| 640263 | Jun 14, 2007 | Jun 14, 2007 | Laredo Energy | Fernandez #150535900 | 15,000 |
| 640250 | Jun 14, 2007 | Jun 14, 2007 | Conocophillips Company | Jennings Ranch AA #4450535899 | 13,436 |
| 638816 | Jun 14, 2007 | Jun 14, 2007 | Houston Exploration Company, The | Yzaguirre-Leo Gas Unit #1650535877 | 11,900 |
| 640189 | Jun 13, 2007 | Jun 13, 2007 | El Paso E&P Zapata, L.P. | Ramirez, N. G. #150535898 | 12,000 |
| 640189Amendment | Jun 13, 2007 | Jun 13, 2007 | El Paso E&P Zapata, L.P. | Ramirez, N. G. #150535898 | 12,000 |
| 640170 | Jun 13, 2007 | Jun 13, 2007 | Conocophillips Company | Jennings Ranch D #3350535896 | 12,900 |
| 640167 | Jun 13, 2007 | Jun 13, 2007 | Conocophillips Company | Jennings Ranch AA #4550535895 | 13,300 |
| 640092 | Jun 12, 2007 | Jun 12, 2007 | Conocophillips Company | Jennings Ranch D #3250535894 | 13,100 |
| 639998 | Jun 12, 2007 | Jun 12, 2007 | Pogo Producing Company | Haynes, L. #17850535893 | 10,100 |
| 639967 | Jun 11, 2007 | Jun 11, 2007 | Chevron U. S. A. Inc. | Uribe, S. #1450535892 | 11,800 |
| 639925 | Jun 11, 2007 | Jun 11, 2007 | EOG Resources, Inc. | Barrocito, B. M. #750535891 | 12,500 |
| 639939 | Jun 8, 2007 | Jun 8, 2007 | Conocophillips Company | Don Jose Land & Cattle Co Ltd #150535890 | 10,100 |
| 639852 | Jun 7, 2007 | Jun 7, 2007 | Chevron U. S. A. Inc. | Martinez, G. #1150535888 | 11,700 |
| 639848 | Jun 7, 2007 | Jun 7, 2007 | Chevron U. S. A. Inc. | Rangel, B. M. #950535887 | 12,150 |
| 639847 | Jun 7, 2007 | Jun 7, 2007 | Chevron U. S. A. Inc. | Rangel, B. M. #850535886 | 11,900 |
| 639846 | Jun 7, 2007 | Jun 7, 2007 | United Resources LP | Galo #450535885 | 11,500 |
| 639544 | Jun 6, 2007 | Jun 6, 2007 | Endeavor Natural Gas, LP | Solis #150535889 | 9,900 |
| 639544Amendment | Jun 6, 2007 | Jun 6, 2007 | Endeavor Natural Gas, LP | Solis #150535889 | 9,900 |
| 635823 | Jun 6, 2007 | Jun 6, 2007 | Pogo Producing Company | Rathmell, J. G. #3450535855 | 11,200 |
| 639684 | Jun 1, 2007 | Jun 1, 2007 | Paloma Resources, LLC | Las Presas-Garcia "A" #A 150535884 | 10,300 |
| 635519 | Jun 1, 2007 | Jun 1, 2007 | Pogo Producing Company | G.G. Decarreon #1350535584 | 10,250 |
| 639529 | May 31, 2007 | May 31, 2007 | Thorp Petroleum Corporation | Donnell Minerals #150535880 | 7,200 |
| 639529Amendment | May 31, 2007 | May 31, 2007 | Thorp Petroleum Corporation | Donnell Minerals #150535880 | 7,700 |
| 639606 | May 30, 2007 | May 30, 2007 | Legend Natural Gas II, LP | El Ebanito #350535883 | 14,000 |
| 639566 | May 30, 2007 | May 30, 2007 | El Paso E&P Zapata, L.P. | Santa Maria Minerals #150535881 | 11,200 |
