Christopher Viehbacher

BIIB

Christopher Viehbacher serves as President and CEO at Biogen Inc. (BIIB). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

3 trades

$3.27M

Net Position

Net Seller

$3.27M

Companies Traded

BIIB

Active Period

Feb 2025 – Feb 2026

3 total trades

Most Recent

Sell BIIB

Feb 6, 2026 · $2.21M

Christopher Viehbacher's Insider Trading at Biogen Inc. (BIIB)

Buys

0 · $0.00

Sells

3 · $3.27M

Total Shares Bought

Total Shares Sold

17,585

BIIB Price Chart

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Date	Type	Shares	Avg Price	Value
Feb 6, 2026	Sell	10,980	$201.18	$2.21M
Dec 3, 2025	Sell	3,404	$177.78	$605.2K
Feb 10, 2025	Sell	3,201	$141.35	$452.5K

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