| 678153Amendment | Mar 12, 2009 | Mar 12, 2009 | Highmount Expl & Prod Texas LLC | Jones Ranch 157 #2 | 7,750 | 43539170 |
| 678834 | Feb 27, 2009 | Feb 27, 2009 | Highmount Expl & Prod Texas LLC | Mayer Ranch 36 #4 | 8,750 | 43539173 |
| 678017 | Feb 26, 2009 | Feb 26, 2009 | Highmount Expl & Prod Texas LLC | Bloodworth 140 #7 | 7,700 | 43535259 |
| 678560 | Feb 13, 2009 | Feb 13, 2009 | Highmount Expl & Prod Texas LLC | Cauthorn 17 #4 | 7,700 | 43539172 |
| 678274 | Feb 6, 2009 | Feb 6, 2009 | Highmount Expl & Prod Texas LLC | Stewart #319 | 4,850 | 43539171 |
| 678087 | Feb 6, 2009 | Feb 6, 2009 | Highmount Expl & Prod Texas LLC | Shurley #149 | 6,450 | 43539164 |
| 678174 | Feb 5, 2009 | Feb 5, 2009 | Highmount Expl & Prod Texas LLC | Friess 8 #5 | 6,250 | 43539169 |
| 678173 | Feb 5, 2009 | Feb 5, 2009 | Highmount Expl & Prod Texas LLC | Friess 8 #6 | 6,250 | 43539168 |
| 678153 | Feb 5, 2009 | Feb 5, 2009 | Highmount Expl & Prod Texas LLC | Jones Ranch 157 #2 | 7,750 | 43539170 |
| 678095 | Feb 3, 2009 | Feb 3, 2009 | Highmount Expl & Prod Texas LLC | Johnson 62 #5 | 5,250 | 43539167 |
| 678091 | Feb 3, 2009 | Feb 3, 2009 | Highmount Expl & Prod Texas LLC | Shurley #153 | 6,475 | 43539166 |
| 678086 | Feb 3, 2009 | Feb 3, 2009 | Highmount Expl & Prod Texas LLC | Shurley #147 | 6,400 | 43539163 |
| 678083 | Feb 3, 2009 | Feb 3, 2009 | Highmount Expl & Prod Texas LLC | Shurley #143 | 6,400 | 43539165 |
| 678082 | Feb 3, 2009 | Feb 3, 2009 | Highmount Expl & Prod Texas LLC | Shurley #139 | 6,450 | 43539162 |
| 678081 | Feb 3, 2009 | Feb 3, 2009 | Highmount Expl & Prod Texas LLC | Shurley #152 | 6,500 | 43539161 |
| 678026 | Feb 2, 2009 | Feb 2, 2009 | Highmount Expl & Prod Texas LLC | Hicks 61 #6 | 5,250 | 43539159 |
| 678021 | Feb 2, 2009 | Feb 2, 2009 | Highmount Expl & Prod Texas LLC | Hicks 61 #5 | 5,250 | 43539158 |
| 677126 | Jan 30, 2009 | Jan 30, 2009 | Highmount Expl & Prod Texas LLC | Mittel RH #12 | 7,500 | 43539160 |
| 677023 | Jan 30, 2009 | Jan 30, 2009 | Highmount Expl & Prod Texas LLC | Mayer Ranch 40 #8 | 8,850 | 43539146 |
| 677501 | Jan 29, 2009 | Jan 29, 2009 | Highmount Expl & Prod Texas LLC | Hill-Mayer, Edwin S Jr "P" #8 | 8,450 | 43539155 |
| 677128 | Jan 29, 2009 | Jan 29, 2009 | Highmount Expl & Prod Texas LLC | Meckel A #75 | 6,850 | 43539147 |
| 677703 | Jan 28, 2009 | Jan 28, 2009 | Highmount Expl & Prod Texas LLC | Hill Mayer Edwin S Jr CC #7 | 8,600 | 43539156 |
| 677699 | Jan 28, 2009 | Jan 28, 2009 | Highmount Expl & Prod Texas LLC | Hill-Mayer, Minnie H. "C" #8 | 8,450 | 43539157 |
| 677320 | Jan 26, 2009 | Jan 26, 2009 | Highmount Expl & Prod Texas LLC | Pfluger SWD #104 | 8,450 | 43539152 |
| 677363 | Jan 21, 2009 | Jan 21, 2009 | Highmount Expl & Prod Texas LLC | Mayer 15 #23 | 8,750 | 43539154 |
