CHICAGO, 2015-9-21 — /EPR Retail News/ — General Growth Properties, Inc. (NYSE:GGP, the “Company”) today announced that Sandeep Mathrani, Chief Executive Officer, will participate in a panel discussion titled “Transforming the Mall Experience – Insights into an Evolving Format” at the Bank of America Merrill Lynch 2015 Global Real Estate Conference in New York on Wednesday, September…