David Greenwood currently serves as either Board Director or Advisor to several private companies. Between 1995 and December of 2011, Mr. Greenwood served as Chief Financial Officer and Chief Executive Officer of Geron Corporation, a biotechnology company in the fields of regenerative medicine and cancer. From 1979 to 1995, he held a series of senior positions with JPMorgan, an international banking firm. Mr. Greenwood, who holds an MBA from Harvard Business School, is known for his thought-leadership on biotech financing.