| 677361 | Jan 21, 2009 | Jan 21, 2009 | Highmount Expl & Prod Texas LLC | Mayer 15 #22 | 8,750 | 43539153 |
| 647655Amendment | Jan 20, 2009 | Jan 20, 2009 | Highmount Expl & Prod Texas LLC | Cusenbary 58 #8 | 6,750 | 43538729 |
| 677307 | Jan 16, 2009 | Jan 16, 2009 | Highmount Expl & Prod Texas LLC | Pfluger 86 #8 | 7,250 | 43539151 |
| 677168 | Jan 14, 2009 | Jan 14, 2009 | Highmount Expl & Prod Texas LLC | Pfluger 110 #12 | 5,850 | 43539149 |
| 677163 | Jan 14, 2009 | Jan 14, 2009 | Highmount Expl & Prod Texas LLC | Pfluger 110 #11 | 7,000 | 43539150 |
| 677136 | Jan 14, 2009 | Jan 14, 2009 | Highmount Expl & Prod Texas LLC | Pfluger 103 #12 | 6,750 | 43539148 |
| 676911 | Jan 9, 2009 | Jan 9, 2009 | Highmount Expl & Prod Texas LLC | Nicks Gerald 8 #5 | 9,150 | 43539144 |
| 676846 | Jan 7, 2009 | Jan 7, 2009 | Highmount Expl & Prod Texas LLC | Stewart SWD #3 | 7,250 | 43539145 |
| 676823 | Jan 7, 2009 | Jan 7, 2009 | Highmount Expl & Prod Texas LLC | Dunbar, Ned #83 | 6,600 | 43539143 |
| 676633 | Jan 5, 2009 | Jan 5, 2009 | Zephyr Lone Star Oper Co.,l.l.c. | Vanderstucken "A" #6 | 4,805 | 43533668 |
| 675748 | Jan 2, 2009 | Jan 2, 2009 | Highmount Expl & Prod Texas LLC | Canyon Ranch 126 #20S | 7,250 | 43539139 |
| 675742 | Jan 2, 2009 | Jan 2, 2009 | Highmount Expl & Prod Texas LLC | Canyon Ranch 126 #21S | 7,250 | 43539138 |
| 676241 | Dec 30, 2008 | Dec 30, 2008 | Highmount Expl & Prod Texas LLC | Mayer Ranch 40 #10 | 8,850 | 43539142 |
| 676023 | Dec 30, 2008 | Dec 30, 2008 | Highmount Expl & Prod Texas LLC | Dunbar, Ned #82 | 6,600 | 43539140 |
| 676027 | Dec 16, 2008 | Dec 16, 2008 | Highmount Expl & Prod Texas LLC | Dunbar, Ned #86 | 6,600 | 43539141 |
| 675732 | Dec 4, 2008 | Dec 4, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch 126 #19S | 7,250 | 43539137 |
| 675410 | Nov 25, 2008 | Nov 25, 2008 | Highmount Expl & Prod Texas LLC | Fawcett 131 #3 | 8,800 | 43539352 |
| 675155 | Nov 21, 2008 | Nov 21, 2008 | Highmount Expl & Prod Texas LLC | Fields 20 #7RD | 7,600 | 43539135 |
| 674849 | Nov 21, 2008 | Nov 21, 2008 | Highmount Expl & Prod Texas LLC | Mayer Ranch "DD" #2805 | 8,450 | 43539134 |
| 674845 | Nov 17, 2008 | Nov 17, 2008 | Highmount Expl & Prod Texas LLC | Mayer Ranch "40" #9 | 8,850 | 43539133 |
| 674468 | Nov 14, 2008 | Nov 14, 2008 | Highmount Expl & Prod Texas LLC | Ward 114 #26X | 8,250 | 43539132 |
| 670893 | Oct 28, 2008 | Oct 28, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch #2163S | 7,250 | 43539131 |
| 672918 | Oct 17, 2008 | Oct 17, 2008 | Highmount Expl & Prod Texas LLC | Mayer Ranch "CC" #2704 | 8,500 | 43539125 |
| 672913 | Oct 17, 2008 | Oct 17, 2008 | Highmount Expl & Prod Texas LLC | Mayer Ranch "BB" #2603 | 8,300 | 43539126 |
