Sarah Larson

Partner/Chief Human Resources Officer

Sarah Larson joined Third Rock in 2017, bringing over 20 years of experience in human resources and leadership development, as well as the building of strong corporate cultures. Sarah is responsible for human resources at the firm and also provides guidance and counsel to the firm’s portfolio companies as they are building their organizational capabilities, focusing on areas of human capital, leadership development, and culture creation. Previously, Sarah served as senior vice president, human resources at Foundation Medicine. Prior to that, Sarah led the global human resources function at CombinatoRx (acquired by Horizon Discovery Group) and worked for several years as a recruiter and account manager at Cambridge Search, a search firm specializing in recruitment within the life sciences industry. Sarah holds a BA in Communications from Rivier College.

Sarah has a passion for refurbishing and rebuilding homes. On any weekend, you might find her ripping down walls or on scaffolding putting up siding. One of her most prized possessions is her tape measure, with fractions.

Administrative Support

Laura Vitale
Administrative Assistant
lvitale@thirdrockventures.com
(617) 585-2022

Associated Portfolio Companies

Partners

Alexis Borisy

Partner

Abbie Celniker, Ph.D.

Partner

Neil Exter

Partner

Kevin Gillis

Partner/Chief Financial Officer

Charles Homcy, M.D.

Partner

Sarah Larson

Partner/Chief Human Resources Officer

Mark Levin

Partner

Craig Muir

Partner/Chief Technology Officer

Cary Pfeffer, M.D.

Partner

Kevin Starr

Partner

Robert Tepper, M.D.

Partner

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

Jeffrey Tong, Ph.D.

Venture Partner

Barbara Weber, M.D.

Venture Partner

Entrepreneurs-In-Residence

Jason Coloma, Ph.D.

Entrepreneur-in-Residence

Keith Dionne, Ph.D.

Entrepreneur-in-Residence

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

Entrepreneur-in-Residence

Brian Jones, Ph.D.

Entrepreneur-in-Residence

Robert Kamen, Ph.D.

Entrepreneur-in-Residence

Leon Murphy, Ph.D.

Entrepreneur-in-Residence

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

Entrepreneur-in-Residence

Laurence Turka, M.D.

Entrepreneur-in-Residence

Domain Experts

Karina Chmielewski

Senior Director, Platform Operations

Dina Ciarimboli

General Counsel

Cynthia Clayton

Head of Communications

John Keilty

General Manager, Platform Operations

Principals and Associates

Brian Albrecht, Ph.D.

Principal

Tim Funnell, DPhil.

Principal

Melissa McCracken, Ph.D.

Associate

Travis Murdoch, M.D.

Principal

Vyas Ramanan, Ph.D.

Associate

Dominique Verhelle, Ph.D., M.B.A.

Principal

Recruiting

Andrea DiMella

Recruiting Director

Tracy Nicholson

Recruiting Director

Chris Robinson

Vice President, Recruiting

Administrative

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 Vitale

Administrative Assistant

Maribel Laboy

Executive Assistant

Ian Miller

Administrative Assistant

Corey O’Keeffe

Event Planner & Communications

Angelo Severino

Executive Assistant

Tracy Williams

Executive Assistant

At Third Rock, people are our most valuable asset

Check our Careers page to learn about career opportunities within the Third Rock portfolio

Third Rock Careers