Siobhan Dullea

Global / Leadership / Chief Operating Officer
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With more than 20 years of experience managing and scaling global operations, Siobhan leads MassChallenge's worldwide operations, overseeing the organization's eight accelerators worldwide, and its financial planning and talent development.

Before joining MassChallenge, Siobhan served as Chief Growth Officer for The Grommet, an online marketplace and product discovery platform, where she was responsible for the wholesale business and programs to support entrepreneur growth. She was also a founding member of C Space (formerly Communispace Corporation) where she grew the company’s workforce to nearly 500 employees and supported significant growth and expansion over her 16-year tenure. As Global Chief Client Officer, Dullea led the integration across acquired companies in the UK and China.

As a marketing and change management consultant, Siobhan has worked with many Fortune 500 companies and has mentored start-ups through MassChallenge and MIT Venture Mentoring Service.

Siobhan has dual degrees in political science and business from Boston University.


MassChallenge strengthens the global innovation ecosystem by accelerating high-potential startups across all industries, from anywhere in the world.