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Michael Stubblefield

CIK 1776153 · President & CEO · last filed 2025-05-21

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$16.71M

Companies

3

Total Filings

30

Lifetime Open-Market Net

-$35.20M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
AVTR President & CEO 1,764,513 $9.39 $16.57M $314.2K 13 2025-05-21
IR Director 1,857 $74.00 $137.4K $0 3 2023-08-08
Avantor, Inc. (AVTRpA) Delisted President and CEO 1,713,041 $90.81 $155.56M -$35.52M 14 2022-05-06

Recent Filings · Page 3 of 3

30 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2021-06-10 Avantor, Inc. (AVTRpA) Delisted Mixed — -$14.08M EDGAR
2021-05-19 Avantor, Inc. (AVTRpA) Delisted Tax (F) −106,200 -$3.28M EDGAR
2021-03-01 Avantor, Inc. (AVTRpA) Delisted Grant (A) +72,359 $0 EDGAR
2021-02-23 Avantor, Inc. (AVTRpA) Delisted Tax (F) −10,141 -$290.9K EDGAR
2020-12-15 Avantor, Inc. (AVTRpA) Delisted Gift (G) — $0 EDGAR
2020-12-08 Avantor, Inc. (AVTRpA) Delisted Mixed +580,330 -$12.12M EDGAR
2020-05-19 Avantor, Inc. (AVTRpA) Delisted Tax (F) −108,700 -$1.94M EDGAR
2020-03-13 Avantor, Inc. (AVTRpA) Delisted Exer (M) +200,000 $320.0K EDGAR
2020-02-25 Avantor, Inc. (AVTRpA) Delisted Grant (A) +141,483 $0 EDGAR
2019-05-23 Avantor, Inc. (AVTRpA) Delisted Grant (A) +1,000,000 $0 EDGAR
Showing 21–30 of 30
Page 3 of 3
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.