| 1 | 19TH Hole Production, LLC | Humble, TX 77346 | Oil & Gas Operator | May 2025 |
| 2 | 3 S Production, Inc. | Cisco, TX 76437 | Oil & Gas Operator | May 2025 |
| 3 | 3-D Oil & Gas | Winters, TX 79567 | Oil & Gas Operator | May 2025 |
| 4 | 3-M Energy Corporation | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2017 |
| 5 | 4-M Operating Company | Abilene, TX 79601 | Oil & Gas Operator | Jun 2015 |
| 6 | 4T Production LLC | Tuscola, TX 79562 | Oil Operator | May 2025 |
| 7 | 5L Properties | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2002 |
| 8 | 5L Properties, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 9 | 7S Oil & Gas, LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2019 |
| 10 | A.D.S. Resources, Inc. | Lubbock, TX 79413 | Oil & Gas Operator | Jul 2008 |
| 11 | A.E.N. Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jan 1996 |
| 12 | Abilene American Energy, LLC | Abilene, TX 79602 | Oil Operator | May 2025 |
| 13 | Abtex Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2006 |
| 14 | Adams Branch Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Jul 2002 |
| 15 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 16 | Aeon Operating, Inc. | Fate, TX 75132 | Oil & Gas Operator | May 2025 |
| 17 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 18 | Alexander Resources, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 19 | Allegro Investments, Inc. | Victoria, TX 77903 | Oil & Gas Operator | Nov 2020 |
| 20 | Allegro Operating, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2025 |
| 21 | Alpha Energy | Anson, TX 79501 | Oil & Gas Operator | Oct 2016 |
| 22 | Alpha Exploration Co. | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 1998 |
| 23 | Alpine Petroleum | Abilene, TX 79608 | Oil & Gas Operator | Jul 2018 |
| 24 | Altair Energy Corp. | Tyler, TX 75702 | Oil & Gas Operator | Jun 1994 |
| 25 | Alumni Oil LLC | Plano, TX 75024 | Oil Operator | May 2025 |
| 26 | Amble Petroleum Co., Inc. | Tuscola, TX 79562 | Oil Operator | May 2025 |
| 27 | American Eagle Operating LLC | Gainesville, TX 76240 | Oil Operator | May 2025 |
| 28 | American Eagle Operating, Inc. | Spring, TX 77386 | Oil Operator | Aug 2010 |
| 29 | American Energy | Abilene, TX 79604 | Oil & Gas Operator | Jul 2004 |
| 30 | Americo Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2012 |
| 31 | Amherst Energy Holdings, LLC | Highland VLG, TX 75077 | Oil Operator | May 2025 |
| 32 | Ammo Energy, LLC | Oklahoma City, OK 73160 | Oil & Gas Operator | Feb 2009 |
| 33 | Ampak Oil Company | Plano, TX 75074 | Oil & Gas Operator | May 2025 |
| 34 | Anathema, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Dec 1994 |
| 35 | Andalucia Oil Company | San Antonio, TX 78258 | Oil Operator | May 2025 |
| 36 | Anderson, James K. Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 37 | Angle Oil Company | Hays, KS 67601 | Oil Operator | Sep 2002 |
| 38 | Antilley, Joe | Abilene, TX 79602 | Oil & Gas Operator | Jan 2024 |
| 39 | Aogp, LLC | Turtle Lake, WI 54889 | Oil & Gas Operator | Sep 2019 |
| 40 | Aop Operating Corporation | Dallas, TX 75313 | Oil & Gas Operator | Aug 2003 |
| 41 | Apv McCamey LLC | MC Camey, TX 79752 | Oil & Gas Operator | May 2025 |
| 42 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 43 | Atwell Technical Services, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 44 | Augusta Oil & Gas | Abilene, TX 79604 | Oil & Gas Operator | Nov 2002 |
| 45 | Augusta Oil & Gas Inc | Abilene, TX 79604 | Oil & Gas Operator | Dec 2015 |
| 46 | Aztex Petroleum | Chandler, AZ 85249 | Oil & Gas Operator | May 2025 |
| 47 | Azul, Inc. | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 1995 |
| 48 | B.R.H. Investments, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 1998 |
