Viehbacher Christopher - Insider Non-Derivative Transactions at BIOGEN INC. (BIIB) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Dec 1, 2025, Viehbacher Christopher's relationship to BIOGEN INC. (BIIB) is Director,Officer (President and CEO), and currently has 19,847 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other BIIB insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Viehbacher Christopher - Insider Non-Derivative Transactions of BIIB Common Stock

Viehbacher Christopher - Insider Non-Derivative Transactions at BIIB

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Dec 2, 2025	F -- (Common Stock)	3404	177.78	16443
Dec 2, 2025	M -- (Common Stock)	7040	0	19847
Feb 8, 2025	F -- (Common Stock)	3201	141.35	12807
Feb 8, 2025	M -- (Common Stock)	9008	0	16008