| 5001 | Hawkbend LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 5002 | Hawkeye Drilling Co. | Waskom, TX 75692 | Oil & Gas Operator | Feb 2023 |
| 5003 | Hawkeye Transmission Company | Dallas, TX 75244 | Oil & Gas Operator | Jun 2000 |
| 5004 | Hawkins Energy Corporation | Austin, TX 78711 | Oil & Gas Operator | Apr 1997 |
| 5005 | Hawkins Oil & Gas Company | Richardson, TX 75080 | Oil & Gas Operator | Feb 2026 |
| 5006 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 5007 | Hawkins Oil, L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2025 |
| 5008 | Hawkins, B. O. | Aspermont, TX 79502 | Oil & Gas Operator | Feb 2026 |
| 5009 | Hawkins, G. A. | Graham, TX 76450 | Oil & Gas Operator | Dec 2013 |
| 5010 | Hawkwood Energy Operating, LLC | Houston, TX 77224 | Oil & Gas Operator | Apr 2022 |
| 5011 | Hawn Bros. & Venus Oil Co. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Aug 1995 |
| 5012 | Hawn Brothers | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2003 |
| 5013 | Hawn Brothers Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jan 2003 |
| 5014 | Hawthorn Energy Partners, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2026 |
| 5015 | Hawthorne Oil And Gas Corp. | Houston, TX 77227 | Oil & Gas Operator | Sep 1993 |
| 5016 | Hay Creek Investments, L.L.C. | Santa Anna, TX 76878 | Oil Operator | Jul 2018 |
| 5017 | Hayabusa Energy USA, LLC | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 5018 | Hayes Oil & Gas Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2003 |
| 5019 | Hayes, Marshall A. III | Chilton, TX 76632 | Oil & Gas Operator | Feb 2026 |
| 5020 | Haylan Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jan 2000 |
| 5021 | Haynes & Shirley Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 5022 | Haynes Production Company, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2006 |
| 5023 | Haynie Drilling Co. Inc. | Corsicana, TX 75151 | Oil & Gas Operator | Dec 2011 |
| 5024 | Haynie Energy Services LLC | Wortham, TX 76693 | Oil Operator | Feb 2026 |
| 5025 | Hays & Boydston | Graham, TX 76450 | Oil & Gas Operator | Mar 1994 |
| 5026 | Hays & Croker Partnership | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5027 | Hays Partnership | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5028 | Hays, David H. | Olney, TX 76374 | Oil & Gas Operator | Dec 1995 |
| 5029 | Hays, John H. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5030 | Hays, Mrs. Earl (Cora) | Big Spring, TX 79720 | Oil & Gas Operator | Apr 2005 |
| 5031 | Hays, T.G. Petroleum Expl., Inc. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Dec 1994 |
| 5032 | Haywood, Paul M. Jr. | Denton, TX 76206 | Oil & Gas Operator | Mar 2002 |
| 5033 | Hazelett Oil Company, Inc. | Dale, TX 78616 | Oil & Gas Operator | Sep 2005 |
| 5034 | Hazelett Oil, Inc. | Dale, TX 78616 | Oil & Gas Operator | Aug 2024 |
| 5035 | Hazlewood-Patterson Company | Keller, TX 76244 | Gas Operator | Jun 2006 |
| 5036 | Hazoco, L.L.C. | Bellville, TX 77418 | Oil Operator | Feb 2026 |
| 5037 | HB Oil Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2023 |
| 5038 | HBC Oil Company, LLC | San Antonio, TX 78266 | Oil Operator | Feb 2026 |
| 5039 | Hce Operating LLC | Smyer, TX 79367 | Oil & Gas Operator | Feb 2026 |
| 5040 | HCM | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 5041 | HD Special-Situations, LP | San Francisco, CA 94111 | Oil & Gas Operator | Feb 2014 |
| 5042 | Headington Energy Partners, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 5043 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 5044 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 5045 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 5046 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 5047 | Headwaters Energy Partners, LLC | Dripping SPGS, TX 78620 | Oil & Gas Operator | Feb 2026 |
| 5048 | Heape Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Dec 2020 |
| 5049 | Heape, Gene G. | Dallas, TX 75367 | Oil & Gas Operator | Jun 2003 |
| 5050 | Heart Land Petroleum Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 5051 | Heartland Production, Inc. | Cuero, TX 77954 | Oil & Gas Operator | Feb 2026 |
