X0303 4 2009-09-29 1 0001368802 Atlas Energy Resources, LLC ATN 0001382010 Weber Richard WESTPOINT CORPORATE CENTER ONE 1550 CORAOPOLIS HEIGHTS RD. 2ND FLOOR MOON TOWNSHIP PA 15108 1 1 0 0 President & COO Common Units 2009-09-29 4 D 0 48719 D 0 D Unit Options (right to buy) 21.00 2009-09-29 4 D 0 373752 D 2016-12-18 Common Units 373752 0 D 11,906 of these units vest on April 17, 2010. Disposed of pursuant to merger agreement between issuer and Atlas Energy, Inc. (f/k/a Atlas America, Inc.) in exchange for (a) 56,514 shares of Atlas Energy, Inc. common stock, or 1.16 shares of Atlas Energy, Inc. for each unit of the issuer, and (b) $24.52 in cash, representing the cash value of the as-converted fractional shares. This option, which provided for vesting in four equal installments beginning on April 17, 2006, was assumed by Atlas Energy, Inc. in the merger and replaced with an option to purchase 433,552 shares of Atlas Energy, Inc. for $18.11 per share. Lisa Washington, Attorney-in-Fact 2009-10-01