| Dodge, Granville M., Est. O-10-2905 | Grayrock Energy II, LLC only | Iatan, East Howard | Howard | 262 | 5.22M | 438K | by Jan 1993 – Aug 2026 |
| Ray Kinsella O-10-51476 | SM Energy Company only | Spraberry (Trend Area) | Howard | 5 | 1.74M | 4.19M | Feb 2019 – Aug 2026 |
| Snyder, Susie B. O-10-6197 | Grayrock Energy II, LLC only | Snyder | Howard | 83 | 1.31M | 23.4K | by Jan 1993 – Aug 2026 |
| Snyder, B. S. -A- O-10-6213 | Grayrock Energy II, LLC only | Snyder | Howard | 28 | 1.15M | 95.3K | by Jan 1993 – Aug 2026 |
| Kloh O-10-42224 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 80 | 1.01M | 0 | Dec 2011 – Aug 2026 |
| Graystone Unit 39-26 O-10-62685 | Surge Operating, LLC only | Spraberry (Trend Area) | Howard | 6 | 912K | 1.91M | Nov 2024 – Aug 2026 |
| Davis, J. W. -B- O-10-2902 | Grayrock Energy II, LLC only | Iatan, East Howard | Howard | 17 | 695K | 24.9K | by Jan 1993 – Aug 2026 |
| Chalk, G. O. O-10-42240 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 40 | 576K | 286 | Dec 2011 – Aug 2026 |
| Murray B O-10-2894 | Bce-Mach III LLC only | Iatan, East Howard | Howard | 12 | 505K | 17.1K | by Jan 1993 – Aug 2026 |
| Snyder, B. S. -C- O-10-6219 | Grayrock Energy II, LLC only | Snyder | Howard | 39 | 445K | 34K | by Jan 1993 – Aug 2026 |
| Settles, W. R. O-10-41272 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 47 | 431K | 0 | Dec 2011 – Aug 2026 |
| Murray C O-10-2893 | Bce-Mach III LLC only | Iatan, East Howard | Howard | 12 | 377K | 17.5K | by Jan 1993 – Aug 2026 |
| TXL, B. S. -D- O-10-6195 | Grayrock Energy II, LLC only | Snyder | Howard | 18 | 361K | 34.8K | by Jan 1993 – Aug 2026 |
| Snyder, B. S. -E- O-10-6221 | Grayrock Energy II, LLC only | Snyder | Howard | 20 | 288K | 27.7K | by Jan 1993 – Aug 2026 |
| Denman, L. C. -B- O-10-2904 | Grayrock Energy II, LLC only | Iatan, East Howard | Howard | 9 | 280K | 264 | by Jan 1993 – Aug 2026 |
| Denman, L. C., -A- O-10-2903 | Grayrock Energy II, LLC only | Iatan, East Howard | Howard | 16 | 277K | 3.07K | by Jan 1993 – Aug 2026 |
| Murray A O-10-2892 | Bce-Mach III LLC only | Iatan, East Howard | Howard | 8 | 266K | 10.3K | by Jan 1993 – Aug 2026 |
| TXL, B. S. -A- O-10-6214 | Grayrock Energy II, LLC only | Snyder | Howard | 18 | 235K | 10.6K | by Jan 1993 – Aug 2026 |
| Clay O-10-42235 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 29 | 234K | 24.9K | Dec 2011 – Aug 2026 |
| Reed Brothers De O-10-41054 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 20 | 224K | 0 | Dec 2011 – Aug 2026 |
| Ray O-10-37772 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 5 | 193K | 919K | Feb 2006 – May 2026 |
| Douthit, E. W. De O-10-41277 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 22 | 160K | 33 | Dec 2011 – Aug 2026 |
| Reed. L. R & W. N. O-10-41275 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 35 | 139K | 0 | Dec 2011 – Aug 2026 |
| Clay, H. R. O-10-41676 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 36 | 136K | 0 | Dec 2011 – Aug 2026 |
| Batjer, Patti -B- O-10-41781 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 13 | 118K | 0 | Dec 2011 – Aug 2026 |
| Raymond Eula 30 O-10-43568 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 4 | 115K | 496K | Oct 2012 – May 2026 |
| Douthit, E. W. -A- O-10-42228 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 4 | 115K | 0 | Dec 2011 – Aug 2026 |
| Denman /Clark/ O-10-2870 | Grayrock Energy II, LLC only | Iatan, East Howard | Howard | 8 | 110K | 264 | by Jan 1993 – Aug 2026 |
| Douthit, E. W. -B- O-10-42229 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 3 | 108K | 0 | Dec 2011 – Aug 2026 |
| Douthit, E. W. -C- De O-10-41057 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 18 | 90.9K | 0 | Dec 2011 – Aug 2026 |
| Batjer, Patti -C- O-10-41851 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 8 | 90.6K | 0 | Dec 2011 – Aug 2026 |
| Chalk -A- O-10-42210 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 12 | 87.8K | 16.8K | Dec 2011 – Aug 2026 |
| Douthit, E. W. -B- De O-10-41056 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 7 | 83K | 0 | Dec 2011 – Aug 2026 |
| TXL, B. S. -C- O-10-11645 | Grayrock Energy II, LLC only | Snyder | Howard | 11 | 81.8K | 2.65K | by Jan 1993 – Aug 2026 |
| Chalk, Otis /EO/ O-10-42211 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 7 | 71.4K | 22.7K | Dec 2011 – Aug 2026 |
| Cities-Reed O-10-42227 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 2 | 57.7K | 0 | Dec 2011 – Oct 2025 |
| Snyder, D. H., Jr. O-10-15882 | Grayrock Energy II, LLC only | Snyder | Howard | 7 | 49.3K | 6.41K | by Jan 1993 – May 2022 |
| Reed "D-142" O-10-41268 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 4 | 47.9K | 0 | Dec 2011 – Aug 2026 |
| Douthit Unit O-10-41269 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 51 | 47.5K | 0 | Dec 2011 – Mar 2026 |
| Snyder, B. S. -D- O-10-6194 | Grayrock Energy II, LLC only | Snyder | Howard | 4 | 45.9K | 5.99K | by Jan 1993 – Mar 2023 |
| Snyder, D. H. O-10-16258 | Grayrock Energy II, LLC only | Snyder | Howard | 7 | 43.7K | 4.63K | by Jan 1993 – Aug 2026 |
| Douthit, E. W. -N- O-10-41274 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 2 | 40K | 0 | Dec 2011 – Oct 2025 |
| Murray O-10-2895 | Bce-Mach III LLC only | Iatan, East Howard | Howard | 8 | 39.8K | 5.51K | by Jan 1993 – Aug 2026 |
| Reed -A- O-10-41267 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 7 | 39.3K | 0 | Dec 2011 – Aug 2026 |
| SP TXL "A" O-10-6220 | Grayrock Energy II, LLC only | Snyder | Howard | 6 | 38.9K | 21 | by Jan 1993 – Jan 2016 |
| T. P. Land & Trust, B. S. O-10-6222 | Grayrock Energy II, LLC only | Snyder | Howard | 6 | 38K | 1 | by Jan 1993 – Aug 2026 |
| Ray Unit 23 O-10-46989 | Oxyrock Operating, LLC only | Spraberry (Trend Area) | Howard | 1 | 37.3K | 166K | Aug 2015 – Aug 2026 |
| Douthit, E. W. -a- De O-10-41276 | Grayrock Energy II, LLC only | Howard Glasscock (Consolidated) | Howard | 8 | 36.1K | 0 | Dec 2011 – Aug 2026 |
| Murray -BS- O-10-21691 | Bce-Mach III LLC only | Iatan (San Andres) | Howard | 1 | 35.9K | 1.74K | by Jan 1993 – Aug 2026 |
| Ray 2 O-10-43696 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Howard | 1 | 33.5K | 172K | Feb 2013 – Jan 2020 |