| 1 | 007 Operating LLC | Sulphur, OK 73086 | Oil & Gas Operator | Jun 2025 |
| 2 | 212 Operating Inc | Byron, OK 73722-9528 | Oil & Gas Operator | Jan 2016 |
| 3 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 4 | A J S Oil Corporation | Oklahoma City, OK 73112-4799 | Oil & Gas Operator | Jul 2004 |
| 5 | A R W Exploration Corp | Stillwater, OK 74076 | Oil & Gas Operator | May 2013 |
| 6 | Aaron Well Service Inc | Enid, OK 73703 | Gas Operator | Jul 2025 |
| 7 | Ac Oil & Gas LLC | Hennessey, OK 73742 | Oil & Gas Operator | Jul 2025 |
| 8 | Adobe Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 9 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 10 | Agate Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2015 |
| 11 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 12 | Allied Petroleum Company | | Gas Operator | Dec 1992 |
| 13 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Oct 2025 |
| 14 | American Energy Recovery Inc | Oklahoma City, OK 73123-0549 | Oil & Gas Operator | Aug 2017 |
| 15 | American Natural Energy Corp | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 2025 |
| 16 | American Trading & Prod Corp | Houston, TX 77040-6471 | Oil & Gas Operator | Nov 2014 |
| 17 | Amplify Oklahoma Operating LLC | Houston, TX 77002-4800 | Oil & Gas Operator | Jun 2025 |
| 18 | Amsler Jerry & Denese | Enid, OK 73703-9300 | Oil & Gas Operator | Jul 2020 |
| 19 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 20 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2025 |
| 21 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 22 | Andrea Operating Company | Edmond, OK 73013-6627 | Oil & Gas Operator | May 2025 |
| 23 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 24 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Jun 2025 |
| 25 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 26 | Armor Energy II LLC | Tulsa, OK 74145 | Oil & Gas Operator | Jul 2025 |
| 27 | Armor Energy LLC | Tulsa, OK 74146 | Oil & Gas Operator | Jun 2022 |
| 28 | Arp Oklahoma LLC | Fort Worth, TX 76102-7426 | Oil & Gas Operator | Feb 2020 |
| 29 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Oct 2025 |
| 30 | Arvine Pipe & Supply Co Inc | Norman, OK 73069-8224 | Oil & Gas Operator | Jul 2015 |
| 31 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 32 | Atchley Resources, Inc. | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
| 33 | Austin Production Company, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Mar 2015 |
| 34 | Avalanche Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2025 |
| 35 | Avra Oil Co | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 36 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Oct 2025 |
| 37 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Oct 2025 |
| 38 | Barr Energy LLC | | Oil Operator | Jun 2010 |
| 39 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 40 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2025 |
| 41 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2025 |
| 42 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2025 |
| 43 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 44 | Beasley Oil Company | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2020 |
| 45 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 46 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Jun 2025 |
| 47 | Below Ground Level LLC | Sand Springs, OK 74063 | Oil & Gas Operator | Oct 2025 |
| 48 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 49 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 50 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 51 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 52 | Blaik Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2009 |
| 53 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Oct 2025 |
| 54 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jul 2025 |
| 55 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 56 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Jun 2025 |
| 57 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Jul 2025 |
| 58 | BMC Petroleum Inc | Enid, OK 73701-2700 | Oil & Gas Operator | Jul 2025 |
| 59 | Bob & Son Oil Company | Hennessey, OK 73742-0578 | Oil & Gas Operator | Jul 2017 |
| 60 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | May 2025 |
| 61 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Jul 2025 |
| 62 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 63 | Bracksieck Lloyd H | Boulder, CO 80303 | Oil & Gas Operator | Feb 2019 |
| 64 | Brady Fred D | Cleveland, OK 74020 | Oil & Gas Operator | Mar 1997 |
| 65 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 66 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Jun 2025 |
| 67 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 68 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 69 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 70 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Jul 2025 |
| 71 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 72 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 73 | Bromar Oil Company | Fairview, OK 73737-0006 | Oil & Gas Operator | Apr 2014 |
| 74 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 75 | Brown Jeff J Dba Brown Service Co | Enid, OK 73701 | Oil & Gas Operator | Jul 2025 |
| 76 | Buck Production Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Sep 2023 |
| 77 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |
| 78 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 79 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 80 | Buttram Operating Company LLC | Heath, TX 75032-1931 | Oil & Gas Operator | May 2025 |
| 81 | BVD Inc | Yates Center, KS 66783-0194 | Oil & Gas Operator | Jul 2025 |
| 82 | C & A Oil Company | Edmond, OK 73013-9413 | Oil & Gas Operator | Mar 2015 |
| 83 | C & D Supply LLC | Cherokee, OK 73728-5817 | Oil & Gas Operator | Jul 2025 |
| 84 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Jun 2025 |
| 85 | C E D LC | Enid, OK 73702-0326 | Oil & Gas Operator | Oct 2021 |
| 86 | C&D Supply | Cherokee, OK 73728-5817 | Oil & Gas Operator | Jun 2025 |
| 87 | C.D. Operating Company, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 88 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
| 89 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Jul 2025 |
| 90 | Canyon Creek Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 91 | Carbon Economy LLC | Chickasha, OK 73023 | Oil & Gas Operator | Jul 2025 |
| 92 | Carl Humphries Inc | Piedmont, OK 73078-0514 | Oil & Gas Operator | Jul 2025 |
| 93 | Carmen Field LP | Tulsa, OK 74135 | Oil & Gas Operator | Mar 2008 |
| 94 | Castle Exploration Company Inc | Blue Bell, PA 19422 | Oil & Gas Operator | May 2018 |
| 95 | Cates Betty J | Tulsa, OK 74112 | Oil & Gas Operator | Nov 2016 |
| 96 | Caulkins Oil Company | Aztec, NM 87410 | Oil & Gas Operator | Oct 2024 |
| 97 | Cayman Resources Corporation | Tulsa, OK 74119-1323 | Oil & Gas Operator | Jun 2001 |
| 98 | Ceja Corporation | Tulsa, OK 74172 | Oil & Gas Operator | Jul 2025 |
| 99 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Aug 2025 |
| 100 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Jul 2025 |