Ms. Brown was appointed to the company's board of directors in 2013. Ms. Brown currently serves on the board of directors of Targacept, Inc. and Biodel, Inc. She previously served on the boards of Trius Therapeutics, Inc., Tanox, Inc. (acquired by Genentech, Inc.), CovX (acquired by Pfizer, Inc.), Labopharm, Inc. (acquired by Paladin Labs Inc.), and MediQuest Therapeutics, Inc. From 2000 to 2003, Ms. Brown was Executive Vice President of Amylin Pharmaceuticals, Inc. and served as Advisor to the Chief Executive Officer until 2008. From 1995 to 1999, she worked for Dura Pharmaceuticals, Inc., finishing her tenure as Executive Vice President. Prior to this, Ms. Brown spent over 25 years with Eli Lilly and Company in progressively more senior roles. From 1992 to 1994, she was Vice President of IVAC Corporation and General Manager of its Vital Signs Division (a Lilly subsidiary). She was Vice President of Worldwide Marketing for Hybritech (another Lilly subsidiary), and led global marketing from 1986-1992. Ms. Brown holds a Bachelor of Science in Microbiology from Louisiana Tech University.

Dr. DiCorleto has served as one of the company’s directors since 2004. He is the Chairman of the Lerner Research Institute of the Cleveland Clinic and Chairman of the Department of Molecular Medicine at the Case School of Medicine. Dr. DiCorleto received his undergraduate training in chemistry at Rensselaer Polytechnic Institute and his doctorate in biochemistry from Cornell University. Dr. DiCorleto's research focuses on the molecular and cellular basis of atherosclerosis. He has been with the Cleveland Clinic since 1981, having served previously as Chairman of the Department of Cell Biology, as an Associate Chief of Staff, and as a member of the Clinic's Board of Governors and Board of Trustees. Dr. DiCorleto is currently serving, as the most recent past president, on the Executive Committee of the North American Vascular Biology Organization, as chair of the Vascular Biology study section of the national American Heart Association, and as a member of the Association of American Medical Colleges' Advisory Panel on Research.

Mr. Antal has served as one of the company's directors since July 2006. From 1996 to 2001, Mr. Antal served as Chief Financial Officer of Experian, and from 2001 to 2002 as Chief Investment Officer. Experian is a leading global provider of consumer and business credit information, direct marketing information services, and integrated customer relationship management processes. He also served on the Board of Directors of First American Real Estate Solutions, an Experian joint venture with First American Financial Corp. Mr. Antal earned a Bachelor of Science degree in Business Administration with an Accounting major from The Ohio State University in 1973. He became a Certified Public Accountant (Ohio) in 1975. Since 2002, Mr. Antal has served as an advisor to the board of directors for Plexus Vaccine, Inc., a biotech company, until it was acquired by SIGA Technologies in 2004. In December 2004, he joined the SIGA board of directors, and also currently serves on the audit and corporate governance committees. From May 2004 to August 2005, he was engaged as the Chief Financial Advisor to the Black Mountain Gold Coffee Co. In July 2005, he joined Pathway Data Inc, a privately held company engaged in consumer credit notification and identity theft assistance services, as its part time Chief Financial Officer.

Dr. Hohn has served as one of the company's directors since 2011 and was elected Chairman of the Board in 2013. Dr. Hohn is currently a Professor Emeritus and the Executive Director of Health Policy at Roswell Park Cancer Institute in Buffalo, New York, a position in which he has served since April 2007. Dr. Hohn also serves as a senior advisor to the current President of the Roswell Park Cancer Institute. From March 1997 to April 2007, Dr. Hohn served as President and Chief Executive Officer of the Roswell Park Cancer Institute and Principal Investigator on Roswell Park’s National Cancer Institute Cancer Center Support Grant. Prior to coming to Roswell Park, Dr. Hohn served as the Vice President for Clinical Affairs at the M.D. Anderson Cancer Center in Houston, Texas. Dr. Hohn is currently active in New York State cancer control initiatives with the American Cancer Society. He is also a former President and a current member of the Executive Committee of the National Comprehensive Cancer Network, an alliance of 21 leading cancer centers, and he serves as Vice Chair of the New York State Stem Cell Research Board. Dr. Hohn is also a member of the Board of Directors of CUBRC, a non-profit contract research corporation that is a subsidiary of the State University of New York system. Dr. Hohn has previously served as a member of a number of Western New York civic and professional boards, including the Buffalo Niagara Medical Campus, Hauptmann Woodward Medical Institute, Buffalo Niagara Partnership and the Buffalo Philharmonic Orchestra. Dr. Hohn received his undergraduate degree in Chemistry in 1964 at the University of Illinois at Urbana and his Doctorate of Medicine in 1970 from the University of Illinois College of Medicine at Chicago.

Mr. Principi was appointed to the company's board of directors in 2013. Mr. Principi currently serves on the boards of Engility Holdings, Inc., Mutual of Omaha, A.T. Kearney PSDS, the Lung Cancer Alliance and the Wounded Warrior Project. From 2006 to 2011, he was Senior Vice President of Government Relations at Pfizer, Inc. Prior to joining Pfizer, Mr. Principi served as the 4th United States Secretary of Veterans Affairs from 2001 to 2005, appointed by President George W. Bush. In 2005, he was appointed to chair the Military Base Realignment and Closure Commission that was responsible for recommending to the President and Congress the realignment and closure of military installations throughout the United States.From 1999 to 2001, Mr. Principi served as President of QTC Management Inc., the largest private provider of government-outsourced occupational health and disability examination services in the U.S. and was later named Chief Executive Officer and Executive Chairman. Prior to this, he was Senior Vice President at Lockheed Martin IMS Corp. He served as chief counsel and staff director of the U.S. Senate Armed Services Committee from 1993 to 1994 following his tenure as Deputy Secretary of Veterans Affairs from 1989 to 1992. From 1984 to 1988, he served as chief counsel and staff director of the U.S. Senate Committee on Veterans’ Affairs, following three years as counsel to the chairman of the Senate Armed Services Committee. He earned a Juris Doctor degree from Seton Hall University in 1975 and was assigned to the Navy’s Judge Advocate General Corps., and later appointed as legislative counsel for the Department of the Navy. Mr. Principi received a Bachelor’s degree from the U.S. Naval Academy and was awarded the Bronze Star with combat “V” for valor and several other military decorations for valor.

Mr. Principi was appointed to the company's board of directors in 2013. Mr. Principi currently serves on the boards of Engility Holdings, Inc., Mutual of Omaha, A.T. Kearney PSDS, the Lung Cancer Alliance and the Wounded Warrior Project. From 2006 to 2011, he was Senior Vice President of Government Relations at Pfizer, Inc. Prior to joining Pfizer, Mr. Principi served as the 4th United States Secretary of Veterans Affairs from 2001 to 2005, appointed by President George W. Bush. In 2005, he was appointed to chair the Military Base Realignment and Closure Commission that was responsible for recommending to the President and Congress the realignment and closure of military installations throughout the United States.From 1999 to 2001, Mr. Principi served as President of QTC Management Inc., the largest private provider of government-outsourced occupational health and disability examination services in the U.S. and was later named Chief Executive Officer and Executive Chairman. Prior to this, he was Senior Vice President at Lockheed Martin IMS Corp. He served as chief counsel and staff director of the U.S. Senate Armed Services Committee from 1993 to 1994 following his tenure as Deputy Secretary of Veterans Affairs from 1989 to 1992. From 1984 to 1988, he served as chief counsel and staff director of the U.S. Senate Committee on Veterans’ Affairs, following three years as counsel to the chairman of the Senate Armed Services Committee. He earned a Juris Doctor degree from Seton Hall University in 1975 and was assigned to the Navy’s Judge Advocate General Corps., and later appointed as legislative counsel for the Department of the Navy. Mr. Principi received a Bachelor’s degree from the U.S. Naval Academy and was awarded the Bronze Star with combat “V” for valor and several other military decorations for valor.

Mr. Saluck was appointed to the company's board of directors in 2013. Mr. Saluck has been the Managing Member of Mortar Rock Capital Management, LLC and the Portfolio Manager of Mortar Rock Capital LP, a value-oriented investment fund, since 2005. From 2002 to 2005, Mr. Saluck was a portfolio manager at the investment fund of Meisenbach Capital, LP and, from 2000 to 2002, Mr. Saluck was a senior analyst at Tyndall Partners, LLC, which invested in value-oriented equities and distressed debt. From 1999 to 2000, Mr. Saluck was an analyst at Highfields Capital Management, LLC, where he was responsible for special situations and risk arbitrage. Prior thereto, Mr. Saluck was an investment banker focused on mergers and acquisitions involving a variety of industries at Salomon Brothers Inc. Before becoming an investment banker, Mr. Saluck was a corporate and securities attorney, working at Cahill Gordon & Reindel LLP and then Tenzer Greenblatt LLP.  As an attorney, Mr. Saluck worked with numerous small capitalization companies assisting them in the execution of their financing and strategic plans. He received a Bachelor’s degree from the University of Pennsylvania, a Juris Doctor degree from the University of Virginia and an MBA from the Wharton School of the University of Pennsylvania with a concentration in finance and accounting. Mr. Saluck currently serves on the Board of Directors of the Connecticut Region of the Anti-Defamation League.