Catalyst Health Solutions, Inc.

Catalyst Health Solutions, Inc. (formerly HealthExtras, Inc.) is principally engaged in the management of prescription drug benefits. The Company’s subsidiaries include Catalyst Rx, a full-service pharmacy benefit manager (PBM) serving more than five million clients in the United States and Puerto Rico; HospiScript Services, LLC, a provider of pharmacy benefit management services to the hospice industry; and Immediate Pharmaceutical Services, Inc., a fully-integrated prescription mail service facility based out of Avon Lake, Ohio. The Company also offers Medicare Part D and Workers’ Compensation PBM services. Its clients include self-insured employers including state and local governments, managed care organizations, unions, hospices, third-party administrators and individuals.