John is Director of the Entrepreneurs in Residence Program at Saïd Business School of Oxford University. John is a leading expert in the fields of employee ownership, impact investing, and entrepreneurship, and his achievements in both the academic and business worlds are extensive. ​ After finishing his Ph.D. at Stanford University, he worked as a consultant at Bain & Company.

He went on to become the founder and CEO of his own investment firm which he sold to American Capital, which then went public. John left American Capital as Senior Investment Officer when the company reached $1 billion in assets. Throughout his for-profit and non-profit career, John has helped to start and grow 35 companies, in addition to the hundreds of firms he has either financed or advised.