Engineering Medicines To Improve Patient Care About Us Jonathan Violin, Ph.D. President, Chief Executive Officer and Co-Founder Jonathan co-founded privately-held Viridian Therapeutics in 2020 and currently serves as president, CEO and member of the board. Previously, Jonathan served as founding CEO of Quellis Biosciences, Inc. which was acquired by Astria Therapeutics (formerly Catabasis Pharmaceuticals), and Dianthus Therapeutics, Inc., and continues to serve on the boards of directors of both organizations. He also co-founded and helped lead Trevena, Inc., holding a variety of R&D and corporate roles over 10 years. Jonathan holds a Ph.D. from the Department of Pharmacology at the University of California, San Diego, an M.B.A. with a concentration in Health Sector Management from the Fuqua School of Business, and a B.S. in Chemical Pharmacology from Duke University.