Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities Common Stock Market Prices Our common stock is listed on the NASDAQ Global Select Market (the “NASDAQ”) under the symbol “ISTR.” As of February 16, 2016, there were approximately 789 holders of record of our common stock, and the closing sales price of our common stock on that date was $14.55.