Stiles Barbara Alexander

From October 1999 until January 2004, Ms. Alexander served as a senior advisor of UBS Securities and its predecessors, which we refer to as UBS. Before that time, beginning in January 1992, she served as a managing director of UBS, where she managed the Construction and Furnishings Group (North America) in the corporate finance department. Prior to joining UBS, Ms. Alexander was a managing director in the corporate finance department of Salomon Brothers. Ms. Alexander is an executive fellow and past chairman of the board of the Joint Center for Housing Studies at Harvard University and is currently a member of that board's executive committee. Ms. Alexander also serves as a director of Federal Home Loan Mortgage Corporation (Freddie Mac) and QUALCOMM Incorporated.