| 1 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2 | 4D'S Operating Co LLC (The) | Ratliff City, OK 73481 | Oil & Gas Operator | Mar 2025 |
| 3 | 51 Production Inc | | Oil & Gas Operator | Jan 2013 |
| 4 | A & T Oil Company | Midland, TX 79707 | Oil & Gas Operator | Sep 2008 |
| 5 | A S B Oil & Gas Exploration LLC | Sand Springs, OK 74063-1508 | Oil & Gas Operator | Nov 2021 |
| 6 | ABC Oil & Gas | Morris, OK 74445-0273 | Oil & Gas Operator | Feb 2025 |
| 7 | Ablaze Drilling Company | Garland, TX 75044-2912 | Oil & Gas Operator | Aug 2013 |
| 8 | Ackley Earl H & Glenora Trust | Cushing, OK 74023-5230 | Oil & Gas Operator | Mar 2015 |
| 9 | Acott, Melvin E | | Oil Operator | Aug 2014 |
| 10 | Agate Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2015 |
| 11 | Aladdin Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2021 |
| 12 | Alamo Resources Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 13 | Alexander, Howard | Tulsa, OK 74114 | Oil & Gas Operator | Feb 1996 |
| 14 | Alexander-Loop Oil Prop. Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Nov 1998 |
| 15 | Allen & Allen Oil Co | | Oil Operator | Dec 2024 |
| 16 | Allen Richard R | Bartlesville, OK 74005 | Oil Operator | Aug 1999 |
| 17 | Allison Tom & Shelly Dba T & S Oil Company | Bartlesville, OK 74006-0722 | Oil & Gas Operator | Aug 2024 |
| 18 | Alpha Oil Company | | Oil Operator | Jul 2004 |
| 19 | Alpha Petro Development Inc | Tulsa, OK 74136-7048 | Oil & Gas Operator | May 2013 |
| 20 | Alpine Inc | Oklahoma City, OK 73134-2504 | Oil & Gas Operator | Feb 2024 |
| 21 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | May 2025 |
| 22 | American Energy LLC | Lake Zurich, IL 60047-0129 | Oil & Gas Operator | Nov 2014 |
| 23 | American Int'L Energy Corp. | Houston, TX 77057 | Oil & Gas Operator | Aug 2019 |
| 24 | Ammons, Dean E | | Oil Operator | Jan 2021 |
| 25 | Amvest Osage Inc | Skiatook, OK 74070-0970 | Oil & Gas Operator | Feb 2025 |
| 26 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Mar 2025 |
| 27 | Anderson T Maxwell | Tulsa, OK 74136-0653 | Oil & Gas Operator | Dec 2013 |
| 28 | Andrea Operating Company | Edmond, OK 73013-6627 | Oil & Gas Operator | Jan 2025 |
| 29 | Apache PHN North America, Inc. | | Oil & Gas Operator | Mar 2005 |
| 30 | Arapaho Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Nov 1998 |
| 31 | Arbuckle Enterprises, Inc. | Edmond, OK 73083 | Oil & Gas Operator | Feb 2025 |
| 32 | Arcana Energy Corp Inc | Bartlesville, OK 74006 | Oil Operator | May 2017 |
| 33 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 34 | Arnold N Krebbs | | Oil Operator | Feb 2025 |
| 35 | Asher Tip Corporation | Fairfax, OK 74637-0308 | Oil & Gas Operator | Nov 2003 |
| 36 | Ashlock Thomas J | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2015 |
| 37 | Atkinson WM H Estate | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2001 |
| 38 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 39 | Austex Energy, Inc. | Granbury, TX 76048 | Oil & Gas Operator | Apr 1993 |
| 40 | Aztec Exploration Inc | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2013 |
| 41 | B & B Resources, Inc | Somerset, KY 42501 | Oil & Gas Operator | Dec 2019 |
| 42 | B B R Oil Corporation | Norman, OK 73069 | Oil & Gas Operator | Feb 2025 |
| 43 | B P Energy | | Oil & Gas Operator | Apr 2015 |
| 44 | Baccarat Oil LTD | Denver, CO 80223 | Oil Operator | Jan 2001 |
| 45 | Bakin Oil & Gas Inc | | Oil & Gas Operator | Apr 2020 |
| 46 | Baldridge, Doug | | Oil & Gas Operator | Jul 2018 |
| 47 | Bamsaw Oil Inc | Sapulpa, OK 74067 | Oil Operator | Dec 1993 |
| 48 | Bandolier Energy LLC | | Oil & Gas Operator | Mar 2020 |
| 49 | Bandwheel Production Co LLC | | Oil Operator | Feb 2025 |
