| 656669 | Mar 13, 2008 | Mar 13, 2008 | EOG Resources, Inc. | Benavides FMT #12HH | 12,000 | 47940134 |
| 656629 | Mar 13, 2008 | Mar 13, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #299 | 9,940 | 47940133 |
| 656519 | Mar 13, 2008 | Mar 13, 2008 | St. Mary Land & Exploration Co. | Gates 05S #603 | 7,000 | 47940129 |
| 656547 | Mar 12, 2008 | Mar 12, 2008 | St. Mary Land & Exploration Co. | Briscoe "C" #1134 | 5,525 | 47940131 |
| 656690 | Mar 7, 2008 | Mar 7, 2008 | Virtex Operating Company, Inc. | Fasken L. & M. St of TX #6002 | 7,200 | 47940132 |
| 656294 | Mar 7, 2008 | Mar 7, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #127 | 8,740 | 47936085 |
| 656268 | Mar 7, 2008 | Mar 7, 2008 | St. Mary Land & Exploration Co. | Petty Ranch #1005 | 5,826 | 47938871 |
| 655734 | Mar 7, 2008 | Mar 7, 2008 | St. Mary Land & Exploration Co. | Petty Ranch #7034 | 5,816 | 47937108 |
| 656045 | Mar 6, 2008 | Mar 6, 2008 | Legend Natural Gas III, LP | Galvan Ranch L11 #1 | 8,000 | 47940128 |
| 656042 | Mar 6, 2008 | Mar 6, 2008 | Legend Natural Gas III, LP | Galvan Ranch J10 #1 | 8,000 | 47940127 |
| 656038 | Mar 6, 2008 | Mar 6, 2008 | Legend Natural Gas III, LP | Galvan Ranch L4 #1 | 8,000 | 47940126 |
| 656046 | Mar 5, 2008 | Mar 5, 2008 | Legend Natural Gas III, LP | Galvan Ranch P17 #1 | 8,000 | 47940124 |
| 656044 | Mar 5, 2008 | Mar 5, 2008 | Legend Natural Gas III, LP | Galvan Ranch J3 #1 | 8,000 | 47940123 |
| 656030 | Mar 5, 2008 | Mar 5, 2008 | Legend Natural Gas III, LP | Galvan Ranch L3 #1 | 8,000 | 47940121 |
| 656026 | Mar 5, 2008 | Mar 5, 2008 | Legend Natural Gas III, LP | Galvan Ranch L2 #1 | 8,000 | 47940120 |
| 656023 | Mar 5, 2008 | Mar 5, 2008 | Legend Natural Gas III, LP | Galvan Ranch L1 #1 | 8,000 | 47940119 |
| 656019 | Mar 5, 2008 | Mar 5, 2008 | Legend Natural Gas III, LP | Galvan Ranch L9 #1 | 8,000 | 47940122 |
| 656017 | Mar 4, 2008 | Mar 4, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #20 | 7,150 | 47935027 |
| 655890 | Mar 3, 2008 | Mar 3, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #298 | 9,550 | 47940118 |
| 656257 | Feb 28, 2008 | Feb 28, 2008 | Flatirons Resources LLC | Gonzalez, Ruben R. No. 309 #1 | 12,650 | 47940125 |
| 655651 | Feb 27, 2008 | Feb 27, 2008 | Lewis Petro Properties, Inc. | Owen 4 #4 | 7,600 | 47940116 |
| 655650 | Feb 27, 2008 | Feb 27, 2008 | Lewis Petro Properties, Inc. | Owen 3 #5 | 7,600 | 47940117 |
| 655650Amendment | Feb 27, 2008 | Feb 27, 2008 | Lewis Petro Properties, Inc. | Owen 3 #5 | 7,600 | 47940117 |
| 655519 | Feb 25, 2008 | Feb 25, 2008 | Lewis Petro Properties, Inc. | Owen #6 | 8,000 | 47940115 |
| 655383 | Feb 25, 2008 | Feb 25, 2008 | Devon Energy Production Co, L.P. | Vaquillas #2 | 11,500 | 47940113 |
| 655299 | Feb 22, 2008 | Feb 22, 2008 | Lewis Petro Properties, Inc. | Laurel 1390 #11A | 7,200 | 47940112 |
| 655259 | Feb 22, 2008 | Feb 22, 2008 | EOG Resources, Inc. | Staggs #11HH | 13,000 | 47940111 |
| 655259Amendment | Feb 22, 2008 | Feb 22, 2008 | EOG Resources, Inc. | Staggs #11HH | 13,000 | 47940111 |
| 655192 | Feb 22, 2008 | Feb 22, 2008 | EOG Resources, Inc. | Slator Ranch #E 3S | 8,900 | 47940114 |
| 655188 | Feb 21, 2008 | Feb 21, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1010 | 6,500 | 47940110 |
| 655149 | Feb 21, 2008 | Feb 21, 2008 | Killam Oil Co., Ltd. | K&H Fee 942 #6 | 11,000 | 47940109 |
| 655126 | Feb 21, 2008 | Feb 21, 2008 | EOG Resources, Inc. | North Marshall St Wells Fargo GU #5HH | 13,000 | 47940108 |
| 654984 | Feb 20, 2008 | Feb 20, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #297 | 9,250 | 47940106 |
| 654902 | Feb 19, 2008 | Feb 19, 2008 | Lewis Petro Properties, Inc. | Gates "N" TR5 #6 | 7,200 | 47940105 |
| 650483 | Feb 19, 2008 | Feb 19, 2008 | Dakota Oil Company | Laurel #2A | 9,916 | 47936359 |
| 654801 | Feb 14, 2008 | Feb 14, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1009 | 6,250 | 47940104 |
| 655279 | Feb 13, 2008 | Feb 13, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #294R | 9,000 | 47940107 |
| 654529 | Feb 11, 2008 | Feb 11, 2008 | Conocophillips Company | BMT 471 #1 | 10,200 | 47940103 |
| 654435 | Feb 9, 2008 | Feb 9, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1085 | 6,000 | 47940101 |
| 654428 | Feb 9, 2008 | Feb 9, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1068 | 5,900 | 47940100 |
| 654412 | Feb 9, 2008 | Feb 9, 2008 | St. Mary Land & Exploration Co. | Briscoe "J" #1007 | 7,000 | 47940102 |
| 654291 | Feb 8, 2008 | Feb 8, 2008 | Conocophillips Company | Dix Ranch State C #528B | 7,600 | 47940099 |
| 654285 | Feb 8, 2008 | Feb 8, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 1057 #9 | 7,200 | 47940098 |
| 654285Amendment | Feb 8, 2008 | Feb 8, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 1057 #9 | 7,200 | 47940098 |
| 654282 | Feb 8, 2008 | Feb 8, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 1057 #8 | 7,200 | 47940097 |
| 654222 | Feb 7, 2008 | Feb 7, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 816 #2 | 7,200 | 47940096 |
| 654090 | Feb 6, 2008 | Feb 6, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #295 | 8,600 | 47940093 |
| 654083 | Feb 6, 2008 | Feb 6, 2008 | Legend Natural Gas III, LP | Galvan Ranch N12 #1 | 8,000 | 47940095 |
| 654096 | Feb 4, 2008 | Feb 4, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #296 | 8,700 | 47940094 |
| 653887 | Feb 4, 2008 | Feb 4, 2008 | EOG Resources, Inc. | Garner, Tully C. #94 | 11,000 | 47940092 |
| 653887Amendment | Feb 4, 2008 | Feb 4, 2008 | EOG Resources, Inc. | Garner, Tully C. #94HH | 11,000 | 47940092 |
| 653887Amendment | Feb 4, 2008 | Feb 4, 2008 | EOG Resources, Inc. | Garner, Tully C. #94HH | 11,000 | 47940092 |
| 653877 | Feb 4, 2008 | Feb 4, 2008 | Lewis Petro Properties, Inc. | Owen Briscoe 2147 #7 | 8,000 | 47940091 |
| 653877Amendment | Feb 4, 2008 | Feb 4, 2008 | Lewis Petro Properties, Inc. | Owen Briscoe Gas Unit #7 | 8,000 | 47940091 |
| 653767 | Feb 1, 2008 | Feb 1, 2008 | Lewis Petro Properties, Inc. | Gates 2016 #18A | 6,200 | 47940090 |
| 653549 | Jan 30, 2008 | Jan 30, 2008 | Lewis Petro Properties, Inc. | Gates 1290 #3 | 6,600 | 47940089 |
| 653446 | Jan 28, 2008 | Jan 28, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1077 | 6,000 | 47940087 |
| 653307 | Jan 25, 2008 | Jan 25, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #294 | 9,000 | 47940086 |
| 653283 | Jan 25, 2008 | Jan 25, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1089 | 6,000 | 47940088 |
| 653209 | Jan 25, 2008 | Jan 25, 2008 | Middleton Oil Company | Middleton #2202 | 6,900 | 47932893 |
| 653276 | Jan 24, 2008 | Jan 24, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1088 | 6,000 | 47940085 |
| 653040 | Jan 22, 2008 | Jan 22, 2008 | EOG Resources, Inc. | Cabezon #12HH | 11,000 | 47940083 |
| 653008 | Jan 22, 2008 | Jan 22, 2008 | EOG Resources, Inc. | Slator Ranch #1AC | 11,000 | 47940082 |
| 652959 | Jan 18, 2008 | Jan 18, 2008 | EOG Resources, Inc. | Slator Ranch #1AB | 11,800 | 47940081 |
| 652895 | Jan 17, 2008 | Jan 17, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1087 | 6,000 | 47940080 |
| 652866 | Jan 17, 2008 | Jan 17, 2008 | Laredo Energy | Vergara #3 | 12,000 | 47940079 |
| 652829 | Jan 17, 2008 | Jan 17, 2008 | EOG Resources, Inc. | Benavides, Arturo #7 | 11,500 | 47940078 |
| 652855 | Jan 16, 2008 | Jan 16, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #293 | 9,500 | 47940077 |
