Jack Milwid


Jack joined Flagship Pioneering in 2015 as a senior associate. At Flagship, Jack works on creating companies that leverage breakthrough areas of science and technology to impact human health.

Jack is a serial entrepreneur, and before joining Flagship, he led the internal effort at Third Rock Ventures to create and launch the cancer immunotherapy company Neon Therapeutics. He spent two years at Third Rock assembling a team of some of the world’s leading experts in immuno-oncology, and developing the business plan for a product engine around the area of neoantigen biology. The project culminated in a $55 million Series A investment to support the company’s launch and progress to early initiation of clinical trials for its lead program, NEO-PV-01.

Prior to Third Rock, Jack co-founded three companies while a graduate student in the lab of Martin Yarmush at the Massachusetts General Hospital, and a post-doctoral fellow in the labs of Biju Parekkadan at MGH, and Michael Cima at MIT. He co-authored grants to raise more than $3 million in non-dilutive financing to support the efforts.

Jack has a Ph.D. in biomedical engineering from the Harvard-MIT Division of Health Sciences and Technology, an M.S. in materials science and engineering from MIT, and a B.S. in metallurgical and materials engineering from the Colorado School of Mines. In his free time, Jack and his wife run a small product design company, Infinite Series, that specializes in handmade goods.

Jack Milwid