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Senior Management

Lindsay A. Rosenwald, M.D.

Dr. Rosenwald has served as a member of the Board of Directors since October 2009 and as Chairman, President and Chief Executive Officer of the Company since December 2013. Dr. Rosenwald also serves as a director of Mustang Bio, Inc., Chairman of the Board of Directors of Avenue Therapeutics, Inc., and a director of Checkpoint Therapeutics, Inc. From November 2014 to August 2015, he served as Interim President and Chief Executive Officer of Checkpoint Therapeutics, Inc. Dr. Rosenwald is also Co-Portfolio Manager and Partner of Opus Point Partners Management, LLC (“OPPM”), an asset management firm in the life sciences industry, which he joined in 2009. Prior to that, from 1991 to 2008, he served as the Chairman of Paramount BioCapital, Inc. Over the last 25 years, Dr. Rosenwald has acted as a biotechnology entrepreneur and has been involved in the founding and recapitalization of numerous public and private biotechnology and life sciences companies. Dr. Rosenwald received his B.S. in finance from Pennsylvania State University and his M.D. from Temple University School of Medicine. 

Michael S. Weiss
Executive Vice Chairman, Strategic Development

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. 

Robyn hunter
Chief Financial Officer

Ms. Hunter has served as our Chief Financial Officer since June 26, 2017 and also currently serves as our corporate secretary.  Ms. Hunter has more than 30 years of financial and operational experience in an array of industries. Since June 2011, Ms. Hunter has served as the Company’s Vice President and Corporate Controller where she has implemented financial and operational processes, procedures and policies to facilitate the Company’s execution of its growth strategy. From January 2006 to May 2011, Ms. Hunter served as Senior Vice President and Chief Financial Officer of Schochet Associates. From August 2004 to January 2006, Ms. Hunter served as the Corporate Controller for Indevus Pharmaceuticals. From 1990 to 2004, Ms. Hunter held several positions from Accounting Manager to Vice President and Treasurer of The Stackpole Corporation. Ms. Hunter holds a Bachelor of Arts degree in Economics from Union College in Schenectady New York.


Dr. Avgerinos has served as our Senior Vice President, Biologics Operations since June 2013. Dr. Avgerinos joined us from AbbVie, Inc., where he was Vice President, HUMIRA® Manufacturing Sciences and External Partnerships. In his 22-year career at AbbVie, Inc., formerly Abbott Laboratories, formerly BASF Bioresearch Corporation (BASF), Dr. Avgerinos was responsible for many aspects of biologics development and operations. These included the HUMIRA® operations franchise, global biologics process and manufacturing sciences, biologics CMC, manufacturing operations, and third-party manufacturing. During his tenure, Dr. Avgerinos led and participated in the development of numerous clinical candidates which included the launch of HUMIRA®. He supported expansion of the supply chain to over $9.0 billion in annual global sales. Dr. Avgerinos’ efforts on HUMIRA® have been recognized with numerous awards, including the prestigious Abbott’s Chairman’s award in 2011. Dr. Avgerinos received a B.A. in Biophysics from the University of Connecticut and a Ph.D. in Biochemical Engineering from the Massachusetts Institute of Technology.