John Piret started out in the oil & gas industry after completing his doctorate at University of Paris Mines-ParisTech. He went on to serve a vice president of technology for two technology start-ups in Houston, Texas.

After his time in Texas, Piret returned to school to expand his business acumen, receiving a Master of Science in Management of Technology from MIT's Sloan School of Business. After MIT, he founded Corion Technologies Inc., which was a company that developed instruments for the chemical process industry. Piret sold Corion and became a partner in a boutique investment bank for the technology industries.

Piret spent 25 years doing M&A, financing transactions, and providing fairness opinions. He performed transactions in a broad range of industries, including software, electronics, biotechnology, medical devices, cleantech, and energy. He is a Certified Valuations Analyst, specializing in valuations of early-stage companies and intangible assets/IP.

Piret has been involved in entrepreneurship for many years as a mentor, director, and advisor for a number of startups. He mentored a large number of startups through organizations such as MIT’s Venture Mentoring Service, MassChallenge, Greentown Labs, and the Cleantech Open. In addition to his roles as director and advisor, Piret has been an angel investor to a number of startups.

Currently, Piret serves as a director of Hyannis Port Research, Inc., and of the European American Chamber of Commerce – France. He is a judge for HBS’s New Venture Competition and for MassChallenge and serves as an advisor to a student-run impact fund at MIT’s Sloan School.


  • ScD Physical Sciences, University of Paris Mines ParisTech
  • MS Management of Technology, Massachusetts Institute of Technology
  • MS Chemical Engineering, Massachusetts Institute of Technology
  • BA Applied Mathematics, Harvard University