Iridium Communications (NASDAQ: IRDMU ) climbed 27.22% to $10.75 at 9:45 am. Iridium Communications' CEO Matthew J. Desch will speak at the UBS 40th Annual Global Media & Communications Conference in New York City on December 5, 2012. Green Mountain Coffee Roasters (NASDAQ: GMCR ) surged 22.88% to $35.58.