David D. Halbert, Founder and Chairman
 
David D. Halbert is the founder and Chairman of Caris, Ltd. Prior to forming Caris, Mr. Halbert was chairman of the board, president and chief executive officer of AdvancePCS, the nation's leading independent health improvement company. Mr. Halbert founded AdvancePCS in 1987 and successfully guided the firm from a small, privately owned company into a Fortune 500 corporation that became the largest provider of pharmacy benefit management services in the nation. AdvancePCS grew into a leadership position in the industry with its health improvement offerings, which helped AdvancePCS clients and their members improve quality of care while lowering health care costs. AdvancePCS served more than 75 million people - one in every four Americans - and managed 600 million prescription transactions annually, representing approximately $28 billion in drug expenditures.
 
Under Mr. Halbert's direction, AdvancePCS recorded 39 consecutive quarters of record earnings with a compound annual earnings growth rate of 84% for the five years prior to the merger. While the company continually innovated to meet emerging client needs, Halbert supplemented its internal development with eleven strategic acquisitions. In March, 2004, AdvancePCS consummated its $7.4 billion merger with CaremarkRx, generating a 36% premium to AdvancePCS shareholders.
 
Mr. Halbert brings to his current position more than 25 years of management experience in the energy, financial and health care industries. Before AdvancePCS, he founded Halbert & Associates Inc., an investment company that both formed and financed a number of projects and companies in the banking, real estate, energy and health care fields and still serves as General Partner to the Caris group of companies.