| 49 | Barbee, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 50 | Baron Energy Inc. | San Marcos, TX 78666 | Oil & Gas Operator | May 2025 |
| 51 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 52 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 53 | Bayou Operating Company, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 54 | Bayridge Texas Corp. | Big Spring, TX 79720 | Oil & Gas Operator | Jul 2004 |
| 55 | Beaird, R.A. Oil Operating Co. | Merkel, TX 79536 | Oil & Gas Operator | May 2025 |
| 56 | Beasley Well Service Inc. | Tuscola, TX 79562 | Oil Operator | May 2025 |
| 57 | Beeda Oil Company | Merkel, TX 79536 | Oil & Gas Operator | May 2025 |
| 58 | Bell, Johnny Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2025 |
| 59 | Bell, O. M. | Merkel, TX 79536 | Oil & Gas Operator | Mar 2008 |
| 60 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 61 | Bent Oak Energy Interests, LLC | Houston, TX 77024 | Oil Operator | Oct 2014 |
| 62 | Berry Energy Companies | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 63 | Beta-Tex, An Oklahoma Corp. | Oklahoma City, OK 73157 | Oil & Gas Operator | May 2025 |
| 64 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 65 | Bishop, E.J. | Winters, TX 79567 | Oil & Gas Operator | May 1997 |
| 66 | Blackrock Drilling, LLC | Abilene, TX 79606 | Oil Operator | May 2025 |
| 67 | Blackshear, Charley | Winters, TX 79567 | Oil & Gas Operator | Oct 1998 |
| 68 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 69 | Bluff Creek Petroleum, LLC | Abilene, TX 79603 | Oil & Gas Operator | May 2025 |
| 70 | Bo Dunagin Operating, LLC | Merkel, TX 79536 | Oil Operator | Mar 2019 |
| 71 | Bob Hughes Oil Company, LLC | San Angelo, TX 76901 | Oil & Gas Operator | May 2025 |
| 72 | Bohanan Oil Co. | Gordonville, TX 76245 | Oil & Gas Operator | May 2025 |
| 73 | Bomar Oil & Gas, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2020 |
| 74 | Boondocks Solutions LLC | Tomball, TX 77375 | Oil & Gas Operator | May 2025 |
| 75 | Borden, Roland Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 76 | Borders, Delbert L. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2019 |
| 77 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | May 2025 |
| 78 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 79 | Branch Productions | Graham, TX 76450 | Oil & Gas Operator | May 2019 |
| 80 | Brandt, Bodie | Iowa Park, TX 76367 | Oil & Gas Operator | May 2025 |
| 81 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 82 | Breitling Operating Corporation | Dallas, TX 75201 | Oil & Gas Operator | Aug 2016 |
| 83 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 84 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 85 | Brittany Drilling Co. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2000 |
| 86 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 87 | Brock Resources, Inc. | New Orleans, LA 70112 | Oil & Gas Operator | Nov 1998 |
| 88 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | May 2025 |
| 89 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 90 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 91 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 92 | Burns, P. C. Oil Producers Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2000 |
| 93 | Bustamante Oil Company | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 94 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 95 | Byrne Oil Company | Lubbock, TX 79424 | Oil & Gas Operator | May 2025 |
| 96 | C & C Petroleum Management, LLC | Abilene, TX 79601 | Oil & Gas Operator | May 2025 |
| 97 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Feb 2025 |
| 98 | Can-Tex Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Nov 2003 |
| 99 | Capco Resources Of Texas, Inc | Irving, TX 75063 | Oil & Gas Operator | Jun 2003 |
| 100 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | May 2025 |