| 1 | 1776 Energy Operators, LLC | Houston, TX 77070 | Oil & Gas Operator | Feb 2026 |
| 2 | Ace Drilling Services, Inc. | | Oil & Gas Operator | Sep 1987 |
| 3 | Addie, James & John Thornton | | Oil & Gas Operator | Dec 2024 |
| 4 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Dec 2025 |
| 5 | Apollo Petroleum Corporation | | Oil & Gas Operator | Dec 2012 |
| 6 | Arkla Energy Resources | Shreveport, LA 71151 | Oil & Gas Operator | Mar 2015 |
| 7 | B. G. Denton | | Oil & Gas Operator | Dec 2023 |
| 8 | B. J. Long | | Oil & Gas Operator | Nov 1989 |
| 9 | Black Bayou Management Co Inc. | | Oil & Gas Operator | Aug 1980 |
| 10 | Boarich Petroleum Corporation | | Gas Operator | Mar 1996 |
| 11 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 12 | Celeron Oil & Gas Company | | Oil & Gas Operator | Dec 1987 |
| 13 | Channel Exploration Company | | Oil & Gas Operator | Feb 1997 |
| 14 | Charlie G. James | | Gas Operator | Jul 1989 |
| 15 | Comstock Oil & Gas--La, LLC | | Oil & Gas Operator | Dec 2024 |
| 16 | D & T Company | | Oil & Gas Operator | Jun 1983 |
| 17 | D. A. Milton | | Oil & Gas Operator | Dec 2016 |
| 18 | Day Dreams Resources, LLC | | Oil & Gas Operator | Dec 2025 |
| 19 | Devon Energy Production Company, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 20 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 21 | E D Markham | | Gas Operator | Nov 1978 |
| 22 | E. Conway Butts, Inc. | | Oil & Gas Operator | Apr 1991 |
| 23 | Eagle Oil & Gas, Inc. | | Oil & Gas Operator | Nov 1984 |
| 24 | Earl Markham Et Al | | Gas Operator | Jun 1979 |
| 25 | Ensight Energy Management, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2005 |
| 26 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 27 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Feb 2026 |
| 28 | Frank Spooner | | Oil & Gas Operator | Mar 1984 |
| 29 | Gas Transportation Corporation | | Oil & Gas Operator | Aug 1995 |
| 30 | Genmar Oil & Gas, Inc. | | Oil & Gas Operator | May 1986 |
| 31 | Haddox Petroleum Corp | | Gas Operator | Dec 2010 |
| 32 | Harvey Broyles | | Oil & Gas Operator | May 2012 |
| 33 | Harvey Broyles, Et Al | | Gas Operator | Nov 1985 |
| 34 | Hogan Drilling Company, Inc. | | Oil & Gas Operator | Mar 1981 |
| 35 | Hogan Exploration, Inc. | | Oil & Gas Operator | Mar 2000 |
| 36 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 37 | Jackie D Nelson | | Oil & Gas Operator | Sep 1983 |
| 38 | James C. Storm | | Gas Operator | Oct 1991 |
| 39 | James Drilling Co., Inc. | | Oil & Gas Operator | Dec 2024 |
| 40 | Jim V. Haddox | | Gas Operator | Dec 2010 |
| 41 | John O. Clay | | Gas Operator | May 1979 |
| 42 | John O. Clay Exploration, Inc. | | Oil & Gas Operator | Apr 2005 |
| 43 | JSB, LLC | | Oil & Gas Operator | Dec 2024 |
| 44 | Justiss Oil Company, Inc. | Jena, LA 71342 | Oil & Gas Operator | Nov 2025 |
| 45 | Justiss-Mears Oil Co. | | Oil & Gas Operator | Feb 1981 |
| 46 | Keystone Exploration, Inc | College Sta, TX 77845 | Oil & Gas Operator | Feb 2026 |
| 47 | Kmi Continental Off. Prod. Co. | | Oil & Gas Operator | Jan 1988 |
| 48 | L. R. Resources II | | Oil & Gas Operator | Feb 1991 |
| 49 | Leroy W. & Charlie G. James | | Gas Operator | Oct 1979 |
| 50 | Leroy W. James | | Oil & Gas Operator | Oct 1991 |
| 51 | Lyons Petroleum, Inc. | | Oil & Gas Operator | Oct 1988 |
| 52 | M. W. Maxwell | | Oil & Gas Operator | Apr 1990 |
| 53 | Maddox Oil & Gas | | Gas Operator | Jun 1982 |
| 54 | Mark V Petroleum Company | | Oil & Gas Operator | Feb 2020 |
| 55 | Markham Enterprises Inc | | Oil & Gas Operator | May 1981 |
| 56 | Marlin Exploration, Inc. | | Oil & Gas Operator | Oct 2006 |
| 57 | MBM Partnership | | Gas Operator | Nov 1991 |
| 58 | McRae Exploration, Inc. | | Oil & Gas Operator | Mar 1984 |
| 59 | Mid South Oil & Gas Expl Inc | | Oil & Gas Operator | Jan 1992 |
| 60 | Miles Oil & Gas Co. | | Oil & Gas Operator | Feb 1988 |
| 61 | Osr Oil & Gas Corp | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 62 | P E Trichel | | Gas Operator | May 1980 |
| 63 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 64 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Feb 2026 |
| 65 | Primary Energy Co. | | Gas Operator | Jul 1999 |
| 66 | Quiet Sun Investments, Inc. | | Oil & Gas Operator | Sep 2012 |
| 67 | Ransom Horne,Jr. | | Oil & Gas Operator | Dec 1991 |
| 68 | Riley Exploration, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Feb 2026 |
| 69 | Rosamond Drilling Co., Inc. | | Gas Operator | Nov 1984 |
| 70 | Samson Contour Energy E&P, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2017 |
| 71 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 72 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 73 | Saye Petroleum, Inc. | | Oil & Gas Operator | Apr 1995 |
| 74 | Shell Oil Co. | Houston, TX 77001 | Oil & Gas Operator | Jun 1985 |
| 75 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 76 | Slapco - Emerald Exploration | | Gas Operator | Sep 1979 |
| 77 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 78 | South La. Production Co., Inc. | | Oil & Gas Operator | Jun 1982 |
| 79 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 80 | Spirit Petroleum Company | | Oil & Gas Operator | Apr 1999 |
| 81 | Spooner Petroleum Company | | Oil & Gas Operator | Dec 2025 |
| 82 | Stenco | | Oil & Gas Operator | Apr 1994 |
| 83 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 84 | Texas Gas Transmission Corp. | | Oil Operator | Aug 2003 |
| 85 | Texas Gas Transmission, LLC | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2024 |
| 86 | The Maurice L. Brown Company | | Oil & Gas Operator | Aug 1987 |
| 87 | Thomas Turman | | Oil & Gas Operator | Dec 1991 |
| 88 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 89 | Trichel Contracting Company | | Oil & Gas Operator | Sep 1987 |
| 90 | Trident Oil & Gas Corp. | | Oil & Gas Operator | Sep 2000 |
| 91 | Vista Investments | | Gas Operator | Nov 1998 |
| 92 | Wayne J. Spears | | Oil & Gas Operator | Sep 2005 |
| 93 | Wicker Oil Co | | Oil & Gas Operator | Feb 1992 |
| 94 | Wicker, La. Cent. & Clovelly | | Gas Operator | Jul 1983 |
| 95 | Witt Oil Production, Inc. | | Oil & Gas Operator | Nov 1984 |
| 96 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |