| Layden G-2-164268 | Allegro Investments, Inc. | Toro Grande, E. (10,900) | Jackson | 1 | 68.8K | 724K | Jul 1997 – Dec 2002 |
| Thunderbird G-2-209088 | Allegro Investments, Inc. | Big 12 (11,900) | Jackson | 1 | 58.9K | 1.77M | Sep 2004 – Oct 2006 |
| Weaver-Dugger Unit G-2-180197 | Allegro Investments, Inc. | Maude B. Traylor, N. (44 Seg A) | Jackson | 1 | 37.8K | 1.71M | Sep 2000 – Feb 2007 |
| Signal Hill G-2-194684 | Allegro Investments, Inc. | Big 12 (10,400) | Jackson | 1 | 34.2K | 736K | Dec 2001 – Nov 2006 |
| Yendrey Fee G-2-170255 | Allegro Investments, Inc. | Big 12 (11,100) | Jackson | 1 | 16.1K | 99.1K | Aug 1998 – Jan 2002 |
| Hensley-Johnny G-2-182093 | Allegro Investments, Inc. | Maude B. Traylor, North (42) | Jackson | 1 | 8.25K | 387K | Feb 2001 – Oct 2002 |
| 4 Way Ranch G-2-180914 | Allegro Investments, Inc. | Lemel (7200) | Jackson | 1 | 6.42K | 130K | Jul 2000 – Jun 2002 |
| McLeod Gas Unit G-2-167425 | Allegro Investments, Inc. | Edna, South (Frio 5140) | Jackson | 1 | 5.94K | 2.33M | Feb 1998 – Mar 2003 |
| Edwards Unit G-2-154627 | Allegro Investments, Inc. | Miss Mason (2ND Massive "A") | Goliad | 1 | 5.9K | 43.5K | Jan 1995 – Jan 1997 |
| Fenner, Katherine G-2-148669 | Allegro Investments, Inc. | Lost Fork (Yegua 6400) | Jackson | 1 | 5.6K | 974K | Feb 1994 – Jun 2000 |
| Edwards Unit G-2-148371 | Allegro Investments, Inc. | Miss Mason (2ND Massive) | Goliad | 1 | 5.53K | 119K | Feb 1994 – Dec 1994 |
| Musselman Ranch - Bor G-2-166402 | Allegro Investments, Inc. | McDaniel (Yegua) | Jackson | 1 | 3.02K | 435K | Dec 1997 – Aug 2001 |
| Sappington Farms G-2-182038 | Allegro Investments, Inc. | El Toro, South (6200) | Jackson | 1 | 1.61K | 225K | Jul 2000 – Oct 2003 |
| McLeod Gas Unit G-2-194625 | Allegro Investments, Inc. | Edna, S. (5490) | Jackson | 1 | 1.37K | 631K | Feb 2003 – Dec 2004 |
| Wilbeck G-2-173835 | Allegro Investments, Inc. | Cordele (4850) | Jackson | 1 | 1.11K | 1.28M | Apr 1999 – Nov 2005 |
| Fenner, Katherine G-3-147823 | Allegro Investments, Inc. | Lost Fork (Yegua 6800) | Jackson | 1 | 686 | 602K | Dec 1993 – Oct 1997 |
| Scherer G-2-148207 | Allegro Investments, Inc. | Telferner (2500) | Victoria | 1 | 264 | 18.2K | Jan 1994 – Feb 1994 |
| Stafford G-2-151500 | Allegro Investments, Inc. | Wayside Chapel, East (Yegua) | Jackson | 1 | 261 | 205K | Jul 1994 – Aug 2002 |
| City Corpus Christi G-4-92058 | Allegro Investments, Inc. | Lou Ella (Vicksburg 4800) | San Patricio | 1 | 138 | 197K | Jan 1993 – Sep 2006 |
| Johnson Foundation G-2-176788 | Allegro Investments, Inc. | Cordele (4500) | Jackson | 1 | 138 | 375K | Mar 2000 – Oct 2004 |
| Scherer G-2-149073 | Allegro Investments, Inc. | Telferner, N.E. (2150) | Victoria | 1 | 127 | 43.1K | Mar 1994 – Jun 1995 |
| Traylor G-2-193597 | Allegro Investments, Inc. | Maude B. Traylor, N. (29 Seg. A) | Jackson | 1 | 96 | 4.23K | Mar 2001 – May 2001 |
| Webb, Patricia F. G-4-150228 | Allegro Investments, Inc. | Hibernia (5590) | San Patricio | 1 | 73 | 29.1K | May 1994 – Mar 1995 |
| Marthiljohni G-2-188836 | Allegro Investments, Inc. | Bright Falcon (Frio 5160) | Jackson | 1 | 28 | 87K | Jun 2001 – May 2003 |
