Management Team

Michael S. Weiss – Chairman of the Board of Directors

Mr. Weiss has served as Chairman of our Board of Directors since May 2015. Mr. Weiss has served in several capacities at Fortress Biotech; most recently he serves as Executive Vice Chairman since February 2014.  He also serves as Executive Chairman, President and Chief Executive Officer of TG Therapeutics, Inc., a company he founded in 2011. Mr. Weiss is currently Co-Portfolio Manager and Partner of Opus Point Partners, LLC, which he co-founded in 2009. From 2002 to 2009, Mr. Weiss was the Chairman and Chief Executive Officer of Keryx Biopharmaceuticals, Inc., where he helped the company acquire and develop its lead drug, Auryxia, as well as executed a strategic alliance for Auryxia with Japan Tobacco, Inc. and Torii Pharmaceutical Co., Ltd. worth more than $100 million. Mr. Weiss served as Chairman of the board of directors of National Holdings Corporation from 2011 to 2012. Mr. Weiss began his professional career as a lawyer with Cravath, Swaine & Moore LLP. He earned his J.D. from Columbia Law School and his B.S. in Finance from The University at Albany.

Manuel Litchman, M.D. – President, Chief Executive Officer and Director

Dr. Litchman has served as President and Chief Executive Officer and has been a member of Mustang’s Board of Directors since April 2017.  Dr. Litchman joined Mustang from Arvinas, LLC, where he served as President and Chief Executive Officer. While at Arvinas, Dr. Litchman oversaw the advancement of the company’s pipeline of protein-degradation therapeutics for the treatment of cancers and other diseases toward Investigational New Drug applications, as well as the execution of multi-target discovery collaborations with Merck and Genentech.  Prior to Arvinas, Dr. Litchman spent more than 18 years with Novartis Pharmaceuticals Corporation, where he held positions of increasing responsibility related to the development of Novartis’ oncology pipeline. Most recently, Dr. Litchman served as Senior Vice President and Executive Global Program Head, CTL019, Cell & Gene Therapies Unit, where he led a collaboration with the University of Pennsylvania investigating chimeric antigen receptor modified T cells (CAR Ts) directed against CD19 on B cell malignancies. Prior to the CTL019 collaboration, Dr. Litchman served as Novartis’ Vice President and Head, Oncology Business Development & Licensing. Earlier in his career, Dr. Litchman was a senior equity analyst at Ursus Capital and directed oncology / immunology clinical research at Hoffmann-La Roche Inc. Dr. Litchman received his M.D. from Yale University School of Medicine, and his B.A. from Princeton University. He completed his internal medicine residency and hematology-oncology fellowship at New York-Presbyterian Hospital / Weill Cornell Medical Center.

Brian Achenbach – Vice President, Finance and Corporate Controller

Mr. Achenbach has served as Vice President, Finance and Corporate Controller since November 2017. Mr. Achenbach brings to Mustang more than 25 years of experience in finance and accounting, including approximately 15 years in the pharmaceutical and medical product industries. Most recently, Mr. Achenbach served as Vice President and Corporate Controller at Amerigen Pharmaceuticals Limited, where he oversaw finance and accounting functions as the company established itself as a commercial organization in the U.S. and China. Prior to Amerigen, Mr. Achenbach served as Vice President of Finance for the Americas and Vice President of Global Financial Planning & Analysis at ConvaTec Group Plc, a global medical products and technologies company, where he led finance and accounting operations in the U.S., Canada and South America. Earlier in his career, Mr. Achenbach held roles of increasing responsibility in finance and accounting at Mylan N.V., Andrx Corporation (acquired by Watson Pharmaceuticals Inc. in 2006) and IVAX Corporation (acquired by Teva Pharmaceutical Industries Ltd. in 2005). Mr. Achenbach holds an M.B.A. in finance from Roosevelt University in Chicago, and a B.A. in economics from the University of Florida in Gainesville.