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Craig Williams

Operating Partner

Craig Williams joined Flagship Pioneering in 2023 as an Operating Partner helping drive value creation, scientific progress, strategy, and execution for ProtoCos and NewCos.

Prior to Flagship, Craig spent more than two decades at GSK and ViiV Healthcare. During his time at GSK, Craig was charged with developing business strategies, managing operations and driving sales for vaccines and therapeutics globally, helping to launch over 15 vaccines and medicines around the world. He took on roles of increasing scope and complexity, including US Vaccines sales and marketing leadership roles, overseeing commercialization of vaccines and medicines in Africa and Southeast Asia, heading the company’s UK Respiratory business unit, and culminating in his most recent position as Global Vaccines Commercialization Lead where he led a cross-functional team responsible for the development and launch of vaccines across the company’s portfolio. Craig has also served as Head of ViiV International, in which he oversaw ViiV’s HIV business in nearly 150 countries.

Craig received both an MBA and B.A. from Florida A&M University School of Business & Industry.