David Green is the founder of Biostage. He holds a BA (honors) degree in physics from Oxford University and an MBA (with distinction) from Harvard Business School. He has worked as a brand manager for Unilever and as a strategy consultant for Monitor (now Deloitte) before co-founding Harvard Bioscience in 1996. He took HBIO public in 2000. In 2008 he founded Biostage (then called Harvard Apparatus Regenerative Technology) as a subsidiary of HBIO. He led the spinoff of Biostage from HBIO in 2013. In 2015, after a near-fatal road accident, he resigned from Biostage. He then founded Zero Carbon LLC a business that helps homeowners cut their carbon emission profitably. He is the author of three books on how cut carbon emission profitably. He has over 15 years of experience as either president or CEO of public companies. He was rehired by Biostage in November 2021. He has also been President and Director of the Harvard Business School Health Industry Alumni Association.