| 27701 | Signal Oil And Gas Company | Colleyville, TX 76034 | Oil & Gas Operator | Feb 2026 |
| 27702 | Signal Oil Company, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 27703 | Signal Operating L.L.C. | | Oil Operator | Jan 2025 |
| 27704 | Signal Petroleum | | Oil & Gas Operator | Jul 1980 |
| 27705 | Signal, LLC | | Oil & Gas Operator | Dec 2025 |
| 27706 | Signal, LLC Of Mississippi | | Oil & Gas Operator | Dec 2024 |
| 27707 | Signature Exploration Inc. | Shawnee, OK 74804-4130 | Oil & Gas Operator | Mar 2015 |
| 27708 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 27709 | Sikes Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jun 2003 |
| 27710 | Sikes, Arlas M. | Brownwood, TX 76801 | Oil & Gas Operator | May 2000 |
| 27711 | Silberman A & M Oil | Oklahoma City, OK 73122-3096 | Oil & Gas Operator | Apr 2014 |
| 27712 | Silent Stone Energy LLC | | Oil & Gas Operator | Nov 2025 |
| 27713 | Silhan, Terry | Marion, KS 66861 | Oil & Gas Operator | Dec 2009 |
| 27714 | Silleman, Drew C. | Cattaraugus, NY 14719 | Gas Operator | Dec 2024 |
| 27715 | Siltstone Resources Op II, LLC | Wilmington, DE 19801 | Oil & Gas Operator | Feb 2026 |
| 27716 | Silvco Energy, LLC | | Oil Operator | Apr 2014 |
| 27717 | Silver Anchor Resources LLC | Azle, TX 76020 | Oil & Gas Operator | Feb 2026 |
| 27718 | Silver Creek Oil | Merkel, TX 79536 | Oil & Gas Operator | Aug 2003 |
| 27719 | Silver Creek Oil & Gas, Inc. | Wichita, KS 67203 | Oil Operator | Dec 1997 |
| 27720 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Feb 2026 |
| 27721 | Silver Creek Permian Op Co, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2023 |
| 27722 | Silver Creek Resources, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2017 |
| 27723 | Silver Cross Energy Partners LLC | Richmond, TX 77469 | Oil & Gas Operator | Feb 2026 |
| 27724 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 27725 | Silver Exploration Company | | Oil & Gas Operator | Dec 2025 |
| 27726 | Silver Fox Oil & Gas LLC | McAllen, TX 78504 | Oil & Gas Operator | Feb 2026 |
| 27727 | Silver Hill Energy Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 27728 | Silver Hill Energy Partners, LLC | Dallas, TX 75219 | Oil & Gas Operator | Feb 2017 |
| 27729 | Silver Mountain Energy LLC | | Gas Operator | Dec 2025 |
| 27730 | Silver Oak Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2016 |
| 27731 | Silver Oak Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 2009 |
| 27732 | Silver Oak Operating, LLC | Longview, TX 75604 | Oil & Gas Operator | Feb 2026 |
| 27733 | Silver Oil & Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2026 |
| 27734 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Nov 2025 |
| 27735 | Silver Rock Energy, LLC | Terrell, TX 75160 | Oil Operator | Feb 2026 |
| 27736 | Silver Spike Energy Oper, LLC | Midland, TX 79710 | Oil & Gas Operator | Dec 2015 |
| 27737 | Silver Spike Energy Operating Of NM, LLC | Midland, TX 79701 | Oil Operator | Jul 2016 |
| 27738 | Silver Square Resources LLC | Cincinnati, OH 45219 | Oil Operator | Dec 2023 |
| 27739 | Silver Star Of Nevada Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2025 |
| 27740 | Silver Star Operating Co., LLC | Nada, TX 77460 | Gas Operator | Feb 2026 |
| 27741 | Silver Star Production Co | Moore, OK 73160-6202 | Oil & Gas Operator | Oct 2025 |
| 27742 | Silver Thread Oil & Gas, Inc. | | Oil & Gas Operator | Jul 2015 |
| 27743 | Silver Tusk Operating Co. LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2018 |
| 27744 | Silverado Oil Inc | Greeley, CO 80631 | Oil Operator | Apr 2000 |
| 27745 | Silverado Oil LTD | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2003 |
| 27746 | Silverback Operating II, LLC | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2025 |
| 27747 | Silverback Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Oct 2016 |
| 27748 | Silverbow Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 27749 | Silverbrook Operating II LLC | Barker, TX 77413 | Oil & Gas Operator | Feb 2026 |
