AdvertisementThree Crucial Years Propel Romney's Business Career Back To Center StageJuly 12, 2012Greg HendersonfacebookEmailThomas Monaghan (left), founder and chairman of Domino's Pizza, signs an agreement to sell a "significant portion" of his stake in the company to Mitt Romney's Bain Capital, in 1998. Romney, then Bain's CEO, maintains that he left the firm the following year. (AP)