BIOGEN INC. insider trading

BIIBNASDAQ

$219.88-2.94 (-1.32%)as of Oct 2, 2026

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+41.6%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Open market purchase

Open market sell

Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

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Key players

SHSusan H. AlexanderEVP Chief Legal Officer0.0419%of company
CDCaroline DorsaDirector0.021%of company
CVChristopher ViehbacherPresident and CEO0.0203%of company
EKEric K. RowinskyDirector0.0175%of company
MRMichael R. McDonnellEVP, Chief Financial Officer0.0165%of company
GGGinger GregoryEVP, Human Resources0.0151%of company
NMNicole MurphyHead of Pharm Ops and Tech0.0133%of company
SAStephen A. SherwinDirector0.0103%of company
RKRobin KramerChief Financial Officer0.0078%of company
JBJesus B. MantasDirector0.0076%of company

AI Activity Analysis

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Insider activity

Fromto

Company	Insider / role	Action	ΔOwn	Avg price	Amount
BIIB	Lloyd MinorDirector	Open market sell$119K	-18.1%	$200.96	$119K	Aug 4, 2026	Aug 5, 2026
BIIB	Lloyd MinorDirector	Open market sell$121K	-15.3%	$203.34	$121K	Aug 3, 2026	Aug 5, 2026
BIIB	Nicole MurphyHead of Pharm Ops and Tech	Open market purchase$585	0.0%	$195.04	$585	Feb 12, 2026	Feb 17, 2026
BIIB	Priya SinghalHead of Development	Open market sell$532K	-24.9%	$199.83	$532K	Feb 9, 2026	Feb 10, 2026
BIIB	Priya SinghalHead of Development	Open market sell$134K	-10.7%	$179.30	$134K	Feb 2, 2026	Feb 3, 2026

End of history · 5 transactions