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

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

Petri Vainio, M.D., Ph.D. has spent his entire career as an investor and board member in rapidly growing healthcare companies. He has been a lead investor in numerous successful healthcare companies in all sectors, including pharmaceuticals, biotechnology, medical devices and healthcare services. Petri has served on the board of directors of over 20 private and public healthcare companies and has helped these companies raise over $1 billion in private financings and create a combined enterprise value of over $30 billion.

Petri joined Essex Woodlands as Managing Director and opened our London office in 2004. He serves currently on the Board of Directors of EW portfolio company Molecular Partners.

Prior to joining Essex Woodlands, Petri 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, he was a General Partner in five successive funds and led their healthcare investment practice.

Petri holds a Doctor of Medicine and a Doctor of Philosophy degree in Biochemistry from the University of Helsinki, and a Masters in Business Administration degree from Stanford University. He is a keen golfer, a collector of contemporary art, and a supporter of the Royal Institute of International Affairs known as Chatham House.