Seven & i Holdings Co. said Thursday it has appointed outside director Stephen Dacus as CEO, as it seeks to maximize its corporate value through a massive share buyback and restructuring under the new leadership, to fend off a takeover bid by a Canadian rival.Dacus, a former CEO of the operator of rival retailer Seiyu Co. which was part of U.S. retail giant Walmart Inc., will replace Ryuichi Isaka to become the first non-Japanese CEO of Seven & i, subject to approval at its general shareholders' meeting on May 27.Isaka will become a senior advisor at Seven & i, which runs the 7-Eleven conve…READ FULL ARTICLE