Quick Takeaways
- Jane Grogan has 1 issuer position tracked on this page.
- Estimated disclosed ownership value: $1,207,928.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Jane Grogan
- Location
- Cambridge, MA
- Summary
- The estimated net worth of Jane Grogan is at least $1,207,928 dollars as of 17 Feb 2026. Jane Grogan is the Head of Research of BIOGEN INC. and owns shares of BIOGEN INC. (BIIB) stock worth about $1.21M.
- Signature
- /s/ Wendell Taylor, attorney-in-fact for Dr. Grogan
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Jane Grogan 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. ($1,207,928).
- 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 Jane Grogan
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| BIIB | BIOGEN INC. | Head of Research | $1,207,928 | 13 Feb 2026 |
Insider Transactions Reported by Jane Grogan:
| 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.