Michael P. Gray

Chief Operating and Chief Financial Officer

Mr. Gray  has served as our Chief Operating Officer and Chief Financial Officer  since December 2006. From December 2003 until December 2006, Mr. Gray  served as our Vice President of Finance and Chief Financial Officer and  served as our Senior Director of Finance and Controller from August  2000 until December 2003.  Mr. Gray held  financial positions including Controller and de Facto Chief Financial  Officer at Reprogenesis, a predecessor biotechnology company, from  January 1998 until July 2000.  Mr. Gray previously served as an audit professional for the accounting and consulting firm of Ernst & Young, LLP.  Mr. Gray is a certified public accountant, holds an M.B.A. from the F.W. Olin Graduate School of Business at Babson College, and has a B.S. in accounting from Bryant College.