| 1 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Mar 2025 |
| 2 | A H & L Operating Company Inc | Norman, OK 73070-4084 | Oil & Gas Operator | Apr 2015 |
| 3 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 4 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 5 | Antero Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 6 | Arapahoe Resources LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2025 |
| 7 | Arbor Petroleum Corporation | Oklahoma City, OK 73102-4003 | Oil & Gas Operator | Mar 2011 |
| 8 | Archibald Oil & Gas Operating Inc | Ada, OK 74820 | Oil & Gas Operator | Mar 2025 |
| 9 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 10 | Arkla Energy Resources | Shreveport, LA 71151 | Oil & Gas Operator | Mar 2015 |
| 11 | Arkoma Holding Corporation | Oklahoma City, OK 73102-5684 | Gas Operator | Jul 2007 |
| 12 | Arkoma Resources LLC | Henryetta, OK 74437 | Oil & Gas Operator | Mar 2025 |
| 13 | Arrow Energy, Incorporated | Houston, TX 77008 | Oil & Gas Operator | Mar 2025 |
| 14 | Arrow Operating Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2024 |
| 15 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 16 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 17 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2025 |
| 18 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 19 | Bee Cee Inc | Denton, TX 76206-0689 | Oil & Gas Operator | May 2013 |
| 20 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 21 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 22 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 23 | Billy Jack Sharber Operating LLC | Seminole, OK 74868 | Oil & Gas Operator | Feb 2025 |
| 24 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | May 2025 |
| 25 | Blanchard Henry | Tupelo, OK 74572 | Oil & Gas Operator | Mar 2023 |
| 26 | Blue Bear Energy LLC | Coalgate, OK 74538-3898 | Gas Operator | Mar 2025 |
| 27 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 28 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |
| 29 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2025 |
| 30 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Feb 2025 |
| 31 | Bostex Operating Company | Nocona, TX 76255 | Oil Operator | Mar 2025 |
| 32 | Boswell Energy Corp. | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 33 | Boyle Philip Inc | Norman, OK 73072-6913 | Oil & Gas Operator | Jun 1999 |
| 34 | Boyle Phillip Inc | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 35 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 36 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Feb 2025 |
| 37 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 38 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 39 | Brown L C Company | Ada, OK 74820-7916 | Oil & Gas Operator | Nov 2021 |
| 40 | Buntin Ronnie | Maramec, OK 74045-4500 | Oil & Gas Operator | Sep 2019 |
| 41 | Canyon Creek Energy Arkoma LLC | Tulsa, OK 74120-3017 | Oil & Gas Operator | Feb 2025 |
| 42 | Canyon Creek Energy Operating LLC | Tulsa, OK 74120 | Oil & Gas Operator | Feb 2025 |
| 43 | Carl E Gungoll Exploration Inc | Oklahoma City, OK 73154-0466 | Oil & Gas Operator | Jan 2016 |
| 44 | Carl E Gungoll Exploration LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2025 |
| 45 | Carver Harry | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 2000 |
| 46 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2025 |
| 47 | Chapman Energy Oklahoma, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 48 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2025 |
| 49 | Chica Oil Company | Lago VIsta, TX 78645-6561 | Oil & Gas Operator | Mar 2001 |
| 50 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 51 | Coal Oil & Gas Company | Ada, OK 74820 | Oil & Gas Operator | Mar 2025 |
| 52 | Cola Resources LLC | Houston, TX 77019-5639 | Gas Operator | Nov 2015 |
| 53 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 54 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | May 2025 |
| 55 | Command Energy Operating LLC | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2025 |
| 56 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 57 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 58 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 59 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | May 2025 |
| 60 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | May 2025 |
| 61 | Corterra Energy Operating LLC | Tulsa, OK 74119-4844 | Oil & Gas Operator | Aug 2021 |
| 62 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2025 |
| 63 | D-Mil Production Inc | Argyle, TX 76226 | Oil & Gas Operator | May 2025 |
| 64 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Feb 2025 |
| 65 | Deka Exploration Inc | Oklahoma City, OK 73113-0057 | Oil & Gas Operator | Nov 2019 |
| 66 | Delta D Operations | Wilson, OK 73463 | Oil & Gas Operator | Jul 2014 |
| 67 | Delta D Operations Inc | Ardmore, OK 73401-8678 | Oil & Gas Operator | Apr 2014 |
| 68 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2025 |
| 69 | DLB Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | May 2025 |
| 70 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2025 |
| 71 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Oct 2024 |
| 72 | Draco Production Company | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2012 |
| 73 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 74 | Elite Tank Trucks, Inc | | Oil & Gas Operator | Mar 2025 |
| 75 | Enable Gas Transmission LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 76 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2025 |
| 77 | Eott Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 1995 |
| 78 | Esco Exploration, Inc | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 79 | Exoko Operating Company Inc | Tulsa, OK 74170-0246 | Oil & Gas Operator | Jan 2006 |
| 80 | Fairway Resources Operating III LLC | Houston, TX 77002-2728 | Oil & Gas Operator | Feb 2025 |
| 81 | Focus Energy, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2019 |
| 82 | Formor Operating Inc | Tyler, TX 75701 | Oil & Gas Operator | May 2013 |
| 83 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2025 |
| 84 | Freedom Operating Company LLC | Tulsa, OK 74136-6834 | Oil & Gas Operator | Mar 2025 |
| 85 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 86 | GLB Exploration, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 87 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2025 |
| 88 | Gomaco Inc | Tulsa, OK 74103-5061 | Oil & Gas Operator | Apr 2015 |
| 89 | Gomaco Operating Company | Tulsa, OK 74115 | Oil & Gas Operator | Mar 2025 |
| 90 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 91 | Grayhorse Operating Inc | Tulsa, OK 74103-4439 | Oil & Gas Operator | Feb 2025 |
| 92 | Grayrock Energy, LLC | Nichols Hills, OK 73116-5113 | Oil & Gas Operator | Feb 2025 |
| 93 | Green Operating Company, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2025 |
| 94 | Grizzly Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 95 | Gugli Corporation | Byng, OK 74820 | Oil & Gas Operator | Sep 2014 |
| 96 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2025 |
| 97 | H2ox Operating LLC | Tulsa, OK 74103 | Oil Operator | Feb 2025 |
| 98 | Harken Exploration Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2008 |
| 99 | Harrison Oil & Gas Inc | Houston, TX 77019 | Oil & Gas Operator | Jan 2025 |
| 100 | Harrod Leasing | Edmond, OK 73034 | Oil & Gas Operator | Feb 2025 |