David B. Wellborn joined PMA in 1998. Previously, he was a director of Credit Suisse First Boston in London and New York, and acted as a senior relationship manager for large corporations and governmental entities. Prior to joining CSFB, he held senior positions at Swiss Bank Corp., Prudential Securities, and Citibank. Mr. Wellborn’s activity included advice on issuance and underwriting of debt and derivative securities, hedging strategies, and liability management. He holds a BA from Harvard University and an MBA from the Darden Graduate School of Business of the University of Virginia.