| 1 | 1978 Investments LLC | Cushing, OK 74023 | Oil & Gas Operator | Apr 2025 |
| 2 | 3 BC Co Inc | Cushing, OK 74023-1268 | Oil & Gas Operator | Mar 2022 |
| 3 | A S B Oil & Gas Exploration LLC | Sand Springs, OK 74063-1508 | Oil & Gas Operator | Nov 2021 |
| 4 | Abercrombie, A. L., Inc | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 5 | Advance Oil Corporation | Kiefer, OK 74041-4105 | Oil & Gas Operator | Apr 2025 |
| 6 | Allen Michael | Broken Arrow, OK 74014-2239 | Oil & Gas Operator | Apr 2025 |
| 7 | Almac Engineering | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2007 |
| 8 | American Domestic MGMT Inc | Tulsa, OK 74155 | Oil & Gas Operator | Apr 2015 |
| 9 | Amvest Osage Inc | Skiatook, OK 74070-0970 | Oil & Gas Operator | Apr 2025 |
| 10 | Arrow Production Co. | Tulsa, OK 74108 | Oil & Gas Operator | Dec 2009 |
| 11 | Ashley, Jim Company | Broken Arrow, OK 74012 | Oil Operator | Feb 2025 |
| 12 | Aspire Exploration LLC | Cleveland, OK 74020-0727 | Oil & Gas Operator | Feb 2015 |
| 13 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 14 | Avant Jack E | Skiatook, OK 74070 | Oil Operator | Jan 2013 |
| 15 | B & H Exploration Company | Talala, OK 74080 | Oil & Gas Operator | Dec 2000 |
| 16 | Bailey David A | Mounds, OK 74047 | Oil & Gas Operator | Apr 2025 |
| 17 | Bailey Lorene Estate Of | Fort Collins, CO 80525 | Oil Operator | Feb 2012 |
| 18 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil & Gas Operator | Jan 2025 |
| 19 | Baldridge, Doug | | Oil & Gas Operator | Jul 2018 |
| 20 | Barnett James E | Skiatook, OK 74070-0100 | Oil & Gas Operator | May 2013 |
| 21 | Barnett John | Skiatook, OK 74070 | Oil & Gas Operator | Apr 2025 |
| 22 | Barta Enterprises | Oklahoma City, OK 73162-1728 | Oil & Gas Operator | Apr 2025 |
| 23 | BD Operating LLC | Artesia, NM 88210 | Oil & Gas Operator | May 2025 |
| 24 | Belport Oil, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2025 |
| 25 | Bennd Oil Company | Adams, TN 37010-8002 | Oil Operator | Apr 2025 |
| 26 | Bird Creek Oil Company | Tulsa, OK 74126 | Oil & Gas Operator | Dec 2000 |
| 27 | Bird Creek Resources Inc | Tulsa, OK 74121 | Oil & Gas Operator | Jul 2022 |
| 28 | Black Dot Oil Inc | Skiatook, OK 74070 | Oil & Gas Operator | Apr 2025 |
| 29 | Bo-MC Resources Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Apr 2005 |
| 30 | Bollinger Oil Co | Tulsa, OK 74105 | Oil Operator | Aug 2018 |
| 31 | Boone And Boone Oil Co | Perry, OK 73077 | Oil & Gas Operator | Mar 2008 |
| 32 | Brandenburg R P | Oklahoma City, OK 73139 | Oil & Gas Operator | Jun 2006 |
| 33 | Briscoe Land Development Inc | Geary, OK 73040 | Oil Operator | May 2013 |
| 34 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 35 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 36 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2025 |
| 37 | Brown Brothers | Texhoma, OK 73949 | Oil & Gas Operator | Apr 2025 |
| 38 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | May 2025 |
| 39 | Bud'S Oil Company Inc. | Sperry, OK 74073 | Oil & Gas Operator | Dec 2025 |
| 40 | Burt Esther M | Sperry, OK 74073 | Oil Operator | Apr 2025 |
| 41 | Burt James & Charles Maybee | Sperry, OK 74073-8001 | Oil & Gas Operator | Nov 2014 |
| 42 | C B Energy Resources | Bartlesville, OK 74006 | Oil & Gas Operator | Mar 2015 |
| 43 | C Rose Oil Co. | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 44 | Calumet Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2019 |
| 45 | Calvert Operating LLC | Oklahoma City, OK 73118 | Oil Operator | May 2025 |
| 46 | Cane Creek Energy Partners Inc | Morris, OK 74445 | Oil & Gas Operator | Apr 2025 |
| 47 | Cannon Operating Company LLC | Garland, TX 75043 | Oil Operator | Jul 2025 |
| 48 | Cannuck Resources Inc | Nowata, OK 74048 | Oil & Gas Operator | Aug 2000 |
| 49 | Canok International Inc | Okmulgee, OK 74447 | Oil & Gas Operator | May 2025 |
| 50 | Capmac Inc | Tulsa, OK 74105-7119 | Oil & Gas Operator | Jan 2007 |
