| 1 | 4feathers Production LLC | Maysville, OK 73057 | Oil & Gas Operator | Oct 2025 |
| 2 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Nov 2025 |
| 3 | A & H Disposal Inc | Lindsay, OK 73052-0456 | Oil & Gas Operator | Jul 2019 |
| 4 | Abps Energy Inc | Chickasha, OK 73023-1658 | Oil & Gas Operator | Apr 2015 |
| 5 | Ac Oil & Gas LLC | Hennessey, OK 73742 | Oil & Gas Operator | Nov 2025 |
| 6 | Acoma Oil Corporation | Saint Paul, MN 55102 | Oil & Gas Operator | Dec 2025 |
| 7 | Adeco Energy Corporation | Norman, OK 73071 | Oil & Gas Operator | Apr 2014 |
| 8 | Adobe Oil & Gas Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 1993 |
| 9 | Adobe Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 10 | Aei Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 11 | Aethon I LP | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 12 | Agar & Agar Inc | Norman, OK 73070 | Oil & Gas Operator | Oct 1996 |
| 13 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 14 | Alpine Inc | Oklahoma City, OK 73134-2504 | Oil & Gas Operator | Feb 2024 |
| 15 | Alsup 1-19 LLC | Lindsay, OK 73052 | Oil Operator | Oct 2025 |
| 16 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Dec 2025 |
| 17 | Alvarado 2014 LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 18 | Amax Oil & Gas Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 19 | Amer-Tex Energy Inc | Oklahoma City, OK 73116-9037 | Oil & Gas Operator | Feb 2012 |
| 20 | Amerac Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2013 |
| 21 | American Energy Operations Inc | Houston, TX 77002 | Oil & Gas Operator | Nov 1992 |
| 22 | American Petrofina Co Of TX | Dallas, TX 75221-2159 | Oil & Gas Operator | Nov 2000 |
| 23 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 24 | American Trading & Prod Corp | Houston, TX 77040-6471 | Oil & Gas Operator | Nov 2014 |
| 25 | Americo Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2012 |
| 26 | An-Son Corp | Oklahoma City, OK 73124 | Oil & Gas Operator | Jan 2006 |
| 27 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 28 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2025 |
| 29 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Nov 2025 |
| 30 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 31 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 32 | Anson Company | Oklahoma City, OK 73124 | Oil & Gas Operator | Apr 2018 |
| 33 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2025 |
| 34 | Apache Energy Resources Corp. | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 35 | Arbuckle Enterprises Inc | Edmond, OK 73083 | Oil & Gas Operator | Oct 2025 |
| 36 | Ardent Energy LLC | Edmond, OK 73083 | Oil & Gas Operator | Dec 2025 |
| 37 | Argent Energy (Us) Holdings Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Sep 2021 |
| 38 | Aries Operating, LP | Houston, TX 77042 | Oil & Gas Operator | Dec 2025 |
| 39 | Arkana Operating Company Inc | Fort Worth, TX 76116-5707 | Oil & Gas Operator | Jul 2008 |
| 40 | Arkoma Operations LLC | Tulsa, OK 74114-3502 | Oil & Gas Operator | Oct 2025 |
| 41 | Arkoma Resources LLC | Henryetta, OK 74437 | Oil & Gas Operator | Nov 2025 |
| 42 | Aroc (Texas) Inc. | Houston, TX 77090 | Oil & Gas Operator | Dec 2014 |
| 43 | Arrow Energy, Incorporated | Houston, TX 77008 | Oil & Gas Operator | Nov 2025 |
| 44 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 2025 |
| 45 | Arrow Operating Company | Dallas, TX 75231 | Oil & Gas Operator | Nov 2025 |
| 46 | Arrowhead Energy Inc | Edmond, OK 73013 | Oil & Gas Operator | Nov 2025 |
| 47 | Arvine Pipe & Supply Co Inc | Norman, OK 73069-8224 | Oil & Gas Operator | Jul 2015 |
| 48 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 49 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2025 |
| 50 | Atchley Resources, Inc. | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2025 |
| 51 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 52 | Atwell, David L. | Duncan, OK 73533 | Oil & Gas Operator | Jul 2003 |
| 53 | Austin Production Company, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Mar 2015 |
| 54 | Azure Energy LTD | Tulsa, OK 74135-7825 | Oil & Gas Operator | Nov 2025 |
| 55 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | Dec 2025 |
| 56 | B & B Tool Company Inc | Lindsay, OK 73052 | Oil & Gas Operator | Oct 2025 |
| 57 | B & C Drilling Company Inc | Holdenville, OK 74848-0961 | Oil & Gas Operator | Mar 2000 |
| 58 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2025 |
| 59 | B H & T Oil Company Inc | Purcell, OK 73080-3010 | Oil & Gas Operator | Dec 2000 |
| 60 | B R Polk Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 2025 |
| 61 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2025 |
| 62 | Barr Energy LLC | | Oil Operator | Jun 2010 |
| 63 | Barta Enterprises | Oklahoma City, OK 73162-1728 | Oil & Gas Operator | Oct 2025 |
| 64 | Baruch Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 65 | Baseline Operating, LLC | Edmond, OK 73013-0000 | Oil & Gas Operator | Nov 2025 |
| 66 | Basin Operating Services II LLC | Oklahoma City, OK 73106-5615 | Oil & Gas Operator | Oct 2025 |
| 67 | Basin Operating Services LLC | Oklahoma City, OK 73106-5615 | Oil & Gas Operator | Oct 2025 |
| 68 | Baxter And Associates Inc | Ada, OK 74820 | Oil & Gas Operator | Oct 2025 |
| 69 | Bays Exploration Inc | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Oct 2025 |
| 70 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 71 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 72 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2025 |
| 73 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 74 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 75 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 76 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 77 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 78 | Bent Twig Operating Corporation | Oklahoma City, OK 73143-4716 | Oil & Gas Operator | Mar 2015 |
| 79 | Beta Operating Company, LLC | Houston, TX 77210 | Oil & Gas Operator | Apr 2020 |
| 80 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 81 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 82 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 83 | Billy Matthews Production LLC | Dover, OK 73734 | Oil & Gas Operator | Nov 2025 |
| 84 | Bird Oil & Gas Inc | Yukon, OK 73099-2827 | Oil & Gas Operator | Jan 2023 |
| 85 | Bison Energy Corporation | Wichita, KS 67206 | Oil & Gas Operator | Mar 2022 |
| 86 | Blackfire Operating LLC | Oklahoma City, OK 73116-4223 | Oil & Gas Operator | Nov 2025 |
| 87 | Blue Cedar Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | Nov 2025 |
| 88 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Nov 2025 |
| 89 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2025 |
| 90 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Dec 2025 |
| 91 | Blue Water Solutions LLC | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Nov 2025 |
| 92 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Oct 2025 |
| 93 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Oct 2025 |
| 94 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Sep 2025 |
| 95 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Nov 2025 |
| 96 | Boone And Boone Oil Co | Perry, OK 73077 | Oil & Gas Operator | Mar 2008 |
| 97 | Borrowed Resources LLC | Edmond, OK 73025 | Oil & Gas Operator | Oct 2025 |
| 98 | Box Energy Company | Dallas, TX 75244 | Oil & Gas Operator | Jun 2003 |
| 99 | Boyle Phillip Inc | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 100 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2025 |