Cary Pfeffer, M.D.

Cary Pfeffer, M.D.

Cary Pfeffer joined Third Rock Ventures at its inception in 2007 and has more than 20 years of business development and transaction experience, along with a broad array of biotech product development experience.

Cary leads Third Rock’s partner development efforts, including building and maintaining strong relationships to work with large biotech and pharmaceutical companies. He has played an instrumental role in a number of innovative alliances and collaborative company building efforts across the portfolio, including an industry-leading global strategic collaboration between Agios and Celgene in the field of cancer metabolism. Cary supports and advises on business development efforts across the Third Rock portfolio and has assumed active leadership roles in its portfolio companies, functioning as chief executive officer and chief business officer through the first 12-18 months after launch. Companies he has led and advised include:

  • Board member and interim chief business officer of Rheos Medicines
  • Interim chief business officer and director of Tango Therapeutics
  • Board member of Ablexis
  • Former board member of Edimer
  • Chairman of the board and former interim chief executive officer of Neon Therapeutics
  • Former chairman of the board of directors and former interim chief executive officer of Jounce Therapeutics
  • Former board member and interim chief business officer of Eleven Biotherapeutics
  • Former board member of Taris Biomedical

Before joining Third Rock, Cary founded The Pfeffer Group, a boutique consulting firm that provided business development and strategy advisory services, completing multiple transactions for leading biotechnology and life sciences companies. Prior to that, Cary spent more than a decade at Biogen, where he held a variety of senior and executive level U.S. and global management roles focused on business and market development, product development and commercial operations. Earlier in his career, Cary spent several years in corporate finance in the Health Care Investment Banking Group of Lehman Brothers.

Cary earned his M.D. from the University of Pennsylvania, his MBA from the Wharton School of the University of Pennsylvania and holds a B.A. in biochemistry from Columbia University. Cary learned to play ping pong from his dad at age 8 and played and won multiple competitive camp tournaments in his teens.