| 2801 | MARRS | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2802 | MARRS | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2803 | MARRS STATE 30N-10HZX | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2804 | MARSH | Logan County, CO | Oil Property | Jan 2015 |
| 2805 | MARSHALL | Weld County, CO | Oil & Gas Property | May 2020 |
| 2806 | MARTIN | Adams County, CO | Oil & Gas Property | Jul 2019 |
| 2807 | MARTIN | Phillips County, CO | Gas Property | Aug 2022 |
| 2808 | MARTIN | Weld County, CO | Oil & Gas Property | Apr 2019 |
| 2809 | MARTIN T. HART | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2810 | MARTINEZ | La Plata County, CO | Gas Property | Feb 2024 |
| 2811 | MARTINEZ | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2812 | MARTINEZ | Archuleta County, CO | Oil Property | Sep 2017 |
| 2813 | MARTINEZ | La Plata County, CO | Gas Property | Feb 2024 |
| 2814 | MARTINSON | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2815 | MARWITZ | Morgan County, CO | Oil & Gas Property | Nov 2023 |
| 2816 | MARY CATHERINE 33-7-3 | La Plata County, CO | Gas Property | Feb 2024 |
| 2817 | MARY JANE | Lincoln County, CO | Oil & Gas Property | Mar 2024 |
| 2818 | MARY MILLER | Boulder County, CO | Oil & Gas Property | Apr 2020 |
| 2819 | MASSIVE 19 | Yuma County, CO | Gas Property | Aug 2023 |
| 2820 | MATHEWS | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2821 | MATHIES | Washington County, CO | Gas Property | Feb 2024 |
| 2822 | MATRIX | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2823 | MATSUSHIMA | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 2824 | MATSUSHIMA | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2825 | MAUDLIN GULCH | Moffat County, CO | Oil & Gas Property | Feb 2024 |
| 2826 | MAUL | Adams County, CO | Oil & Gas Property | May 2018 |
| 2827 | MAURICE | Yuma County, CO | Oil & Gas Property | Feb 2024 |
| 2828 | MAVERICK | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2829 | MAVERICK STATE | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2830 | MAXEY | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2831 | MAY JON | Weld County, CO | Oil & Gas Property | Apr 2016 |
| 2832 | MAYBERRY | Baca County, CO | Gas Property | Sep 2007 |
| 2833 | MAYEDA | Weld County, CO | Oil & Gas Property | Mar 2019 |
| 2834 | MAYER | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 2835 | MAYER | Weld County, CO | Oil & Gas Property | May 2021 |
| 2836 | MAYFIELD | La Plata County, CO | Gas Property | Feb 2024 |
| 2837 | MAYNARD | Yuma County, CO | Gas Property | Feb 2024 |
| 2838 | MC 3-1HZ | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2839 | MC 3-2HZ | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2840 | MC 3-3HZ | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2841 | MC 3-4HZ | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2842 | MC 3-5HZ | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2843 | MC 3-6HZ | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2844 | MCCAFFREY STATE LD12-7 | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2845 | MCCALL | Yuma County, CO | Gas Property | Feb 2024 |
| 2846 | MCCALLUM | Jackson County, CO | Oil & Gas Property | Feb 2024 |
| 2847 | MCCALLUM | Jackson County, CO | Oil & Gas Property | Feb 2024 |
| 2848 | MCCALLUM UNIT | Jackson County, CO | Oil & Gas Property | Feb 2024 |
| 2849 | MCCARTHY | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2850 | MCCARTY | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2851 | MCCARTY | Boulder County, CO | Oil & Gas Property | Mar 2022 |