| 672911 | Oct 17, 2008 | Oct 17, 2008 | Highmount Expl & Prod Texas LLC | Simmons 3 #5 | 8,450 | 43539124 |
| 672436 | Oct 17, 2008 | Oct 17, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch 114 #20S | 7,475 | 43539130 |
| 672909 | Oct 16, 2008 | Oct 16, 2008 | Highmount Expl & Prod Texas LLC | Lancaster 185 #5 | 8,475 | 43539123 |
| 672628 | Oct 14, 2008 | Oct 14, 2008 | Highmount Expl & Prod Texas LLC | Epps, H.C. #39 #14 | 7,500 | 43539119 |
| 672439 | Oct 14, 2008 | Oct 14, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch 114 #21S | 7,400 | 43539122 |
| 672378 | Oct 14, 2008 | Oct 14, 2008 | Highmount Expl & Prod Texas LLC | Epps, H. C. #49 #4 | 7,150 | 43539111 |
| 672681 | Oct 13, 2008 | Oct 13, 2008 | Highmount Expl & Prod Texas LLC | Simmons 72.5 #5 | 8,375 | 43539121 |
| 672559 | Oct 13, 2008 | Oct 13, 2008 | Highmount Expl & Prod Texas LLC | Sawyer Jones #1711 | 9,250 | 43539118 |
| 672541 | Oct 13, 2008 | Oct 13, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch 114 #19S | 7,500 | 43539115 |
| 672557 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch #8317S | 5,950 | 43539117 |
| 672556 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch #8318S | 5,950 | 43539116 |
| 672410 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Holman #268 | 7,250 | 43539114 |
| 672408 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Epps, HC # 39 #9 | 7,050 | 43539112 |
| 672408Amendment | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Epps, HC # 39 #9 | 7,050 | 43539112 |
| 672407 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Cauthorn 16 #6 | 7,200 | 43539113 |
| 672379 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Epps, H.C. #49 #5 | 7,050 | 43539110 |
| 672324 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Epps, H.C. #38 #10 | 7,350 | 43539108 |
| 672307 | Oct 11, 2008 | Oct 11, 2008 | Highmount Expl & Prod Texas LLC | Cauthorn 16 #7 | 7,150 | 43539107 |
| 672654 | Oct 10, 2008 | Oct 10, 2008 | Highmount Expl & Prod Texas LLC | Simmons 72.5 #4 | 8,375 | 43539120 |
| 669878 | Oct 10, 2008 | Oct 10, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch #1277S | 7,000 | 43539083 |
| 669876 | Oct 10, 2008 | Oct 10, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch #1276S | 7,000 | 43539082 |
| 672063 | Oct 9, 2008 | Oct 9, 2008 | Highmount Expl & Prod Texas LLC | Stewart #3014 | 5,750 | 43539106 |
| 672059 | Oct 8, 2008 | Oct 8, 2008 | Highmount Expl & Prod Texas LLC | Holman #266 | 7,800 | 43539105 |
| 672059Amendment | Oct 8, 2008 | Oct 8, 2008 | Highmount Expl & Prod Texas LLC | Holman #266 | 7,800 | 43539105 |
| 671387 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 40 #24 | 8,750 | 43539103 |
