BIOGEN INC. and U.S. BANK NATIONAL ASSOCIATION, as Trustee INDENTURE Debt Securities Dated as ofIndenture • September 8th, 2015 • Biogen Inc. • Biological products, (no disgnostic substances) • New York
Contract Type FiledSeptember 8th, 2015 Company Industry JurisdictionINDENTURE, dated as of , 20 , by and between Biogen Inc., a Delaware corporation, as Issuer (the “Company”), and U.S. Bank National Association, a national association, as Trustee (the “Trustee”).