| 1 | 1978 Investments LLC | Cushing, OK 74023 | Oil & Gas Operator | Nov 2025 |
| 2 | 3 BC Co Inc | Cushing, OK 74023-1268 | Oil & Gas Operator | Mar 2022 |
| 3 | A & B Oil & Gas Properties Inc | Sapulpa, OK 74067-0217 | Oil & Gas Operator | Apr 2011 |
| 4 | A & M Oilfield Sup Inc | | Oil & Gas Operator | Aug 1999 |
| 5 | A J Oil And Gas | Oilton, OK 74052-0112 | Oil & Gas Operator | Jun 2012 |
| 6 | A S B Oil & Gas Exploration LLC | Sand Springs, OK 74063-1508 | Oil & Gas Operator | Nov 2021 |
| 7 | A-1 Oil Operators | Beggs, OK 74421-0329 | Oil & Gas Operator | Jan 2013 |
| 8 | Abercrombie A L Inc | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 9 | Ablaze Drilling Company | Garland, TX 75044-2912 | Oil & Gas Operator | Aug 2013 |
| 10 | Ackley Earl H & Glenora Trust | Cushing, OK 74023-5230 | Oil & Gas Operator | Mar 2015 |
| 11 | Action Petroleum Service Corp | Ardmore, OK 73401 | Oil Operator | Oct 2025 |
| 12 | Ada Energy Exploration And Production LLC | Ada, OK 74820-0867 | Oil Operator | Oct 2025 |
| 13 | Adams Evertte | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 14 | Adams Res & Energy Co | Houston, TX 77001-0844 | Oil & Gas Operator | Mar 2015 |
| 15 | Advance Oil Corporation | Kiefer, OK 74041-4105 | Oil & Gas Operator | Nov 2025 |
| 16 | Aei Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 17 | Agape Inc | Broken Arrow, OK 74011-4256 | Oil & Gas Operator | Sep 2025 |
| 18 | Agate Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2015 |
| 19 | Ailey A C | Stroud, OK 74079-9209 | Oil & Gas Operator | Nov 2021 |
| 20 | Ajb Oil LLC | Tulsa, OK 74114-5218 | Oil Operator | Oct 2025 |
| 21 | Akin Jr Verna M & Emsley F | Maud, OK 74854 | Oil & Gas Operator | Apr 2002 |
| 22 | Alamo Resources Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 23 | Alexander, Milt M | | Oil Operator | Mar 2015 |
| 24 | Allen J W Revocable Trust | Tulsa, OK 74101-0411 | Oil Operator | Nov 1998 |
| 25 | Allen Kent | Okemah, OK 74859-9700 | Oil Operator | Aug 2025 |
| 26 | Allen Michael | Broken Arrow, OK 74014-2239 | Oil & Gas Operator | Aug 2025 |
| 27 | Allenergy Operating Co Inc | Coffeyville, KS 67337-6653 | Oil & Gas Operator | Mar 2015 |
| 28 | Allied Petroleum Inc | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Jun 2014 |
| 29 | Alpha Petro Development Inc | Tulsa, OK 74136-7048 | Oil & Gas Operator | May 2013 |
| 30 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Dec 2025 |
| 31 | Amax Petroleum Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2012 |
| 32 | American Capital Corporation | San Marcos, CA 92069 | Oil & Gas Operator | Sep 2014 |
| 33 | American Domestic MGMT Inc | Tulsa, OK 74155 | Oil & Gas Operator | Apr 2015 |
| 34 | American Petroleum & Environmental Consultants Inc | Edmond, OK 73013-8801 | Oil & Gas Operator | Oct 2025 |
| 35 | Americo Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2012 |
| 36 | Andrea Operating Company | Edmond, OK 73013-6627 | Oil & Gas Operator | May 2025 |
| 37 | Andress Bill O | Tulsa, OK 74135-3553 | Oil & Gas Operator | Sep 2003 |
| 38 | Aog Operating LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Oct 2025 |
| 39 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2025 |
| 40 | Apache Energy Resources Corp. | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 41 | Arrow Production Company | Tulsa, OK 74108 | Oil & Gas Operator | Dec 2009 |
| 42 | Asher Tip Corporation | Fairfax, OK 74637-0308 | Oil & Gas Operator | Nov 2003 |
| 43 | Ashley Jim Company (The) | Broken Arrow, OK 74012 | Oil Operator | Jun 2025 |
| 44 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 45 | Assiduous Energy LLC | Edmond, OK 73034 | Oil & Gas Operator | Nov 2025 |
| 46 | Associated Petro Invest Inc | Stillwater, OK 74076-2346 | Oil & Gas Operator | May 2013 |
| 47 | Atchley Resources, Inc. | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2025 |
| 48 | Athan Inc | Edmond, OK 73013-6628 | Oil & Gas Operator | Nov 2025 |
| 49 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 50 | Autumn Exploration LTD | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2015 |
| 51 | Avondale Operating Co | Tulsa, OK 74145-7627 | Oil & Gas Operator | Apr 2019 |
| 52 | Axem Resources Inc | Denver, CO 80202-4617 | Oil & Gas Operator | Jul 2013 |
| 53 | Ayluma Operating Inc | Dewar, OK 74437 | Oil & Gas Operator | Oct 2024 |
| 54 | Azar Marsha | Chicago, IL 60618 | Oil Operator | Jan 2025 |
| 55 | Azure Energy LTD | Tulsa, OK 74135-7825 | Oil & Gas Operator | Nov 2025 |
| 56 | B & D Oil Inc | Bristow, OK 74010-2801 | Oil & Gas Operator | Feb 2017 |
| 57 | B & G Oil & Gas Co | Bartlesville, OK 74006 | Oil & Gas Operator | Dec 2000 |
| 58 | B & P Oil & Gas | Oilton, OK 74052-0296 | Oil & Gas Operator | Dec 2021 |
| 59 | B & W Production | Bristow, OK 74010 | Oil Operator | May 1994 |
| 60 | B P Energy | | Oil & Gas Operator | Apr 2015 |
| 61 | Baber Oil Company LLC | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 62 | Baca Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2000 |
| 63 | Bahan Er Testamentary Trust | Fort Worth, TX 76116-5731 | Oil & Gas Operator | Apr 2014 |
| 64 | Bailey David A | Mounds, OK 74047 | Oil & Gas Operator | Oct 2025 |
| 65 | Bailey Michael L & Pamela D Dba MPB Oil & Gas | Paden, OK 74860-9789 | Oil & Gas Operator | Nov 2025 |
| 66 | Bailey Petroleum Corporation | Oklahoma City, OK 73159-7652 | Oil & Gas Operator | Feb 2004 |
| 67 | Bailey Richard Leon | Paden, OK 74860-7152 | Oil & Gas Operator | Nov 2025 |
| 68 | Baldrachi Oil Properties LLC | Bartlesville, OK 74006-1622 | Oil Operator | Oct 2025 |
| 69 | Baldridge, Doug | | Oil & Gas Operator | Jul 2018 |
| 70 | Bamsaw Oil Inc | Sapulpa, OK 74067 | Oil Operator | Dec 1993 |
| 71 | Bank Oil Services | Muskogee, OK 74403-4025 | Oil & Gas Operator | Mar 2020 |
| 72 | Bannon Operating Inc | Houston, TX 77068 | Oil & Gas Operator | Sep 2003 |
| 73 | Barden/Bass Oil & Gas Exploration Company Inc | Terrell, TX 75160-3143 | Oil Operator | Oct 2025 |
| 74 | Barnes Darrell | Drumright, OK 74030-5879 | Oil & Gas Operator | Oct 2025 |
| 75 | Barnett Darrell | Bristow, OK 74010-4926 | Oil Operator | Jan 2019 |
| 76 | Barnett James E | Skiatook, OK 74070-0100 | Oil & Gas Operator | May 2013 |
| 77 | Barta Enterprises | Oklahoma City, OK 73162-1728 | Oil & Gas Operator | Oct 2025 |
| 78 | Barton Edward Lee | Mounds, OK 74047-4177 | Oil Operator | Oct 2025 |
| 79 | Baruch Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 80 | Baugh Allan L | Drumright, OK 74030-5914 | Oil & Gas Operator | Oct 2025 |
| 81 | BD Operating LLC | Artesia, NM 88210 | Oil & Gas Operator | Nov 2025 |
| 82 | Beach Operating Company | Tulsa, OK 74136-5577 | Oil & Gas Operator | Mar 2013 |
| 83 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 84 | Becca Oil LLC | Cushing, OK 74023-1347 | Oil & Gas Operator | Oct 2025 |
| 85 | Bell Supply Co | Kilgore, TX 75662 | Oil & Gas Operator | Jan 2013 |
| 86 | Below Ground Level LLC | Sand Springs, OK 74063 | Oil & Gas Operator | Dec 2025 |
| 87 | Benchmark Crude Inc | Tulsa, OK 74105-5920 | Oil & Gas Operator | Sep 2015 |
| 88 | Ber-Mor Oil Inc | Perry, OK 73077-1212 | Oil & Gas Operator | Jul 2015 |
| 89 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 90 | Berry Operating Company | Stillwater, OK 74076-0518 | Oil & Gas Operator | Dec 2016 |
| 91 | Berry, Thomas N. & Co. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2012 |
| 92 | Bertschinger Oil Company | Oklahoma City, OK 73116-6534 | Oil & Gas Operator | Nov 2015 |
| 93 | Bestmark Production Inc | Yukon, OK 73099 | Oil & Gas Operator | Mar 2011 |
| 94 | Big Four Leasing & Operating Inc | Cushing, OK 74023 | Oil & Gas Operator | Oct 2025 |
| 95 | Big Four Petroleum Company | Cushing, OK 74023 | Oil & Gas Operator | Nov 2004 |
| 96 | Bilbe Operating Company | Sapulpa, OK 74066 | Oil & Gas Operator | Apr 2003 |
| 97 | Bingman J Brian | Sapulpa, OK 74066-1108 | Oil & Gas Operator | May 2013 |
| 98 | Bird Creek Oil Company | Tulsa, OK 74126 | Oil & Gas Operator | Dec 2000 |
| 99 | Bison Petroleum Inc | Tulsa, OK 74137 | Oil & Gas Operator | Nov 2004 |
| 100 | BK Exploration Corporation | Tulsa, OK 74152-009 | Oil & Gas Operator | Mar 2021 |