| Daniel Estate Unit HSL G-2-157148 | Allegro Investments, Inc. | McDaniel (3850) | Jackson | 1 | 15 | 545K | Jan 1996 – Nov 2001 |
| McCan, C.K. G-2-132170 | Allegro Investments, Inc. | Welder Ranch (Frio E) | Victoria | 1 | 3 | 186K | Jan 1993 – Apr 1996 |
| Young Sisters G-2-186471 | Allegro Investments, Inc. | Collier (4500) | Jackson | 1 | 3 | 73.9K | Apr 2001 – Nov 2002 |
| Webb, Patricia F. G-4-148391 | Allegro Investments, Inc. | Hibernia (4480) | San Patricio | 1 | 2 | 15.5K | Feb 1994 – May 1994 |
| Marks G-2-148609 | Allegro Investments, Inc. | Terrell Point (Catahoula) | Goliad | 1 | 2 | 623K | Jan 1994 – Apr 2005 |
| Cartwright, Holman G-2-118987 | Allegro Investments, Inc. | Mt. Lucas (Vicksburg 3600) | Live Oak | 1 | 2 | 74.2K | Jan 1993 – Nov 1996 |
| Ormand - Robinson Unit - Rob G-2-157129 | Allegro Investments, Inc. | McDaniel (4100) | Jackson | 1 | 0 | 736K | Jan 1996 – Feb 2002 |
| Robinson Ranch - Rob G-2-157126 | Allegro Investments, Inc. | McDaniel (3460) | Jackson | 1 | 0 | 311K | Jan 1996 – Nov 1999 |
| McCan, C. K. G-2-157122 | Allegro Investments, Inc. | Welder Ranch (3400) | Victoria | 1 | 0 | 8.2K | Dec 1995 – May 1996 |
| Robinson Ranch - Rob G-2-156768 | Allegro Investments, Inc. | McDaniel (4100) | Jackson | 1 | 0 | 51.5K | Dec 1995 – Aug 1998 |
| Bammert G-2-143843 | Allegro Investments, Inc. | Goliad (Catahoula) | Goliad | 1 | 0 | 171K | Jan 1993 – Oct 1995 |
| McCan, C. K. G-2-117076 | Allegro Investments, Inc. | Welder Ranch (Frio F) | Victoria | 1 | 0 | 0 | — |
| Robinson Ranch - Rob G-2-155785 | Allegro Investments, Inc. | McDaniel (4340) | Jackson | 1 | 0 | 223K | Sep 1995 – Feb 2000 |
| Robinson Ranch - Rob G-2-155603 | Allegro Investments, Inc. | McDaniel (4100) | Jackson | 1 | 0 | 164K | Aug 1995 – Feb 2000 |
| McCan, C. K. G-2-142498 | Allegro Investments, Inc. | Gravel (Miocene 2200) | Victoria | 1 | 0 | 4.5K | Feb 1993 – May 1993 |
| Schaefer-Buckner-HSL G-2-155160 | Allegro Investments, Inc. | McDaniel (3750) | Jackson | 1 | 0 | 378K | Jul 1995 – Sep 1999 |
| Welder, J. F. Heirs G-2-155043 | Allegro Investments, Inc. | Greta (L- 3) | Refugio | 1 | 0 | 48.8K | Apr 1995 – Apr 1997 |
| Robinson G-2-134516 | Allegro Investments, Inc. | Robinson Ranch (Miocene 2300) | Jackson | 1 | 0 | 0 | — |
| Welder, J. F. Heirs G-2-109381 | Allegro Investments, Inc. | Greta (L- 5) | Refugio | 1 | 0 | 0 | — |
| Oconnor, Dennis et Al G-2-83323 | Allegro Investments, Inc. | Telferner (1450) | Victoria | 1 | 0 | 0 | — |
| Ormand - Ormd G-2-160784 | Allegro Investments, Inc. | McDaniel (4340) | Jackson | 1 | 0 | 142K | Nov 1996 – Jan 2001 |
| McCan, C. K. G-2-160518 | Allegro Investments, Inc. | Salem (1550) | Victoria | 1 | 0 | 121K | Aug 1996 – Oct 1998 |
| McCan, C. K. G-2-161422 | Allegro Investments, Inc. | Welder Ranch (3750) | Victoria | 1 | 0 | 173K | Aug 1996 – Sep 1999 |
| J. C. Thompson Gas Unit G-2-163780 | Allegro Investments, Inc. | Goliad (Frio 2970) | Goliad | 1 | 0 | 318K | May 1997 – Sep 2000 |
| Schaefer-Buckner - HSL G-2-159524 | Allegro Investments, Inc. | McDaniel (4100) | Jackson | 1 | 0 | 174K | Apr 1996 – Oct 2002 |
| Schaefer-Buckner - HSL G-2-159520 | Allegro Investments, Inc. | McDaniel (3460) | Jackson | 1 | 0 | 38.7K | Apr 1996 – May 1997 |