X0303 4 2009-09-29 1 0001368802 Atlas Energy Resources, LLC ATN 0001168756 COHEN JONATHAN Z 1845 WALNUT STREET 10TH FLOOR PHILADELPHIA PA 19103 1 1 0 0 Vice Chairman Common Units 2009-09-29 4 D 0 100000 D 0 D Unit Options (right to buy) 23.06 2009-09-29 4 D 0 200000 D 2017-01-24 Common Units 200000 0 D Represents phantom units that vest into common units of the issuer on a 1-for-1 basis 25% on January 24, 2010 and 75% on January 24, 2011. Disposed of pursuant to merger agreement between issuer and Atlas Energy, Inc. (f/k/a Atlas America, Inc.) in exchange for 116,000 phantom shares of Atlas Energy, Inc. common stock, or 1.16 shares of Atlas Energy, Inc. for each unit of the issuer. This option, which provided for vesting 25% on January 24, 2010 and 75% on January 24, 2011, was assumed by Atlas Energy, Inc. in the merger and replaced with an option to purchase 232,000 shares of Atlas Energy, Inc. for $19.88 per share. Lisa Washington, Attorney-in-Fact 2009-10-01