Quick Takeaways
- Michael R. McDonnell has 3 issuer positions tracked on this page.
- Estimated disclosed ownership value: $4,109,054.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Michael R. McDonnell
- Location
- Danbury, CT
- Summary
- The estimated net worth of Michael R. McDonnell is at least $4,109,054 dollars as of 18 Feb 2026. Michael R. McDonnell is the EVP, Chief Financial Officer of BIOGEN INC. and owns shares of BIOGEN INC. (BIIB) stock worth about $3.47M. Michael R. McDonnell is the Director of MERIT MEDICAL SYSTEMS INC and owns shares of MERIT MEDICAL SYSTEMS INC (MMSI) stock worth about $604.4K. Michael R. McDonnell is the Director of BAXTER INTERNATIONAL INC and owns shares of BAXTER INTERNATIONAL INC (BAX) stock worth about $35.1K.
- Signature
- /s/ David S. Rosenbloom, as attorney in-fact for Michael R. McDonnell
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Michael R. McDonnell and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: BIOGEN INC. ($3,469,566).
- 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.
Official SEC Source
Filed on Form 4
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
See Original FilingOwnership of Michael R. McDonnell
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| BIIB | BIOGEN INC. | EVP, Chief Financial Officer | $3,469,566 | 10 Feb 2025 | ||
| MMSI | MERIT MEDICAL SYSTEMS INC | Director | $604,391 | -$330,418 | -35% | 30 May 2025 |
| BAX | BAXTER INTERNATIONAL INC | Director | $35,097 | 13 Feb 2026 |
Insider Transactions Reported by Michael R. McDonnell:
| 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.