CHICAGO, IL, 2017-Sep-20 — /EPR Retail News/ — Independent Grocers Alliance (IGA) announced today (September 18, 2017) that John Ross, current President of Inmar Promotion Network, has been named President and CEO of IGA Inc., succeeding current IGA Chairman, President and CEO Mark Batenic. Ross will begin his tenure as CEO mid-October of 2017, working closely…