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Mr. Yingling received his B.S. degree in Accounting from the University of Missouri St. Louis in 1979 and holds certificates as a Certified Public Accountant and a Certified Cash Manager. Mr. Yingling worked for Storz Instrument Company a micro-surgical instrument manufacturer in a series of accounting positions from 1979 to 1983 and for Clayton Brokerage Company from 1983 to 1985. This was followed by several accounting tax and treasury positions at Venture Stores Inc. from 1985 to 1995. Mr. Yingling joined Tripos in May 1995 as U.S. Controller and was promoted to Corporate Controller & Treasurer in January 1999. In August 2001 Mr. Yingling was promoted to Vice President Chief Accounting Officer. | 