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Barbara Fox
CEO at Rheos Medicines


As CEO, Barbara Fox brings more than 25 years of biopharmaceutical leadership expertise to Rheos Medicines. She joins the company from Tilos Therapeutics, a biotech company developing antibody-based therapies for oncology and immune-mediated diseases. Barbara served as Chief Executive Officer at Tilos and led the successful acquisition of the company by Merck in June of 2019.  Previous positions include Entrepreneur-in-Residence at Partners Innovation Fund, Founder and Chief Executive Officer of Avaxia Biologics, Founder and Chief Scientific Officer of Recovery Pharmaceuticals, and VP, Discovery and Immunology at ImmuLogic Pharmaceutical Corp.

Earlier in her career, Barbara was an Associate Professor of Rheumatology at the University of Maryland School of Medicine.  She received her A.B. in Chemistry from Bryn Mawr College, her Ph.D. in Chemistry from the Massachusetts Institute of Technology and trained as a post-doc in Cellular Immunology at the National Institutes of Health.

Agenda Sessions

  • Diversity & Inclusion: Cultivating the Next Generation of Biotech Execs