JOHN ZABRISKIE. Dr. Zabriskie has served as a Kellogg Director since 1995. He is also co-founder and Director of PureTech Ventures, LLC, a firm that co-founds life science companies. In 2001, he became Chairman of the Board of Directors of MacroChem Corporation. In 1999, he retired as Chief Executive Officer of NEN Life Science Products, Inc., a position he had held since 1997. From November 1995 to January 1997, Dr. Zabriskie served as President and Chief Executive Officer of Pharmacia & Upjohn, Inc. Dr. Zabriskie is a director of the following public companies: Array Biopharma, Inc. and MacroChem Corporation. He is also a director of the following privately-held companies: Protein Forest, Inc., Puretech Ventures, L.L.C., ARCA Discovery and Cellicon Biotechnologies.