| 1 | M & T Production Company LLC | Tulsa, OK 74132-3742 | Oil Operator | Apr 2011 |
| 2 | Mac Laskey Kelly Oilfield | El Dorado, KS 67042 | Oil & Gas Operator | Feb 2024 |
| 3 | Maggard Joe | Mannford, OK 74044-9610 | Oil & Gas Operator | May 2023 |
| 4 | Maggard VIrginia J | Mannford, OK 74044-3027 | Oil Operator | Jan 2024 |
| 5 | Mantex Inc | Tulsa, OK 74114-6234 | Oil & Gas Operator | Mar 2015 |
| 6 | Mark Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2018 |
| 7 | Mason, Tommy L | | Oil & Gas Operator | May 2013 |
| 8 | Matherly Elaine | Bristow, OK 74010-9536 | Oil Operator | Mar 2015 |
| 9 | Mayabb Oil Company Inc | Tulsa, OK 74105-5158 | Oil & Gas Operator | Jan 2024 |
| 10 | Mayhar N D | Eufaula, OK 74432 | Oil Operator | Apr 2015 |
| 11 | McChesney Michael & Ayo Joseph R | | Oil Operator | Nov 2019 |
| 12 | McCutchin Alma Estate | Dallas, TX 75380 | Oil & Gas Operator | May 2013 |
| 13 | McGinley Jr, John R | | Gas Operator | Nov 1998 |
| 14 | McGonigal Dan L | | Oil & Gas Operator | Oct 2023 |
| 15 | McGonigal Donald T | Tulsa, OK 74114-2145 | Oil & Gas Operator | Jul 2004 |
| 16 | McGonigal Ted W | Norman, OK 73072-3037 | Oil & Gas Operator | Dec 2023 |
| 17 | Meadors Jr J W Trust | Bixby, OK 74008-0151 | Oil & Gas Operator | Aug 2013 |
| 18 | Mendell Petroleum Corporation | Castle Rock, CO 80104-9045 | Oil & Gas Operator | Sep 2004 |
| 19 | Mid-Con Central Expl Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2014 |
| 20 | Mid-Con Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2024 |
| 21 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 22 | Mikarden Energy Inc | | Oil Operator | Dec 2023 |
| 23 | Miller-McGee Operating Inc | Stroud, OK 74079-0754 | Oil & Gas Operator | Feb 2024 |
| 24 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 25 | Monexco Operating Company | Dallas, TX 75204-2634 | Oil & Gas Operator | Jan 2024 |
| 26 | Moore Lynn D | Collinsville, OK 74021 | Oil Operator | Aug 2013 |
| 27 | Moore Oil And Gas | Burleson, TX 76028 | Oil & Gas Operator | May 2024 |
| 28 | Moore Richard L | Morris, OK 74445 | Oil Operator | Aug 2013 |
| 29 | Morris Ed Dba Morris Operating Company | Mounds, OK 74047-4801 | Oil & Gas Operator | Feb 2024 |
| 30 | Morrison Oil Company | Bartlesville, OK 74005-1059 | Oil Operator | Mar 2015 |
| 31 | MRD Nowata LLC | | Oil Operator | Aug 2017 |
| 32 | MSB Operating Company | Enid, OK 73703 | Oil & Gas Operator | Jan 2005 |
| 33 | Mud Operations Inc | Ames, OK 73718-9501 | Oil & Gas Operator | Feb 2024 |
| 34 | Munson, David M. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 35 | Murphy Helen Colpitt Trust | Collinsville, OK 74021-0128 | Oil & Gas Operator | May 2002 |
| 36 | Murphy Jack L | Tulsa, OK 74104-4915 | Oil Operator | Mar 2015 |