Donald J. Elmer, Chairman of the Board

Mr. Elmer is the managing general partner of Pacific Horizon Ventures. He is currently a board member of ViaCyte, Inc. He has extensive prior board experience and has successful operational experience over a twelve-year period in early-stage technology companies, including Cascadia Technology Corporation-a medical electronics company-and Cygnet Systems Corporation-a software developer. Mr. Elmer received his M.A. from the University of Pennsylvania.