30/2025
Gregory L Summe
Gregory L Summe
Director
Buy100,000$11.25$1,125,000.00  
8/13/2025
Gilbert Ray Cisneros, Jr.
Gilbert Ray Cisneros, Jr.
House (D-CA)
Sell$13.08$1,001 - $15,000
8/12/2025
Gilbert Ray Cisneros, Jr.
Gilbert Ray Cisneros, Jr.
House (D-CA)
Sell$12.65$1,001 - $15,000
8/5/2025
Steven W Eck
Steven W Eck
CAO
Sell3,476$11.39$39,591.64  
7/23/2025
Gilbert Ray Cisneros, Jr.
Gilbert Ray Cisneros, Jr.
House (D-CA)
Sell$13.60$1,001 - $15,000
6/17/2025
Lisa C. McClain
Lisa C. McClain
House (R-MI)
Sell$13.16$1,001 - $15,000
6/11/2025
Lisa C. McClain
Lisa C. McClain
House (R-MI)
Buy$13.55$1,001 - $15,000
5/23/2025
Gregory L Summe
Gregory L Summe
Director
Buy30,000$12.50$375,000.00  
5/22/2025
Gregory L Summe
Gregory L Summe
Director
Buy20,000$12.65$253,000.00  
(Data available from 1/1/2013 forward)

AVTR Insider Trading Activity - Frequently Asked Questions

0.28% of Avantor stock is owned by insiders. Learn more on AVTR's insider holdings.

The following insiders have purchased AVTR shares in the last 24 months: Gregory L Summe ($2,993,000.00), Gregory T Lucier ($541,200.00), Joseph R Massaro ($99,630.00), Sanjeev K Mehra ($4,882,750.00), and Simon Dingemans ($203,500.00).

Insiders have purchased a total of 843,100 AVTR shares in the last 24 months for a total of $8,720,080.00 bought.

The following insiders have sold AVTR shares in the last 24 months: James Bramwell ($65,877.74), and Steven W Eck ($213,947.85).

Insiders have sold a total of 15,666 Avantor shares in the last 24 months for a total of $279,825.59 sold.

Lisa C. McClain (R-MI) has bought shares of Avantor in the last year totaling $8,000. Gilbert Ray Cisneros, Jr. (D-CA) and Lisa C. McClain (R-MI) have sold shares totaling $32,000.

Avantor Active Insiders


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This page (NYSE:AVTR) was last updated on 5/12/2026 by MarketBeat.com Staff.
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