Viehbacher Christopher bought BIIB
December 1, 2025 · Form 4 insider transaction
Viehbacher Christopher bought 7,040 shares of Biogen Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as option exercise and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Acquired (buy-side)
Shares
7,040
Price
$0.00
Total value
N/A
InsiderViehbacher Christopher
Role—
CompanyBiogen Inc. (BIIB)
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateDecember 1, 2025
Filing dateDecember 3, 2025
Shares owned after19,847
OwnershipDirect
10b5-1 planNo
AmendedNo