| 1 | 3R Oil Corporation | Healdton, OK 73438-0306 | Oil Operator | Apr 2022 |
| 2 | 4D'S Operating Co LLC (The) | Ratliff City, OK 73481 | Oil & Gas Operator | Mar 2025 |
| 3 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Mar 2025 |
| 4 | A L Jones Revocable Trust | Wilson, OK 73463-7316 | Oil Operator | Jul 2013 |
| 5 | Abarr Trust (The) | Oklahoma City, OK 73179 | Oil & Gas Operator | Mar 2025 |
| 6 | Abercrombie, A. L., Inc | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 7 | Action Petroleum Service Corp | Ardmore, OK 73401 | Oil Operator | Jan 2025 |
| 8 | Aei Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 9 | Aeternum Energy, LLC | Nederland, TX 77627 | Oil & Gas Operator | May 2025 |
| 10 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 11 | Afo LLC | Velma, OK 73491 | Oil & Gas Operator | Dec 2024 |
| 12 | Agate Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2015 |
| 13 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 14 | Allen Michael | Broken Arrow, OK 74014-2239 | Oil & Gas Operator | Feb 2025 |
| 15 | Allen Oil & Gas LLC | Ardmore, OK 73401 | Oil Operator | Aug 2022 |
| 16 | Alligator Rock Well Service LLC | Loco, OK 73442 | Oil & Gas Operator | Mar 2025 |
| 17 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | May 2025 |
| 18 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 19 | American Natural Energy Corp | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 2025 |
| 20 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | May 2025 |
| 21 | Americana Energy Inc | Byng, OK 74820 | Oil & Gas Operator | Feb 2025 |
| 22 | Amsito Oil Company LLC | Denton, TX 76206-0689 | Oil Operator | Apr 2001 |
| 23 | An-Son Corporation | Oklahoma City, OK 73124 | Oil & Gas Operator | Jan 2006 |
| 24 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 25 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 26 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Mar 2025 |
| 27 | Antero Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 28 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 29 | Apache Energy Resources Corp | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 30 | Apple Petroleum Corp | Mountainside, NJ 7092 | Oil Operator | Mar 2013 |
| 31 | Arbuckle Enterprises, Inc. | Edmond, OK 73083 | Oil & Gas Operator | Feb 2025 |
| 32 | Arcotex Oil & Gas Inc | Gainesville, TX 76241-1357 | Oil & Gas Operator | Mar 2025 |
| 33 | Ardmore Production & Exploration Co | Ardmore, OK 73401 | Oil & Gas Operator | Feb 2025 |
| 34 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 35 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 36 | Arrow Energy, Incorporated | Houston, TX 77008 | Oil & Gas Operator | Mar 2025 |
| 37 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | May 2025 |
| 38 | Arrow Operating Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2024 |
| 39 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 40 | Avalon Exploration Inc | Tulsa, OK 74119-5401 | Oil & Gas Operator | Dec 2019 |
| 41 | Avalon Operating LLC | Tulsa, OK 74119-5401 | Oil & Gas Operator | Mar 2025 |
| 42 | Aycox Robert D | Healdton, OK 73438 | Oil Operator | Sep 2022 |
| 43 | B & B Oil | Lyons, KS 67554 | Oil Operator | Aug 2024 |
| 44 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2025 |
| 45 | B & K Partnership | Burleson, TX 76028 | Oil Operator | Oct 2024 |
| 46 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Mar 2025 |
| 47 | B B R Oil Corporation | Norman, OK 73069 | Oil & Gas Operator | Feb 2025 |
| 48 | B H & T Oil Company Inc | Purcell, OK 73080-3010 | Oil & Gas Operator | Dec 2000 |
| 49 | B R Polk Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2025 |
| 50 | B. & L. Oil Company | Seguin, TX 78155 | Oil & Gas Operator | May 2025 |
| 51 | Baca Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2000 |
| 52 | Bakin Oil & Gas Inc | | Oil & Gas Operator | Apr 2020 |
| 53 | Balco Energy Inc | Duncan, OK 73533 | Oil & Gas Operator | Mar 2025 |
| 54 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Feb 2025 |
| 55 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2025 |
| 56 | Bargo Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2014 |
| 57 | Barnes Producing Company LLC | Ardmore, OK 73401-8882 | Oil Operator | Feb 2025 |
| 58 | Barr Energy LLC | | Oil Operator | Jun 2010 |
| 59 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 60 | Baruch-Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 61 | Bayou Oil LLC | Ardmore, OK 73401 | Oil & Gas Operator | Feb 2025 |
| 62 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2025 |
| 63 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2025 |
| 64 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 65 | Belco Development Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 1994 |
| 66 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 67 | Bend Petroleum Corp. | Muenster, TX 76252 | Oil & Gas Operator | Nov 2023 |
| 68 | Bentley & Laing | Wichita Falls, TX 76302 | Oil & Gas Operator | Feb 2002 |
| 69 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Apr 2025 |
| 70 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | May 2025 |
| 71 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 72 | Biggs, Laura L | | Oil & Gas Operator | Jul 2019 |
| 73 | Billy Judd Investment Company | Ardmore, OK 73401-1095 | Oil & Gas Operator | Feb 2025 |
| 74 | Black Lava Operating LLC | | Oil & Gas Operator | Feb 2025 |
| 75 | Black Mesa Energy LLC | Tulsa, OK 74103-4334 | Oil & Gas Operator | Feb 2025 |
| 76 | Blackwell Exploration & Development LLC | Dallas, TX 75252-5637 | Oil & Gas Operator | Jan 2024 |
| 77 | Blue Cedar Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 78 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | May 2025 |
| 79 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2025 |
| 80 | Bo-MC Operating Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Mar 2018 |
| 81 | Bo-MC Resources Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Apr 2005 |
| 82 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Mar 2025 |
| 83 | Bossa Alan Dba The Land Company | Ringling, OK 73456-2088 | Oil & Gas Operator | Mar 2025 |
| 84 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 85 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 86 | Bradmar Petroleum Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 87 | Brady Energy Investments LLC | Healdton, OK 73438-0788 | Oil & Gas Operator | Feb 2025 |
| 88 | Brady William H | Healdton, OK 73438-0788 | Oil & Gas Operator | Mar 2025 |
| 89 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 90 | Bravo Natural Resources, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 91 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 92 | Brenneis Energy | Duncan, OK 73533-5415 | Oil & Gas Operator | Feb 2025 |
| 93 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Feb 2025 |
| 94 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 95 | Brocon Inc | Healdton, OK 73438 | Oil & Gas Operator | May 2020 |
| 96 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | May 2025 |
| 97 | Brown & Brown Production Inc | Ratliff City, OK 73481 | Oil & Gas Operator | Feb 2025 |
| 98 | Brown Vernon L & Bonita | Cleveland, OK 74020-4426 | Oil & Gas Operator | Apr 2009 |
| 99 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2025 |
| 100 | Bullard Don W | Ardmore, OK 73401-3646 | Oil & Gas Operator | Dec 2019 |