| 1 | Acacia Operating, LLC | | Oil & Gas Operator | Jun 2025 |
| 2 | Ad Astra Resources LLC | Wichita, KS 67203 | Oil & Gas Operator | Aug 2025 |
| 3 | Ainsworth, Otis | | Oil & Gas Operator | Jun 1987 |
| 4 | Alpine Gas Operator, LLC | | Oil & Gas Operator | Jun 2024 |
| 5 | Amax Petroluem Corp. | | Oil & Gas Operator | Nov 1983 |
| 6 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 7 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
| 8 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 9 | Black Gold Production Company | | Oil & Gas Operator | Feb 1998 |
| 10 | Black Jack Oil Co Inc | Holliday, TX 76366 | Oil & Gas Operator | Jun 2025 |
| 11 | Bogue Homa Oil Production LLC | | Oil & Gas Operator | Jun 2025 |
| 12 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 13 | Central Operating, LLC | | Oil & Gas Operator | Jun 2025 |
| 14 | Chevron U. S. A., Inc. -Ca | | Oil & Gas Operator | Jan 2000 |
| 15 | Cheyenne Minerals, Inc. | Houston, TX 77030 | Oil & Gas Operator | Jun 2001 |
| 16 | Cody Operating, Inc. | | Oil & Gas Operator | Jul 2025 |
| 17 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 18 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 19 | Duer Wagner & Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 1998 |
| 20 | E2 Operating LLC | Tulsa, OK 74135 | Oil & Gas Operator | Oct 2025 |
| 21 | Eagle Oil & Gas, LLC (Dba Eagle Oil & Gas Co.) | | Oil & Gas Operator | Dec 2021 |
| 22 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Jul 2025 |
| 23 | Elite Group LLC | | Oil & Gas Operator | Jun 2025 |
| 24 | Energy Production Service Inc | | Oil Operator | Mar 1986 |
| 25 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 26 | EP Operating Co. | Dallas, TX 75201 | Oil & Gas Operator | Jan 1993 |
| 27 | Exxon Corporation -TX | | Oil & Gas Operator | Jan 1982 |
| 28 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 29 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 30 | Goldsberry Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 31 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 32 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 33 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 34 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 35 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Oct 2025 |
| 36 | J. R. Pounds, Inc. | Laurel, MS 39441 | Oil & Gas Operator | Jul 2025 |
| 37 | JSG Services, LLC | | Oil & Gas Operator | Sep 2022 |
| 38 | Kay-Lyn Petroleum Co. | | Oil & Gas Operator | Oct 1989 |
| 39 | KCP Of MS Inc | | Oil & Gas Operator | Jan 1991 |
| 40 | Kem Energy Us ,LLC | | Oil & Gas Operator | Dec 2023 |
| 41 | Larco Drilling & Exploration Corp. | | Oil & Gas Operator | Dec 1999 |
| 42 | Liberty Operating Company,LLC | | Oil & Gas Operator | Jul 2025 |
| 43 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 44 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 45 | Midco Energy, Inc. | | Oil & Gas Operator | Dec 1992 |
| 46 | Midroc Operating Company | | Oil & Gas Operator | Apr 2013 |
| 47 | Midstate Energy Inc | | Oil & Gas Operator | Aug 2017 |
| 48 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 49 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 50 | Odom, Claude | | Oil Operator | Jul 1983 |
| 51 | Oilfield Services And Supply Co. Inc. | | Oil Operator | Sep 1989 |
| 52 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 53 | P.R.P., Inc. | | Oil & Gas Operator | Jun 2025 |
| 54 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 55 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 56 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Oct 2025 |
| 57 | Pine Ridge Operating, L.P. | Waelder, TX 78959 | Oil & Gas Operator | Oct 2025 |
| 58 | Pistol Ridge Partners, LLC | | Oil & Gas Operator | Jun 2025 |
| 59 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Jul 2025 |
| 60 | R. W. Tyson Producing Co.,Inc | | Oil & Gas Operator | Dec 2024 |
| 61 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 62 | Roundtree & Associates, Inc. | | Oil & Gas Operator | Jun 2024 |
| 63 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 64 | Story Oil And Gas Inc | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 65 | Strong Rock Operating Company, LLC | | Oil & Gas Operator | Jul 2025 |
| 66 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
| 67 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 68 | Taza Energy, Inc. | | Oil & Gas Operator | Nov 2009 |
| 69 | Tellus Operating Group, LLC | | Oil & Gas Operator | Jun 2025 |
| 70 | Texas Petroleum Investment Company | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 71 | Tiger Production Company, LLC | | Oil & Gas Operator | Aug 2021 |
| 72 | Transcontinental Oil Corp. | | Oil & Gas Operator | Sep 1985 |
| 73 | Triad Oil & Gas Co Inc | | Oil & Gas Operator | Jun 1994 |
| 74 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 75 | Ultramar Oil & Gas LTD | Houston, TX 77060 | Oil & Gas Operator | Jul 1995 |
| 76 | Union Producing Co. | | Gas Operator | Dec 1992 |
| 77 | Venture Oil & Gas, Inc. | Laurel, MS 39440 | Oil & Gas Operator | Jul 2025 |
| 78 | Victor Producers , LLC. | | Oil & Gas Operator | Jun 2025 |
| 79 | Vintage Petroleum | | Oil & Gas Operator | Feb 2003 |
| 80 | White, Charles R | | Oil Operator | Mar 1987 |