0000950123-11-019832 15-12B 1 20110228 20110228 20110228 ARKHAN Corp 0001279228 4922 510404430 DE 1231 15-12B 34 001-32169 11646932 WESTPOINTE CORPORATE CENTER ONE 1550 CORAOPOLIS HEIGHTS RD. 2ND. FLOOR MOONTOWNSHIP PA 15108 412-262-2830 WESTPOINTE CORPORATE CENTER ONE 1550 CORAOPOLIS HEIGHTS RD. 2ND. FLOOR MOONTOWNSHIP PA 15108 ATLAS ENERGY, INC. 20090929 ATLAS AMERICA INC 20040209 15-12B 1 f58502e15v12b.htm FORM 15-12B