Viehbacher Christopher sold BIIB
December 1, 2025 · Form 4 insider transaction
Viehbacher Christopher sold 3,404 shares of Biogen Inc. at $177.78 per share, a transaction worth $605.2K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Disposed (sell-side)
Shares
3,404
Price
$177.78
Total value
$605.2K
InsiderViehbacher Christopher
Role—
CompanyBiogen Inc. (BIIB)
SecurityCommon Stock
Transaction codeF: Shares withheld for taxes
Transaction dateDecember 1, 2025
Filing dateDecember 3, 2025
Shares owned after16,443
OwnershipDirect
10b5-1 planNo
AmendedNo