| 1 | Acierto Resources Company, LLC | Houston, TX 77070 | Oil & Gas Operator | Oct 2025 |
| 2 | Adco Producing Company | | Oil & Gas Operator | Mar 1989 |
| 3 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 4 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 5 | Anadarko E&P Company LP | Houston, TX 77251 | Oil & Gas Operator | Aug 2014 |
| 6 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 7 | Andover Oil Company | | Oil Operator | Sep 1982 |
| 8 | Arco O & G Co-Div Atl Rich Co | | Oil & Gas Operator | Feb 1994 |
| 9 | Arkla Exploration Co. | Shreveport, LA 71151 | Oil & Gas Operator | Jan 1993 |
| 10 | Axis Onshore, LLC | | Oil & Gas Operator | Apr 2008 |
| 11 | Axis Onshore, LP | | Oil & Gas Operator | Dec 2010 |
| 12 | Bachman Resources Group Inc. | | Oil Operator | Nov 2024 |
| 13 | Bay Gas, LLC | | Oil & Gas Operator | Jun 2025 |
| 14 | Belco Operating Corp. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 15 | Ben Carroll | | Oil Operator | Dec 1985 |
| 16 | Big Joe Operating Company, Inc. | | Oil & Gas Operator | May 2017 |
| 17 | Blackbrush O & G, LLC | San Antonio, TX 78259 | Oil & Gas Operator | Oct 2025 |
| 18 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Oct 2025 |
| 19 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Oct 2025 |
| 20 | Campbell & Associates | | Oil & Gas Operator | Aug 1987 |
| 21 | Caruthers Operating Co., Inc. | | Oil & Gas Operator | Jul 2010 |
| 22 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Oct 2025 |
| 23 | Cliffs Oil And Gas Company | | Oil & Gas Operator | Oct 1997 |
| 24 | Concord Operating Incorporated | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2008 |
| 25 | Crain & Dore Production Co Inc | | Oil & Gas Operator | Oct 1990 |
| 26 | D & D Expl Co-Mba Energy | | Oil Operator | Nov 1985 |
| 27 | Dale Exploration Company | | Oil & Gas Operator | May 2004 |
| 28 | David New Operating Co., Inc. | | Oil & Gas Operator | Feb 1999 |
| 29 | Day Town Operating, LLC | | Oil & Gas Operator | Jan 2025 |
| 30 | Dixie Operating Company | Spring, TX 77379 | Oil & Gas Operator | Dec 2002 |
| 31 | Dore-Dyn Production Co., Inc. | | Oil & Gas Operator | Jul 1993 |
| 32 | Eddie Mayo | | Oil Operator | Jun 2006 |
| 33 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 34 | Energy Reserves Group | Houston, TX 770563020 | Oil & Gas Operator | Apr 1996 |
| 35 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 36 | F W Rabalais, Inc. | | Oil & Gas Operator | Dec 2014 |
| 37 | Fernwood Corporation | | Oil Operator | Dec 1986 |
| 38 | Flash Gas & Oil, Inc. | | Oil & Gas Operator | May 1991 |
| 39 | Florida Exploration Co | Aurora, CO 80014 | Oil & Gas Operator | Sep 1989 |
| 40 | Fortune Gas & Oil, Inc. | | Oil & Gas Operator | Apr 2004 |
| 41 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Oct 2025 |
| 42 | Four Rivers Exploration, Inc. | | Oil & Gas Operator | Sep 2002 |
| 43 | Frank Spooner | | Oil & Gas Operator | Mar 1984 |
| 44 | Franks Petroleum, Inc. Et Al | | Oil & Gas Operator | Oct 1989 |
| 45 | Geoterre Operating, L.L.C. | | Oil & Gas Operator | Jun 2025 |
| 46 | Goldsberry Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 47 | Gravtro, Inc. | | Oil Operator | Apr 1986 |
| 48 | Griffin & Griffin Oil Co. Inc. | | Oil & Gas Operator | Jun 2001 |
| 49 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 50 | Gulf South Pipeline Company, LLC | | Oil & Gas Operator | Jan 2025 |
