0000806260-10-000011 SC 13G/A 1 20100211 20100211 ATLAS ENERGY, INC. 0001279228 4922 510404430 DE 1231 SC 13G/A 34 005-80454 10590099 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 AMERICA INC 20040209 MUNDER CAPITAL MANAGEMENT 0000806260 383212521 MI 1231 SC 13G/A 480 PIERCE ST BIRMINGHAM MI 48009 2486479200 480 PIERCE STREET BIRMINGHAM MI 48009 SC 13G/A 1 atlasenergyinc-a.txt ATLAS AMERICA 13GA MUNDER FILING