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Company profile

BIOGEN INC. insider acquisitions

Company CIK 0000875045 · Reported insider acquisitions and filing context.

Company filings at SEC ↗
BIIB · Nasdaq

These are company listings. A transaction is linked to a particular security only when the filing provides enough information.

Company activity summary

By transaction date, as of October 21, 2026.

7 days30 days90 daysOverlapping periods · securities and currencies kept separate
30-day company acquisitions grouped by security, category, original code, and currency.
Type / codeReported securityTransactionsKnown purchase valueMissing amounts
Stock awardCode ARestricted Stock UnitDerivative · Currency not specified1Not applicable0
Exercise / conversionCode MCommon StockNon-derivative · Currency not specified1Not applicable0

Known purchase value sums available amounts for non-derivative purchases only. Missing amounts are excluded. “Currency not specified” does not establish that the amounts share a currency. These summaries use all matching loaded records, while the timeline below covers only the current page.

Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Godbout SeanGodbout SeanViehbacher ChristopherViehbacher ChristopherGrogan JaneGrogan JaneGodbout Sean · October 1, 2026 · Stock award · Restricted Stock UnitGodbout Sean · October 2, 2026 · Exercise / conversion · Common StockViehbacher Christopher · December 1, 2025 · Exercise / conversion · Common StockGrogan Jane · October 31, 2025 · Exercise / conversion · Common StockOct 31, 2025Oct 2, 2026
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

4 dated transactions · 3 of 3 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Oct 1, 2026BIOGEN INC.Restricted Stock UnitGodbout SeanStock award
Oct 2, 2026BIOGEN INC.Common StockGodbout SeanExercise / conversion
Dec 1, 2025BIOGEN INC.Common StockViehbacher ChristopherExercise / conversion
Oct 31, 2025BIOGEN INC.Common StockGrogan JaneExercise / conversion

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Share price & reported acquisitions

Daily closing prices from a separate source. The date window above also filters prices; reporting-owner and transaction-type selections filter the markers.

Price history is not available

Market-price history is not connected yet.

BIIB · Currency not specified. A marker uses that day's closing price, not the reported transaction price. No price is substituted for a missing trading day.

Reported acquisitions

Filing-date filters apply to the list and timeline. The summary above uses transaction dates.

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Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedReporting ownersType / securityQuantityPrice / reference valueDetails
Trade:
Godbout SeanChief Accounting Officer
Stock awardRestricted Stock UnitDerivative security · Code A9850Value: 0Currency not specifiedView ↗
Trade:
Godbout SeanChief Accounting Officer
Exercise / conversionCommon StockNon-derivative security · Code M270Value: 0Currency not specifiedView ↗
Trade:
Viehbacher ChristopherPresident and CEO · Director
Exercise / conversionCommon StockNon-derivative security · Code M7,0400Value: 0Currency not specifiedView ↗
Trade:
Grogan JaneHead of Research
Exercise / conversionCommon StockNon-derivative security · Code M6950Value: 0Currency not specifiedView ↗

Reporting owners are associated with a filing. Jointly reported amounts are not allocated to individual owners. Historical coverage is still being built. Read the methodology →