| 1 | Achilles Oil, LLC | | Oil & Gas Operator | Jun 2025 |
| 2 | Adco Producing Company | | Oil & Gas Operator | Mar 1989 |
| 3 | Aldridge Operating Co., LLC | | Oil & Gas Operator | Aug 2019 |
| 4 | Alex Oil Co. | | Oil Operator | Jun 1996 |
| 5 | Allstar Oil And Gas Inc. | | Oil & Gas Operator | Nov 1992 |
| 6 | Alpine Well Service Inc | | Oil & Gas Operator | Dec 2023 |
| 7 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 8 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
| 9 | B & B Oil Well Service Company, Inc | | Oil Operator | Aug 1988 |
| 10 | B & W Exploration, Inc. | | Oil & Gas Operator | Dec 2000 |
| 11 | B. H. T. Production, LLC | | Oil & Gas Operator | Apr 2010 |
| 12 | Bailey, S. H. | | Oil & Gas Operator | Jul 1995 |
| 13 | Barnhart Co LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 14 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 15 | Bay Gas, LLC | | Oil & Gas Operator | Jun 2025 |
| 16 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 17 | Belle Oil, Inc. | | Oil & Gas Operator | Jul 2025 |
| 18 | Big Joe Operating Company, Inc. | | Oil & Gas Operator | May 2017 |
| 19 | Biglane Operating Company | | Oil & Gas Operator | Jun 2025 |
| 20 | Black Jack Oil Co Inc | Holliday, TX 76366 | Oil & Gas Operator | Jun 2025 |
| 21 | Bob Bertolet Et Al | | Oil Operator | Jul 1992 |
| 22 | Breland, Leon | | Oil & Gas Operator | Feb 1991 |
| 23 | Briggs Operating Company | | Oil & Gas Operator | Nov 1998 |
| 24 | Brown, Edward L. | | Oil Operator | Sep 1980 |
| 25 | Burnsed Oil Co., Inc. | | Oil & Gas Operator | Jun 2025 |
| 26 | Callon Petroleum Company | Natchez, MS 39120 | Oil & Gas Operator | Jan 2000 |
| 27 | Calto Operating Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | May 2004 |
| 28 | Cardneaux Inc. | | Oil & Gas Operator | Aug 2009 |
| 29 | Castor Exploration, Inc. | | Oil & Gas Operator | Dec 1991 |
| 30 | Cavalier Oil Co. Et Al | | Oil Operator | Jan 1986 |
| 31 | Cavins Oilfield Services, LLC. | | Oil Operator | Apr 2006 |
| 32 | Cedar Grove Energy Corp. | | Oil Operator | Sep 2009 |
| 33 | Christian Well Service | | Oil & Gas Operator | May 1987 |
| 34 | Cleveland Production Company | Summit, MS 39666 | Oil & Gas Operator | Jul 1999 |
| 35 | Colt Energy Inc | Iola, KS 66749 | Oil & Gas Operator | Jun 2025 |
| 36 | Cornwell, G. G. | | Oil & Gas Operator | Sep 2009 |
| 37 | D. A. Biglane Operating Co Et Al | | Oil Operator | Feb 2004 |
| 38 | Dale Exploration Company | | Oil & Gas Operator | May 2004 |
| 39 | David New Operating Co., Inc. | | Oil & Gas Operator | Feb 1999 |
| 40 | David New Operating-Belle Exp | | Oil Operator | Mar 1990 |
| 41 | Day Dreams Resources, LLC | | Oil & Gas Operator | Jul 2025 |
| 42 | Delta Petroleum Inc | Houston, TX 77269-1007 | Oil & Gas Operator | May 2009 |
| 43 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 44 | Diamondhead Oil Co., LLC | | Oil & Gas Operator | Jun 2025 |
| 45 | Dixie Operating Company | Spring, TX 77379 | Oil & Gas Operator | Dec 2002 |
| 46 | Domestic Oil Producers | | Oil Operator | Oct 1980 |
| 47 | Domestic Oil Production | | Oil & Gas Operator | Oct 1989 |
| 48 | Double J Operating Company, Inc. | San Antonio, TX 78205 | Oil Operator | Jan 2008 |
| 49 | Duncan-Taylor & Schumacher | | Oil & Gas Operator | Nov 1987 |
