Christopher A. Viehbacher owns 0.02% of Biogen
29,924 shares as of the February 13, 2026 filing, worth $7M at the latest close.
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Free.
The stake
0.02%
worth $7M at the latest close
Stake rank
#1,949
by dollar value of the stake
Last sale
None
no sales since 2016
Last buy
None
no purchases since 2016
Christopher A. Viehbacher owns 0.02% of BIOGEN INC.: 29,924 of 147,753,998 shares, worth about $7M at the 2026-10-16 close. The stake has moved from 0.00% in 2022 to 0.02% on 2026-06-30.
How the stake is held
as of the Feb 6, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Feb 6, 2026 · Form 4 ↗
HELD DIRECTLY
29,924
100.0%
THE STAKE
29,924
0.02%