Steven J. Pully

Chairperson of the Board

Steven J. Pully, is the Company’s Chair of the Board since October 26, 2023.  Mr. Pully is currently a partner of Speyside Partners, an investment banking firm that he co-founded in May 2017. He also serves on the boards or in executive positions for various companies, including publicly-traded RumbleOn, Inc., where he serves as the Executive Chairman. Mr. Pully’s board service has spanned multiple industries, including airlines, amusement parks, energy and power, manufacturing, power sports, retail, restaurants, and technology. His board service has included multiple positions as chairman or lead director of the board, and also multiple chairmanships of audit, compensation, nominating and governance, and special committees. Previously, Mr. Pully served as General Counsel and as a Partner of the investment firm, Carlson Capital, L.P. from 2008 to 2014, as Managing Director in the investment banking division of Bank of America and as a Senior Managing Director in the investment banking department of Bear Stearns & Company. Mr. Pully is also an attorney and CPA, he is a Chartered Financial Analyst, and he also holds various FINRA licenses.

Elazar Rabbani, PhD


Dr. Rabbani is an Enzo Biochem founder and has served as the Company's Chairman of the Board since its inception in 1976 until January 2022. He also served as the Chief Executive Officer from inception until November 2021. Dr. Rabbani has authored numerous scientific publications in the field of molecular biology, in particular, nucleic acid labeling and detection. He is also the lead inventor of many of the Company's pioneering patents covering a wide range of technologies and products. Dr. Rabbani received his Bachelor of Arts degree from New York University in Chemistry and his Ph.D. in Biochemistry from Columbia University. He is a member of the American Society for Microbiology.

Bradley Radoff


Mr. Radoff is a proven investor and seasoned public company director with significant experience in the areas of corporate governance, capital allocation, operational turnarounds and strategic reviews. Mr. Radoff has held roles at some of the world’s top asset management firms and financial institutions, including Citadel and Third Point. He currently serves on the Board of VAALCO Energy, Inc. (NYSE: EGY), a Texas-based independent energy company, and Harte Hanks, Inc. (NASDAQ: HHS). Mr. Radoff previously served as a director of, Inc. (formerly NASDAQ: SPRT) and Pogo Producing Company (formerly NYSE: PPP). He graduated summa cum laude with a B.S. in Economics from The Wharton School at the University of Pennsylvania.

Mary Tagliaferri, MD


Mary Tagliaferri, was the Company's Chair of the Board between January 2022 and October 25, 2023. She currently serves on the Audit Committee. Dr. Tagliaferri is currently Executive Clinical Fellow and Senior Vice President and she was previously Chief Medical Officer at Nektar Therapeutics, a leading research-based biopharmaceutical company that discovers and develops innovative medicines in areas of high unmet medical need including treatments for cancer and auto-immune disease. Previously, she served as Chief Medical Officer and Chief Regulatory Officer for Kanglaite-USA and was Co-Founder, President and Board Member of Bionovo, Inc. She earned her Bachelor of Science degree at Cornell University and her medical degree at the University of California, San Francisco. Dr. Tagliaferri was named to the Women who Lead in Life Sciences and Most Influential Women in Business lists by the San Francisco Business Times in 2019 and was recognized as Woman of the Year, 2012, by the State of California, Assembly District 14. She has been lead author or contributor to approximately 70 journal publications.

Ian B. Walters, MD


Dr. Walters is an experienced entrepreneur and drug developer with leadership in the development of over 30 drugs in multiple therapeutic areas involving diverse technologies, leading to five new oncology drug approvals. His previous positions include Executive Director of Global Oncology Clinical Research and Business Development for Bristol-Myers Squibb, and Medical Director at Millennium Pharmaceuticals. Dr. Walters currently is CEO and Director of Portage Biotech, a publicly traded clinical stage biopharmaceutical company developing an innovative portfolio of immuno-oncology assets. He is also founder of seven of Portage’s portfolio companies.

Dr. Walters holds an MBA from the Wharton School of the University of Pennsylvania. He received his MD at the Albert Einstein College of Medicine and completed doctoral training in experimental medicine at The Rockefeller University.  Dr. Walters has been the lead author or contributor to approximately 60 journal publications.