| 1 | Barline Oil, LLC | Wichita, KS 67206 | Oil Operator | Nov 2019 |
| 2 | Bennett & Schulte Oil Co., A General Partnership | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 3 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | May 2025 |
| 4 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | May 2025 |
| 5 | Bruce Oil Company, L.L.C. | McPherson, KS 67460 | Oil Operator | Jan 2025 |
| 6 | Brungardt Oil And Leasing Inc. | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 7 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | Dec 2024 |
| 8 | C & S Oil Company, LLC | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 9 | Carmen Schmitt, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jan 2025 |
| 10 | Chesney Oil Comp | | Oil Operator | Sep 1989 |
| 11 | Condor Energy Inc | Great Bend, KS 67530 | Oil & Gas Operator | Oct 2021 |
| 12 | Darrah Oil Company LLC | Wichita, KS 67201 | Oil & Gas Operator | May 2025 |
| 13 | Double Eagle Exploration Inc | Windthorst, TX 76389 | Oil Operator | Jan 2025 |
| 14 | Dreiling Oil Inc | Hays, KS 67601 | Oil Operator | Jun 2018 |
| 15 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Jan 2025 |
| 16 | Farmer, John O., Inc. | Russell, KS 67665 | Oil & Gas Operator | Jan 2025 |
| 17 | Farris Well Service | | Oil & Gas Operator | Dec 2021 |
| 18 | Foster Oil LLC | | Oil Operator | Jan 2025 |
| 19 | Frontier Oil Com | | Oil & Gas Operator | May 1995 |
| 20 | G L M Company | | Oil Operator | Jan 2025 |
| 21 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 22 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 23 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 24 | John Roy Evans Oil Company LLC | Claflin, KS 67525 | Oil Operator | Jan 2025 |
| 25 | Karst Don Well S | | Oil Operator | Oct 1990 |
| 26 | Legacy Energy LLC | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 27 | M G Oil Inc | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 28 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Jan 2025 |
| 29 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 30 | Murfin Drilling Company Inc | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 31 | Petroleum Manage | | Oil & Gas Operator | Oct 1994 |
| 32 | Pioneer Operations, LLC | Hays, KS 67601 | Oil Operator | Jan 2025 |
| 33 | R.H.S. Oil Company | | Oil Operator | Nov 2009 |
| 34 | Rains & Williams | | Oil & Gas Operator | Nov 1995 |
| 35 | Rains And Williamson Oil Co. | Wichita, KS 67277 | Oil & Gas Operator | Jan 2025 |
| 36 | Royal Drilling Inc | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 37 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Jan 2025 |
| 38 | Scheck Oil Operation | | Oil & Gas Operator | Jan 2025 |
| 39 | Shields Oil Producers Inc. | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 40 | Stull Oil LLC | Natoma, KS 67651 | Oil Operator | Jan 2025 |
| 41 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Apr 2024 |
| 42 | The Bill Bowman Oil Company | | Oil Operator | Jan 2025 |
| 43 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 44 | W&W Oil Co | Denver City, TX 79323 | Oil Operator | Jun 2002 |
| 45 | Waddell, Eric F. | Natoma, KS 67651 | Oil Operator | Aug 1995 |
| 46 | Weigel Oil Company, LLC | Gorham, KS 67640 | Oil Operator | Jan 2025 |
| 47 | Woodman & Iannitti Oil Company | Great Bend, KS 67530 | Oil & Gas Operator | Jan 2003 |