| 51 | Gulf South Pipeline Company, LP | Houston, TX 77001 | Oil & Gas Operator | Dec 2020 |
| 52 | Hamon Oil Company | | Oil & Gas Operator | Aug 1985 |
| 53 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 54 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Oct 2025 |
| 55 | Hughes & Hughes | | Oil & Gas Operator | May 1984 |
| 56 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Jul 2025 |
| 57 | Hughes Eastern Petroleum, LTD. | | Oil & Gas Operator | Jun 1986 |
| 58 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 59 | J. P. Van Way | | Oil & Gas Operator | Dec 2024 |
| 60 | Jake L. Hamon | | Oil & Gas Operator | Dec 1983 |
| 61 | JMR Oil, Inc. | | Oil & Gas Operator | Sep 2006 |
| 62 | Justiss Oil Company, Inc. | Jena, LA 71342 | Oil & Gas Operator | Jun 2025 |
| 63 | Justiss-Mears Oil Co. | | Oil & Gas Operator | Feb 1981 |
| 64 | Justiss-Mears Oil Co., Et Al | | Oil & Gas Operator | Feb 1981 |
| 65 | Justiss-Mears-D. Latimer | | Oil Operator | Mar 1979 |
| 66 | Kelly H. Baxter | Austin, TX 78767 | Oil & Gas Operator | Nov 2006 |
| 67 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 68 | L.S.E. Energy-V.P. Smith | | Oil Operator | Mar 1988 |
| 69 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 70 | LGS Exploration, Inc. | | Oil & Gas Operator | Jan 1991 |
| 71 | Louisiana Intrastate Gas Corp. | | Oil Operator | Feb 1994 |
| 72 | Lse Energy Co. | | Oil Operator | Mar 1989 |
| 73 | Lse Energy Operating Co. Inc. | | Oil Operator | Jun 1996 |
| 74 | Mallard Drilling Corp. | | Oil & Gas Operator | Jan 1993 |
| 75 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Aug 2025 |
| 76 | Martineau Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2025 |
| 77 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 78 | Meason Operating Company | Natchez, MS 39121 | Oil & Gas Operator | Dec 2011 |
| 79 | Menoah Petroleum Inc | | Oil & Gas Operator | Dec 2024 |
| 80 | Mid-Continent Energy Operating | | Gas Operator | Aug 2007 |
| 81 | MJB Production Company, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | Oct 2025 |
| 82 | Nelson Energy, Inc. | | Oil & Gas Operator | Nov 2024 |
| 83 | Occidental Energy Company, Inc. | Houston, TX 77282 | Oil & Gas Operator | Jul 2021 |
| 84 | Oil Patch Operators, LLC | | Oil & Gas Operator | Jul 2005 |
| 85 | Osr Oil & Gas Corp | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 86 | Owl Creek Production Co., Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2006 |
| 87 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 88 | Perna Oil & Gas LLC | | Oil & Gas Operator | Nov 2024 |
| 89 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 90 | Petro-Guard Production,L.L.C. | Houston, TX 77063 | Oil & Gas Operator | Dec 2024 |
| 91 | Planet Resource Operating, LLC | | Oil & Gas Operator | Nov 2024 |
| 92 | Pryme Energy, LLC | | Oil & Gas Operator | Feb 2015 |
| 93 | R. A. Campbell Company | | Oil & Gas Operator | Nov 1995 |
| 94 | Rabb Contracting Company, L.L.C. | | Oil Operator | Nov 2024 |
| 95 | Sam Spears, Jr. | | Oil & Gas Operator | Sep 1998 |
| 96 | Sanchez Oil & Gas Corporation | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 97 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 98 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 99 | Sante Fe Minerals | | Oil & Gas Operator | Dec 1987 |
| 100 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |