X0206 3 2013-08-09 0 0001362705 Constellation Energy Partners LLC CEP 0001416027 Sanchez Energy Partners I LP 1111 BAGBY STREET, SUITE 1800 HOUSTON TX 77002 0 0 1 0 0001060529 SANCHEZ ANTONIO R JR 1111 BAGBY STREET, SUITE 1800 HOUSTON TX 77002 0 0 1 0 0001536994 Sanchez Oil & Gas Corp 1111 BAGBY STREET, SUITE 1800 HOUSTON TX 77002 0 0 1 0 0001536993 SEP Management I, LLC 1111 BAGBY STREET, SUITE 1800 HOUSTON TX 77002 0 0 1 0 Common Units 4724407 D Class A Units 1130512 D Class Z Unit 1 D Sanchez Energy Partners I, LP directly owns 4,724,407 Common Units, 1,130,512 Class A Units and 1 Class Z Unit. Sanchez Energy Partners I, LP is controlled by its general partner, SEP Management I, LLC, which is a wholly owned subsidiary of Sanchez Oil & Gas Corporation. Sanchez Oil & Gas Corporation is managed by A.R. Sanchez, Jr. and Antonio R. Sanchez, III. A.R. Sanchez, Jr. shares voting and dispositive power over the shares controlled by Sanchez Energy Partners I, LP. Each of A.R. Sanchez, Jr., Sanchez Oil & Gas Corporation and SEP Management I, LLC disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership by A.R. Sanchez, Jr., Sanchez Oil & Gas Corporation or SEP Management I, LLC of all of the reported securities for purposes of Section 16 or any other purpose. Signed in the following capacities: A.R. Sanchez, Jr. is signing for himself, as well as in his capacity as Chairman of the Board of Directors of Sanchez Oil & Gas Corporation, on behalf of Sanchez Oil & Gas Corporation and in its capacity as the sole member of SEP Management I, LLC, on behalf of SEP Management I, LLC and in its capacity as the general partner of Sanchez Energy Partners I, LP, on behalf of Sanchez Energy Partners I, LP. /s/ A.R. Sanchez, Jr. (See Remarks) 2013-08-19