Brazil's GPA taps Argentina boss, former Wal-Mart head to run supermarkets
January 20, 2016 at 15:44 PM EST
SAO PAULO, Jan 20 (Reuters) - GPA SA, Brazil's biggest retailer, on Wednesday named Luis Moreno as chief executive of its supermarket and convenience store division and Marcos Samaha as head of operations for the unit, according to a securities filing.