Biogen Idec to Present at the Cowen and Company 33rd Annual Healthcare Conference

  Biogen Idec to Present at the Cowen and Company 33rd Annual Healthcare
  Conference

Cowen Group Healthcare Conference 2013

Business Wire

WESTON, Mass. -- February 27, 2013

Biogen Idec Inc. (NASDAQ: BIIB) announced today that it will present at the
Cowen and Company 33^rd Annual Healthcare Conference. The webcast will be live
on Monday, March 4, 2013 at 1:30p.m. ET. To access the live webcast, please
visit Biogen Idec’s Investors section at www.biogenidec.com. An archived
version of the webcast will be available for 14 days following the
presentation.

About Biogen Idec

Through cutting-edge science and medicine, Biogen Idec discovers, develops and
delivers to patients worldwide innovative therapies for the treatment of
neurodegenerative diseases, hemophilia and autoimmune disorders. Founded in
1978, Biogen Idec is the world’s oldest independent biotechnology company.
Patients worldwide benefit from its leading multiple sclerosis therapies, and
the company generates more than $5 billion in annual revenues. For product
labeling, press releases and additional information about the company, please
visit www.biogenidec.com.

Contact:

Biogen Idec
Karen Jewell, 781-464-2442
Investor Relations