| 10401 | Silverback Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Oct 2016 |
| 10402 | Silverbow Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 10403 | Silverbrook Operating II LLC | Barker, TX 77413 | Oil & Gas Operator | Feb 2026 |
| 10404 | Silverbrook Operating, LLC | Barker, TX 77413 | Oil & Gas Operator | Feb 2026 |
| 10405 | Simata Energy | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 10406 | Simata Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 10407 | Simco Oil, LLC | Lytle, TX 78052 | Oil Operator | Feb 2026 |
| 10408 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 10409 | Simmons, Stanley J. | Olney, TX 76374 | Oil & Gas Operator | Aug 1994 |
| 10410 | Simon, W. D. Oil Co. | Kermit, TX 79745 | Oil & Gas Operator | Feb 2026 |
| 10411 | Simple Operating LLC | Cross Plains, TX 76443 | Oil Operator | Feb 2026 |
| 10412 | Simples Oil International, LLC | Los Angeles, CA 90067 | Oil & Gas Operator | Feb 2026 |
| 10413 | Simpson Bros. Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 10414 | Simpson Bros. Oil Co.-Odessa | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 10415 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 10416 | Simpson Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2004 |
| 10417 | Simpson Operating Services, LP | Ballinger, TX 76821 | Oil & Gas Operator | Feb 2026 |
| 10418 | Simpson, A. E. | Electra, TX 76360 | Oil & Gas Operator | Dec 2006 |
| 10419 | Simray GP, LLC | Richardson, TX 75080 | Oil & Gas Operator | Dec 2015 |
| 10420 | Simray Oil & Gas, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Sep 2003 |
| 10421 | Simray Operating Corp. | Richardson, TX 75080 | Oil & Gas Operator | Mar 2009 |
| 10422 | Sims, John S. | Lawn, TX 79530 | Oil & Gas Operator | Aug 2003 |
| 10423 | Sinclair Development, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 10424 | Sinclair Energy Corporation | Fort Worth, TX 76177 | Oil & Gas Operator | Feb 2026 |
| 10425 | Sinclair Exploration Company | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 10426 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Feb 2026 |
| 10427 | Sinclair Oil Corporation | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Aug 2006 |
| 10428 | Single Barrel Oil And Gas LLC | Granbury, TX 76048 | Oil & Gas Operator | Feb 2026 |
| 10429 | Singleton Investments, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2012 |
| 10430 | Sink Hole, Inc. | Levelland, TX 79336 | Oil & Gas Operator | Dec 2000 |
| 10431 | Sinow, G. S. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1995 |
| 10432 | Sip'S Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Feb 2026 |
| 10433 | Siroco Operating Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2010 |
| 10434 | Sissom Oil | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 10435 | Sissom Oil Field Services, LLC | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 10436 | Sisters Operating Company | Victoria, TX 77904 | Oil & Gas Operator | Nov 2010 |
| 10437 | Sitton, Ronnie Incorporated | Graford, TX 76449 | Oil & Gas Operator | Feb 2020 |
| 10438 | Situs Oil & Gas, LLC | Corpus Chrsti, TX 78414 | Oil Operator | Feb 2026 |
| 10439 | Six C Oil | Bowie, TX 76230 | Oil & Gas Operator | Sep 2011 |
| 10440 | Six Oil Producers | Abilene, TX 79601 | Oil & Gas Operator | Sep 2002 |
| 10441 | Six-S Properties, Inc. | Austin, TX 78767 | Oil & Gas Operator | Feb 2026 |
| 10442 | Sixess Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 10443 | Sizemore, James | Hardin, TX 77561 | Oil & Gas Operator | Jun 2003 |
| 10444 | Skaar, K. M. Oil & Gas Co. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 10445 | Skeeter Oil L.L.C. | Big Spring, TX 79720 | Oil Operator | Feb 2026 |
| 10446 | Skewes Operating Company | Bluefield, VA 24605 | Oil & Gas Operator | Feb 2026 |
| 10447 | Ski Production, LLC | Muenster, TX 76252 | Oil Operator | Feb 2026 |
| 10448 | Skidmore Energy,Inc. | Salado, TX 76571 | Oil & Gas Operator | Jun 1999 |
| 10449 | Skidmore Exploration, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Jul 1997 |
| 10450 | Skidmore, James E. | Nocona, TX 76255 | Oil & Gas Operator | Nov 2008 |
