| 1 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2 | 4G Operating LLC | Kinta, OK 74552 | Gas Operator | Feb 2025 |
| 3 | Aaron Arnold B | Sulphur, OK 73086-6853 | Oil & Gas Operator | May 2004 |
| 4 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | May 2025 |
| 5 | Abundance Energy I LLC | Tulsa, OK 74114 | Gas Operator | Feb 2025 |
| 6 | Abundance Energy Services LLC | Tulsa, OK 74114 | Gas Operator | Mar 2025 |
| 7 | Adams Evertte | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 8 | Agate Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2015 |
| 9 | Agave Energy, Inc | Stigler, OK 74462 | Oil & Gas Operator | Feb 2025 |
| 10 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 11 | An-Son Corporation | Oklahoma City, OK 73124 | Oil & Gas Operator | Jan 2006 |
| 12 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 13 | Anc Investments LLC | Enid, OK 73701-1823 | Gas Operator | Feb 2025 |
| 14 | Anderson Floyd Melton Revocable Trust | Yukon, OK 73099 | Oil & Gas Operator | Oct 2024 |
| 15 | Anjet Petroleum Company Inc | Gulfport, MS 39507-1301 | Oil & Gas Operator | Aug 2017 |
| 16 | Apc Operating Partnership LP | Tulsa, OK 74136-4224 | Oil & Gas Operator | Jun 2015 |
| 17 | Arkana Operating Company, Inc | Fort Worth, TX 76116-5707 | Oil & Gas Operator | Jul 2008 |
| 18 | Arkla Energy Resources | Shreveport, LA 71151 | Oil & Gas Operator | Mar 2015 |
| 19 | Arkoma Holding Corporation | Oklahoma City, OK 73102-5684 | Gas Operator | Jul 2007 |
| 20 | Arkoma Operations LLC | Tulsa, OK 74114-3502 | Oil & Gas Operator | Feb 2025 |
| 21 | Arkoma Production Company | Shreveport, LA 71101 | Gas Operator | Apr 2020 |
| 22 | Arkoma Resources LLC | Henryetta, OK 74437 | Oil & Gas Operator | Mar 2025 |
| 23 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 24 | Atls Production Company LLC | Fort Worth, TX 76102-7426 | Gas Operator | Sep 2020 |
| 25 | Baber Oil Co., LLC | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 26 | Bagby Energy LLC | Fort Smith, AR 72913 | Gas Operator | Apr 2010 |
| 27 | BDB LLC | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2017 |
| 28 | Bear Productions Inc | Kinta, OK 74552 | Oil & Gas Operator | Feb 2025 |
| 29 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 30 | Bergen Floyd | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 31 | Berry Operating Company | Stillwater, OK 74076-0518 | Oil & Gas Operator | Dec 2016 |
| 32 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 33 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 34 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 35 | Big Bend Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Jan 2025 |
| 36 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2025 |
| 37 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | May 2025 |
| 38 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |
| 39 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Mar 2025 |
| 40 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Mar 2025 |
| 41 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2025 |
| 42 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Feb 2025 |
| 43 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 44 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Feb 2025 |
| 45 | Bravo Natural Resources, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 46 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Feb 2025 |
| 47 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 48 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 49 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Mar 2025 |
| 50 | Briar Oil & Gas - Oklahoma 1 LLC | Houston, TX 77027-9392 | Oil & Gas Operator | Feb 2025 |
| 51 | Bridger Petroleum Corp | | Oil & Gas Operator | Oct 1999 |
| 52 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 53 | Brooken Production Company LLC | Tulsa, OK 74170-1354 | Gas Operator | Sep 2024 |
| 54 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 55 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | Mar 2025 |
| 56 | Bta Energy LLC | Kinta, OK 74552-3132 | Gas Operator | Feb 2025 |
| 57 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 58 | Cain Randy A | Duncan, OK 73533 | Oil & Gas Operator | Mar 2025 |
| 59 | Canaan Resources X LLC | Oklahoma City, OK 73103-4925 | Oil & Gas Operator | Sep 2024 |
| 60 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2025 |
| 61 | Carbon Economy LLC | Chickasha, OK 73023 | Oil & Gas Operator | Mar 2025 |
| 62 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 63 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2025 |
| 64 | Cherokee Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 65 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2025 |
| 66 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 67 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2025 |
| 68 | Choctaw Gas Company | Quinton, OK 74561 | Gas Operator | Feb 2025 |
| 69 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 70 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
| 71 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2025 |
| 72 | Citrus Energy Corporation | Castle Rock, CO 80104 | Oil & Gas Operator | Mar 2020 |
| 73 | Coaleum Corporation | Dallas, TX 75205 | Oil & Gas Operator | Jan 2001 |
| 74 | Coenergy Operating Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 75 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 76 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 77 | Concorde Resources Corporation | Eufaula, OK 74432 | Oil & Gas Operator | Feb 2025 |
| 78 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 79 | Continental Gas Inc | Enid, OK 73702-5103 | Oil & Gas Operator | Apr 2012 |
| 80 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | May 2025 |
| 81 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 82 | Cordillera Energy Partners, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 83 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 84 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | May 2025 |
| 85 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2025 |
| 86 | D & D Pipe & Equipment Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2005 |
| 87 | D-Pex Operating Company | | Oil & Gas Operator | Sep 2004 |
| 88 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 89 | Daniel Resource Dev Inc | Tomball, TX 77375-8919 | Oil & Gas Operator | Oct 2009 |
| 90 | Daniel-Price Exploration Co | Tulsa, OK 74119 | Gas Operator | Apr 2011 |
| 91 | Davis Operating Company | Elysian Field, TX 75642 | Oil & Gas Operator | May 2025 |
| 92 | Davis, Joe D. | Fort Smith, AR 72903 | Gas Operator | Mar 2015 |
| 93 | Deep Rock LLC | Tulsa, OK 74137-1612 | Gas Operator | Jun 2022 |
| 94 | Derrick Resources Inc. | Henryetta, OK 74437-4249 | Oil & Gas Operator | Feb 2025 |
| 95 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 96 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2025 |
| 97 | Devon Louisiana Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 98 | Dexxon, Inc. | Kiefer, OK 74041 | Oil & Gas Operator | Feb 2025 |
| 99 | Diamond A Inc. | Tulsa, OK 74137 | Oil & Gas Operator | Jun 2001 |
| 100 | Dixie Operating Company | Spring, TX 77379 | Oil & Gas Operator | Dec 2002 |