Quick Takeaways
- Michael Stubblefield has 2 issuer positions tracked on this page.
- Estimated disclosed ownership value: $24,466,843.
- Recent insider filing activity is available below.
Insider Trading & Ownership of Michael Stubblefield
- Location
- Radnor, PA
- Summary
- The estimated net worth of Michael Stubblefield is at least $24,466,843 dollars as of 21 May 2025. Michael Stubblefield is the President & CEO, Director of Avantor, Inc. and owns shares of Avantor, Inc. (AVTR) stock worth about $24.33M. Michael Stubblefield is the Director of Ingersoll Rand Inc. and owns shares of Ingersoll Rand Inc. (IR) stock worth about $133.5K.
- Signature
- /s/ Scott Baker, as Attorney-in-Fact
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Michael Stubblefield and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: Avantor, Inc. ($24,333,353).
- Past-year value change for that position: .
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Michael Stubblefield
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| AVTR | Avantor, Inc. | President & CEO, Director | $24,333,353 | 21 May 2025 | ||
| IR | Ingersoll Rand Inc. | Director | $133,490 | 05 Aug 2023 |
Insider Transactions Reported by Michael Stubblefield:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.