| 652853 | Jan 16, 2008 | Jan 16, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #292 | 9,000 | 47940076 |
| 652796 | Jan 16, 2008 | Jan 16, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1054 | 6,000 | 47940075 |
| 652791 | Jan 16, 2008 | Jan 16, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1053 | 6,000 | 47940074 |
| 652587 | Jan 15, 2008 | Jan 15, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1060 | 6,000 | 47940073 |
| 652581 | Jan 15, 2008 | Jan 15, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1059 | 6,000 | 47940072 |
| 652530 | Jan 15, 2008 | Jan 15, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #289 | 8,920 | 47940071 |
| 652493 | Jan 14, 2008 | Jan 14, 2008 | Conocophillips Company | Dix Ranch D #8 | 7,675 | 47940070 |
| 652313 | Jan 9, 2008 | Jan 9, 2008 | St. Mary Land & Exploration Co. | Briscoe "E" #1075 | 6,000 | 47940068 |
| 652469 | Jan 8, 2008 | Jan 8, 2008 | EOG Resources, Inc. | El Viejito "B" #4HH | 14,500 | 47940069 |
| 652206 | Jan 8, 2008 | Jan 8, 2008 | Conocophillips Company | Rosa V Benavides A2 #112 | 9,750 | 47940067 |
| 651748 | Dec 28, 2007 | Dec 28, 2007 | St. Mary Land & Exploration Co. | Gates Ranch "E" #604A | 5,950 | 47940066 |
| 651748Amendment | Dec 28, 2007 | Dec 28, 2007 | St. Mary Land & Exploration Co. | Gates Ranch "E" #604A | 5,950 | 47940066 |
| 651609 | Dec 28, 2007 | Dec 28, 2007 | St. Mary Land & Exploration Co. | Gates Ranch "Y" #704A | 5,950 | 47940063 |
| 651578 | Dec 28, 2007 | Dec 28, 2007 | Lewis Petro Properties, Inc. | Saunders State 108 "H" #5H | 12,500 | 47940062 |
| 651578Amendment | Dec 28, 2007 | Dec 28, 2007 | Lewis Petro Properties, Inc. | Saunders State 108 "H" #5H | 11,000 | 47940062 |
| 651690 | Dec 21, 2007 | Dec 21, 2007 | Lewis Petro Properties, Inc. | Briscoe-Manry 1393 #4 | 8,000 | 47940065 |
| 651681 | Dec 21, 2007 | Dec 21, 2007 | Lewis Petro Properties, Inc. | Briscoe-Manry 1393 #3 | 8,000 | 47940064 |
| 649924 | Dec 21, 2007 | Dec 21, 2007 | White Oak Operating Company LLC | Russel-Winch #9 | 10,009 | 47935291 |
| 649922 | Dec 21, 2007 | Dec 21, 2007 | White Oak Operating Company LLC | L. Winch State #4 | 10,000 | 47932670 |
| 651549 | Dec 20, 2007 | Dec 20, 2007 | St. Mary Land & Exploration Co. | Briscoe "E" #1073 | 6,000 | 47940061 |
| 649055 | Dec 20, 2007 | Dec 20, 2007 | Lewis Petro Properties, Inc. | Palafox Exploration Co. 876 #4 | 6,622 | 47930433 |
| 651461 | Dec 19, 2007 | Dec 19, 2007 | Rosetta Resources Operating LP | South Callaghan Ranch #291 | 8,900 | 47940060 |
| 651459 | Dec 19, 2007 | Dec 19, 2007 | Rosetta Resources Operating LP | South Callaghan Ranch #290 | 8,000 | 47940059 |
| 651406 | Dec 19, 2007 | Dec 19, 2007 | Lewis Petro Properties, Inc. | Palafox Exploration Co. 2182 #76 | 7,200 | 47940058 |
| 651339 | Dec 18, 2007 | Dec 18, 2007 | Virtex Petroleum Company, Inc. | Manry 2292 #18 | 7,900 | 47940057 |
| 651116 | Dec 18, 2007 | Dec 18, 2007 | Devon Energy Production Co, L.P. | The Dinn Mineral Trusts #2 | 11,510 | 47934726 |
| 650855 | Dec 18, 2007 | Dec 18, 2007 | St. Mary Land & Exploration Co. | Gates Ranch "Y" #604 | 6,950 | 47940039 |
| 651058 | Dec 15, 2007 | Dec 15, 2007 | Legend Natural Gas III, LP | Galvan Ranch P16 #1 | 8,000 | 47940056 |
| 651057 | Dec 15, 2007 | Dec 15, 2007 | Legend Natural Gas III, LP | Galvan Ranch P15 #1 | 8,000 | 47940055 |
| 651056 | Dec 15, 2007 | Dec 15, 2007 | Legend Natural Gas III, LP | Galvan Ranch P14 #1 | 8,000 | 47940054 |
| 651055 | Dec 15, 2007 | Dec 15, 2007 | Legend Natural Gas III, LP | Galvan Ranch P8 #1 | 8,000 | 47940053 |
| 651054 | Dec 15, 2007 | Dec 15, 2007 | Legend Natural Gas III, LP | Galvan Ranch P9 #1 | 8,000 | 47940051 |