| 50 | Durango Operating, LLC | Madison, MS 39110 | Oil & Gas Operator | Jul 2025 |
| 51 | Easom, Dave Production Co Inc | | Oil & Gas Operator | Nov 1998 |
| 52 | Echols & Assoc. | | Oil Operator | Apr 1986 |
| 53 | El Toro Oil Co. & Flagg Resc. | | Oil & Gas Operator | May 1993 |
| 54 | El Toro Production Co., Inc. | | Oil & Gas Operator | Jan 2016 |
| 55 | Eor, LLC | | Oil & Gas Operator | Nov 2013 |
| 56 | Estate Of William G. Helis | | Oil & Gas Operator | May 1994 |
| 57 | Ethyl Properties Inc. | | Oil & Gas Operator | Aug 1989 |
| 58 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jun 2025 |
| 59 | F & H Production Service | | Oil & Gas Operator | Apr 1987 |
| 60 | FBN Operating Co | | Oil Operator | Nov 1986 |
| 61 | Fi-Ro Corporation | Natchez, MS BADADDR | Oil & Gas Operator | Nov 2001 |
| 62 | Fletcher Operating Co. | | Oil & Gas Operator | May 1989 |
| 63 | Fortenbery Operating Co Inc | | Oil & Gas Operator | May 1993 |
| 64 | Fortenbery Wade | | Oil & Gas Operator | May 1980 |
| 65 | Four Rivers Exploration, Inc. | | Oil & Gas Operator | Sep 2002 |
| 66 | Francis Oil & Gas, LLC | | Oil & Gas Operator | Jan 2011 |
| 67 | Furrh Inc. | | Oil Operator | Apr 1994 |
| 68 | FWF Exploration Inc | | Oil Operator | Oct 1994 |
| 69 | George Tarver Operating Co., LLC | | Oil & Gas Operator | Jun 2025 |
| 70 | Geoterre Operating, L.L.C. | | Oil & Gas Operator | Jun 2025 |
| 71 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 72 | Goldsberry Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 73 | Goldsberry, Et Al | | Oil & Gas Operator | Apr 1988 |
| 74 | Griffin & Griffin Expl, LLC | | Oil & Gas Operator | Jul 2025 |
| 75 | Griffith, Wesley | | Oil & Gas Operator | Jun 2000 |
| 76 | Guaranty Energy Corporation | | Oil & Gas Operator | Aug 1990 |
| 77 | Guernsey Petroleum Corp Of MS | | Oil Operator | Jul 1988 |
| 78 | Guido Production Co Inc | | Oil Operator | May 1995 |
| 79 | H. & N. Operating Co., Inc. | | Oil & Gas Operator | Oct 1997 |
| 80 | Harkins And Co., Et Al | | Oil & Gas Operator | Dec 1980 |
| 81 | Harrington Oil Inc. | | Oil & Gas Operator | Apr 1978 |
| 82 | Harrison Drilling Co | | Oil & Gas Operator | Mar 1981 |
| 83 | Hayes & Assoc Inc | | Oil & Gas Operator | Oct 1991 |
| 84 | Herlihy, John D. | | Oil & Gas Operator | May 1997 |
| 85 | Heron Operating, LLC | | Oil & Gas Operator | Jul 2025 |
| 86 | High Plains Operating Co | | Oil & Gas Operator | Nov 1993 |
| 87 | Hollingsworth & Assoc | | Oil Operator | Feb 1987 |
| 88 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 89 | Hughes & Hughes | | Oil & Gas Operator | May 1984 |
| 90 | Hughes & New Oil Co. | | Oil Operator | Jul 1993 |
| 91 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Jul 2025 |
| 92 | Humble Oil & Refining Co. | Houston, TX 77252 | Oil & Gas Operator | Jan 2000 |
| 93 | Huseman Oil International, Inc. | | Oil & Gas Operator | Feb 1992 |
| 94 | Interstate Producing Ser Inc | | Oil & Gas Operator | May 1986 |
| 95 | J-B Swabbing Co. | | Oil & Gas Operator | Jun 1984 |
| 96 | Jerry P Ogden | | Oil & Gas Operator | Dec 2008 |
| 97 | Kaiser Operating, LLC | | Oil & Gas Operator | Jul 2025 |
| 98 | Kay Lease Service | | Oil Operator | Feb 1981 |
| 99 | Kay Operating Co. | | Oil Operator | May 1982 |
| 100 | KFG Petroleum Corporation | | Oil & Gas Operator | Jul 2025 |