| 10451 | Skinner Cattle, Inc. | Nocona, TX 76255 | Oil Operator | Feb 2026 |
| 10452 | Skinner Energy Management, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Jan 2011 |
| 10453 | Skinner, Robert V. | Spearman, TX 79081 | Oil & Gas Operator | Aug 2008 |
| 10454 | Skinner, W. E. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 10455 | Skinnergy Co. | Spearman, TX 79081 | Oil & Gas Operator | Feb 2026 |
| 10456 | Sklar & Phillips Oil Co. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2000 |
| 10457 | Sklar Exploration Company LLC | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 10458 | Sklar-Tex L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2001 |
| 10459 | Skrivanos Engineering, Inc. | Shreveport, LA 71164 | Oil & Gas Operator | Dec 2011 |
| 10460 | SKS Oil | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 10461 | Sky Development Corporation | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 10462 | Sky Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 10463 | Skybridge Energy LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 10464 | Skycap Energy, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2025 |
| 10465 | Skytop Oil & Gas | Giddings, TX 78942 | Oil & Gas Operator | Feb 2026 |
| 10466 | Skyway Energy LLC | Leesburg, OH 34748 | Oil & Gas Operator | Dec 2020 |
| 10467 | Slack Oil & Gas | Refugio, TX 78377 | Oil & Gas Operator | Dec 2012 |
| 10468 | Slack, R. C. | Pecos, TX 79772 | Oil & Gas Operator | Jul 2000 |
| 10469 | Slagel, H. P. Prod. Co. | Snyder, TX 79550 | Oil & Gas Operator | Dec 2006 |
| 10470 | Slant Operating, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Feb 2026 |
| 10471 | Slape Oil Company, Inc. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 10472 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Feb 2026 |
| 10473 | Slatex Well Service, Inc. | Batson, TX 77519 | Oil Operator | Feb 2026 |
| 10474 | Slaughter J M Oil Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2001 |
| 10475 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 10476 | Sledge Bros. Oil Co. | Midland, TX 79702 | Oil & Gas Operator | Mar 2016 |
| 10477 | Sledge, H. G., Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2016 |
| 10478 | Slick Inc. | MC Gregor, TX 76657 | Oil Operator | Feb 2026 |
| 10479 | Slick Production, LLC | Muenster, TX 76252 | Oil & Gas Operator | Nov 2025 |
| 10480 | Slimhole Engineering Co., Inc. | Richmond, TX 77469 | Oil & Gas Operator | Feb 2026 |
| 10481 | Slingshot Oil & Gas | Houston, TX 77019 | Oil Operator | Feb 2026 |
| 10482 | Sloan Oil Corporation | Humble, TX 77347 | Oil & Gas Operator | Mar 2015 |
| 10483 | Sloan Petroleum Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 10484 | SLT Dakota Operating, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Feb 2026 |
| 10485 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Feb 2026 |
| 10486 | SM Operating Company LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 10487 | Smackover Shell LTD. Partnership | Houston, TX 77001 | Gas Operator | Apr 2000 |
| 10488 | Smail, James R. | Big Prairie, OH 44611 | Oil & Gas Operator | Dec 1998 |
| 10489 | Smal Energy Corp | Tyler, TX 75710 | Oil & Gas Operator | Oct 1995 |
| 10490 | Small, R.P. Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 10491 | Smalley, Bill | Albany, TX 76430 | Oil & Gas Operator | Jul 2001 |
| 10492 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 10493 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 10494 | Smith & Spragins | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1995 |
| 10495 | Smith Brothers Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 10496 | Smith Energy 1986a Partnership | Alvin, TX 77511 | Oil & Gas Operator | Feb 2010 |
| 10497 | Smith Energy Operating Company | Lubbock, TX 79423 | Oil & Gas Operator | Feb 2026 |
| 10498 | Smith Family LTD Partnership | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2004 |
| 10499 | Smith Oil Co. | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 10500 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Feb 2005 |