| 1 | 7S Oil & Gas, LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2019 |
| 2 | A.C.T. Operating Company | Lubbock, TX 79401 | Oil & Gas Operator | Apr 2026 |
| 3 | Acoma Operating, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2026 |
| 4 | Alta Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
| 5 | Altex Resources, Inc. | Carney, OK 74832 | Oil & Gas Operator | Mar 2015 |
| 6 | Altura Energy LTD. | Houston, TX 77210 | Oil & Gas Operator | Apr 2000 |
| 7 | Amax Oil & Gas Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 8 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 9 | American Cometra, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2008 |
| 10 | Amerind Oil Company, LTD. | Midland, TX 79701 | Oil & Gas Operator | Nov 2004 |
| 11 | Amoco Production Company | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 12 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Feb 2026 |
| 13 | Antelope Energy Company LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 14 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Apr 2026 |
| 15 | Apv McCamey LLC | MC Camey, TX 79752 | Oil & Gas Operator | Apr 2026 |
| 16 | Aries Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2009 |
| 17 | Aries Operating, LP | Houston, TX 77042 | Oil & Gas Operator | Apr 2026 |
| 18 | Atapco | Houston, TX 77040 | Oil & Gas Operator | Feb 1999 |
| 19 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2026 |
| 20 | Aviator Energy, LLC | Plano, TX 75093 | Oil Operator | Apr 2026 |
| 21 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | Apr 2026 |
| 22 | B. & M. Family Oil Company | Midland, TX 79708 | Oil & Gas Operator | Jan 1999 |
| 23 | B.A.R. Treating Service, Inc. | Austin, TX 78746 | Oil & Gas Operator | Apr 2026 |
| 24 | Banam Corporation | Midland, TX 79702 | Oil & Gas Operator | Nov 2013 |
| 25 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Apr 2026 |
| 26 | Basin Oil & Gas Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2026 |
| 27 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 28 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 29 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 30 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2026 |
| 31 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 32 | Bedrock Production, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Apr 2026 |
| 33 | Bee-Jay Energy | Whiteface, TX 79379 | Oil & Gas Operator | Nov 1993 |
| 34 | Bee-Jay Petro, Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jun 2024 |
| 35 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 36 | Bepco, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2008 |
| 37 | Beryl Oil And Gas, LP | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 38 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 39 | Black Gold Properties | Lubbock, TX 79424 | Oil & Gas Operator | Feb 1999 |
| 40 | Blackflat Oil Company LLC | Lubbock, TX 79424 | Oil Operator | Apr 2026 |
| 41 | BLM Black Gold Properties, LTD. | Decatur, TX 76234 | Oil & Gas Operator | Apr 2026 |
| 42 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2026 |
| 43 | Bopco, L.P. | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 44 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 45 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Apr 2026 |
| 46 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 47 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 48 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 49 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 50 | Broadway Operating Company Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Aug 2002 |
| 51 | Brown, C. L. Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1999 |
| 52 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 53 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 54 | Bryant & White Oil Co. | Whiteface, TX 79379 | Oil & Gas Operator | Nov 2012 |
| 55 | Bryant Oil | Levelland, TX 79336 | Oil & Gas Operator | Apr 2026 |
| 56 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 57 | Bullin, R. E. Operating Inc. | Levelland, TX 79336 | Oil & Gas Operator | Apr 2026 |
| 58 | Bullin, R.E. | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 59 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 60 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 61 | Burleson Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 62 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
| 63 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 64 | Butler, Kevin O. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 65 | Butler, Kevin O. & Assoc., Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 66 | C & S Operating | Whiteface, TX 79379 | Oil & Gas Operator | Apr 2026 |
| 67 | Calico Operating Co., Inc. | Dallas, TX 75205 | Oil & Gas Operator | Dec 2002 |
| 68 | Callaway Production Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 69 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Apr 2026 |
| 70 | Campbell, George M. | Lubbock, TX 79490 | Oil & Gas Operator | Apr 2003 |
| 71 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 72 | Candleridge Oil, Inc. | Fort Worth, TX 76109 | Oil & Gas Operator | Jun 2003 |
| 73 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 74 | Cardwell Oil Corporation | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 75 | Catoilan Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 76 | Central Resources, Inc. | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 77 | Central Texas Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2026 |
| 78 | Century Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 2026 |
| 79 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2026 |
| 80 | Chambers Operating, Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Mar 2006 |
| 81 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2026 |
| 82 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Apr 2026 |
| 83 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2026 |
| 84 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 85 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Apr 2026 |
| 86 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Apr 2026 |
| 87 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 88 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 89 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 90 | Columbia Gas Development Corp. | Houston, TX 77251 | Oil & Gas Operator | Jun 1996 |
| 91 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 92 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 93 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 94 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 95 | Coronado Minerals, LLC | Houston, TX 77208 | Oil & Gas Operator | Apr 2026 |
| 96 | Costilla Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 97 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 98 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 99 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 100 | Cross Timbers Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |