| 1 | Ac Operating Company LLC | Houston, TX 77024-2851 | Oil Operator | Mar 2025 |
| 2 | Agar & Agar Inc | Norman, OK 73070 | Oil & Gas Operator | Oct 1996 |
| 3 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
| 4 | Atchley Resources, Inc. | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2025 |
| 5 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 6 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 7 | Cal-Tex Operating Co. | Manchaca, TX 78652 | Oil & Gas Operator | May 2020 |
| 8 | Casillas Operating LLC | Tulsa, OK 74103-4060 | Oil & Gas Operator | Mar 2025 |
| 9 | Cassidy Jr John | Stroud, OK 74079-0200 | Oil & Gas Operator | Nov 2014 |
| 10 | Chanze Oil Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 11 | Chisholm Oil And Gas Operating LLC | Tulsa, OK 74103-3522 | Oil & Gas Operator | Feb 2025 |
| 12 | Clark Operating Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 13 | Deka Exploration Inc | Oklahoma City, OK 73113-0057 | Oil & Gas Operator | Nov 2019 |
| 14 | Discover Resources | Norman, OK 73070 | Oil & Gas Operator | Jan 2011 |
| 15 | Discover Resources LLC | Norman, OK 73072-2310 | Oil & Gas Operator | Mar 2025 |
| 16 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 17 | EP Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 18 | Felty Drilling Co. Inc | Burkburnett, TX 76354 | Oil & Gas Operator | May 2025 |
| 19 | Forte Energy Corpration | Houston, TX 77024-1209 | Oil & Gas Operator | Jan 1995 |
| 20 | Fulcrum Exploration, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Feb 2025 |
| 21 | Gladiator Operating LLC | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2025 |
| 22 | GLB Exploration, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 23 | Halcon Holdings Inc | Ada, OK 74820 | Oil & Gas Operator | Nov 2018 |
| 24 | Helton Oil Company | Edmond, OK 73083-7283 | Oil & Gas Operator | Aug 2016 |
| 25 | Henderson Don Inc | Oklahoma City, OK 73134-1753 | Oil & Gas Operator | Aug 2013 |
| 26 | Henderson Fred J | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 2025 |
| 27 | Holden Energy Corporation | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2015 |
| 28 | J & E Energy Company | Oklahoma City, OK 73120-1108 | Oil & Gas Operator | Mar 2015 |
| 29 | J B Energy, Inc. | Denton, TX 76206 | Oil & Gas Operator | Aug 2018 |
| 30 | Kadane Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 1998 |
| 31 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | May 2025 |
| 32 | Kuran Resources Inc | Wichita Falls, TX 76305-2212 | Oil Operator | Jul 2021 |
| 33 | Meadowbrook Oil Corporation Of Ok Inc | Del City, OK 73115-3608 | Oil & Gas Operator | Mar 2025 |
| 34 | Newkumet Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 35 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 36 | Okt Petroleum Company Inc | Oklahoma City, OK 73118-7425 | Oil & Gas Operator | Oct 2013 |
| 37 | Ole Crow Operating | Wichita Falls, TX 76308 | Oil Operator | Feb 2025 |
| 38 | Ovintiv Mid-Continent Inc. | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Mar 2025 |
| 39 | Phoenix Production Inc | Burneyville, OK 73430-2158 | Oil & Gas Operator | Feb 2025 |
| 40 | Prince Brothers Drilling Co | Electra, TX 76360 | Oil & Gas Operator | Apr 2015 |
| 41 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 42 | Red River Petroleum Inc | Tipton, OK 73570-0351 | Oil Operator | Feb 2025 |
| 43 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | May 2025 |
| 44 | Riggins Energy Inc. | Vernon, TX 76385 | Oil & Gas Operator | Jul 2004 |
| 45 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 46 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Mar 2025 |
| 47 | Schmid Properties Inc | Hico, TX 76457 | Oil & Gas Operator | May 2025 |
| 48 | Short W D Revocable Trust | Oxford, KS 67119-0729 | Oil & Gas Operator | Mar 2015 |
| 49 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2025 |
| 50 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 51 | Swanson, Tommy Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Mar 2017 |
| 52 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2025 |
| 53 | Tiger Eye Resources LLC | Hockley, TX 77447-6911 | Oil Operator | Oct 2012 |
| 54 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | May 2025 |
| 55 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 56 | Tritex Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jan 2013 |
| 57 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | May 2025 |
| 58 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | May 2025 |
| 59 | V S Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | May 2025 |
| 60 | Vinson & Clark | Wichita Falls, TX 76308 | Oil Operator | Apr 2015 |
| 61 | Vitol Inc. | Houston, TX 77098 | Oil & Gas Operator | Sep 2023 |
| 62 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Feb 2025 |