BIOGEN INC. — Director's Dealing 2015

Dec 3, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOGEN INC. (BIIB)
CIK: 0000875045
Period of Report: 2015-12-01

Reporting Person: Karaboutis Adriana (EVP, Tech. and Bus. Solutions)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-12-01	Common Stock	F	171	$290.04	Disposed	7923	Direct
2015-12-02	Common Stock	S	48	$289.14	Disposed	7875	Direct

Footnotes

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