| Mayer Minnie H. B #10342-435-35111 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,250 | May 18, 2010 | — | — |
| Canyon Ranch 106 #11E42-137-32079 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,954 | May 14, 2010 | — | — |
| Mayer Ranch 36 #342-435-38753 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,509 | May 13, 2010 | — | — |
| Wilson Duke #177942-435-39293 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,300 | May 13, 2010 | — | — |
| Wilson Duke #161842-435-39292 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,000 | May 12, 2010 | — | — |
| Hampton Gas Unit #5HHZ42-497-37053 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 7,732 | May 10, 2010 | — | — |
| Mayer Ranch 41 #542-435-39289 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,698 | May 5, 2010 | — | — |
| Marigliano #160242-413-32653 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,700 | Apr 30, 2010 | — | — |
| Epps H. C. 38 #1442-435-39287 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,005 | Apr 27, 2010 | — | — |
| Epps H. C. 38 #1542-435-39288 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,312 | Apr 27, 2010 | — | — |
| Dobbins #11HHZ42-497-37048 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 7,857 | Apr 27, 2010 | — | — |
| Dobbins #10HHZ42-497-37049 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 7,896 | Apr 27, 2010 | — | — |
| Epps H. C. #39 #1542-435-39284 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,900 | Apr 26, 2010 | — | — |
| Mayer Ranch 41 #842-435-39286 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,652 | Apr 26, 2010 | — | — |
| Ward R.C. #342-435-34198 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,240 | Apr 23, 2010 | — | — |
| Diebitsch 70 #1942-435-39282 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,100 | Apr 23, 2010 | — | — |
| Epps H. C. 38 #1342-435-39285 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,803 | Apr 23, 2010 | — | — |
| Ward J.W. 118 #1442-435-36750 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,556 | Apr 21, 2010 | — | — |
| Cusenbary W R 39 #842-435-39283 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,026 | Apr 21, 2010 | — | — |
| Loe #610242-413-32649 | Upp Operating LLC | Schleicher, TXKama (Strawn) | ActiveGas | 8,390 | Apr 20, 2010 | — | — |
| Mayer Edwin S. Jr. P #1642-413-32650 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | Temporarily abandonedGas | 8,800 | Apr 20, 2010 | — | — |
| Marigliano #240242-413-32648 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,572 | Apr 19, 2010 | — | — |
| Perr a Unit #1HHZ42-439-35022 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,378 | Apr 19, 2010 | — | — |
| Perr a Unit #2HHZ42-439-35023 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,403 | Apr 19, 2010 | — | — |
| Perr a Unit #3HHZ42-439-35024 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,402 | Apr 19, 2010 | — | — |
| Perr a Unit #4HHZ42-439-35025 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,356 | Apr 19, 2010 | — | — |
| Perr B Unit #5HHZ42-439-35026 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,404 | Apr 19, 2010 | — | — |
| Mayer Edwin S. Jr. 27 #342-413-32646 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,594 | Apr 16, 2010 | — | — |
| Diebitsch 70 #1842-435-39279 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,164 | Apr 16, 2010 | — | — |
| Rolling Hills B Unit #4HHZ42-439-35019 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,476 | Apr 16, 2010 | — | — |
| Rolling Hills B Unit #5HHZ42-439-35020 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,492 | Apr 16, 2010 | — | — |
| Rolling Hills B Unit #6HHZ42-439-35021 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,486 | Apr 16, 2010 | — | — |
| Rousselot Doris Mayer a #1842-413-32645 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,117 | Apr 15, 2010 | — | — |
| Shannon 52 #2442-435-39278 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,150 | Apr 14, 2010 | — | — |
| Jeffers AR #1142-413-32643 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,302 | Apr 9, 2010 | — | — |
| Mayer Edwin S. Jr. B 38 #942-435-39276 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,800 | Apr 9, 2010 | — | — |
| Shannon 52 #2542-435-39277 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,200 | Apr 9, 2010 | — | — |
| Marigliano #250142-413-32642 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,698 | Apr 8, 2010 | — | — |
| Randee Fawcett Trust #2242-435-39275 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,900 | Apr 8, 2010 | — | — |
| Powell 13 #142-413-32641 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,608 | Apr 2, 2010 | — | — |
| Hill-Rousselot B #442-413-32639 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,812 | Mar 31, 2010 | — | — |
| Hill-Rousselot E #342-413-32640 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,716 | Mar 31, 2010 | — | — |
| Hill-Rousselot E #242-413-32638 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,511 | Mar 30, 2010 | — | — |
| Cusenbary 58 #1242-435-39272 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,002 | Mar 25, 2010 | — | — |
| Mayer Edwin S. Jr. #130342-435-37618 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,022 | Mar 24, 2010 | — | — |
| Nicks Gerald 5 #1342-435-39271 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,668 | Mar 24, 2010 | — | — |
| Canyon Ranch 112 #17E42-137-32075 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,500 | Mar 23, 2010 | — | — |
| Canyon Ranch 106 #10E42-137-32076 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,733 | Mar 23, 2010 | — | — |
| Phillips 3 #342-137-32074 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 4,405 | Mar 19, 2010 | — | — |
| Phillips 7 #442-137-32072 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 5,220 | Mar 18, 2010 | — | — |