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Mike Rantz was responsible for Global Government Bond Trading at Goldman Sachs & Co. in London from 1995 to his retirement in 1999. During this time, Mr. Rantz was the Founding Chairman of Brokertec Global LLC, an electronic inter-dealer broker in the government bond markets. Prior to that, Mr. Rantz was responsible for the Goldman Sachs & Co. United States Government Primary Dealership based out of New York. Mr. Rantz joined Goldman Sachs in 1983 and became a Partner in 1992. In addition, he was responsible for Municipal Bond Sales, Trading and Underwriting from 1991 to 1993.

Mr. Rantz currently serves on the Investment Committee of Castilleja School. He previously served on the Cornell University College of Arts and Sciences Advisory Council from 2000 to 2008 and the Cornell University Council from 2002 to 2008. Mr. Rantz was a member of the Board of Trustees of the International Center for the Disabled in New York City where he was a member of the Finance and Audit Committees from 2003 to 2008, the Board of Trustees of the Phillips Brooks School in Menlo Park, where he was Chairman of the Finance and Investment Committees and a member of the Executive, Audit, and Development Committees from 2007 to 2012. Mr. Rantz holds a B.A. from Cornell University and an M.B.A. from the University of Chicago.