| 702923Amendment | Oct 1, 2010 | Oct 1, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 173 #20 | 9,450 | 43539333 |
| 702861 | Oct 1, 2010 | Oct 1, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Kelly 126 #30 | 7,025 | 43539329 |
| 702875 | Sep 30, 2010 | Sep 30, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Simmons 3 #13 | 8,450 | 43539332 |
| 702827 | Sep 29, 2010 | Sep 29, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cauthorn 86 #12 | 6,800 | 43539330 |
| 702785 | Sep 29, 2010 | Sep 29, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 175 #4 | 8,975 | 43539331 |
| 700823 | Sep 28, 2010 | Sep 28, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Genini #3927 | 9,350 | 43539317 |
| 702703 | Sep 27, 2010 | Sep 27, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer #59 | 8,650 | 43539328 |
| 702652 | Sep 27, 2010 | Sep 27, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayfield 33 #26 | 8,800 | 43539327 |
| 702583 | Sep 27, 2010 | Sep 27, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Shurley 142 #33 | 7,125 | 43539326 |
| 702578 | Sep 27, 2010 | Sep 27, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Kelly 115 #33 | 6,625 | 43539325 |
| 701905 | Sep 27, 2010 | Sep 27, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Rousselot Doris Mayer A #19 | 7,500 | 41332661 |
| 701905Amendment | Sep 27, 2010 | Sep 27, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Rousselot Doris Mayer A #19 | 7,500 | 41332661 |
| 702662 | Sep 24, 2010 | Sep 24, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1501 | 8,800 | 41332695 |
| 702662Amendment | Sep 24, 2010 | Sep 24, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1501 | 8,800 | 41332695 |
| 702662Amendment | Sep 24, 2010 | Sep 24, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1501 | 8,800 | 41332695 |
| 702559 | Sep 23, 2010 | Sep 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 3 #1 | 8,650 | 41332694 |
| 702559Amendment | Sep 23, 2010 | Sep 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 3 #1 | 8,650 | 41332694 |
| 702559Amendment | Sep 23, 2010 | Sep 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 3 #1 | 8,650 | 41332694 |
| 702558 | Sep 23, 2010 | Sep 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 23 #1 | 8,650 | 41332693 |
| 702558Amendment | Sep 23, 2010 | Sep 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 23 #1 | 8,650 | 41332693 |
| 702558Amendment | Sep 23, 2010 | Sep 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 23 #1 | 8,650 | 41332693 |
| 702558Amendment | Sep 23, 2010 | Sep 23, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 23 #1 | 8,650 | 41332693 |
| 702475 | Sep 22, 2010 | Sep 22, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Epps, H.C. #39 #19 | 7,200 | 43539324 |
| 702446 | Sep 22, 2010 | Sep 22, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Holman #2614 | 7,300 | 43539323 |
| 702244 | Sep 21, 2010 | Sep 21, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Ward 114 #23 | 5,000 | 43538982 |
| 702244Amendment | Sep 21, 2010 | Sep 21, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Ward 114 #23 | 5,000 | 43538982 |
| 702309 | Sep 20, 2010 | Sep 20, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Epps, H.C. #39 #17 | 7,300 | 43539321 |
| 702080 | Sep 15, 2010 | Sep 15, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 112 #18E | 6,900 | 13732090 |
| 701993 | Sep 13, 2010 | Sep 13, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Canyon Ranch 106 #10X | 6,900 | 43539319 |
| 701806 | Sep 13, 2010 | Sep 13, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Ranch K #1004 | 8,550 | 43539320 |
| 701947 | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Meador 178 #14 | 7,975 | 41332692 |
| 701946 | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Meador 178 #15 | 7,975 | 41332691 |
| 701924 | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Edwin S Jr #25 | 8,550 | 43539318 |
| 701913 | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #1 | 7,800 | 41332658 |
| 701913Amendment | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #1 | 7,800 | 41332658 |
| 701913Amendment | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #1 | 7,800 | 41332658 |
| 701913Amendment | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #1 | 8,200 | 41332658 |
| 701895 | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 7 #4 | 7,565 | 41332656 |
| 701895Amendment | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 7 #4 | 7,565 | 41332656 |
| 701883 | Sep 10, 2010 | Sep 10, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 113 #18E | 6,800 | 13732089 |
| 701824 | Sep 9, 2010 | Sep 9, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Hicks 57 #1 | 3,425 | 43531134 |
| 701636 | Sep 7, 2010 | Sep 7, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch 106 #14E | 6,900 | 13732087 |
| 701578 | Sep 7, 2010 | Sep 7, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1703HH | 7,750 | 41332687 |
| 701584 | Sep 3, 2010 | Sep 3, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Hollenbeck #1572 | 8,120 | 41332688 |
| 701584Amendment | Sep 3, 2010 | Sep 3, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Hollenbeck #1572 | 8,120 | 41332688 |
| 701445 | Sep 3, 2010 | Sep 3, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #9 | 8,750 | 41332686 |
| 701444 | Sep 3, 2010 | Sep 3, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #8 | 8,750 | 41332685 |
| 701441 | Sep 3, 2010 | Sep 3, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #7 | 8,750 | 41332684 |
| 701440 | Sep 3, 2010 | Sep 3, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #1 | 8,750 | 41332683 |
| 699703 | Sep 2, 2010 | Sep 2, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Ranch 41 #6 | 8,950 | 43539306 |
| 701280 | Aug 30, 2010 | Aug 30, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 55 1 #1 | 8,400 | 41332680 |
