Fri, May 17, 2013 12:00 - Xtreme Oil & Gas, Inc. (XTOG: OTC Link/FINRA BB) - Tier Change - The symbol, XTOG, no longer is classified as OTC Pink Limited. As of Fri, May 17, 2013, XTOG resides in the OTCQB tier. You may find a complete list of tier changes at otcmarkets.com.