Professor Grennan holds a PhD in Strategy/Economics from the New York University, Stern School of Business. As an Assistant Professor in the Strategic Management area at the University of Toronto’s Rotman School of Management, Professor Grennan taught entrepreneurship in the Commerce program and statistical modeling/methods in the PhD program. He has also taught MBA health care economics at the Indian School of Business. Most of the time, though, he can be found doing research in competitive strategy and industrial organization economics, where he is especially interested in healthcare, business-to-business markets, and innovation. His research has been published in leading journals such as the American Economic Review and Management Science. He is a member of the Academy of Management, American Economics Association, and Strategy Research Forum.