| 50 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Feb 2025 |
| 51 | Barbee, Bill J. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 1994 |
| 52 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2025 |
| 53 | Barnard, Roy A | Cleveland, OK 74020-4403 | Oil Operator | Feb 2025 |
| 54 | Barnes Exploration Co. | Nashville, TN 37209 | Oil & Gas Operator | Feb 1995 |
| 55 | Barnett James E | Skiatook, OK 74070-0100 | Oil & Gas Operator | May 2013 |
| 56 | Barnett John | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2025 |
| 57 | Becca Oil LLC | Cushing, OK 74023-1347 | Oil & Gas Operator | Feb 2025 |
| 58 | Becktol Linda G | Morris, OK 74445 | Oil & Gas Operator | Feb 2025 |
| 59 | Behlen Incorporated | | Oil Operator | Jun 2001 |
| 60 | Belcor Inc. | Irvine, CA 92714 | Oil & Gas Operator | Nov 2000 |
| 61 | Belport Oil, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2025 |
| 62 | Benson Mineral Group Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 63 | Benton Energy Corporation | | Oil & Gas Operator | Mar 2024 |
| 64 | Benton Oil & Gas Co | Oxnard, CA 93030 | Oil Operator | Nov 1998 |
| 65 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | May 2025 |
| 66 | Bets Oil & Gas | Pawhuska, OK 74056 | Oil & Gas Operator | Nov 2018 |
| 67 | BFS Petroleum Company | Skiatook, OK 74070-3998 | Oil & Gas Operator | Jan 2004 |
| 68 | Bgi Resources LLC | | Oil & Gas Operator | Feb 2025 |
| 69 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 70 | Big Bend Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Jan 2025 |
| 71 | Big Four Petroleum Company | Cushing, OK 74023 | Oil & Gas Operator | Nov 2004 |
| 72 | Bird Creek Resources Inc | Tulsa, OK 74121 | Oil & Gas Operator | Jul 2022 |
| 73 | Black Dot Oil Inc | Skiatook, OK 74070 | Oil & Gas Operator | Feb 2025 |
| 74 | Black Lava Operating LLC | | Oil & Gas Operator | Feb 2025 |
| 75 | Blackjack Oak Production,LLC | | Oil Operator | Feb 2025 |
| 76 | Blackjack Oil LTD | Denver, CO 80223 | Oil Operator | May 1996 |
| 77 | Bledsoe Petro Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2000 |
| 78 | Bluehawk Properties Inc | Riverside, CA 92517-1045 | Oil & Gas Operator | Dec 2016 |
| 79 | Boje Oil Company LLC | | Oil & Gas Operator | Feb 2025 |
| 80 | Bolen, Michael D | | Oil & Gas Operator | Feb 2025 |
| 81 | Boness, Mona | | Oil Operator | Mar 2015 |
| 82 | Booth John H Inc | Tulsa, OK 74170 | Oil Operator | Sep 2019 |
| 83 | Boradi Petroleum Corporation | Oklahoma City, OK 73102 | Oil Operator | Nov 1998 |
| 84 | Boyle Philip Inc | Norman, OK 73072-6913 | Oil & Gas Operator | Jun 1999 |
| 85 | Boyle Phillip Inc | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 86 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 87 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Jan 2025 |
| 88 | Brady Brothers | Cushing, OK 74023 | Oil Operator | Apr 2014 |
| 89 | Braley, William R. | Gage, OK 73843 | Oil & Gas Operator | Jul 2004 |
| 90 | Bratco Inc | Dewey, OK 74029-0279 | Oil & Gas Operator | Feb 2025 |
| 91 | Bratco Operating Company | Dewey, OK 74029 | Oil & Gas Operator | Mar 2025 |
| 92 | Bright Oil & Gas Inc R E Osage Only | | Oil & Gas Operator | Nov 2012 |
| 93 | Brooks Oil & Gas Inc | Sun Prairie, WI 53590 | Oil & Gas Operator | May 2013 |
| 94 | Brooks Oil Company | Kilgore, TX 75662 | Oil & Gas Operator | May 2025 |
| 95 | Brown Alan L | Pawhuska, OK 74056 | Oil & Gas Operator | Dec 2024 |
| 96 | Brown Curt Operating Company | Tulsa, OK 74105 | Oil Operator | Nov 1998 |
| 97 | Brown Don J | Cleveland, OK 74020 | Oil & Gas Operator | Mar 2014 |
| 98 | Brown L S | Hominy, OK 74035 | Oil & Gas Operator | Sep 2024 |
| 99 | Brown, Jo Ann Dahl | | Oil & Gas Operator | Jun 2004 |
| 100 | Brown, Perry B | | Oil & Gas Operator | Apr 2024 |