| 718791Amendment | Jun 22, 2011 | Jun 22, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 3 #4 | 8,600 | 41332760 |
| 718594 | Jun 20, 2011 | Jun 20, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Reinhardt 6 #11 | 8,550 | 43536733 |
| 716961 | May 31, 2011 | May 31, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke #1713 | 6,500 | 43536589 |
| 716039 | May 12, 2011 | May 12, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Fisher 131 #1 | 7,550 | 43539352 |
| 715074 | Apr 29, 2011 | Apr 29, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Hollenbeck A #5602 | 8,300 | 41332757 |
| 714101 | Apr 26, 2011 | Apr 26, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Jones Ranch #1851 | 8,500 | 43539350 |
| 714555 | Apr 21, 2011 | Apr 21, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Sawyer-Jones #1907 | 9,200 | 43539351 |
| 714026 | Apr 15, 2011 | Apr 15, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 14 #5 | 8,800 | 41332754 |
| 713849 | Apr 13, 2011 | Apr 13, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 10 #3 | 8,850 | 41332753 |
| 713849Amendment | Apr 13, 2011 | Apr 13, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 10 #3 | 8,850 | 41332753 |
| 713849Amendment | Apr 13, 2011 | Apr 13, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 10 #3 | 8,850 | 41332753 |
| 713849Amendment | Apr 13, 2011 | Apr 13, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 10 #3 | 8,850 | 41332753 |
| 713743 | Apr 11, 2011 | Apr 11, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Ranch 36 #10 | 8,750 | 43539349 |
| 713185 | Apr 1, 2011 | Apr 1, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 1 #3 | 8,550 | 41332749 |
| 712963 | Mar 30, 2011 | Mar 30, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 3 #3 | 8,650 | 41332748 |
| 712185 | Mar 24, 2011 | Mar 24, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 54-23 #4 | 8,700 | 41332746 |
| 712185Amendment | Mar 24, 2011 | Mar 24, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 54-23 #4 | 8,700 | 41332746 |
| 712185Amendment | Mar 24, 2011 | Mar 24, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 54-23 #4 | 8,700 | 41332746 |
| 712303 | Mar 22, 2011 | Mar 22, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Rousselot Doris Mayer 26 #1 | 8,650 | 41332744 |
| 712194 | Mar 18, 2011 | Mar 18, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #3 | 8,750 | 41332743 |
| 712194Amendment | Mar 18, 2011 | Mar 18, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #3 | 8,750 | 41332743 |
| 712194Amendment | Mar 18, 2011 | Mar 18, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #3 | 8,750 | 41332743 |
| 712154 | Mar 18, 2011 | Mar 18, 2011 | Highmount Expl & Prod Texas LLC | Crockett | University 56-3 #1 | 8,800 | 10541263 |
| 712136 | Mar 18, 2011 | Mar 18, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Meador 57 #11 | 8,350 | 41332742 |
| 712136Amendment | Mar 18, 2011 | Mar 18, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Meador 57 #11 | 8,350 | 41332742 |
| 709800 | Mar 9, 2011 | Mar 9, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #11 | 8,850 | 41332734 |
| 711161 | Mar 7, 2011 | Mar 7, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Nixon 177 #11 | 4,000 | 41332516 |
| 711151 | Mar 7, 2011 | Mar 7, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 171 #15 | 5,000 | 43536755 |
| 711151Amendment | Mar 7, 2011 | Mar 7, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 171 #15 | 5,000 | 43536755 |
| 710995 | Mar 1, 2011 | Mar 1, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Pfluger 85 #8 | 5,000 | 43534295 |
| 710910 | Feb 28, 2011 | Feb 28, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Rousselot Doris MA #21 | 8,350 | 41332740 |
| 710902 | Feb 25, 2011 | Feb 25, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #16 | 8,750 | 41332739 |
| 710900 | Feb 25, 2011 | Feb 25, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #15 | 8,750 | 41332738 |
