Philip Reilly, M.D., J.D.

Venture Partner

Phil Reilly joined Third Rock Ventures in 2008 to discover, launch and build companies pursuing breakthrough treatments for rare genetic diseases. He is a highly respected clinical geneticist with an extensive track record of launching and building companies in the rare disease space. He has played integral roles in several of our portfolio companies:

  • Interim chief medical officer at Goldfinch Bio
  • Co-founder at Fulcrum Therapeutics
  • Co-founder and former interim CMO of Voyager Therapeutics
  • Scientific advisory board member and former interim CMO of bluebird bio
  • Co-founder and former board member of Edimer
  • Co-founder and former board member of Lotus Tissue Repair (sold to Shire)

In addition to his role at Third Rock, Phil is a trustee emeritus of Cornell University, is an Overseer of Weill Cornell Medical College, and serves on the Advisory Board to the Boston University School of Public Health. Prior to joining Third Rock, he was the chief executive officer and chairman of Interleukin Genetics, and before that, he was the executive director of the Eunice Kennedy Shriver Center for Mental Retardation. He served twice (2000 and 2003) as president of the American Society of Law, Medicine and Ethics. He is a founding fellow of the American College of Medical Genetics. He has authored or co-authored more than 100 articles in scholarly journals and has published seven books including most recently Orphan: The Quest to Save Children with Rare Genetic Disorders. Phil has held teaching positions at Tufts University School of Medicine and Harvard Medical School. He received his B.A. from Cornell University and holds an M.D. from Yale University, a J.D. from Columbia University, is a member of the Massachusetts Bar and is board certified in internal medicine and clinical genetics.

When he was much younger, Phil spent a year bartending in the Caribbean and is reported to make one of the best gin and tonics.


Administrative Support

Maribel Laboy
Executive Assistant
(617) 585-2079

Associated Portfolio Companies


Alexis Borisy


Abbie Celniker, Ph.D.


Neil Exter


Kevin Gillis

Partner/Chief Financial Officer

Charles Homcy, M.D.


Sarah Larson

Partner/Chief Human Resources Officer

Mark Levin


Craig Muir

Partner/Chief Technology Officer

Cary Pfeffer, M.D.


Kevin Starr


Robert Tepper, M.D.


Venture Partners

Frank T. Gentile, Ph.D.

Venture Partner

Mark A. Goldsmith, M.D., Ph.D.

Venture Partner

Perry Karsen

Venture Partner

Christoph Lengauer, Ph.D.

Venture Partner

Philip Reilly, M.D., J.D.

Venture Partner

Stephen Sherwin, M.D.

Venture Partner

Barbara Weber, M.D.

Venture Partner


Keith Dionne


Jeffrey Finer, M.D., Ph.D.


Robert Kamen, Ph.D.


Glenn Pierce, M.D., Ph.D.


Jeffrey Tong, Ph.D.


Laurence Turka, M.D.


Domain Experts

Brian Albrecht, Ph.D.


Dina Ciarimboli

General Counsel

Cynthia Clayton

Head of Communications

Tim Funnell, DPhil.


John Keilty

General Manager, Platform Operations


Andrea DiMella

Recruiting Director

Tracy Nicholson

Recruiting Director

Chris Robinson

Vice President, Recruiting


Chelsea Place Johnson, Ph.D.

Senior Associate

Vyas Ramanan, Ph.D.



Zoe Angell

Executive Assistant

Megan Graziano

Manager of Operations and Administration

Linda Heath

Executive Assistant

Marcia Hemphill

Office Manager - West Coast and Executive Assistant

Rhea Kappa

Receptionist/Administrative Assistant

Laura Klein

Administrative Assistant

Maribel Laboy

Executive Assistant

Ian Miller

Administrative Assistant

Corey O’Keeffe

Event Planner & Communications

Tracy Williams

Executive Assistant

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