Updated: May 19, 2026

Michael Stubblefield

AVTRAvantor, Inc.SEC CIK: 0001776153
Estimated Net Worth
$79.7 Million4.0%vs Last Year
Last Updated: May 19, 2026 03:03 AM EST

Transaction Summary

Total Transactions32
Buy-Sell Ratio0.33
Buy Transactions1
Sell Transactions3

Transaction Volume

Total Volume-$31.87M
Net Volume$32.50M
Buy Volume$314.25K
Sell Volume-$32.19M

Trade Analysis

AVG Trade Size-$1.52M
Largest Trade$320.00K
Most Active MonthFeb
Most Active Year2023

Trading Sentiment

OverallBullish
Recent TradeNeutral
Last 90 Days0 Trades
ConvictionNone

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

Michael Stubblefield has an estimated net worth of $79.7 Million. This is based on reported shares across multiple companies, which include Avantor, Inc., and Ingersoll Rand Inc..



2021 was Michael Stubblefield's most active year for acquiring shares with 6 total transactions. Michael Stubblefield's most active month to acquire stocks was the month of January. 2021 was Michael Stubblefield's most active year for disposing of shares, totalling 11 transactions. Michael Stubblefield's most active month to dispose stocks was the month of January. 2020 saw Michael Stubblefield paying a total of $2,065,552.00 for 1,888,657 shares, this is the most they've acquired in one year. In 2020 Michael Stubblefield cashed out on 2,301,310 shares for a total of $15,805,940.44, their largest year based on trade value.

Holdings & Transactions

AVTRavantor, inc.
President & CEO Director
Updated: May 21, 2025VIEW QUOTE
Form TypeSEC Filing
1.92MMay 21View
-0.0111.77K$17.51-$206.05K1.98MFeb 24 - 25View
0.40523.44K$17.30-$253.86K2.37MFeb 20 - 23View
0.33371.36K2.11MFeb 23View
0.0333.20K$24.50-$1.61M1.74MFeb 22 - 25View
-0.019.71K$24.05-$233.55K1.70MFeb 20View
1.71MMay 26View
-0.08106.20K$20.28-$2.15M1.71MMay 17View
0.27323.81K$24.61-$371.71K2.06MFeb 23 - 25View
-0.0115.03K$24.54-$368.74K1.74MFeb 20View
0.12132.34K$23.90-$2.18M1.75MJan 31View
0.0415.00K$20.95$314.25K1.62MNov 16View
-0.08108.70K$31.33-$3.41M1.60MMay 17View
1.71MMay 04View
0.21264.16K$35.39-$278.38K1.52MFeb 23 - 25View
-0.0110.96K$34.00-$372.61K1.25MFeb 20View
-0.10141.30K$42.37-$5.99M1.26MScheduledSep 20View
-0.26487.70K$17.69-$14.08M1.40MScheduledJun 08 - 10View
-0.07106.20K$30.90-$3.28M1.40MMay 17View
0.21306.55K1.74MFeb 25View
-0.0110.14K$28.69-$290.95K1.44MFeb 22View
1.85MDec 11View
-0.21501.64K$14.38-$12.12M1.85MScheduledDec 04 - 07View
-0.08108.70K$17.86-$1.94M1.27MMay 17View
$1.60$320.00K2.47MMar 12View
0.58597.69K1.63MFeb 21View
29.281.00M1.03MMay 21View
34.15KView
IRingersoll rand inc.
Updated: Aug 08, 2023VIEW QUOTE
Form TypeSEC Filing
1.86KAug 05View
3.19K3.20KFeb 23View
1.86K1.86KAug 05View
View