| 27750 | Silverbrook Operating, LLC | Barker, TX 77413 | Oil & Gas Operator | Feb 2026 |
| 27751 | Silverridge Corp | Van Buren, AR 72956 | Oil & Gas Operator | Mar 2015 |
| 27752 | Silvertin Farm Production LLC | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2020 |
| 27753 | Simar Petroleum, LLC | | Oil Operator | Dec 2024 |
| 27754 | Simasko Producti | | Oil Operator | Dec 1986 |
| 27755 | Simasko Production Co | Denver, CO 80204 | Oil & Gas Operator | Nov 1997 |
| 27756 | Simata Energy | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 27757 | Simata Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 27758 | Simco Oil Company | | Oil Operator | Jul 1990 |
| 27759 | Simco Oil, LLC | Lytle, TX 78052 | Oil Operator | Feb 2026 |
| 27760 | Simco Operating | Shawnee, OK 74804-2501 | Oil Operator | Jan 2013 |
| 27761 | Simco Petroleum | Cheyenne, WY 82003 | Oil & Gas Operator | Oct 2009 |
| 27762 | Simcoe LLC | Durango, CO 81301 | Oil & Gas Operator | Dec 2025 |
| 27763 | Simcoe Oil Company | Scottsdale, AZ 85258-2553 | Oil & Gas Operator | May 2020 |
| 27764 | Simme, Steven | Elma, NY 14052 | Gas Operator | Dec 2024 |
| 27765 | Simminger, Robert John Jr | | Oil Operator | Sep 2025 |
| 27766 | Simmons Donald M | Muskogee, OK 74401 | Oil & Gas Operator | May 2013 |
| 27767 | Simmons Engr & Consulting Co | Farmington, NM 87499 | Gas Operator | Feb 2002 |
| 27768 | Simmons Evelyn B-Per Represent | Edmond, OK 73083-3610 | Oil & Gas Operator | Aug 1996 |
| 27769 | Simmons Mack McCoy | Cement, OK 73017 | Oil Operator | Feb 2025 |
| 27770 | Simmons Oil Corp | | Oil Operator | Jan 1989 |
| 27771 | Simmons Robert Z | | Oil Operator | Dec 1990 |
| 27772 | Simmons, Inc.* D. J. | | Oil & Gas Operator | May 2020 |
| 27773 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 27774 | Simmons, Stanley J. | Olney, TX 76374 | Oil & Gas Operator | Aug 1994 |
| 27775 | Simon Joseph W | Carney, OK 74832-0443 | Oil & Gas Operator | Dec 2016 |
| 27776 | Simon Of Bolivar Enterprises Inc | Cuba, NY 14727 | Oil & Gas Operator | Dec 2024 |
| 27777 | Simon Oil Company | Ardmore, OK 73401 | Oil Operator | Nov 2025 |
| 27778 | Simon Oil LLC | Kaycee, WY 82639 | Oil Operator | Sep 2025 |
| 27779 | Simon Royce & Joyce | Tecumseh, OK 74873-7341 | Oil Operator | Jun 2018 |
| 27780 | Simon, W. D. Oil Co. | Kermit, TX 79745 | Oil & Gas Operator | Feb 2026 |
| 27781 | Simple Operating LLC | Cross Plains, TX 76443 | Oil Operator | Feb 2026 |
| 27782 | Simples Oil International, LLC | Los Angeles, CA 90067 | Oil & Gas Operator | Feb 2026 |
| 27783 | Simpson B T Jr | Orlando, FL 32806 | Oil & Gas Operator | Dec 1986 |
| 27784 | Simpson Bros. Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 27785 | Simpson Bros. Oil Co.-Odessa | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 27786 | Simpson Gary H | Albion, PA 16401-8008 | Gas Operator | Dec 2014 |
| 27787 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 27788 | Simpson Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2004 |
| 27789 | Simpson Operating Services, LP | Ballinger, TX 76821 | Oil & Gas Operator | Feb 2026 |
| 27790 | Simpson Well Service, Inc. | | Oil Operator | Dec 1996 |
| 27791 | Simpson, A. E. | Electra, TX 76360 | Oil & Gas Operator | Dec 2006 |
| 27792 | Simray GP, LLC | Richardson, TX 75080 | Oil & Gas Operator | Dec 2015 |
| 27793 | Simray Oil & Gas, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Sep 2003 |
| 27794 | Simray Operating Corp. | Richardson, TX 75080 | Oil & Gas Operator | Mar 2009 |
| 27795 | Simray Production Company LP | Richland, TX 75080 | Oil & Gas Operator | Dec 2010 |
| 27796 | Sims, John S. | Lawn, TX 79530 | Oil & Gas Operator | Aug 2003 |
| 27797 | Sinclair Development, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 27798 | Sinclair Energy Corporation | Fort Worth, TX 76177 | Oil & Gas Operator | Feb 2026 |
| 27799 | Sinclair Exploration Company | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 27800 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Feb 2026 |