As a catalyst for change, Mark is responsible for accelerating the transformation of Sears Holdings as the leader in integrated retail. Mark has worked with such organizations as IBM, Manpower, the Economist, and the U.S. Department of Education to develop social strategies that improve engagement, innovation, and loyalty. Mark was previously the CEO of Truman Company, the COO of TomorrowLab at McKinsey & Company, and a researcher at the MIT Artificial Intelligence Lab. Mark holds a Ph.D. from Harvard University. His thesis predicted the rise of social networking eight years before the founding of Facebook.