Charles W. Federico has served as one of our directors since June 2007. From 2001 to April 2006, Mr. Federico served as President and Chief Executive Officer of Orthofix International N.V. and; from 1996 to 2001, he served as President of Orthofix Inc. From 1985 to 1996, Mr. Federico was President of Smith & Nephew Endoscopy (formerly Dyonics, Inc.). From 1981 to 1985, Mr. Federico served as Vice President of Dyonics. Previously he held management and marketing positions with General Foods Corporation, Puritan Bennett Corporation and LSE Corporation. Mr. Federico is a Trustee of the Orthopaedic Research and Education Foundation and a director of SRI/Surgical Express, Inc. and BioMimetic Therapeutics, Inc. Mr. Federico holds a B.S. in marketing from Fordham University.

Christopher C. Dewey has served as one of our directors since our inception in November 2004. From January 2007 to April 2011, Mr. Dewey has served as Vice-Chairman of the board of directors of National Holdings Corporation, a financial services organization operating through its subsidiary, National Securities. From December 2006 to December 2008, Mr. Dewey served as acting Chief Executive Officer and director of Z-KAT, Inc. Mr. Dewey has over 25 years experience on Wall Street, most recently as Executive Vice President of Jefferies & Company, Inc. from 1994 to December 2006. Mr. Dewey co-founded several companies, including Robotic Ventures LLC, Bonds Direct Securities LLC and Cannon Group Inc., a motion picture company that went public in 1972. Mr. Dewey holds an MBA from The Wharton School of the University of Pennsylvania.

Maurice R. Ferré, M.D. is the founding President, Chief Executive Officer and Director of MAKO Surgical Corp. In June 2007, he received the Ernst & Young Entrepreneur of the Year 2007 award for emerging companies in Florida. In 1993, Dr. Ferré founded Visualization Technology, Inc., a medical device company for image-guided surgery, where he served as Chief Executive Officer until April 2002 when Visualization Technology was acquired by GE Healthcare, the healthcare division of the General Electric Company.

Dr. Ferré served as Vice President of Strategic Development for GE Navigation, a Division of GE Healthcare from April 2002 until April 2004. In May 2004, Dr. Ferré became the Chief Executive Officer of Z-KAT, Inc., a surgical navigation device company, which eventually spun-off the orthopedic robotics segment that became the basis for the founding of MAKO Surgical. He holds an M.D. and a Master's degree in Public Health from Boston University.

Frederic H. Moll, M.D. has served as one of our directors since August 2007. In September 2002, Mr. Moll co-founded Hansen Medical, Inc. and is currently serving as a director. In November 1995, Dr. Moll co-founded Intuitive Surgical Inc., a medical device company, and served as its first Chief Executive Officer and later, its Vice President and Medical Director until September 2003. In 1989, Dr. Moll co-founded Origin Medsystems, Inc., a medical device company, which later became an operating company within Guidant Corporation, a medical device company, following its acquisition by Eli Lilly in 1992. Dr. Moll served as Medical Director of Guidant's surgical device division until November 1995. Dr. Moll holds a B.A. from the University of California, Berkeley, an M.S. from Stanford University and an M.D. from the University of Washington School of Medicine.

John G. Freund M.D. has served as one of the directors since October 2008. Dr. Freund has been a Managing Director of Skyline Ventures since 1997. Earlier in his career he held various positions at Acuson Corporation, a medical device company, including Executive Vice President. He was the co-founder of the Healthcare Group in the Corporate Finance Department of Morgan Stanley & Co., Inc., and was the original healthcare partner at Morgan Stanley Venture Partners. In 1995, Dr. Freund co-founded Intuitive Surgical, Inc., a medical device company, and served on Intuitive's board of directors until March 2000. Dr. Freund also serves on the board of directors of XenoPort Inc., The Growth Fund of America. Inc., Fundamental Investors, Inc., and the SmallCap World Fund, as well as a number of private companies. He received an M.D. from Harvard Medical School in 1980 and an M.B.A. from Harvard Business School in 1982, where he was a Baker Scholar.

Richard R. Pettingill has served as one of our directors since August 2010. Mr. Pettingill served as the President and Chief Executive Officer of Allina Hospitals and Clinics, Minnesota's largest healthcare organization, from 2002 until his retirement in 2009. While in this role, he also served on the board of directors of the Minnesota Hospital Association and the Minnesota Business Partnership. Prior to joining Allina Hospitals and Clinics, Mr. Pettingill served as Executive Vice President and Chief Operating Officer of Kaiser Foundation Health Plans and Hospitals from 1996 to 2002. From 1991 to 1995, he served as President and Chief Executive Officer of Camino Healthcare, a community based integrated delivery system. Mr. Pettingill is a director and member of the health IT standards, compensation and quality, compliance and ethics committees of Tenet Healthcare Corporation. Mr. Pettingill received a bachelor's degree from San Diego State University and a master's degree in health care administration from San Jose State University. He served as a 2010 Fellow in the Advanced Leadership Initiative program at Harvard University.

William D. Pruitt has served as one of our directors since June 2008. Mr. Pruitt is the President of Pruitt Enterprises, LP. From 1980 to 1999, Mr. Pruitt was the Managing Partner for Arthur Andersen LLP's Florida, Caribbean and Venezuela operations. During his career, Mr. Pruitt has served on the board of directors as a chairman of the audit committee for several companies. Mr. Pruitt is currently a board member and chairman of the audit committee of Swisher Hygiene, Inc. and he served as a board member and chairman of the audit committee of The PBSJ Corporation. Mr. Pruitt served as chairman of the audit committee of KOS Pharmaceuticals, Inc., a fully integrated specialty pharmaceutical company until its sale in 2006. He was also Chairman of the audit committee for Adjoined Consulting, Inc., a full-service management consulting firm, until it was merged into Kanbay International, a global consulting firm in February 2006. Mr. Pruitt has a Bachelor of Business Administration from the University of Miami and is a Certified Public Accountant (inactive).