| 1 | 2 S Operating | Iowa Park, TX 76367 | Oil Operator | Sep 2018 |
| 2 | 4-B | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2009 |
| 3 | 4-J Oil Co. | Ryan, OK 73565 | Oil & Gas Operator | Mar 2009 |
| 4 | 4J Oil Co. LLC | Ryan, OK 73565 | Oil Operator | Feb 2026 |
| 5 | 5 G Resources, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 6 | A & F Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Jan 2025 |
| 7 | A-E Operating Committee | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1996 |
| 8 | A.D.A. Oil Co | Iowa Park, TX 76367 | Oil Operator | Aug 2003 |
| 9 | Aba Oil LLC | Burkburnett, TX 76354 | Oil Operator | Feb 2026 |
| 10 | Abb Oil Co., Inc. | Wichita Falls, TX 76310 | Oil & Gas Operator | Feb 2026 |
| 11 | Acadia Oil Company | Wichita Falls, TX 76309 | Oil & Gas Operator | Sep 2007 |
| 12 | Acadia Oil, LLC | Wichita Falls, TX 76310 | Oil Operator | Feb 2026 |
| 13 | Adair Resources Inc. | Ennis, TX 75120 | Oil & Gas Operator | Apr 2018 |
| 14 | Agave Operating Company, Inc. | Holliday, TX 76366 | Oil Operator | Feb 2026 |
| 15 | Ak Operating Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 16 | Akins Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 17 | Alco Oil & Gas Co. LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 18 | Alexander, Stanley | Electra, TX 76360 | Oil & Gas Operator | May 2016 |
| 19 | Alfaro Oil & Gas | Burkburnett, TX 76354 | Oil & Gas Operator | Feb 2026 |
| 20 | Alfaro Production LLC | Burkburnett, TX 76354 | Oil Operator | Feb 2026 |
| 21 | Altex Resources, Inc. | Carney, OK 74832 | Oil & Gas Operator | Mar 2015 |
| 22 | Amen Oil LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 23 | American Eagle Operating LLC | Gainesville, TX 76240 | Oil Operator | Feb 2026 |
| 24 | American Eagle Operating, Inc. | Spring, TX 77386 | Oil Operator | Aug 2010 |
| 25 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Feb 2026 |
| 26 | Ampak Oil Company | Plano, TX 75074 | Oil & Gas Operator | Feb 2026 |
| 27 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
| 28 | Aramco Petroleum LLC | Burkburnett, TX 76354 | Oil Operator | Feb 2026 |
| 29 | Arcooil Corp | San Antonio, TX 78205 | Oil & Gas Operator | Feb 2026 |
| 30 | Aries Operating, LP | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 31 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 32 | Armour Properties | Houston, TX 77056 | Oil & Gas Operator | May 1994 |
| 33 | Armour, Widd | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 34 | Associated Operating & Explor. | Dallas, TX 75243 | Oil & Gas Operator | Feb 2026 |
| 35 | Atapco | Houston, TX 77040 | Oil & Gas Operator | Feb 1999 |
| 36 | Athena Resources, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Feb 2026 |
| 37 | Atkinson, Jim | Nocona, TX 76255 | Oil & Gas Operator | Feb 2026 |
| 38 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |
| 39 | Austin, Dewey | Burkburnett, TX 76354 | Oil & Gas Operator | Nov 1996 |
| 40 | Ayres, Joe D. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2004 |
| 41 | Aztec Energy, LLC | Wichita Falls, TX 76301 | Oil Operator | Feb 2026 |
| 42 | Azteca Operating, Inc. | Electra, TX 76360 | Oil Operator | Feb 2026 |
| 43 | Aztel Operating Inc. | Windthorst, TX 76389 | Oil Operator | Oct 2003 |
| 44 | B And M Production | Burkburnett, TX 76354 | Oil Operator | Feb 2026 |
| 45 | B.E.G. Production | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 46 | Bales, D. F. & M. L. | Burkburnett, TX 76354 | Oil & Gas Operator | Feb 2026 |
| 47 | Bar H Production, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1997 |
| 48 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 49 | Beeson Energy, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Feb 2026 |
