Team

our chairman and chief executive officer since June 2021, is a life sciences industry veteran with more than 21 years of experience advising, investing and transacting in the healthcare sector. Mr. Siegel is the founder and chief executive officer of JBS Healthcare Ventures, a firm focused on developing cost effective solutions to improve healthcare outcomes since its formation in 2017. Previously, he was a partner and healthcare sector head at Kingdon Capital Management, a New York City-based investment management company, from 2011 until 2017. Prior to joining Kingdon, Mr. Siegel was a healthcare portfolio manager at SAC Capital Advisors from 2005 until 2011; an associate director of pharmaceutical and specialty pharmaceutical research at Bear, Stearns & Co.; a pharmaceuticals research associate at Dresdner Kleinwort Wasserstein; and a consultant in the Life Sciences Division of Computer Sciences Corporation. Mr. Siegel has worked as a research associate at the Novartis Center for Immunobiology at Harvard Medical School where he published and presented at conferences in the field of Xenotransplantation and as a research assistant at Tufts University School of Medicine. He is also a director at Jaguar Health, Inc. since 2018 and Sol-Gel Technologies Ltd since September 2018, both Nasdaq listed companies, and has served on the board of advisors of Vitalis LLC, a private pharmaceutical company, since March 2019. Previously he served on the board of directors of Lumara Health, a private pharmaceutical company from September 2013 through October 2013 and was a board observer from November 2013 to November 2014. Mr. Siegel received a BS in Psychology from Tufts University in 1995 and an MBA from Columbia Business School in 1999.

has served as our chief financial officer since July 2021. Mr. Geffken is a founder and Managing Director of Danforth Advisors, LLC, or Danforth, a strategic, financial and thought partner to public and private life science companies across all stages of the corporate life cycle. Since its founding in 2011, Danforth has consulted with more than 600 life science companies. Mr. Geffken brings more than 30 years of experience to his work for Danforth clients, ranging from start-ups to publicly traded companies with $1 billion+ market capitalizations. Mr. Geffken has been the Chief Financial Officer for Phoenix Biotech Acquisition Corp, a blank check company since June 2021. Mr. Geffken served as chief financial officer of Locust Walk Acquisition Corporation (Nasdaq: LWACU), a blank check company from October 2020 to the completion of its business combination with eFFECTOR Therapeutics, Inc. in August 2021, ProMIS Neurosciences (TSX: PMN.TO), a biotechnology company focused on the discovery and development of antibody therapeutics for neurodegenerative diseases, since March 2017, Eloxx Pharmaceuticals, Inc. (Nasdaq: ELOX), a biopharmaceutical company developing novel RNA-modulating drug candidates since November 2020, and is currently chief financial officer of or advisor to various life sciences companies including Prilenia Therapeutics Development Corp., Apic Bio Inc., Clear Creek Bio, Inc., Elicio Therapeutics Inc., Dermbiont, Inc. and Calcimedica Inc. Since 2013, he has participated in more than 14 initial public offering filings. He has assisted in raising more than $1 billion in debt and equity securities. Since 2019, Mr. Geffken has been a member of the board of directors of Windtree Therapeutics (Nasdaq: WINT), a biopharmaceutical company and, from May 2013 to October 2017, he was a member of the board of directors of Alcobra Ltd., a public biotechnology company that merged with Arcturus Therapeutics, Inc. (Nasdaq: ARCT). From November 2017 until May 2018, Mr. Geffken served on the board of directors of Arcturus. Mr. Geffken received his BS in Economics from The Wharton School, University of Pennsylvania, and an MBA from Harvard Business School.

serves as our special advisor. Mr. Margolis joined Oppenheimer & Co. Inc. in 2017 and serves as senior managing director and head of life sciences investment banking. Michael also serves as co-head of healthcare investment banking. He has over two decades of investment banking experience in the life sciences sectors. Prior to joining Oppenheimer, he served as the head of healthcare investment banking at Roth Capital Partners, LLC and as a managing director at Merriman Holdings, Inc. (also known as Merriman Curhan Ford Group Inc.) Before becoming an investment banker, Michael worked at Novartis Pharmaceuticals Corporation in several roles, including as a director in the Global Business Development and Licensing group. He also served as an equity research analyst at Ursus Capital. He began his career at Eli Lilly & Company as a senior pharmaceutical representative. Michael is a registered pharmacist and holds an MBA from New York University’s Stern School of Business and a BS from Rutgers University, College of Pharmacy.

