| Obrien, G. W., Etal O-10-7338 | Two P Partners, LLC only | Ward-Estes, North | Ward | 2,066 | 31.3M | 30.6M | Jan 1993 – Jul 2026 |
| Hutchings Stock Assn. O-10-7337 | Two P Partners, LLC only | Ward-Estes, North | Ward | 1,671 | 26.8M | 20.2M | Jan 1993 – Jul 2026 |
| Foster, Mary O-10-2890 | Basa Resources, Inc. only | Iatan, East Howard | Mitchell | 495 | 12.8M | 2.65M | Jan 1993 – Jul 2026 |
| Glasscock, Howard W. (G-S) Unit O-10-41062 | Basa Resources, Inc. only | Howard Glasscock (Consolidated) | Glasscock | 242 | 5.93M | 43K | Dec 2011 – Jul 2026 |
| Roberts, Dora, B. D. & E. O-10-2827 | Sheridan Production Company, LLC only | Howard Glasscock | Howard | 194 | 5.33M | 16.9K | Jan 1993 – Aug 2012 |
| Dodge, Granville M., Est. O-10-2905 | Grayrock Energy II, LLC only | Iatan, East Howard | Howard | 262 | 5.2M | 438K | Jan 1993 – Jul 2026 |
| Estes, E. W. O-10-7336 | Two P Partners, LLC only | Ward-Estes, North | Ward | 241 | 4.7M | 4.8M | Jan 1993 – Jul 2026 |
| Glasscock, Howard W. (G-S) Unit O-10-22575 | Sheridan Production Company, LLC only | Howard Glasscock | Glasscock | 287 | 4.42M | 70.5K | Jan 1993 – Jun 2014 |
| Ward, J. M. -C- O-8-3810 | Basa Resources, Inc. only | Stephens County Regular | Stephens | 172 | 3.8M | 521K | Jan 1993 – Jul 2026 |
| Hutchings Stock Assn. O-10-34712 | Sundown Energy LP only | Ward-Estes, N. (Wichita-Albany) | Ward | 41 | 3.15M | 6.46M | Mar 1995 – Jul 2026 |
| Settles, W. R. -A- O-10-2704 | Conocophillips Company only | Howard Glasscock | Howard | 138 | 3.07M | 72.3K | Jan 1993 – May 2012 |
| Esma Jean Ward Trust O-1-19218 | Warwick-Artemis, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 13 | 2.85M | 1.42M | Nov 2017 – Jul 2026 |
| Dodge, G. M. O-10-2909 | Bce-Mach III LLC only | Iatan, East Howard | Howard | 99 | 2.83M | 254K | Jan 1993 – Jul 2026 |
| Ralph Edwards O-1-16025 | Ineos USA Oil & Gas LLC only | Eagleville (Eagle Ford-1) | McMullen | 16 | 2.78M | 1.42M | Mar 2012 – Jul 2026 |
| Kloh O-10-2791 | Apache Corporation only | Howard Glasscock | Howard | 42 | 2.58M | 74.6K | Jan 1993 – Mar 2016 |
| Edwards Unit O-1-15442 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 9 | 2.14M | 2.03M | Dec 2010 – Jul 2026 |
| Bell, A. M. O-10-2908 | Bce-Mach III LLC only | Iatan, East Howard | Howard | 66 | 1.95M | 127K | Jan 1993 – Jul 2026 |
| Foster, W. L. #1 O-10-2910 | Bce-Mach III LLC only | Iatan, East Howard | Mitchell | 99 | 1.94M | 144K | Jan 1993 – Jul 2026 |
| Howard, N. J. -Abc- O-13-4153 | Peba Oil & Gas, Inc. only | Montague County Regular | Montague | 175 | 1.89M | 105K | Jan 1993 – Jul 2026 |
| Kloh O-10-2748 | Cimarex Energy Co. of Colorado only | Howard Glasscock | Howard | 88 | 1.84M | 751 | Jan 1993 – Mar 2013 |
| Roberts, Dora O-10-2803 | Sheridan Production Company, LLC only | Howard Glasscock | Howard | 67 | 1.82M | 14.8K | Jan 1993 – Jul 2012 |
| Settles, W. R. -A- O-10-41251 | Citation Oil & Gas Corp. only | Howard Glasscock (Consolidated) | Howard | 118 | 1.79M | 90.2K | Dec 2011 – Jul 2026 |
| Overton, B. O-10-2700 | Conocophillips Company only | Howard Glasscock | Howard | 41 | 1.57M | 29.8K | Jan 1993 – Apr 2013 |
| Settles,w.r. O-10-23286 | Endeavor Energy Resources L.P. only | Howard Glasscock | Howard | 69 | 1.54M | 70.2K | Jan 1993 – May 2012 |
| Settles, W. R. O-10-41250 | Citation Oil & Gas Corp. only | Howard Glasscock (Consolidated) | Howard | 76 | 1.53M | 84.5K | Dec 2011 – Jul 2026 |
| Howard Glasscock East Unit O-10-35609 | Apache Corporation only | Howard Glasscock | Howard | 131 | 1.45M | 97.3K | Jan 1998 – Mar 2016 |
| Dodge O-10-2883 | United Oil & Shale LLC only | Iatan, East Howard | Howard | 49 | 1.43M | 21 | Jan 1993 – Jul 2026 |
| Knobloch B - O-1-2800 | Texas Petroleum Investment Co. only | Darst Creek (Edwards) | Guadalupe | 46 | 1.36M | 180 | Jan 1993 – Jul 2026 |
| Settles, W. R. O-10-2706 | Conocophillips Company only | Howard Glasscock | Howard | 62 | 1.35M | 59.2K | Jan 1993 – Aug 2012 |
| Roberts, Dora -Bde- O-10-41064 | Basa Resources, Inc. only | Howard Glasscock (Consolidated) | Howard | 146 | 1.34M | 33.8K | Dec 2011 – Jul 2026 |
| Knobloch, C. O-1-2796 | Texas Petroleum Investment Co. only | Darst Creek (Edwards) | Guadalupe | 50 | 1.31M | 956 | Jan 1993 – Jul 2026 |
| Watson, W. W. O-10-2891 | Basa Resources, Inc. only | Iatan, East Howard | Mitchell | 75 | 1.3M | 148K | Jan 1993 – Jul 2026 |
| Roberts, Dora O-10-41282 | Basa Resources, Inc. only | Howard Glasscock (Consolidated) | Howard | 53 | 1.3M | 19.8K | Dec 2011 – Jul 2026 |
| Hsa Sec 9/10 CO2 O-10-32510 | Whiting Oil and Gas Corporation only | Ward-Estes, North | Ward | 49 | 1.29M | 1.62M | Jan 1993 – Oct 2008 |
| Fuller, M. A. O-11-1184 | Unitex Oil & Gas, L.L.C. only | Dorward | Garza | 98 | 1.27M | 851K | Jan 1993 – Jul 2026 |
| Kloh Etal O-10-41524 | Apache Corporation only | Howard Glasscock (Consolidated) | Howard | 84 | 1.23M | 68.6K | Dec 2011 – Jul 2026 |
| Kloh Etal O-10-2699 | Apache Corporation only | Howard Glasscock | Howard | 58 | 1.2M | 3.18K | Jan 1993 – Jul 2012 |
| Roberts, Dora O-10-41261 | Citation Oil & Gas Corp. only | Howard Glasscock (Consolidated) | Howard | 39 | 1.14M | 27.1K | Dec 2011 – Jul 2026 |
| Ward, J. M. -B- O-8-3809 | Basa Resources, Inc. only | Stephens County Regular | Stephens | 24 | 1.13M | 132K | Jan 1993 – Jul 2026 |
| Chalk, G. O. -D- O-10-41216 | Citation Oil & Gas Corp. only | Howard Glasscock (Consolidated) | Howard | 32 | 1.12M | 252K | Dec 2011 – Jul 2026 |
| Floyd Tiller O-1-15430 | Texian Operating Company, LLC only | Salt Flat (Edwards) | Caldwell | 12 | 1.12M | 0 | Sep 2010 – Jul 2026 |
| Edwards, Clara O-10-39938 | Diamondback E&P LLC only | Sallie Ann (Spraberry-Wolfcamp) | Ector | 6 | 1.1M | 4.22M | Dec 2009 – Jul 2026 |
| Settles-Yates Unit O-10-20060 | Conocophillips Company only | Howard Glasscock | Howard | 84 | 1.08M | 34.3K | Jan 1993 – Apr 2012 |
| Denman -A- O-1-2784 | Texas Petroleum Investment Co. only | Darst Creek (Edwards) | Guadalupe | 53 | 1.04M | 13K | Jan 1993 – Jul 2026 |
| Kloh O-10-42224 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 80 | 997K | 0 | Dec 2011 – Jul 2026 |
| Foster, W. L. #5 O-10-2911 | Bce-Mach III LLC only | Iatan, East Howard | Mitchell | 29 | 992K | 165K | Jan 1993 – Jul 2026 |
| Settles, W. R. O-10-2825 | Sheridan Production Company, LLC only | Howard Glasscock | Howard | 24 | 971K | 9.18K | Jan 1993 – Aug 2012 |
| Hyman, Sarah O-10-41242 | Citation Oil & Gas Corp. only | Howard Glasscock (Consolidated) | Howard | 40 | 949K | 234K | Dec 2011 – Jul 2026 |
| Edwards Unit A O-1-18675 | Magnolia Oil & Gas Operating LLC only | Eagleville (Eagle Ford-1) | Gonzales | 5 | 903K | 1.77M | Jan 2015 – Jul 2026 |
| Derward Unit O-1-17125 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | Gonzales | 4 | 900K | 1.14M | Aug 2013 – Jul 2026 |