| 51 | Cartledge & Cartledge Oil Company Inc | Kiefer, OK 74041 | Oil & Gas Operator | May 2025 |
| 52 | Cartledge Energy LLC | Sapulpa, OK 74066-6623 | Oil & Gas Operator | May 2025 |
| 53 | Cason William J | Santee, CA 92071-2765 | Oil Operator | Sep 2019 |
| 54 | Casselman Leases LLC | Morris, OK 74445-2509 | Oil & Gas Operator | Apr 2025 |
| 55 | Ceja Corporation | Tulsa, OK 74172 | Oil & Gas Operator | Apr 2025 |
| 56 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2025 |
| 57 | Century Petroleum | Nowata, OK 74048 | Oil & Gas Operator | Dec 2000 |
| 58 | Cep Mid-Continent LLC | Skiatook, OK 74070 | Oil & Gas Operator | Apr 2025 |
| 59 | Chambers & Hendrix Oil & Gas | Skiatook, OK 74070-0726 | Oil & Gas Operator | Aug 2022 |
| 60 | Chapman Jim | Bristow, OK 74010-1173 | Oil Operator | Apr 2021 |
| 61 | Cherokee Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 62 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 63 | Circle K Oil & Gas Inc | Sand Springs, OK 74063 | Oil & Gas Operator | Apr 2025 |
| 64 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Jul 2025 |
| 65 | Claborn Julia | Okmulgee, OK 74447-9781 | Oil & Gas Operator | Mar 2022 |
| 66 | Clark Well Service | Depew, OK 74028-0296 | Oil & Gas Operator | Aug 2013 |
| 67 | CMT Operating LLC | Cleveland, OK 74020-0113 | Oil & Gas Operator | Mar 2015 |
| 68 | Coe Production Company | Talala, OK 74080-0264 | Oil & Gas Operator | Aug 2015 |
| 69 | Colorado Gas Compression Inc | Longmont, CO 80501-5868 | Oil & Gas Operator | Aug 2013 |
| 70 | Colpitt Brothers Oil | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2020 |
| 71 | Colpitt Brothers Operating Co | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2025 |
| 72 | Colpitt C H Drilling Co LLC | Collinsville, OK 74021-7107 | Oil Operator | Apr 2025 |
| 73 | Colpitt Chas H Drilling Co | Collinsville, OK 74021-7105 | Oil & Gas Operator | Mar 2012 |
| 74 | Condrin Oil 1985-A LTD | Tulsa, OK 74136 | Oil & Gas Operator | Nov 1998 |
| 75 | Conklin Robert L Dba Conklin Oil LLC | Tulsa, OK 74153 | Oil Operator | Apr 2025 |
| 76 | Consolidated Peto Equity LTD | La Crescenta, CA 91214 | Oil & Gas Operator | Dec 1996 |
| 77 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 78 | Continental Energy Operating LLC | Tulsa, OK 74114-1302 | Oil & Gas Operator | May 2025 |
| 79 | Continental Oil & Refining Co | Catoosa, OK 74015-0831 | Oil & Gas Operator | Nov 2024 |
| 80 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Jul 2025 |
| 81 | Corbell Wayne L | Fort Worth, TX 76111-4615 | Oil & Gas Operator | Apr 2023 |
| 82 | Cornelius Petroleum Inc | | Oil & Gas Operator | May 2025 |
| 83 | Corwin, B. V. | Enid, OK 73701 | Oil & Gas Operator | Apr 2017 |
| 84 | Cotton County Ventures | Estes Park, CO 80517 | Oil Operator | Nov 2003 |
| 85 | Couch Fred J | Broken Arrow, OK 74012 | Oil Operator | Mar 2010 |
| 86 | Coyote N E LLC | Martin, TN 38237-3309 | Oil Operator | Apr 2025 |
| 87 | Crasco Oil Company | Tulsa, OK 74120 | Oil Operator | Nov 1998 |
| 88 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 89 | Cross Timbers Production Co | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 2005 |
| 90 | Crow Oil LLC | Tulsa, OK 74133-2914 | Oil & Gas Operator | Sep 2019 |
| 91 | Crude Resources | Sapulpa, OK 74066 | Oil & Gas Operator | Mar 2008 |
| 92 | Cummings Gene | | Oil Operator | Dec 2000 |
| 93 | Cummings Oil Company | Oklahoma City, OK 73112-6113 | Oil & Gas Operator | May 2025 |
| 94 | Cummins Wren Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Nov 1998 |
| 95 | D & D Oil Company | Dayton, TX 77535 | Oil & Gas Operator | Jul 2025 |
| 96 | D & L Operating LLC | Morris, OK 74445 | Oil & Gas Operator | Apr 2025 |
| 97 | Data Energy Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jul 2018 |
| 98 | Davis & Davis Oil Properties Inc | Morris, OK 74445 | Oil Operator | Apr 2025 |
| 99 | Davis Consulting LLC | Tulsa, OK 74104 | Oil Operator | Apr 2024 |
| 100 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Apr 2025 |