Michael S Weiss

Mr. Weiss has served as our Executive Vice Chairman, Strategic Development since February 2014. Mr. Weiss also serves as Executive Chairman of the Board of Directors of Mustang Bio, Inc., a director of Avenue Therapeutics, Inc. and Chairman of the Board of Directors of Checkpoint Therapeutics, Inc. Since December 2011, Mr. Weiss has served in multiple capacities at TG Therapeutics, Inc. and is currently its Executive Chairman, Chief Executive Officer and President. Mr. Weiss is a co-founder of and has been a managing partner and principal of OPPM since 2008. Mr. Weiss earned his J.D. from Columbia Law School and his B.S. in Finance from The University at Albany. He began his professional career as a lawyer with Cravath, Swaine & Moore LLP. In 1999, Mr. Weiss founded Access Oncology which was later acquired by Keryx Biopharmaceuticals (NASDAQ: KERX) in 2004. Following the merger, Mr. Weiss remained as Chief Executive Officer of Keryx and grew the company to close to a $1.0 billion market capitalization company at its peak.