| 1 | Abercrombie A L | | Oil & Gas Operator | Nov 1995 |
| 2 | Abercrombie Energy, LLC | Wichita, KS 67212 | Oil & Gas Operator | Jun 2025 |
| 3 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Jun 2025 |
| 4 | Arcadian Resources LLC | Glen Elder, KS 67446 | Oil & Gas Operator | Oct 2025 |
| 5 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 6 | Bickle Energies LLC | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 7 | Black Oak Exploration, LLC | Denver, CO 80210 | Oil & Gas Operator | Jun 2025 |
| 8 | Caerus Washco LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2019 |
| 9 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |
| 10 | Castle Resources | | Oil Operator | Jul 2002 |
| 11 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 12 | Darrah Oil Company LLC | Wichita, KS 67201 | Oil & Gas Operator | Oct 2025 |
| 13 | Downing-Nelson Oil Co Inc | Hays, KS 67601 | Oil & Gas Operator | Jun 2025 |
| 14 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Oct 2025 |
| 15 | H & R Exploratio | | Oil Operator | Feb 1992 |
| 16 | Harvest Energy Company | Englewood, CO 80110 | Oil & Gas Operator | Aug 2001 |
| 17 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jun 2025 |
| 18 | Impetro Nonop LLC | | Oil Operator | Jun 2025 |
| 19 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Oct 2025 |
| 20 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |
| 21 | Lobo Production, Inc | Goodland, KS 67735 | Gas Operator | Jun 2025 |
| 22 | Lockridge, John P | Denver, CO 80202 | Gas Operator | Mar 1999 |
| 23 | M & C Oil Inc | Indianola, NE 68034 | Oil & Gas Operator | Nov 2013 |
| 24 | Mad Operators LLC | | Oil & Gas Operator | Jun 2025 |
| 25 | Marexco, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2025 |
| 26 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 27 | Murfin Drilling Company Inc | Wichita, KS 67202 | Oil & Gas Operator | Aug 2025 |
| 28 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 29 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 30 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 31 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 32 | One Source Financial Services Inc. | McAllen, TX 78501 | Gas Operator | Dec 2019 |
| 33 | Own Resources Operating LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2025 |
| 34 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 35 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Jun 2025 |
| 36 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Jul 2025 |
| 37 | Poe Servicing Inc | Oberlin, KS 67749 | Oil Operator | Oct 2019 |
| 38 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 39 | Priority Oil & Gas LLC | Lakewood, CO 80227 | Gas Operator | Dec 2019 |
| 40 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Jun 2025 |
| 41 | Rockin G. Energy, LLC | Weatherford, TX 76087 | Gas Operator | Sep 2020 |
| 42 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 43 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 44 | Smith Oil & Gas LLC | Livermore, CO 80536 | Gas Operator | Jun 2025 |
| 45 | Snow Oil Company | Nocona, TX 76255 | Oil Operator | Oct 2025 |
| 46 | Strabala Joseph | | Oil Operator | Jan 1992 |
| 47 | Thoroughbred Associates L.L.C. | Wichita, KS 67226 | Oil & Gas Operator | Jun 2025 |
| 48 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |