Dr. Petri Vainio


Member of the Board of Directors

Petri Vainio, MD, PhD. 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. Dr. Vainio has served on the board of directors of over 20 private and public healthcare companies and has helped these companies raise over USD 1 billion in private financings and create a combined enterprise value of over USD 60 billion. Petri Vainio joined Essex Woodlands as Managing Director and opened their London office in 2004. In the past he sat on boards including those of Intuitive Surgical, and Theravance. He serves currently on the board of directors of EUSA Pharma (UK) Ltd. Prior to joining Essex Woodlands, Petri Vainio spent more than 10 years as a General Partner of Sierra Ventures, one of Silicon Valley’s leading venture capital firms with over USD 1 billion under management. While at Sierra, he was a General Partner of five successive funds and led their healthcare investment practice. Petri Vainio holds a Doctor of Medicine and a Doctor of Philosophy degree in Biochemistry from the University of Helsinki and a Master in Business Administration degree from Stanford University.