| 2852 | MCCARVILLE | La Plata County, CO | Gas Property | Feb 2024 |
| 2853 | MCCASLAND | Yuma County, CO | Gas Property | Feb 2024 |
| 2854 | MCCATHRON A | La Plata County, CO | Gas Property | Feb 2024 |
| 2855 | MCCAW | La Plata County, CO | Gas Property | Feb 2024 |
| 2856 | MCCLAY | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 2857 | MCCLELLAN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2858 | MCCLELLAN | Weld County, CO | Oil & Gas Property | Feb 2017 |
| 2859 | MCCLELLAN FEDERAL PC LG03-78HN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2860 | MCCLOSKEY | Weld County, CO | Oil & Gas Property | Jun 2017 |
| 2861 | MCCLUNG 29 | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 2862 | MCCONAHAY | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2863 | MCCONLEY | Logan County, CO | Oil Property | May 2015 |
| 2864 | MCCONNELL | Yuma County, CO | Gas Property | Feb 2024 |
| 2865 | MCCONNELL | Yuma County, CO | Gas Property | Feb 2024 |
| 2866 | MCCORMICK | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 2867 | MCCORMICK | Cheyenne County, CO | Oil & Gas Property | Feb 2024 |
| 2868 | MCCOY | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2869 | MCCOY | Weld County, CO | Oil & Gas Property | Nov 2021 |
| 2870 | MCCREATH | Washington County, CO | Gas Property | Feb 2024 |
| 2871 | MCCULLOCH | La Plata County, CO | Gas Property | Dec 2023 |
| 2872 | MCDANIEL | Mesa County, CO | Oil & Gas Property | Jan 2024 |
| 2873 | MCDONALD | Weld County, CO | Oil & Gas Property | Jan 2023 |
| 2874 | MCDONALD | Las Animas County, CO | Gas Property | Feb 2024 |
| 2875 | MCDONALD | Yuma County, CO | Gas Property | Feb 2024 |
| 2876 | MCDONALD | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2877 | MCDONALD | Boulder County, CO | Oil & Gas Property | Feb 2024 |
| 2878 | MCELMO DOME | Montezuma County, CO | Oil & Gas Property | Feb 2024 |
| 2879 | MCELMO DOME UNIT 3 | Montezuma County, CO | Oil & Gas Property | Feb 2024 |
| 2880 | MCELMO DOME UNIT 31-38-18 HB | Montezuma County, CO | Oil & Gas Property | Feb 2024 |
| 2881 | MCELVAIN | La Plata County, CO | Gas Property | Nov 2019 |
| 2882 | MCELVAIN | La Plata County, CO | Gas Property | Feb 2024 |
| 2883 | MCELWAIN | Adams County, CO | Oil & Gas Property | Jul 2021 |
| 2884 | MCELWAIN 12 | Mesa County, CO | Oil & Gas Property | Jan 2024 |
| 2885 | MCGIRR | Larimer County, CO | Oil & Gas Property | Feb 2024 |
| 2886 | MCGLOTHLIN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2887 | MCGLOTHLIN | Weld County, CO | Oil & Gas Property | May 2018 |
| 2888 | MCGLOTHLIN | Weld County, CO | Oil & Gas Property | Nov 2023 |
| 2889 | MCGUCKIN | Weld County, CO | Oil & Gas Property | Nov 2020 |
| 2890 | MCINTOSH | Weld County, CO | Oil & Gas Property | Mar 2017 |
| 2891 | MCINTYRE | Moffat County, CO | Oil & Gas Property | Oct 2015 |
| 2892 | MCINTYRE CANY | San Miguel County, CO | Oil & Gas Property | Nov 2023 |
| 2893 | MCKAY FEDERAL AB02-15 | Weld County, CO | Oil Property | Feb 2024 |
| 2894 | MCKEE | Weld County, CO | Oil & Gas Property | Sep 2017 |
| 2895 | MCKENNEY | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 2896 | MCKENNEY 1 | Weld County, CO | Oil & Gas Property | Mar 2017 |
| 2897 | MCKINLEY | Weld County, CO | Oil & Gas Property | Aug 2017 |
| 2898 | MCKINSTRY | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 2899 | MCLAUGHLIN | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 2900 | MCLAUGHLIN | Rio Blanco County, CO | Oil & Gas Property | Jan 2024 |