Mark Boshar

Venture Partner

Mark Boshar is a Venture Partner at Raven. Mark’s primary responsibility is to focus on new company creation. Prior to Raven, Mark was a member of the founding team and Chief Operating Officer at Catamaran Bio, a CAR-NK cell therapy company. Prior to Catamaran, Mark served as Vice President, Legal Affairs at Rubius Therapeutics where he was responsible for leading internal legal activities in support of Rubius’ IPO and its growth to a clinical-stage company. Before joining Rubius, Mark spent a decade launching, building, and advising a portfolio of early-stage venture-backed life-sciences companies, including Visterra, Living Proof, Kala Pharmaceuticals, and Homology Medicines. Previously in his career, Mark served as Associate General Counsel at Millennium Pharmaceuticals (now Takeda Oncology) where he built the legal department and led internal legal activities supporting several transformative pharmaceutical partnerships, a substantial global patent estate, and the company’s IPO. Mark began his professional career as a life sciences attorney with the law firm of Hale and Dorr (now WilmerHale). Mark brings to more than twenty-five years of leadership experience in the life sciences industry spanning operations, pharma partnering, licensing, and legal affairs. Mark holds a JD from Northeastern University School of Law and a BS in Biology from Tufts University.