Viehbacher Christopher 4
4 · BIOGEN INC. · Filed Dec 3, 2025
Insider Transaction Report
Form 4
BIOGEN INC.BIIB
Viehbacher Christopher
DirectorPresident and CEO
Transactions
- Exercise/Conversion
Common Stock
2025-12-01+7,040→ 19,847 total - Tax Payment
Common Stock
2025-12-01$177.78/sh−3,404$605,163→ 16,443 total - Exercise/Conversion
Restricted Stock Unit
2025-12-01−7,040→ 0 total→ Common Stock (7,040 underlying)
Footnotes (2)
- [F1]Each Restricted Stock Unit ("RSU") represents the right to receive, at settlement, one share of common stock.
- [F2]Each RSU vested on the third anniversary of the grant date of December 1, 2022.