Team Photo

Petri Vainio, M.D., Ph.D.

Managing Director, London
University of Helsinki
University of Helsinki
Stanford University

Petri Vainio, M.D., Ph.D. has 25 years of experience as an investor in rapidly growing healthcare companies.  Dr. Vainio spent more than 10 years as a General Partner of Sierra Ventures, one of Silicon Valley’s leading venture capital firms with over $1 billion under management. While at Sierra, Dr. Vainio was a General Partner in five successive funds and led their healthcare investment practice.  Dr. Vainio has been a lead investor in numerous successful healthcare companies in all sectors of healthcare, including pharmaceuticals, biotechnology, medical devices and healthcare services.

He has served on the board of directors of over 20 private and public healthcare companies and has helped these companies raise over $1billion in financing and reach a combined market value of over $30 billion.  Dr. Vainio sits on the Board of Directors of Molecular Partners. 

Dr. Vainio holds a Doctor of Medicine and a Doctor of Philosophy in biochemistry from the University of Helsinki, and a Masters in Business Administration from Stanford University.  Dr. Vainio joined Essex Woodlands as Managing Director in the London office in 2004.