| 1 | Abercrombie, A. L., Inc | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 2 | Abundance Energy I LLC | Tulsa, OK 74114 | Gas Operator | Jun 2025 |
| 3 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 4 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 5 | Arkana Operating Company, Inc | Fort Worth, TX 76116-5707 | Oil & Gas Operator | Jul 2008 |
| 6 | Bay Oaks Resources LLC | Fort Smith, AR 72913-3129 | Gas Operator | Feb 2018 |
| 7 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2025 |
| 8 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 9 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Apr 2025 |
| 10 | Briar Oil & Gas - Oklahoma 1 LLC | Houston, TX 77027-9392 | Oil & Gas Operator | Jun 2025 |
| 11 | Bricar Inc | Oklahoma City, OK 73108 | Oil & Gas Operator | Nov 1998 |
| 12 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | Jun 2025 |
| 13 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 14 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Oct 2025 |
| 15 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 16 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 17 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 18 | CX Disposals LLC | Minco, OK 73059-9472 | Oil Operator | Jul 2025 |
| 19 | D-Pex Operating Company | | Oil & Gas Operator | Sep 2004 |
| 20 | Daniel-Price Exploration Co | Tulsa, OK 74119 | Gas Operator | Apr 2011 |
| 21 | Davis, Joe D. | Fort Smith, AR 72903 | Gas Operator | Mar 2015 |
| 22 | Deka Exploration Inc | Oklahoma City, OK 73113-0057 | Oil & Gas Operator | Nov 2019 |
| 23 | Dexxon, Inc. | Kiefer, OK 74041 | Oil & Gas Operator | Jun 2025 |
| 24 | Dyne Exploration Company | Plano, TX 75093-6512 | Oil & Gas Operator | Apr 2020 |
| 25 | Eastern Operating Company LLC | Gans, OK 74936 | Gas Operator | Jun 2025 |
| 26 | Echo Production Inc | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 27 | El Paso Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 28 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 29 | Evergreen Operating Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 30 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Jul 2025 |
| 31 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Oct 2025 |
| 32 | FP Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2008 |
| 33 | Garnet Exploration LLC | Spiro, OK 74959-4839 | Gas Operator | Jun 2025 |
| 34 | Geyer Brothers Equipment Company | Noble, OK 73068-8540 | Oil & Gas Operator | Mar 2011 |
| 35 | Glenwood Operating LLC | Wichita Falls, TX 76309-4529 | Gas Operator | May 2025 |
| 36 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Jun 2025 |
| 37 | HCG Energy Corporation & Subs | | Oil & Gas Operator | Mar 2015 |
| 38 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 39 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 40 | Hoover & Wilson Exp & Prod Inc | Fort Smith, AR 72913-5171 | Gas Operator | Jul 2013 |
| 41 | J & J Energy Service LLC | Bokoshe, OK 74930 | Gas Operator | Jun 2025 |
| 42 | Jaco Energy Company Inc | Stigler, OK 74462 | Gas Operator | Jun 2025 |
| 43 | Jec Operating LLC | Oklahoma City, OK 73114-2717 | Oil & Gas Operator | Jun 2025 |
| 44 | JHS Energy, Inc | Denver, CO 80222 | Oil & Gas Operator | Jun 2025 |
| 45 | JMC Exploration Inc | Dallas, TX 75225-5803 | Gas Operator | Jan 2007 |
| 46 | Johnson E Lyle | Oklahoma City, OK 73142 | Oil & Gas Operator | Jun 2025 |
| 47 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 48 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 49 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Jul 2025 |
| 50 | Lear Petroleum Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2015 |
| 51 | Longberry Energy Inc | Keota, OK 74941 | Gas Operator | Jun 2025 |
| 52 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jun 2025 |
| 53 | Malpais Inc | Prague, OK 74864 | Gas Operator | Jun 2025 |
| 54 | Marion Corporation | | Oil & Gas Operator | Jan 2001 |
| 55 | Meade Energy Corporation | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Jun 2025 |
| 56 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 57 | Mueller Thomas C | Fort Smith, AR 72913 | Gas Operator | Aug 2008 |
| 58 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Jul 2025 |
| 59 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 60 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2025 |
| 61 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 62 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 63 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Oct 2025 |
| 64 | Oil Patch Energy LLC | Broken Arrow, OK 74014 | Oil & Gas Operator | Jan 2025 |
| 65 | Oxley Energy LLC | Houston, TX 77042 | Gas Operator | Jun 2025 |
| 66 | Oxley Petroleum | Tulsa, OK 74119-3609 | Oil & Gas Operator | Jan 2020 |
| 67 | Oxley Petroleum Co | Oklahoma City, OK 73118-1044 | Oil & Gas Operator | Sep 2017 |
| 68 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 69 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Jan 2025 |
| 70 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 71 | Piper Operating LLC | Stigler, OK 74462 | Oil & Gas Operator | Jun 2025 |
| 72 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 73 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 74 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Jun 2025 |
| 75 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 76 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 77 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Oct 2025 |
| 78 | Scarth Oil & Gas Co | Amarillo, TX 79101 | Oil & Gas Operator | Feb 1999 |
| 79 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 80 | Sedna Energy LLC | Blanchard, OK 73010-8043 | Gas Operator | Apr 2017 |
| 81 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Jun 2025 |
| 82 | Shields Energy Inc | Fort Smith, AR 72901-4607 | Oil & Gas Operator | Jun 2025 |
| 83 | Shields Operating, Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 84 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |
| 85 | Slawson, Donald C. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 86 | Southern Union Exploration Co. | Austin, TX 78701 | Oil & Gas Operator | Feb 2002 |
| 87 | Spring Resources, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2007 |
| 88 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2025 |
| 89 | Sterling Oil Of Okla Inc | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2006 |
| 90 | Stigler Gas Company | Stigler, OK 74462 | Gas Operator | Feb 2025 |
| 91 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 92 | Tomlinson Oil Co. Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 93 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 94 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 95 | Unit Drilling & Exploration Co | Tulsa, OK 74132-5300 | Oil & Gas Operator | Apr 2025 |
| 96 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2025 |
| 97 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Oct 2025 |
| 98 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Jun 2025 |
| 99 | Vintage Petroleum, Inc. | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 100 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | Aug 2025 |