BIOGEN IDEC INC. and THE BANK OF NEW YORK TRUST COMPANY, N.A., as Trustee INDENTURE Debt Securities Dated as of February 26, 2008Indenture • February 26th, 2008 • Biogen Idec Inc. • Biological products, (no disgnostic substances) • New York
Contract Type FiledFebruary 26th, 2008 Company Industry JurisdictionINDENTURE, dated as of February 26, 2008, by and between Biogen Idec Inc., a Delaware corporation, as Issuer (the “Company”), and The Bank of New York Trust Company, N.A., a national association, as Trustee (the “Trustee”).