| 671386 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 40 #23 | 8,710 | 43539104 |
| 671368 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Morriss 82 #8 | 6,400 | 43539102 |
| 671326 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 40 #22 | 8,700 | 43539101 |
| 671295 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 46 #30 | 8,625 | 43539100 |
| 671294 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 46 #29 | 8,650 | 43539099 |
| 671291 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 46 #28 | 8,700 | 43539097 |
| 671290 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 46 #27 | 8,650 | 43539096 |
| 671289 | Oct 3, 2008 | Oct 3, 2008 | Highmount Expl & Prod Texas LLC | Mayfield 46 #26 | 8,700 | 43539098 |
| 671067 | Oct 2, 2008 | Oct 2, 2008 | Highmount Expl & Prod Texas LLC | Pfluger 85 #21 | 7,950 | 43539093 |
| 671217 | Oct 1, 2008 | Oct 1, 2008 | Highmount Expl & Prod Texas LLC | Jones Ranch 157 #1 | 7,550 | 43539095 |
| 671217Amendment | Oct 1, 2008 | Oct 1, 2008 | Highmount Expl & Prod Texas LLC | Jones Ranch 157 #1 | 7,550 | 43539095 |
| 671157 | Sep 30, 2008 | Sep 30, 2008 | Highmount Expl & Prod Texas LLC | Simmons 3 #11 | 8,500 | 43539094 |
| 671009 | Sep 26, 2008 | Sep 26, 2008 | Highmount Expl & Prod Texas LLC | Lancaster 185 #4 | 8,450 | 43539092 |
| 671009Amendment | Sep 26, 2008 | Sep 26, 2008 | Highmount Expl & Prod Texas LLC | Lancaster 185 #4 | 8,450 | 43539092 |
| 670956 | Sep 26, 2008 | Sep 26, 2008 | Highmount Expl & Prod Texas LLC | Nicks,gerald 8 #4 | 8,850 | 43539091 |
| 670892 | Sep 26, 2008 | Sep 26, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch #2164S | 7,250 | 43539090 |
| 670708 | Sep 25, 2008 | Sep 25, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch #2073S | 7,250 | 43539089 |
| 670135 | Sep 17, 2008 | Sep 17, 2008 | Highmount Expl & Prod Texas LLC | Stewart #3015 | 5,750 | 43539087 |
| 670100 | Sep 17, 2008 | Sep 17, 2008 | Highmount Expl & Prod Texas LLC | Stewart #3016 | 5,750 | 43539086 |
| 670078 | Sep 16, 2008 | Sep 16, 2008 | Highmount Expl & Prod Texas LLC | Stewart #3012 | 5,750 | 43539088 |
| 670074 | Sep 16, 2008 | Sep 16, 2008 | Highmount Expl & Prod Texas LLC | Stewart #3013 | 5,750 | 43539085 |
| 669960 | Sep 16, 2008 | Sep 16, 2008 | Highmount Expl & Prod Texas LLC | Cusenbary 58 #10 | 6,250 | 43539084 |
| 669681 | Sep 15, 2008 | Sep 15, 2008 | Highmount Expl & Prod Texas LLC | Canyon Ranch SWD #115 | 8,450 | 43539081 |
| 669162 | Sep 12, 2008 | Sep 12, 2008 | Highmount Expl & Prod Texas LLC | Simmons 72 #18 | 8,550 | 43539075 |
| 669162Amendment | Sep 12, 2008 | Sep 12, 2008 | Highmount Expl & Prod Texas LLC | Simmons 72 #18 | 8,550 | 43539075 |
| 666251 | Sep 11, 2008 | Sep 11, 2008 | Mariner Energy, Inc. | Mayer #17A | 10,000 | 43539054 |