BIOGEN INC. — Director's Dealing 2015

Mar 11, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOGEN IDEC INC. (BIIB)
CIK: 0000875045
Period of Report: 2015-03-10

Reporting Person: SHERWIN STEPHEN A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-03-06	Common Stock	G	275	—	Disposed	4150	Direct
2015-03-10	Common Stock	M	6000	$59.82	Acquired	10150	Direct
2015-03-10	Common Stock	S	6000	$409.67	Disposed	4150	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-03-10	Stock Option (Right to Buy)	$59.82	M	6000	Disposed	2020-03-22	Common Stock (6000)	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 03/22/2010.