Dr. Van Bokkelen co-founded Athersys in October 1995 and has served as Chief Executive Officer and a director since Athersys' founding. Prior to May 2006, he also served as Athersys' President. He has served as Chairman of Athersys' Board of Directors since August 2000. Dr. Van Bokkelen is the current Chairman of the Center for Stem Cells and Regenerative Medicine, and has served on a number of other boards, including the Biotechnology Industry Organization's ECS Board of Directors from 2001 to 2004, the Kent State University Board of Trustees from 2001 to 2004 and serves as an advisor to Early Stage Partners, a venture capital firm. He received his Ph.D. in Genetics from Stanford University, his B.A. in Economics from the University of California at Berkeley, and his B.A. in Molecular Biology from the University of California at Berkeley.

Dr. Harrington co-founded Athersys in October 1995 and has served as Athersys' Executive Vice President and Chief Scientific Officer and as a director since Athersys' founding. Dr. Harrington led the development of the RAGE technology as well as its application for gene discovery, drug discovery and commercial protein production applications. He is a listed inventor on 20 issued or pending U.S. patents, has authored 20 scientific publications, and has received numerous awards for his work, including being named one of the top international young scientists by MIT Technology Review in 2002. Dr. Harrington has overseen the therapeutic product development programs at Athersys since their inception, and during his career he has also held positions at Amgen and Scripps Clinic. He received his Ph.D. in Cancer Biology from Stanford University and his B.A. in Biochemistry and Cell Biology from the University of California at San Diego.

Dr. Milne has been a director of Athersys since January 2003 after his retirement in 2002 from Pfizer Inc, a pharmaceutical company, where he most recently served as President of Worldwide Strategic and Operations Management and Executive Vice President of Global Research and Development. He joined Pfizer Inc in 1970 and held a variety of positions conducting both chemistry and pharmacology research. Dr. Milne is a Venture Partner of Radius. Dr. Milne became Director of the Department of Immunology and Infectious Diseases at Pfizer Inc in 1981, was Executive Director from 1984 to 1985 and was Vice President of Research and Development from 1985 to 1988. He was appointed Senior Vice President in 1988 and President of Central Research in 1993 with global responsibility for Human and Veterinary Medicine R&D. Dr. Milne serves as a director of Mettler-Toledo, Inc., Charles River Laboratories, Inc., MedImmune Inc., and Aspreva Pharmaceuticals Inc. He also serves on the board of the New York Botanical Garden and the Mystic Aquarium/Institute for Exploration. Dr. Milne received his B.S. in Chemistry from Yale University and his Ph.D. in Organic Chemistry from Massachusetts Institute of Technology.

Mr. Mulligan has served as our Director since June 2007. Mr. Mulligan has been Director of Athersys since October 1998. Mr. Mulligan joined Primus Venture Partners, a Cleveland-based private equity firm and an investor in Athersys, in 1985 from McKinsey & Company, Inc. Mr. Mulligan has served as a Managing Director of Primus since 1987. Mr. Mulligan serves as a director of several private companies and Universal Electronics, Inc. Mr. Mulligan is a trustee of The Cleveland Clinic Foundation and chairs the Advisory Board of CCF Innovations, which is responsible for commercializing technology developed at the Cleveland Clinic. Mr. Mulligan is also a trustee of Denison University and the Western Reserve Land Conservancy. Mr. Mulligan received his B.A. in economics from Denison University and his M.B.A. from the University of Chicago.

Mr. Davis has served as our Director since June 2007. Mr. Davis is a Managing Partner of Radius Ventures, a health and life sciences venture capital firm, which he co-founded in 1997. Mr. Davis currently serves on the board of directors of Health Language, Inc. and Heartscape Technologies, Inc., both Radius portfolio companies. He is also a member of the board of HealthCorps, a charitable organization engaged in educating youth on diet, nutrition and exercise. Mr. Davis earned an M.B.A. from the Kellogg School of Management at Northwestern University and a B.A. in Economics from The State University of New York at Binghamton.

Dr. Loop has served as our Director since June 2007. Dr. Loop is currently retired. Until his retirement in October 2004, Dr. Loop was the CEO and Chairman of the Board of Governors of The Cleveland Clinic Foundation from 1989 to 2004. Dr. Loop is a Venture Partner of Radius Ventures Partners II, L.P. Dr. Loop was president of the American Association for Thoracic Surgery, Chairman of the Residency Review Committee, and a member of the American Board of Thoracic Surgery. Dr. Loop has received honorary degrees from Cleveland State University, Purdue University and St. Louis University among many other international awards. He currently serves on two public boards, Tenet Healthcare Corporation and Intuitive Surgical, Inc. Dr. Loop received his M.D. from the George Washington University.

Dr. Sheffery has served as our Director since June 2007. Dr. Sheffery is a founding General Partner of OrbiMed Advisors, LLC, a healthcare investment firm, and Co-Head of Private Equity. Dr. Sheffery was formerly Head of the Laboratory of Gene Structure and Expression at Memorial Sloan-Kettering Cancer Center. He received both his Ph.D. in Molecular Biology and his B.A. in Biology from Princeton University. Dr. Sheffery joined Mehta and Isaly in 1996 as a Senior Analyst covering the biotechnology industry. Since 1998, Dr. Sheffery had been a General Partner of OrbiMed Advisors, LLC. He is currently a Director of Affimed Therapeutics AG, Supernus Pharmaceuticals, Inc. and Pieris AG.

Mr. Randall has served as our Director since September 4, 2007. Mr. Randall is an independent financial consultant and previously was Senior Vice President and Chief Financial Officer of Eximias Pharmaceutical Corporation, a development-stage drug development company, from 2004 to 2006. From 2002 to 2004, Mr. Randall served as Senior Vice President and Chief Financial Officer of i-STAT Corporation, a publicly-traded manufacturer of medical diagnostic devices that was acquired by Abbott Laboratories in 2004. From 1995 to 2001, Mr. Randall was Vice President and Chief Financial Officer of CFM Technologies, Inc., a publicly-traded manufacturer of semiconductor manufacturing equipment. Mr. Randall currently serves on the boards of directors of Point 5 Technologies, Inc., Rapid Micro Biosystems, Inc., Acorda Therapeutics, Inc. and Opexa Therapeutics, Inc. Mr. Randall received a B.S. in accounting from The Pennsylvania State University and an M.B.A. from Northeastern University.