| 701058 | Aug 27, 2010 | Aug 27, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Oglesby 5 #6 | 8,850 | 41332679 |
| 701119 | Aug 26, 2010 | Aug 26, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Ward Rip E #1 | 3,000 | 43530881 |
| 700990 | Aug 23, 2010 | Aug 23, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Ward RC #6 | 4,000 | 43534254 |
| 700821 | Aug 20, 2010 | Aug 20, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #6 | 8,800 | 41332678 |
| 700527 | Aug 19, 2010 | Aug 19, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke #1605 | 9,350 | 43539316 |
| 700526 | Aug 19, 2010 | Aug 19, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke #1603 | 9,350 | 43539315 |
| 700718 | Aug 17, 2010 | Aug 17, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Holman #2613 | 7,300 | 43539314 |
| 700208 | Aug 17, 2010 | Aug 17, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 185 #17 | 9,350 | 43539312 |
| 700594 | Aug 13, 2010 | Aug 13, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Holman #2504 | 7,500 | 43539313 |
| 700487 | Aug 11, 2010 | Aug 11, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 3 #4 | 8,850 | 41332676 |
| 700199 | Aug 11, 2010 | Aug 11, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 184 #11 | 9,350 | 43539311 |
| 700198 | Aug 11, 2010 | Aug 11, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Wilson Duke 176 #14 | 9,350 | 43539310 |
| 700122 | Aug 11, 2010 | Aug 11, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 4 #4 | 8,750 | 41332675 |
| 700170 | Aug 6, 2010 | Aug 6, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Epps, H.C. #39 #16 | 7,300 | 43539309 |
| 700227 | Aug 5, 2010 | Aug 5, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cusenbary 58 #18 | 6,300 | 43539308 |
| 700137 | Aug 4, 2010 | Aug 4, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1702 | 8,850 | 41332673 |
| 700134 | Aug 4, 2010 | Aug 4, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cusenbary 58 #19 | 6,300 | 43539307 |
| 699619 | Jul 28, 2010 | Jul 28, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Powell 13A #1HH | 7,636 | 41332668 |
| 698048 | Jul 21, 2010 | Jul 21, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Parmer 30 #5 | 8,850 | 41332665 |
| 698881 | Jul 14, 2010 | Jul 14, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 24 #6 | 8,650 | 41332631 |
| 698881Amendment | Jul 14, 2010 | Jul 14, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 24 #6 | 8,650 | 41332631 |
| 698881Amendment | Jul 14, 2010 | Jul 14, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 54 24 #6 | 8,650 | 41332631 |
| 697689 | Jul 14, 2010 | Jul 14, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Ryan 19 #3 | 8,850 | 41332662 |
| 698428 | Jul 2, 2010 | Jul 2, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cusenbary WR 39 #10 | 6,250 | 43539304 |
| 698423 | Jul 2, 2010 | Jul 2, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cusenbary WR 39 #13 | 6,250 | 43539303 |
| 698422 | Jul 2, 2010 | Jul 2, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cusenbary WR 39 #14 | 6,250 | 43539305 |
| 698290 | Jul 1, 2010 | Jul 1, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1603 | 8,550 | 41332666 |
| 698290Amendment | Jul 1, 2010 | Jul 1, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1603 | 8,550 | 41332666 |
| 698086 | Jun 25, 2010 | Jun 25, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cusenbary 58 #17 | 6,300 | 43539302 |
| 697951 | Jun 23, 2010 | Jun 23, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Cusenbary 58 #16 | 6,300 | 43539301 |
| 696617 | Jun 23, 2010 | Jun 23, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Ranch 36 #8 | 8,900 | 43539297 |
| 697728 | Jun 21, 2010 | Jun 21, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1604 | 9,450 | 41332664 |
| 697728Amendment | Jun 21, 2010 | Jun 21, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1604 | 9,450 | 41332664 |
| 697725 | Jun 18, 2010 | Jun 18, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1701 | 8,850 | 41332663 |
| 697725Amendment | Jun 18, 2010 | Jun 18, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Marigliano #1701 | 8,850 | 41332663 |
| 697153 | Jun 10, 2010 | Jun 10, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr E #34 | 11,200 | 41332659 |
| 697239 | Jun 9, 2010 | Jun 9, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Canyon Ranch #602S | 6,200 | 43539300 |
| 697182 | Jun 8, 2010 | Jun 8, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Rousselot Doris Mayer A #19 | 8,400 | 41332661 |
| 697163 | Jun 8, 2010 | Jun 8, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr 27 #4 | 8,800 | 41332660 |
| 696163 | Jun 8, 2010 | Jun 8, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | Mayer Edwin S Jr P #14 | 8,975 | 41332655 |
| 697030 | Jun 4, 2010 | Jun 4, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Becker #301 | 9,350 | 43539299 |
| 697030Amendment | Jun 4, 2010 | Jun 4, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Becker #301 | 9,350 | 43539299 |
| 695717 | Jun 4, 2010 | Jun 4, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Ranch 36 #1 | 8,675 | 43538641 |
| 696975 | Jun 3, 2010 | Jun 3, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Becker #303 | 8,500 | 43539298 |
| 696975Amendment | Jun 3, 2010 | Jun 3, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Becker #303 | 9,350 | 43539298 |
| 696965 | Jun 3, 2010 | Jun 3, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch #9112E | 7,100 | 13732084 |
| 696949 | Jun 3, 2010 | Jun 3, 2010 | Highmount Expl & Prod Texas LLC | Schleicher | University 57 2 #1 | 8,500 | 41332658 |
| 696893 | Jun 2, 2010 | Jun 2, 2010 | Highmount Expl & Prod Texas LLC | Edwards | Canyon Ranch #9113E | 7,000 | 13732083 |
| 696690 | Jun 2, 2010 | Jun 2, 2010 | Highmount Expl & Prod Texas LLC | Sutton | Mayer Edwin S Jr #803 | 8,400 | 43534920 |