Christopher Viehbacher Biogen Inc. (BIIB) insider trading activity

BIIB Quotes by TradingView

Christopher Viehbacher is President and CEO of BIOGEN INC.. Currently has a direct ownership of 16,443 shares of BIIB, which is worth approximately $2.76 Million. The most recent transaction as insider was on Dec 01, 2025, when has been sold 3,404 shares (Common Stock) at a price of $177.78 per share, resulting in proceeds of $605,163. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 16.4K
28.39% 3M change
n/a 12M change
Total Value Held $2.76 Million

Christopher Viehbacher Transaction History

Date Transaction Value Shares Traded Shares Held Form
Dec 01 2025
SELL
Payment of exercise price or tax liability
$605,163 $177.78 p/Share
3,404 Reduced 17.15%
16,443 Common Stock
Dec 01 2025
BUY
Exercise of conversion of derivative security
-
7,040 Added 26.18%
19,847 Common Stock
Feb 07 2025
SELL
Payment of exercise price or tax liability
$452,461 $141.35 p/Share
3,201 Reduced 20.0%
12,807 Common Stock
Feb 07 2025
BUY
Exercise of conversion of derivative security
-
9,008 Added 36.01%
16,008 Common Stock
CV

Christopher Viehbacher

President and CEO
Cambridge, MA

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