BIOGEN INC. — Director's Dealing 2016

Sep 26, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOGEN INC. (BIIB)
CIK: 0000875045
Period of Report: 2016-09-22

Reporting Person: DORSA CAROLINE (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-09-22	Common Stock	M	2570	$53.64	Acquired	19663	Direct
2016-09-22	Common Stock	M	25000	$53.64	Acquired	44663	Direct
2016-09-22	Common Stock	S	27570	$314.00	Disposed	17093	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-09-22	Stock Option (Right to Buy)	$53.64	M	2570	Disposed	2020-01-03	Common Stock (2570)	Direct
2016-09-22	Stock Option (Right to Buy)	$53.64	M	25000	Disposed	2020-01-03	Common Stock (25000)	Direct

Footnotes

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

F2: The stock options become exercisable in three (3) equal annual installments commencing one year after the grant date of 01/04/2010.