PDL BIOPHARMA, INC. as Issuer and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. as Trustee SUPPLEMENTAL INDENTURE Dated as of September 17, 2019Supplemental Indenture • September 17th, 2019 • PDL Biopharma, Inc. • Biological products, (no disgnostic substances) • New York
Contract Type FiledSeptember 17th, 2019 Company Industry JurisdictionSUPPLEMENTAL INDENTURE, dated as of September 17, 2019 (this “Supplemental Indenture”), between PDL BioPharma, Inc., a Delaware corporation (the “Company”), and The Bank of New York Mellon Trust Company, N.A, as trustee (the “Trustee”) under the Indenture dated as of September 17, 2019, between the Company and the Trustee (as amended or supplemented from time to time in accordance with the terms thereof, the “Base Indenture”).