| 639566Amendment | May 30, 2007 | May 30, 2007 | El Paso E&P Zapata, L.P. | Santa Maria Minerals #150535881 | 11,200 |
| 639561 | May 29, 2007 | May 29, 2007 | Legend Natural Gas II, LP | Whittier Gas Unit 4 #150535882 | 14,000 |
| 638852 | May 18, 2007 | May 18, 2007 | Chesapeake Operating, Inc. | Garza #150535879 | 12,000 |
| 638709 | May 18, 2007 | May 18, 2007 | El Paso E&P Zapata, L.P. | Haynes "A" #650535875 | 15,200 |
| 638793 | May 17, 2007 | May 17, 2007 | Houston Exploration Company, The | Yzaguirre-Leo Gas Unit #1750535876 | 12,000 |
| 638678 | May 16, 2007 | May 16, 2007 | El Paso E&P Zapata, L.P. | Gutierrez et Al #350535874 | 10,900 |
| 638678Amendment | May 16, 2007 | May 16, 2007 | El Paso E&P Zapata, L.P. | Gutierrez et Al #350535874 | 10,900 |
| 638531 | May 15, 2007 | May 15, 2007 | Ricochet Energy, Inc. | G.G. Salinas #250535873 | 8,500 |
| 638211 | May 15, 2007 | May 15, 2007 | Houston Exploration Company, The | Amando Garza Trust #350535869 | 10,500 |
| 638211Amendment | May 15, 2007 | May 15, 2007 | Forest Oil Corporation | 7A Investments Ltd. GU #150535869 | 10,500 |
| 638264 | May 11, 2007 | May 11, 2007 | Houston Exploration Company, The | Cuellar, Maria #2050535871 | 10,000 |
| 638264Amendment | May 11, 2007 | May 11, 2007 | Forest Oil Corporation | Cuellar, Maria #2050535871 | 10,000 |
| 637914 | May 11, 2007 | May 11, 2007 | Houston Exploration Company, The | Haynes "D" #250533279 | 14,300 |
| 636295 | May 11, 2007 | May 11, 2007 | Weekley Energy Group, LLC | Gonzales, Graciela "A" #150530589 | 6,800 |
| 638245 | May 10, 2007 | May 10, 2007 | Devon Energy Production Co, L.P. | Jennings #9050535870 | 13,200 |
| 637900 | May 10, 2007 | May 10, 2007 | Houston Exploration Company, The | Haynes "B" #550533086 | 14,500 |
| 636864 | May 10, 2007 | May 10, 2007 | Pogo Producing Company | Haynes, L. #7750534535 | 10,500 |
| 638146 | May 9, 2007 | May 9, 2007 | EOG Resources, Inc. | Marshall, S. G. #34HH50535868 | 11,822 |
| 638138 | May 9, 2007 | May 9, 2007 | Eagle Oil & Gas Co. | Singer #150535867 | 12,000 |
| 638138Amendment | May 9, 2007 | May 9, 2007 | Eagle Oil & Gas Co. | Singer #150535867 | 13,000 |
| 638025 | May 7, 2007 | May 7, 2007 | Chesapeake Operating, Inc. | Vasquez, Romeo J. #1050535866 | 12,000 |
| 638025Amendment | May 7, 2007 | May 7, 2007 | Chesapeake Operating, Inc. | Vasquez, Romeo J. #1050535866 | 12,000 |
| 637851 | May 3, 2007 | May 3, 2007 | Chevron U. S. A. Inc. | Vidaurri Martinez G.U. #150535864 | 9,600 |
| 637164 | May 3, 2007 | May 3, 2007 | DCP Midstream, LP | Laredo Lopeno #150535865 | 320 |
