The Corporation’s common stock is traded in the over-the-counter market. The common stock has been quoted on the OTCQX tier of the OTC Markets Group, Inc.’s electronic quotation system (www.otcmarkets.com) under the symbol “ISBA” since August of 2014. From August 2008 to August 2014, the stock traded under the symbol “ISBA” on the OTCQB tier of the OTC Markets Group, Inc. and prior to August 2008, the stock traded under the symbol “IBTM.” Other trades in the common stock occur in privately negotiated transactions from time to time of which the Corporation may have little or no information.