| 50 | Beisch, Larry | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 51 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 52 | Bentley Oil & Gas Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 53 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 54 | Beth Ann Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Jul 2001 |
| 55 | Big Country Pipe & Supply, Inc. | Saint Jo, TX 76265 | Oil Operator | May 2023 |
| 56 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 57 | Big Sandy Oil Inc. | Manchaca, TX 78652 | Oil & Gas Operator | Aug 2003 |
| 58 | Birdwell, Mike Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Jun 2012 |
| 59 | Birge Oil Co. | Wichita Falls, TX 76302 | Oil & Gas Operator | Jun 1995 |
| 60 | Black Jack Oil Co Inc | Holliday, TX 76366 | Oil & Gas Operator | Dec 2025 |
| 61 | Black Pearl Operating Comp., LLC | Houston, TX 77057 | Oil Operator | Feb 2026 |
| 62 | Bledsco, Inc. | Holliday, TX 76366 | Oil Operator | Feb 2010 |
| 63 | BMBD Enterprises, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 64 | Bohner Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 65 | Bonfire Operating LLC | Cresson, TX 76035 | Oil & Gas Operator | Feb 2026 |
| 66 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Feb 2026 |
| 67 | Bradberry Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Sep 2013 |
| 68 | Brahman Operating LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 69 | Brandt, Bodie | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 70 | Bray-Conn Resources, LLC | Wichita Falls, TX 76307 | Oil Operator | Dec 2011 |
| 71 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 72 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 73 | Briggs & Croker Oil, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 74 | Brightman Family Trust | Graham, TX 76450 | Oil & Gas Operator | Dec 2009 |
| 75 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 76 | Brock & Strange | Holliday, TX 76366 | Oil & Gas Operator | May 2008 |
| 77 | Brock, Joe Wayne | N Richlnd HLS, TX 76180 | Oil & Gas Operator | Feb 2010 |
| 78 | Brock, Leo Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 79 | Brown & Fox | Iowa Park, TX 76367 | Oil & Gas Operator | Aug 2003 |
| 80 | Brown, Leon | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2005 |
| 81 | Brown, Toss H. | Lubbock, TX 79408 | Oil & Gas Operator | Aug 2003 |
| 82 | Brumbelow, Ronny L. | Wichita Falls, TX 76306 | Oil & Gas Operator | Oct 2004 |
| 83 | Bto Venture, Inc. | Wichita Falls, TX 76309 | Oil & Gas Operator | Nov 2012 |
| 84 | Bud'S Drilling Company, Inc. | Brookshire, TX 77423 | Oil & Gas Operator | Feb 2026 |
| 85 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 86 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 87 | Burleson Oil Company | Burkburnett, TX 76354 | Oil Operator | Feb 2026 |
| 88 | Cal-Tex Operating Co. | Manchaca, TX 78652 | Oil & Gas Operator | May 2020 |
| 89 | Calima Energy LLC | Electra, TX 76360 | Oil Operator | Oct 2025 |
| 90 | Canan Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 91 | Canyon Ridge Energy LLC | Iowa Park, TX 76367 | Oil Operator | Nov 2024 |
| 92 | Capps, R. Oil Corp. | Midland, TX 79704 | Oil & Gas Operator | Oct 2002 |
| 93 | Cardinal Energy Company | Rowlett, TX 75088 | Oil & Gas Operator | Feb 2026 |
| 94 | Caribou Operating Co. | Granbury, TX 76048 | Oil & Gas Operator | Mar 2010 |
| 95 | Caribou Operating, Inc. | Granbury, TX 76048 | Oil & Gas Operator | Feb 2026 |
| 96 | Carroll, Alvis J. | Wichita Falls, TX 76302 | Oil & Gas Operator | Mar 2008 |
| 97 | Case Oil | Burkburnett, TX 76354 | Oil & Gas Operator | Feb 2026 |
| 98 | Case, C. W. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 99 | Catlin Drilling Company | Iowa Park, TX 76367 | Oil & Gas Operator | Aug 2003 |
| 100 | Catlin, Carl | Jacksboro, TX 76458 | Oil & Gas Operator | Mar 2008 |