| 637528 | Apr 30, 2007 | Apr 30, 2007 | EOG Resources, Inc. | Slator Ranch #T 350535863 | 13,000 |
| 637490 | Apr 30, 2007 | Apr 30, 2007 | Chesapeake Operating, Inc. | Alexander "A" #450535862 | 12,000 |
| 637490Amendment | Apr 30, 2007 | Apr 30, 2007 | Chesapeake Operating, Inc. | Alexander "A" #450535862 | 14,000 |
| 637263 | Apr 26, 2007 | Apr 26, 2007 | EOG Resources, Inc. | BMT-Barrocito #150535860 | 13,000 |
| 637242 | Apr 24, 2007 | Apr 24, 2007 | Eagle Oil & Gas Co. | Uribe #250535861 | 10,500 |
| 637163 | Apr 20, 2007 | Apr 20, 2007 | United Resources LP | Whittier #350535859 | 11,000 |
| 637079 | Apr 18, 2007 | Apr 18, 2007 | Legend Natural Gas II, LP | La Soledad #650535858 | 14,000 |
| 637072 | Apr 18, 2007 | Apr 18, 2007 | Legend Natural Gas II, LP | La Soledad #850535857 | 12,000 |
| 637069 | Apr 18, 2007 | Apr 18, 2007 | Legend Natural Gas II, LP | La Soledad #750535856 | 12,000 |
| 636336 | Apr 17, 2007 | Apr 17, 2007 | Weekley Energy Group, LLC | Zamora, Jonnell #1R50502883 | 8,500 |
| 636474 | Apr 16, 2007 | Apr 16, 2007 | Chesapeake Operating, Inc. | Las Avispas #250535851 | 12,000 |
| 636751 | Apr 14, 2007 | Apr 14, 2007 | El Paso E&P Zapata, L.P. | Benavides "A" #850535854 | 11,500 |
| 636562 | Apr 13, 2007 | Apr 13, 2007 | El Paso E&P Zapata, L.P. | Haynes "A" #550535853 | 16,500 |
| 636495 | Apr 12, 2007 | Apr 12, 2007 | Newfield Exploration Company | Flora E. G. de Volpe Unit #150535852 | 13,000 |
| 636281 | Apr 6, 2007 | Apr 6, 2007 | Chesapeake Operating, Inc. | Laurel, O. M. Estate #1850535850 | 14,000 |
| 636264 | Apr 6, 2007 | Apr 6, 2007 | Pogo Producing Company | Rathmell, J. G. #3050535728 | 10,830 |
| 634556 | Apr 5, 2007 | Apr 5, 2007 | Conocophillips Company | Cassin, Edward #1050535829 | 12,800 |
| 636207 | Apr 4, 2007 | Apr 4, 2007 | EOG Resources, Inc. | Slator Ranch #C 350535849 | 13,000 |
| 636171 | Apr 4, 2007 | Apr 4, 2007 | Davis Gulf Coast, Inc. | Benavides, Servand #150535848 | 19,000 |
| 636171Amendment | Apr 4, 2007 | Apr 4, 2007 | New Gulf Operating, LLC | Benavides, Servand #150535848 | 19,000 |
| 636062 | Apr 3, 2007 | Apr 3, 2007 | Legend Natural Gas II, LP | La Soledad #550535847 | 12,000 |
| 636001 | Apr 2, 2007 | Apr 2, 2007 | Laredo Energy | Garza #250535846 | 16,000 |
| 635922 | Apr 2, 2007 | Apr 2, 2007 | Cody Energy LLC | Palmyra #1D50535845 | 4,500 |
| 635841 | Mar 30, 2007 | Mar 30, 2007 | Conocophillips Company | Whittier, L Estate #450535844 | 9,600 |
| 635841Amendment | Mar 30, 2007 | Mar 30, 2007 | Conocophillips Company | Whittier, L Estate #450535844 | 9,600 |
| 635669 | Mar 30, 2007 | Mar 30, 2007 | El Paso E&P Zapata, L.P. | Lozano #150535440 | 9,602 |
