MONTREAL & DENVER--(BUSINESS WIRE)--In a planned transition consistent with the company's by-laws, Molson Coors Brewing Company (NYSE: TAP; TSX: TPX) today announced that Geoff Molson, a member of the Molson Coors Board of Directors, will assume the role of chairman, and Pete Coors, current chairman, will assume the role of vice chairman, effective June 3, 2015. The by-laws provide for the chairman and vice chairman to alternate between the Molson and Coors families on a rotating two-year term.