| 1 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2 | 4P Energy Texas, LLC | Denver, CO 80206 | Oil & Gas Operator | Nov 2020 |
| 3 | 6a Production | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 4 | A & B Well Service Inc. | Amarillo, TX 79159 | Oil & Gas Operator | Nov 2006 |
| 5 | Adams, K. S. Jr. | Houston, TX 77001 | Gas Operator | Sep 2013 |
| 6 | Adobe Operating Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 7 | Alliance Resources Corporation | Dallas, TX 75367 | Oil & Gas Operator | Nov 2024 |
| 8 | Amoco Production Company | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 9 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2025 |
| 10 | Ananda Energy Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2021 |
| 11 | Arapahoe Prod. Co. | Borger, TX 79008 | Oil & Gas Operator | May 2012 |
| 12 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 13 | Arkoma, Sandra | Pampa, TX 79066 | Oil & Gas Operator | May 1995 |
| 14 | Armour Properties | Houston, TX 77056 | Oil & Gas Operator | May 1994 |
| 15 | Arrington Production Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 16 | Axis Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | Dec 2025 |
| 17 | B & B Farm Industries, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Apr 2002 |
| 18 | B-J Operating Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 19 | Bannon Energy Inc | Houston, TX 77068 | Oil & Gas Operator | Jun 1998 |
| 20 | Bar L Producers | Fritch, TX 79036 | Oil & Gas Operator | Feb 2025 |
| 21 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 22 | Batton Oil & Gas, LLC | Spearman, TX 79081 | Oil & Gas Operator | Dec 2025 |
| 23 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 24 | Benson-McCown & Company | Amarillo, TX 79114 | Oil & Gas Operator | Jul 2016 |
| 25 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 26 | BHB Operating Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Dec 2025 |
| 27 | Black'S Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 28 | Bond Operating Company | Dallas, TX 75219 | Oil & Gas Operator | Jan 2025 |
| 29 | Borger Resources 2 LLC | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 30 | Borger Resources 3 LLC | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 31 | Borger Resources 4 LLC | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 32 | Bravo Natural Gas, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2012 |
| 33 | Bryan Exploration Company | Panhandle, TX 79068 | Gas Operator | Aug 1993 |
| 34 | Burnett Corp. | Amarillo, TX 79105 | Oil & Gas Operator | May 1998 |
| 35 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 36 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 37 | C & C Oil Producers | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 38 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Sep 2025 |
| 39 | Cal-T Oil Company, Incorporated | Borger, TX 79008 | Oil & Gas Operator | Feb 2008 |
| 40 | Caldwell Production Co. Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2010 |
| 41 | Caprock Engineering, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2018 |
| 42 | Cartex Production | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 43 | Cartex Production Corp. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 44 | Chance Energy Co. Inc. | Amarillo, TX 79114 | Oil & Gas Operator | Sep 1999 |
| 45 | Chase Production Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 46 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2025 |
| 47 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 48 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 49 | Childers, J. C. | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 50 | Circle W Oil & Gas Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 51 | Cirrus Exploration Company | Prosper, TX 75078 | Oil & Gas Operator | Dec 2025 |
| 52 | City Of White Deer | White Deer, TX 79097 | Gas Operator | May 2017 |
| 53 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 54 | Cody Company | Amarillo, TX 79121 | Oil & Gas Operator | Mar 2020 |
| 55 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 56 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 57 | Coreterra Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 58 | Crescendo Resources, L.P. | Amarillo, TX 79188 | Oil & Gas Operator | Oct 2025 |
| 59 | Crouch Petroleum Company | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2015 |
| 60 | Cummings, C. M. Oil & Gas | Lewisville, TX 75029 | Oil & Gas Operator | Nov 1993 |
| 61 | D & S Oil Co. #1 | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 62 | D10 Energy LLC | Stinnett, TX 79083 | Oil & Gas Operator | Dec 2025 |
| 63 | Dakar Operating Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2001 |
| 64 | Dalf Energy LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 65 | Danco Oil & Gas | White Deer, TX 79097 | Oil & Gas Operator | Aug 2013 |
| 66 | Daniels Energy | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 67 | Daniels, J.C. Energy | Pampa, TX 79066 | Oil & Gas Operator | Apr 2001 |
| 68 | Davis Preservation Oil Trust | Denver, CO 80206 | Gas Operator | Mar 1998 |
| 69 | Davis, D. D. Estate Of | Borger, TX 79008 | Oil & Gas Operator | Jul 1998 |
| 70 | Dawkins Energies, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 71 | Dawn Oil & Gas Operators Inc. | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 72 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 73 | Deep Reef Industries | Amarillo, TX 79101 | Oil & Gas Operator | Jan 2004 |
| 74 | Den Cal, Inc. | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 75 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 76 | Devon Energy Production Company, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 77 | Diamond S Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Dec 2025 |
| 78 | Drain Oil Co. | Fritch, TX 79036 | Oil & Gas Operator | Jul 2009 |
| 79 | Dyne Oil & Gas,Inc. | Borger, TX 79008 | Oil & Gas Operator | Dec 2017 |
| 80 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 81 | Enerex Supply, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Nov 1993 |
| 82 | Energon Oil & Gas Inc. | Odessa, TX 79762 | Oil & Gas Operator | Aug 2003 |
| 83 | Energon Oil, Inc. | Amarillo, TX 79114 | Oil & Gas Operator | Dec 2025 |
| 84 | Energy 2000, Inc. | Reno, NV 89501 | Oil & Gas Operator | Dec 2025 |
| 85 | Et Gathering & Processing LLC | Dallas, TX 75225 | Oil Operator | Dec 2024 |
| 86 | Etc Field Services LLC | San Antonio, TX 78258 | Oil Operator | Jun 2018 |
| 87 | Evans Production Co. | Pampa, TX 79066 | Oil & Gas Operator | Sep 2020 |
| 88 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 89 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 90 | Fairway Links Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Aug 2016 |
| 91 | Farrell Oil Company | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2025 |
| 92 | Farrex, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Oct 2008 |
| 93 | Fletcher, M. D. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2007 |
| 94 | Fora Company | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 95 | Fort Worth Natural Gas, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Dec 2025 |
| 96 | Four K Production | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 97 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Sep 2025 |
| 98 | Future Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 1999 |
| 99 | G C & W Inc. | Borger, TX 79007 | Oil & Gas Operator | Oct 2016 |
| 100 | G. H. Ranch Management, LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2013 |