| 1 | 3-T Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 2 | Ace Energy LLC | Leawood, KS 66211 | Oil & Gas Operator | Jun 2025 |
| 3 | Allen Operating Company, LLC | | Oil & Gas Operator | Dec 2022 |
| 4 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 5 | Aria Operating LLC | | Oil Operator | Jun 2025 |
| 6 | Arkla Exploration Co. | Shreveport, LA 71151 | Oil & Gas Operator | Jan 1993 |
| 7 | Australis TMS Inc. | | Oil & Gas Operator | Jun 2025 |
| 8 | Belden & Blake | | Oil & Gas Operator | Feb 1988 |
| 9 | Biglane Operating Company | | Oil & Gas Operator | Jun 2025 |
| 10 | Black Jack Oil Co Inc | Holliday, TX 76366 | Oil & Gas Operator | Jun 2025 |
| 11 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 12 | Carl E Gungoll Exploration LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2025 |
| 13 | Cleveland Production Company | Summit, MS 39666 | Oil & Gas Operator | Jul 1999 |
| 14 | Consolidated Engy Reserve Inc | | Oil & Gas Operator | Jul 1991 |
| 15 | Cornwell Well Service, Inc. | | Oil & Gas Operator | Feb 2010 |
| 16 | Craft Petroleum Company, Inc. Et Al | | Oil & Gas Operator | Mar 1997 |
| 17 | D. A. Biglane Operating Co Et Al | | Oil Operator | Feb 2004 |
| 18 | Day Dreams Resources, LLC | | Oil & Gas Operator | Jul 2025 |
| 19 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 20 | East Bay Petroleum | | Oil & Gas Operator | Dec 1987 |
| 21 | Emerge Operating, LLC | | Oil & Gas Operator | Jul 2025 |
| 22 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 23 | Energy Reserves Group, Inc. | Wichita, KS 67202 | Oil & Gas Operator | May 2002 |
| 24 | Enserch Exploration | | Oil & Gas Operator | Oct 1996 |
| 25 | Epstein Jr Oper Co | | Oil & Gas Operator | Mar 1991 |
| 26 | Exchange Exploration & Production Co. | Dallas, TX 75219 | Oil & Gas Operator | Jun 2025 |
| 27 | Four Rivers Exploration, Inc. | | Oil & Gas Operator | Sep 2002 |
| 28 | Frio Exploration, L.L.C. | | Gas Operator | Aug 2000 |
| 29 | G & G Production, LLC | | Gas Operator | Aug 2008 |
| 30 | Griffin & Griffin Expl, LLC | | Oil & Gas Operator | Jul 2025 |
| 31 | Griffin & Griffin Oil Co. Inc. | | Oil & Gas Operator | Jun 2001 |
| 32 | Griffin & Griffin Oil Co., Inc Et Al | | Oil & Gas Operator | Jan 2010 |
| 33 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Jul 2025 |
| 34 | Infield Discovery LLC | Madison, MS 39110 | Oil & Gas Operator | May 2025 |
| 35 | J. P. Van Way | | Oil & Gas Operator | Dec 2024 |
| 36 | Jerry P Ogden | | Oil & Gas Operator | Dec 2008 |
| 37 | Liberty Operating Company,LLC | | Oil & Gas Operator | Jul 2025 |
| 38 | Marshall Production Co Inc | | Oil & Gas Operator | Jun 1989 |
| 39 | Meason Oper. Co. For Cinco Energy Corp. | | Oil & Gas Operator | Sep 2000 |
| 40 | Miss Lou Oil Producers, Inc. | | Oil & Gas Operator | Dec 1998 |
| 41 | Miss-Lou Operating LLC | | Oil & Gas Operator | Jul 2025 |
| 42 | Mitchell And R. E. Mitchel | | Oil Operator | Feb 2000 |
| 43 | Murphy Oil USA Inc | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 44 | O'Brien Resources LLC | Shreveport, LA 71136 | Oil Operator | Nov 2017 |
| 45 | Orion Energy Partners LP | Denver, CO 80202 | Oil & Gas Operator | Nov 2010 |
| 46 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 47 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 48 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 49 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 50 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 51 | Pompano Resource Operator LLC | | Oil & Gas Operator | Jun 2025 |
| 52 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Jul 2025 |
| 53 | R & H Oil & Gas, Inc. | | Oil & Gas Operator | Apr 1992 |
| 54 | Radzewicz Operating Corp. | | Oil & Gas Operator | Oct 2017 |
| 55 | Ram Petroleum, LLC | Tylertown, MS 39667 | Oil & Gas Operator | Jul 2025 |
| 56 | Recon Operating, Inc. | | Oil & Gas Operator | Jun 1991 |
| 57 | Red Sands Energy, LLC | | Oil & Gas Operator | Apr 2017 |
| 58 | Resolve Energy Corp | | Gas Operator | May 2009 |
| 59 | Rover Operating, LLC | Chicago, IL 60606 | Oil & Gas Operator | Jun 2025 |
| 60 | Samedan Energy Development Cor | | Oil & Gas Operator | Feb 1987 |
| 61 | Sanchez Oil & Gas Corporation | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 62 | Santa Fe Energy Op Partners LP | | Oil & Gas Operator | Oct 1989 |
| 63 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 64 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 65 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Oct 2025 |
| 66 | Signal, LLC | | Oil & Gas Operator | Jul 2025 |
| 67 | Spooner Petroleum Company | | Oil & Gas Operator | Jul 2025 |
| 68 | State Line Exploration, LLC | | Oil & Gas Operator | Dec 2024 |
| 69 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Oct 2025 |
| 70 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 71 | Venture Oil & Gas, Inc. | Laurel, MS 39440 | Oil & Gas Operator | Jul 2025 |
| 72 | Waller Brothers, Inc. | | Oil & Gas Operator | Jul 2004 |
| 73 | White River Operating LLC | Gilmer, TX 75644 | Oil & Gas Operator | Jul 2025 |