| 710898 | Feb 25, 2011 | Feb 25, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #13 | 8,750 | 41332737 |
| 710897 | Feb 25, 2011 | Feb 25, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #12 | 8,750 | 41332741 |
| 710897Amendment | Feb 25, 2011 | Feb 25, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #12 | 8,750 | 41332741 |
| 709056 | Feb 23, 2011 | Feb 23, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #10 | 8,800 | 41332730 |
| 710306 | Feb 17, 2011 | Feb 17, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #14 | 8,750 | 41332736 |
| 710306Amendment | Feb 17, 2011 | Feb 17, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #14 | 9,800 | 41332736 |
| 710147 | Feb 14, 2011 | Feb 14, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 176 #15 | 6,243 | 43539195 |
| 709917 | Feb 11, 2011 | Feb 11, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Vanderstucken J M #5 | 8,975 | 43535426 |
| 709404 | Feb 1, 2011 | Feb 1, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1610 | 8,600 | 41332733 |
| 709404Amendment | Feb 1, 2011 | Feb 1, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1610 | 9,700 | 41332733 |
| 709237 | Jan 31, 2011 | Jan 31, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Randee Fawcett Trust 'B' #18RS | 9,000 | 43539348 |
| 709230 | Jan 28, 2011 | Jan 28, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Bloodworth 140 #10SW | 8,800 | 43539347 |
| 709198 | Jan 28, 2011 | Jan 28, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 14 #4 | 8,850 | 41332732 |
| 709053 | Jan 28, 2011 | Jan 28, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #2504 | 8,700 | 41332731 |
| 708951 | Jan 26, 2011 | Jan 26, 2011 | Highmount Expl & Prod Texas LLC | Schleicher | Parmer 30 #7 | 8,975 | 41332729 |
| 708817 | Jan 24, 2011 | Jan 24, 2011 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Ranch 36 #9 | 8,850 | 43539346 |
| 703696 | Dec 29, 2010 | Dec 29, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Hill Mayer Edwin S Jr H #4 | 8,500 | 43539340 |
| 707409 | Dec 27, 2010 | Dec 27, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 173 #20X | 9,450 | 43539345 |
| 707203 | Dec 21, 2010 | Dec 21, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 171 #10 | 5,000 | 43536863 |
| 707203Amendment | Dec 21, 2010 | Dec 21, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 171 #10 | 5,000 | 43536863 |
| 707202 | Dec 20, 2010 | Dec 20, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke #1718 | 5,000 | 43536743 |
| 707192 | Dec 20, 2010 | Dec 20, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayfield 41 #15 | 3,500 | 43537219 |
| 707074 | Dec 20, 2010 | Dec 20, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1609 | 8,400 | 41332720 |
| 707186 | Dec 17, 2010 | Dec 17, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayfield 41 #9 | 3,410 | 43536741 |
| 707186Amendment | Dec 17, 2010 | Dec 17, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayfield 41 #9 | 3,410 | 43536741 |
| 707186Amendment | Dec 17, 2010 | Dec 17, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayfield 41 #9 | 8,550 | 43536741 |
| 707069 | Dec 17, 2010 | Dec 17, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1608 | 8,400 | 41332719 |
| 707061 | Dec 17, 2010 | Dec 17, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1502 | 8,800 | 41332718 |
| 706756 | Dec 16, 2010 | Dec 16, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Holman #2609 | 7,300 | 43539344 |
| 703728 | Dec 16, 2010 | Dec 16, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Hill Mayer Edwin S Jr H #5 | 8,450 | 43539341 |
| 706763 | Dec 13, 2010 | Dec 13, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 10 #2 | 8,850 | 41332717 |
| 706763Amendment | Dec 13, 2010 | Dec 13, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 10 #2 | 8,850 | 41332717 |
| 705782 | Dec 13, 2010 | Dec 13, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Hill-Mayer, Edwin S. Jr. "X" #3 | 8,010 | 43534461 |
