| Harding Fee G-10-70323 | Ring Energy, Inc. only | Beall (Ellen) | Ward | 1 | 24.1K | 4.31M | Jan 1993 – Apr 2020 |
| Black Stone Rebecca G-6-266154 | Harding Company only | Rebecca (James Lime) | San Augustine | 1 | 10.5K | 92.2K | Mar 2011 – Dec 2014 |
| Harding G-13-280357 | FX Energy Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 4.98K | 367K | Mar 2016 – Mar 2022 |
| Harding, Glen G-4-154431 | Deguello Operating LLC only | San Salvador (Consolidated Frio) | Hidalgo | 1 | 3.87K | 1.63M | Mar 1995 – Jul 2003 |
| Harding, Glen G-4-193585 | Deguello Operating LLC only | San Salvador (Consolidated Frio) | Hidalgo | 1 | 3.36K | 2.82M | May 2000 – Dec 2012 |
| Harding Fee G-10-189706 | Ring Energy, Inc. only | Beall (Montoya) | Ward | 1 | 2.89K | 6.03M | May 2002 – Feb 2026 |
| McAllen Fieldwide Unit G-4-142650 | Fina Oil & Chemical Company only | McAllen (Harding 6500) | Hidalgo | 1 | 2.33K | 467K | Jan 1993 – Oct 1994 |
| Siegmund Harding G-13-232442 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 1.95K | 664K | Aug 2007 – Feb 2012 |
| Harding Fee G-10-193482 | Ring Energy, Inc. only | Beall (Montoya) | Ward | 1 | 1.26K | 1.51M | Oct 2002 – Jan 2022 |
| Harding/Lbgu G-4-138945 | Rincon Petroleum Corporation only | San Salvador (Consolidated Frio) | Hidalgo | 1 | 1.13K | 1.42M | Jan 1993 – Feb 2002 |
| Harding, Glen G-4-193920 | Deguello Operating LLC only | San Salvador (Consolidated Frio) | Hidalgo | 1 | 851 | 296K | Feb 2003 – Mar 2008 |
| Harding-Eastman G-13-210560 | WY Woodland Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 655 | 120K | Jun 2005 – Jul 2012 |
| Carrizo-Harding-El Chico G-13-211028 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 611 | 1.29M | May 2005 – Mar 2017 |
| Mitchell "A" G-13-241113 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 582 | 214K | Aug 2008 – Dec 2013 |
| Adami-Boyles G-13-235348 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 517 | 84.8K | Aug 2007 – Mar 2010 |
| Harding Gas Unit G-6-253743 | Cabot Oil & Gas Corporation only | Angie (James Lime) | San Augustine | 1 | 225 | 680K | Oct 2009 – Mar 2012 |
| Sundance-Harding-Turner G-13-213887 | Amrwr, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 147 | 226K | Aug 2005 – Nov 2010 |
| Grand (Harding) R. Crow Unit G-13-226265 | Grand Operating, Inc. only | Newark, East (Barnett Shale) | Tarrant | 1 | 112 | 820K | Sep 2006 – Nov 2009 |
| Harding, Glenn G-4-140044 | Southwest Oil & Land, Inc. only | San Salvador (8500) | Hidalgo | 1 | 91 | 105K | Jan 1993 – Jan 1994 |
| Dickie G-8-179185 | Harding Company only | Woodson, NW. (Caddo, Lower) | Throckmorton | 1 | 70 | 6.34K | Sep 2000 – Dec 2000 |
| Sundance-Harding-Turner G-13-214680 | Amrwr, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 58 | 339K | Aug 2005 – Dec 2010 |
| Campbell-Sundance-Harding G-13-219143 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 51 | 151K | Aug 2006 – Jan 2014 |
| Harding, Glen G-4-208348 | Deguello Operating LLC only | San Salvador (Consolidated Frio) | Hidalgo | 1 | 46 | 234K | Jan 2005 – Dec 2019 |
| Grand (Harding) R. Pence G-13-231518 | Grand Operating, Inc. only | Newark, East (Barnett Shale) | Tarrant | 1 | 43 | 18.8K | Mar 2007 – Aug 2007 |
