| 1 | Abel, M.D. Co. | Lampasas, TX 76550 | Oil & Gas Operator | Jun 2017 |
| 2 | Alaron Energy, Inc. | Irving, TX 75038 | Oil & Gas Operator | Sep 2025 |
| 3 | Allison Lease Services LLC | Boerne, TX 78006 | Oil & Gas Operator | Sep 2025 |
| 4 | Anderson Oil LTD. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Sep 2025 |
| 5 | Anderson, James K. Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 2025 |
| 6 | Atlantic Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 7 | Aztec Oil & Gas Company "A" | Wichita Falls, TX 76309 | Oil & Gas Operator | Sep 2010 |
| 8 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 9 | Beacon Petroleum MGMT.,Inc. | Dallas, TX 75244 | Oil & Gas Operator | Mar 1997 |
| 10 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 11 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 12 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 13 | BLS Production Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2025 |
| 14 | Bob Hughes Oil Company, LLC | San Angelo, TX 76901 | Oil & Gas Operator | Sep 2025 |
| 15 | Bommer Engineering Co. | San Antonio, TX 78260 | Oil & Gas Operator | Sep 2025 |
| 16 | Bowerman Energy Company | Arlington, TX 76004 | Oil & Gas Operator | Dec 2006 |
| 17 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 18 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 19 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 20 | Broadway Petroleum Company, LLC | New York, NY 10152 | Oil Operator | Sep 2025 |
| 21 | Byrd Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 22 | Cazar Energy Inc | Austin, TX 78734 | Oil & Gas Operator | Sep 2025 |
| 23 | Cfo Resources, Inc. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Sep 2025 |
| 24 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 25 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Sep 2025 |
| 26 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Sep 2025 |
| 27 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Sep 2025 |
| 28 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Sep 2025 |
| 29 | CRT'S, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Aug 2008 |
| 30 | CTX Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Aug 2003 |
| 31 | Cyclone Exploration, Inc. | Florence, CO 81226 | Oil & Gas Operator | Sep 2025 |
| 32 | Da Crowe & Associates, Inc | Chappell Hill, TX 77426 | Oil & Gas Operator | Sep 2010 |
| 33 | Dallas Operating Corp. | Dallas, TX 75205 | Oil & Gas Operator | Nov 2006 |
| 34 | Damron Energy | Eden, TX 76837 | Oil & Gas Operator | Jan 2015 |
| 35 | Damron Energy, LLC | Eden, TX 76837 | Oil & Gas Operator | Sep 2025 |
| 36 | Daniel Explorations Inc | Georgetown, TX 78627 | Oil & Gas Operator | Apr 2009 |
| 37 | Daubert Operating, L.L.C. | San Antonio, TX 78209 | Oil Operator | Sep 2025 |
| 38 | Delfin Operating, LLC | Dallas, TX 75243 | Oil & Gas Operator | Sep 2025 |
| 39 | Diamondback E&P LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 40 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 41 | Dyad Petroleum Company | Midland, TX 79710 | Oil & Gas Operator | Sep 2021 |
| 42 | El Dorado Resources Inc. | Waco, TX 76710 | Oil & Gas Operator | Oct 2009 |
| 43 | Elco Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Dec 2014 |
| 44 | Encon Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 2025 |
| 45 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 46 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | May 2025 |
| 47 | Enexco, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Mar 2017 |
| 48 | Enrich Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Sep 2025 |
| 49 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 50 | F & S Petroleum, L.L.C. | Lebanon, MO 65536 | Oil & Gas Operator | Sep 2025 |
| 51 | Fiveash Operating Company, Inc. | Christoval, TX 76935 | Oil & Gas Operator | Aug 2003 |
| 52 | Flag Energy, LLC | Centerton, AR 72719 | Oil & Gas Operator | Nov 2018 |
| 53 | Flint Oil & Gas | San Angelo, TX 76904 | Oil & Gas Operator | Aug 2003 |
| 54 | Force 4 Energy Resources, Inc. | Austin, TX 78733 | Oil & Gas Operator | Aug 2005 |
| 55 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 56 | Free Rein Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Sep 2025 |
| 57 | Fueled Resources Inc | Boyd, TX 76023 | Oil & Gas Operator | Sep 2025 |
| 58 | Gaea Services, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Sep 2021 |
| 59 | Geosurveys, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 2025 |
| 60 | Glahn Resources, Inc. | Arlington, TX 76003 | Oil & Gas Operator | Sep 2025 |
| 61 | Golden Oil And Ranch, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 62 | Golden Specialties Oil & Gas | Midland, TX 79708 | Oil & Gas Operator | Sep 2025 |
| 63 | Green, Roy W. Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2021 |
| 64 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 65 | Guffey, WM. R. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2015 |
| 66 | H-M Resource Management, Inc. | Houston, TX 77055 | Oil & Gas Operator | Feb 2023 |
| 67 | Halvey Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Oct 2004 |
| 68 | Hanson Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 69 | Harrison Interests, LTD. | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 70 | Harvest Petroleum Inc. | Frisco, TX 75033 | Oil & Gas Operator | Sep 2025 |
| 71 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Sep 2025 |
| 72 | Horizon Well Services, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2025 |
| 73 | Inland Ocean, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Sep 2025 |
| 74 | J L B Operating Co. | Midland, TX 79701 | Oil & Gas Operator | Aug 2000 |
| 75 | Jasper Energy, Incorporated | Decatur, TX 76234 | Oil Operator | Sep 2025 |
| 76 | Jim-Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2003 |
| 77 | Krocan Energy Corporation | Bowling Green, KY 42102 | Oil & Gas Operator | Sep 2025 |
| 78 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 79 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Sep 2025 |
| 80 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 81 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 82 | Limark Corporation | Midland, TX 79702 | Oil & Gas Operator | Dec 2003 |
| 83 | Lively Energy & Development Corp | Boerne, TX 78015 | Oil & Gas Operator | May 2015 |
| 84 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 85 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |
| 86 | Magnum Oilfield Services LLC | Bakersfield, CA 93309 | Oil Operator | Sep 2025 |
| 87 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Jul 2025 |
| 88 | Martin Petroleum Corp. | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 89 | McBee, Jim Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2012 |
| 90 | McCammon Oil & Gas, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Sep 2025 |
| 91 | McCann Corporation | Midland, TX 79710 | Oil & Gas Operator | Sep 2025 |
| 92 | Mercury Operating, LLC | Dallas, TX 75208 | Oil & Gas Operator | Sep 2025 |
| 93 | Mextex Operating Company | Austin, TX 78734 | Oil & Gas Operator | Sep 2025 |
| 94 | MGM Oil & Gas Inc. | Ballinger, TX 76821 | Oil & Gas Operator | Sep 2025 |
| 95 | Mid-Continent Energy, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2020 |
| 96 | Midland Oil And Gas, Inc. | Midland, TX 79705 | Oil & Gas Operator | Sep 2025 |
| 97 | Minute Hand LLC | Brenham, TX 77834 | Oil & Gas Operator | Sep 2025 |
| 98 | Morrow Resources, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2004 |
| 99 | Mote Resources, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2004 |
| 100 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Sep 2025 |