is an executive partner at Flagship Pioneering, a firm that builds first-in-category bioplatform companies, a role he has held since January 2017. Mr. Epstein has served as chairman of Axcella Health since January 2018, chairman of Rubius Therapeutics since January 2017 and chairman of Evelo Biosciences since October 2019. He has also served as a board member at Tarus Therapeutcs since June 2020, Woosley Pharma since February 2020, Dynamics Special Purpose Corp since March 2021, Valo Health since July 2019, Three Opinions Foundation since 2018 and as chairman at South Florida’s Pelican Harbor Seabird Station since 2020. From early 2010 to mid-2016 he served as a chief executive officer of Novartis Pharmaceuticals, a division of Novartis AG. Previously, Mr. Epstein founded and led Oncology and Molecular Diagnostics units at Novartis. Under his leadership Novartis’ oncology business grew to be the second largest in the world. Mr. Epstein has over 25 years of extensive drug development, deal execution, commercialization and leadership experience on global scale. Over the course of his career, he led the development and commercialization of over 30 new molecular entities, including major breakthroughs such as Glivec, Tasigna, Gilenya, Afinitor, Cosentyx and Entresto. His teams developed three Prix Galien award winners, and he has mentored several CEOs. FierceBiotech named Mr. Epstein as one of the “25 most influential people in biopharma.” Early in his career, Mr. Epstein was an associate in strategy practice of consulting firm Booz Allen and Hamilton. Mr. Epstein holds a BS in Pharmacy from Rutgers University College of Pharmacy and an MBA in Finance and Marketing from Columbia University Graduate School of Business.

is the chairman of board of directors of Tandem Diabetes Care, Inc. (“Tandem Diabetes”), a medical device company that develops insulin pumps and other diabetes-related products, since March 2020 and was previously the executive chairman since March 2019. Mr. Blickenstaff has been a member of Tandem Diabetes’ board of directors since September 2007. From September 2007 to March 2020, Mr. Blickenstaff has also served as Tandem Diabetes’ president and chief executive officer. He also serves on the board of Nuvation Bio Inc. since August 2019. Mr. Blickenstaff served as chairman and chief executive officer of Biosite Inc., a provider of medical diagnostic products, from 1988 until its acquisition by Inverness Medical Innovations in June 2007. From 2005 to 2016, Kim served as a director of Medivation, Inc., a biotechnology company, until its acquisition by Pfizer, and as a director of DexCom Inc., a provider of continuous glucose monitoring systems, from June 2001 to September 2007. Kim was formerly a certified public accountant and has more than 20 years of experience overseeing the preparation of financial statements. He holds a BA in Political Science from Loyola University, Chicago, and an MBA from the Graduate School of Business, Loyola University, Chicago.

is vice chairman of healthcare investment banking at Oppenheimer & Co. Inc., where he utilizes his deep experience and extensive contacts across the healthcare spectrum to enhance Oppenheimer’s presence in the sector. Previously, Mr. Fassberg founded The Trout Group, an investor relations firm in the life sciences industry, where he served as chief executive officer from 1996 to 2021. Prior to founding Trout in 1996, Mr. Fassberg was a sell-side analyst at a healthcare-focused investment bank. Before his career on Wall Street, Mr. Fassberg spent four years at DuPont Pharma in various sales and marketing positions. Mr. Fassberg holds a BS in biology and chemistry from The University of North Carolina— Chapel Hill and an MBA in finance from New York University’s Stern School of Business.

is president and CEO of Tango Therapeutics, a biotechnology company she co-founded as a venture partner at Third Rock Ventures (“TRV”) and launched in 2017. Tango (Nasdaq: TNGX) merged with BCTG Acquisition Corp., a special purpose acquisition corporation in August 2021. Dr. Weber is a board-certified medical oncologist with a strong academic track record in cancer genetics and more than 15 years of experience in pharmaceutical drug discovery and development, leading the early development groups for GSK and then Novartis Oncology (development candidate selection to phase III). In her role at TRV, in addition to creating Tango, she was interim chief medical officer for the first 18 months for Neon Therapeutics and led the TRV team building Relay Therapeutics from early seed stage into public launch. Dr. Weber is a member of the board of directors of Revolution Medicines and Fog Pharma. Prior to joining TRV, she was Senior Vice President and Global Head, Oncology Translational Medicine at Novartis from 2009 to 2015 and Vice President, Oncology Discovery and Translational Medicine at GlaxoSmithKline from 2005 to 2009. Prior to joining the pharmaceutical industry, Dr. Weber was a professor of medicine and genetics at the University of Pennsylvania, leading a clinical and translational research program in cancer genetics. She is an elected member of the American Association of Physicians and the American Society for Clinical Investigation, of which she served as president in 2005 and she has served on the board of directors of both the American Society of Clinical Oncology (“ASCO”) and the American Association for Cancer Research (AACR). Dr. Weber holds a BS in Chemistry and an M.D. from the University of Washington School of Medicine and completed her residency in internal medicine at Yale University. Dr. Weber also completed a fellowship in medical oncology at the Dana-Farber Cancer Institute.