| Carrizo-Harding-El Chico G-13-218363 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 32 | 253K | Mar 2006 – Jul 2012 |
| Watkins Trust (Harding) G-13-240511 | Grand Operating, Inc. only | Newark, East (Barnett Shale) | Tarrant | 1 | 29 | 1.99M | May 2007 – Apr 2015 |
| Harding Unit G-13-207440 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 8 | 1.3M | Feb 2005 – Apr 2026 |
| Morgan-Harding Sundance G-13-210656 | WY Woodland Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 8 | 133K | Jun 2005 – Oct 2011 |
| Glen Harding Gas Unit G-4-161789 | Contract Energy, L.L.C. only | San Salvador (Consolidated Frio) | Hidalgo | 1 | 7 | 146K | Jan 1997 – Apr 1999 |
| Harding G-13-282138 | FX Energy Operating, LLC only | Newark, East (Barnett Shale) | Jack | 1 | 0 | 0 | — |
| Campbell-Sundance-Harding G-13-214688 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 401K | Nov 2005 – May 2009 |
| Leonard "A" G-8-93275 | Harding Company only | El Chico (Strawn) | Parker | 1 | 0 | 47.9K | Jan 1993 – Aug 2004 |
| Helen R Chatham et al Unit G-8-109968 | Harding Company only | Muir (Strawn 4400) | Parker | 1 | 0 | 49.3K | Jan 1993 – May 2010 |
| Patton G-8-227125 | Harding Company only | Wildcat | Comanche | 1 | 0 | 0 | — |
| Steward G-8-236292 | Harding Company only | Wildcat | Comanche | 1 | 0 | 0 | — |
| Nowell G-8-236573 | Harding Company only | Wildcat | Comanche | 1 | 0 | 0 | — |
| Proctor Harding Halff G-9-47283 | Vanco Oil & Gas Corp. only | Fergus (Grayburg UP) | Crockett | 1 | 0 | 17.7K | Mar 1993 – Apr 2000 |
| Liberty G-13-186486 | Harding Company only | Newark, East (Barnett Shale) | Wise | 1 | 0 | 6.84K | Jul 2002 – Sep 2003 |
| Dearing-Rogers-Schmid G-13-195631 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 400K | Jun 2003 – Aug 2011 |
| Hill-Colvin G-13-198007 | Harding Company only | Newark, East (Barnett Shale) | Tarrant | 1 | 0 | 5.69K | Jan 2006 – Feb 2007 |
| Harding-Moore G-13-203309 | Sundance Resources, Inc. only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 2.75K | Jun 2004 – Mar 2006 |
| Campbell-Sundance-Harding G-13-205207 | Somerset Operating, LLC only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 314K | Aug 2005 – Jun 2022 |
| North Elder G-13-205208 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 11.9K | Dec 2004 – Aug 2006 |
| North White G-13-205232 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 13.8K | Oct 2005 – Jan 2007 |
| Porter G-13-210117 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 4.77K | Nov 2005 – Jan 2007 |
| North Elder G-13-211422 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 77.8K | Jul 2005 – Sep 2006 |
| Harding, Glenn G-4-134142 | Southwest Oil & Land, Inc. only | San Salvador (8400) | Hidalgo | 1 | 0 | 0 | — |
| Sundance-Harding-Babbitt G-13-215655 | Sundance Resources, Inc. only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 1.09K | Nov 2005 – Nov 2005 |
| Porter G-13-221615 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 70K | Apr 2006 – Jan 2008 |
| North White G-13-221619 | Harding Company only | Newark, East (Barnett Shale) | Parker | 1 | 0 | 136K | Apr 2006 – Feb 2009 |