| 635743 | Mar 29, 2007 | Mar 29, 2007 | Pogo Producing Company | Haynes, L. #17750535843 | 12,200 |
| 635701 | Mar 29, 2007 | Mar 29, 2007 | Chesapeake Operating, Inc. | Singer B #450535842 | 12,000 |
| 635652 | Mar 28, 2007 | Mar 28, 2007 | Conocophillips Company | Jennings Ranch AA #4250535840 | 11,300 |
| 635648 | Mar 28, 2007 | Mar 28, 2007 | Conocophillips Company | Jennings Ranch AA #4350535839 | 11,300 |
| 635640 | Mar 28, 2007 | Mar 28, 2007 | Conocophillips Company | La Perla B #2450535841 | 11,225 |
| 635635 | Mar 27, 2007 | Mar 27, 2007 | Chevron U. S. A. Inc. | Marshall, S. G. #2850535836 | 11,750 |
| 635634 | Mar 27, 2007 | Mar 27, 2007 | Chevron U. S. A. Inc. | Marshall, S. G. #3250535837 | 12,000 |
| 635528 | Mar 26, 2007 | Mar 26, 2007 | Legend Natural Gas II, LP | Whittier #750535838 | 15,000 |
| 635528Amendment | Mar 26, 2007 | Mar 26, 2007 | Legend Natural Gas II, LP | Whittier #750535838 | 15,000 |
| 635461 | Mar 26, 2007 | Mar 26, 2007 | Paloma Resources, LLC | Ramirez #150535835 | 10,300 |
| 633499 | Mar 23, 2007 | Mar 23, 2007 | Houston Exploration Company, The | Haynes #3250535814 | 15,000 |
| 635553 | Mar 21, 2007 | Mar 21, 2007 | El Paso E&P Zapata, L.P. | Zachry #550535834 | 12,000 |
| 635098 | Mar 20, 2007 | Mar 20, 2007 | Chesapeake Operating, Inc. | Las Avispas #350535833 | 12,000 |
| 635045 | Mar 19, 2007 | Mar 19, 2007 | Chesapeake Operating, Inc. | Cuellar, J. Vela #650535832 | 14,000 |
| 632544 | Mar 19, 2007 | Mar 19, 2007 | Pogo Producing Company | Decarreon, G.G. #1650535808 | 11,500 |
| 633604 | Mar 15, 2007 | Mar 15, 2007 | Conocophillips Company | Laurel Mineral Estate #2050535818 | 12,400 |
| 633493 | Mar 14, 2007 | Mar 14, 2007 | Houston Exploration Company, The | Haynes #3350535813 | 15,000 |
| 633488 | Mar 14, 2007 | Mar 14, 2007 | Houston Exploration Company, The | Haynes #2850535812 | 12,400 |
| 633485 | Mar 14, 2007 | Mar 14, 2007 | Houston Exploration Company, The | Haynes #3050535811 | 15,000 |
| 634756 | Mar 13, 2007 | Mar 13, 2007 | Kebo Oil & Gas, Inc. | Fernando Garza Deep #250535831 | 12,900 |
| 634679 | Mar 13, 2007 | Mar 13, 2007 | EOG Resources, Inc. | Alexander, Maureen #650535830 | 10,000 |
| 633348 | Mar 13, 2007 | Mar 13, 2007 | Pogo Producing Company | Haynes, L. #16950535825 | 10,100 |
| 633348Amendment | Mar 13, 2007 | Mar 13, 2007 | Pogo Producing Company LLC | Haynes, L. #16950535825 | 10,100 |
| 634368 | Mar 7, 2007 | Mar 7, 2007 | Legend Natural Gas II, LP | La Soledad #450535828 | 14,000 |
| 634264 | Mar 6, 2007 | Mar 6, 2007 | Chevron U. S. A. Inc. | Marshall, S. G. #3350535827 | 11,500 |