Dr. Ragan is the Chief Executive Officer and President of X4. She has more than 15 years of experience building companies in the biotechnology industry. Most recently, Dr. Ragan consulted as Chief Business Officer at Lysosomal Therapeutics Inc. (LTI), an Atlas Venture portfolio company, where she led the company’s business development activities. Prior to LTI, Dr. Ragan held leadership roles in corporate development and operations at Genzyme/Sanofi where she led strategic partnering efforts for Genzyme’s Rare Disease business and headed the supply chain planning for Genzyme’s flagship commercial products. Other professional roles include business roles at Hydra Biosciences, Oscient Corporation and Celera Corporation. Dr. Ragan received her PhD from MIT and completed post-doctoral studies at Harvard Medical School.