| 705642 | Dec 13, 2010 | Dec 13, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Edwin S Jr D 5 #3 | 8,510 | 43538749 |
| 706659 | Dec 10, 2010 | Dec 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 21 #2 | 8,275 | 41332716 |
| 706659Amendment | Dec 10, 2010 | Dec 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 21 #2 | 8,275 | 41332716 |
| 706385 | Dec 8, 2010 | Dec 8, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Reynolds 25 #1 | 8,950 | 41332715 |
| 706383 | Dec 8, 2010 | Dec 8, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 8 #6 | 8,950 | 41332714 |
| 705856 | Nov 23, 2010 | Nov 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 14 #3 | 8,750 | 41332711 |
| 705537 | Nov 19, 2010 | Nov 19, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 113 #16E | 6,900 | 13732095 |
| 705175 | Nov 15, 2010 | Nov 15, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Meador 57 #9 | 8,350 | 41332706 |
| 705157 | Nov 15, 2010 | Nov 15, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Clark 58 #7 | 8,350 | 41332709 |
| 705048 | Nov 10, 2010 | Nov 10, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 113 #15E | 6,900 | 13732094 |
| 704998 | Nov 10, 2010 | Nov 10, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayfield 41 #20 | 8,900 | 43539343 |
| 704998Amendment | Nov 10, 2010 | Nov 10, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayfield 41 #20 | 8,900 | 43539343 |
| 704851 | Nov 8, 2010 | Nov 8, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 106 #13E | 6,900 | 13732093 |
| 703436 | Nov 5, 2010 | Nov 5, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Shurley RR 5 #7 | 7,400 | 43539338 |
| 703432 | Nov 5, 2010 | Nov 5, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Shurley RR 1C #4 | 7,400 | 43539337 |
| 703395 | Nov 5, 2010 | Nov 5, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Shurley RR 2A #8 | 7,620 | 43539336 |
| 704658 | Nov 4, 2010 | Nov 4, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Keene C #4HH | 8,995 | 43539342 |
| 704647 | Nov 4, 2010 | Nov 4, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 113 #17E | 6,800 | 13732092 |
| 704235 | Nov 2, 2010 | Nov 2, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #5 | 8,850 | 41332701 |
| 704367 | Nov 1, 2010 | Nov 1, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1607 | 8,600 | 41332703 |
| 704364 | Nov 1, 2010 | Nov 1, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1606 | 8,600 | 41332702 |
| 702437 | Oct 29, 2010 | Oct 29, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Epps, H.C. #39 #18 | 7,200 | 43539322 |
| 702890 | Oct 26, 2010 | Oct 26, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Parmer 30 #6 | 8,900 | 41332696 |
| 704157 | Oct 22, 2010 | Oct 22, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Randee Fawcett Trust B #10 | 8,400 | 43537311 |
| 704096 | Oct 22, 2010 | Oct 22, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Hollenbeck #1584 | 7,950 | 41332699 |
| 704054 | Oct 22, 2010 | Oct 22, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1605 | 8,600 | 41332698 |
| 703645 | Oct 14, 2010 | Oct 14, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #2502 | 8,800 | 41332697 |
| 703568 | Oct 14, 2010 | Oct 14, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Ward 127 #18 | 4,800 | 43537143 |
| 703568Amendment | Oct 14, 2010 | Oct 14, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Ward 127 #18 | 4,800 | 43537143 |
| 703464 | Oct 14, 2010 | Oct 14, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Ranch FF #3004 | 8,550 | 43539339 |
| 703368 | Oct 13, 2010 | Oct 13, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Edwin S Jr D #403 | 8,700 | 43539335 |
| 701687 | Oct 13, 2010 | Oct 13, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 112 #19E | 7,000 | 13732088 |
| 703004 | Oct 5, 2010 | Oct 5, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Kelly 124 #33 | 6,975 | 43539334 |
| 702923 | Oct 1, 2010 | Oct 1, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 173 #20 | 9,450 | 43539333 |