BIOGEN INC. — Director's Dealing 2013

Apr 3, 2013

SEC Form 4/A — Form 4/A

Issuer: BIOGEN IDEC INC. (BIIB)
CIK: 0000875045
Period of Report: 2013-04-01

Reporting Person: SCANGOS GEORGE A (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-04-01	Common Stock	S	1598	$193.66	Disposed	52107	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5378	Indirect
Common Stock	5378	Indirect

Footnotes

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

F2: This amendment is being filed solely to file the power of attorney as an exhibit. No changes have been made to the transactions reported by the reporting person in his Form 4 filed with the SEC on April 2, 2013.