SEC Insider Transactions from Stubblefield Michael.

Last updated: 2026-03-14 11:37 UTC | Total transactions: 18

Stubblefield Michael has filed 18 insider transactions across 2 companies since February 2023.

Most recent transaction: a gift of 76000 shares of Avantor, Inc. ($AVTR) on May 21, 2025.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
May 21, 2025 Avantor, Inc. $AVTR Stubblefield Michael President & CEO G Common Stock 76000 $0.00 1,917,522.0000 681,900,000 3.81% 0.01%
May 21, 2025 Avantor, Inc. $AVTR Stubblefield Michael President & CEO G Common Stock 76000 $0.00 1,917,522.0000 681,900,000 4.13% 0.01%
Feb. 24, 2025 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 6800 $17.47 1,981,399.0000 681,900,000 0.34% 0.00%
Feb. 25, 2025 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 4969 $17.56 1,976,430.0000 681,900,000 0.25% 0.00%
Feb. 20, 2025 Avantor, Inc. $AVTR Stubblefield Michael President & CEO A Common Stock 157232 $0.00 2,002,873.0000 681,900,000 8.52% 0.02%
Feb. 23, 2025 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 14674 $17.30 1,988,199.0000 681,900,000 0.73% 0.00%
Feb. 20, 2025 Avantor, Inc. $AVTR Stubblefield Michael President & CEO A Stock Options (Right to Buy) 380886 $0.00 380,886.0000 681,900,000 9999.99% 0.06%
Feb. 23, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO A Common Stock 107802 $0.00 1,845,641.0000 678,400,000 6.20% 0.02%
Feb. 23, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO A Stock Options (Right to Buy) 263558 $0.00 263,558.0000 678,400,000 9999.99% 0.04%
Feb. 22, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO A Common Stock 99075 $0.00 1,803,718.0000 678,400,000 5.81% 0.01%
Feb. 22, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 41177 $24.59 1,762,541.0000 678,400,000 2.28% 0.01%
Feb. 23, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 7422 $24.35 1,755,119.0000 678,400,000 0.42% 0.00%
Feb. 24, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 9595 $24.35 1,745,524.0000 678,400,000 0.55% 0.00%
Feb. 25, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 7685 $24.35 1,737,839.0000 678,400,000 0.44% 0.00%
Feb. 20, 2024 Avantor, Inc. $AVTR Stubblefield Michael President & CEO F Common Stock 9711 $24.05 1,704,643.0000 678,400,000 0.57% 0.00%
Aug. 5, 2023 Ingersoll Rand Inc. $IR Stubblefield Michael Not found M Common Stock 1857 $0.00 1,857.0000 426,300,000 9999.99% 0.00%
Aug. 5, 2023 Ingersoll Rand Inc. $IR Stubblefield Michael Not found M Restricted Stock Units 1857 $0.00 0.0000 426,300,000 100.00% 0.00%
Feb. 23, 2023 Ingersoll Rand Inc. $IR Stubblefield Michael Not found A Restricted Stock Units 3195 $0.00 3,195.0000 426,300,000 9999.99% 0.00%