BIOGEN INC. — Director's Dealing 2015

Feb 11, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOGEN IDEC INC. (BIIB)
CIK: 0000875045
Period of Report: 2015-02-10

Reporting Person: Sandrock Alfred (Grp SVP, Chief Medical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-02-10	Common Stock	S	300	$397.113	Disposed	15417	Direct
2015-02-10	Common Stock	S	643	$398.095	Disposed	14774	Direct
2015-02-10	Common Stock	S	100	$399.08	Disposed	14674	Direct
2015-02-10	Common Stock	S	100	$400.22	Disposed	14574	Direct

Footnotes

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

F2: This represents the weighted average price for shares sold at a range between $396.87 (low) and $397.34 (high).

F3: Full information regarding the number of shares sold at each separate price will be provided upon request by the SEC staff, the issuer, or a security holder of the issuer.

F4: This represents the weighted average price for shares sold at a range between $397.94 (low) and $398.65 (high).