Perkins Oil & Gas Incorporated (PRKO: OTC Pink Current) | Piggyback Qualified Wed, Apr 08, 2015 12:00 - Perkins Oil & Gas Incorporated ( PRKO : OTC Pink Current) - Piggyback Qualified - Effective Wed, Apr 08, 2015, PRKO is designated with the status of piggyback qualified. Piggyback qualification allows market participants, in addition to the original 211 form filer, to quote the respective security. You may find a complete list of piggyback qualifications at otcmarkets.com .