| 5052 | Heartland Resources, Inc. | Temple, TX 76501 | Oil & Gas Operator | Mar 2008 |
| 5053 | Hebron Energy, LLC | Dallas, TX 75206 | Oil Operator | Jul 2018 |
| 5054 | Hec Petroleum, Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2006 |
| 5055 | Hedrick Production Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Feb 2026 |
| 5056 | Heflin, Bryan Exploration, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Mar 2008 |
| 5057 | Heifer Production Company LLC | Houston, TX 77098 | Oil & Gas Operator | Feb 2026 |
| 5058 | Heights Energy Corporation | Plano, TX 75026 | Oil & Gas Operator | Feb 2026 |
| 5059 | Heinrich Production Co Inc | Lubbuck, TX 79424 | Oil Operator | Dec 2024 |
| 5060 | Heisey Ventures, Inc. | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 5061 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
| 5062 | Helios Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 5063 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 5064 | Helis, William G. Co., LLC, The | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2003 |
| 5065 | Helis,WM.G.,Est., A Partnership | New Orleans, LA 70130 | Oil & Gas Operator | Aug 2003 |
| 5066 | Hellifino Operating, LLC | San Antonio, TX 78212 | Oil Operator | Feb 2026 |
| 5067 | Hellums, Harold | Cedar Creek, TX 78612 | Oil & Gas Operator | Mar 2008 |
| 5068 | Helmcamp, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2002 |
| 5069 | Helmer Energy & Stanton Engr. | Tyler, TX 75702 | Oil & Gas Operator | Jun 1998 |
| 5070 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Nov 2025 |
| 5071 | Helms Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 5072 | Helo Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2001 |
| 5073 | Helton Petroleum | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 5074 | Helton, Pat A. & Alberta | Allison, TX 79003 | Oil & Gas Operator | Feb 2026 |
| 5075 | Hemco Development, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2020 |
| 5076 | Hemco Production, L. L. C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2016 |
| 5077 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
| 5078 | Henderson & Erickson, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 5079 | Henderson Natural Res, L.L.C. | Crozet, VA 22932 | Oil & Gas Operator | Feb 2026 |
| 5080 | Henderson Petroleum Corp | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2013 |
| 5081 | Henderson, Bryan, Co. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 5082 | Henderson, Peter Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2020 |
| 5083 | Henderson, Sam F. | Odessa, TX 79760 | Oil & Gas Operator | Nov 2002 |
| 5084 | Henderson, Sam W. | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2019 |
| 5085 | Hendon WM E. Jr. Rev LVNG Trust | Everett, WA 98208 | Oil & Gas Operator | Feb 2026 |
| 5086 | Hendrix, John H. Corporation | Midland, TX 79705 | Oil & Gas Operator | Sep 2018 |
| 5087 | Henley Operating | Nocona, TX 76255 | Oil & Gas Operator | Feb 2026 |
| 5088 | Hennan Resources, Inc. | Great Neck, NY 11021 | Gas Operator | Nov 1997 |
| 5089 | Hennig Production Co., Inc. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2026 |
| 5090 | Henry Paul Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 5091 | Henry Petroleum Corp. | Midland, TX 79703 | Oil & Gas Operator | Mar 2001 |
| 5092 | Henry Petroleum LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Feb 2026 |
| 5093 | Henry Petroleum LP | Midland, TX 79701 | Oil & Gas Operator | Dec 2008 |
| 5094 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2019 |
| 5095 | Henry Resources LLC | Midland, TX 79703 | Oil & Gas Operator | Dec 2024 |
| 5096 | Henry, J.R. Inc | Brenham, TX 77833 | Oil & Gas Operator | Feb 2026 |
| 5097 | Henry, John Petroleum | Dallas, TX 75225 | Oil & Gas Operator | Dec 2001 |
| 5098 | Henscheid, Rufus | Muenster, TX 76252 | Oil Operator | Jan 2020 |
| 5099 | Henson Exploration, L.P. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 5100 | Hep Oil Company, LTD. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |