BIOGEN INC. — Director's Dealing 2015

Dec 7, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOGEN INC. (BIIB)
CIK: 0000875045
Period of Report: 2015-12-03

Reporting Person: Sandrock Alfred (EVP CMO Neuro & Neurodegenerat)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-12-03	Common Stock	F	393	$275.44	Disposed	8181	Direct
2015-12-04	Common Stock	S	441	$277.00	Disposed	7740	Direct

Footnotes

F1: Sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934.