United States of America
McMullen, raised in Newark, Delaware, joined DuPont after earning his undergraduate degrees in Finance and Economics at the University of Delaware. As DuPont was the company to work for in that region, McMullen's parents were a bit shocked when he took one of the first big risks of his career — leaving the known success of DuPont, the hometown favorite, for the California-based Hewlett-Packard Co. "I've always looked for opportunities to grow, to try something that can help me make better decisions and live life more fully." His passion for business and for challenging himself led him to the University of Pennsylvania's Wharton School of Business, where he earned an M.B.A. with honors. He returned to HP in 1988 and hasn't looked back.