| 501 | STATE | Huerfano County, CO | Gas Property | Jul 2007 |
| 502 | STATE | Washington County, CO | Oil Property | Jul 2021 |
| 503 | STATE | Lincoln County, CO | Oil Property | Jul 2007 |
| 504 | STATE | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 505 | STATE | Weld County, CO | Oil & Gas Property | Jun 2024 |
| 506 | STATE | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 507 | STATE | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 508 | STATE | Yuma County, CO | Gas Property | Nov 2025 |
| 509 | STATE | Jackson County, CO | Oil Property | Jun 2022 |
| 510 | STATE | Bent County, CO | Oil & Gas Property | Mar 2024 |
| 511 | STATE | Logan County, CO | Oil & Gas Property | Nov 2025 |
| 512 | STATE | Routt County, CO | Oil & Gas Property | Jan 2010 |
| 513 | STATE | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 514 | STATE | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 515 | STATE | Yuma County, CO | Oil & Gas Property | Nov 2025 |
| 516 | STATE | Yuma County, CO | Gas Property | Nov 2025 |
| 517 | STATE | Weld County, CO | Oil & Gas Property | Apr 2019 |
| 518 | STATE | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 519 | STATE | Washington County, CO | Gas Property | Dec 2025 |
| 520 | STATE | La Plata County, CO | Gas Property | Nov 2025 |
| 521 | STATE | Weld County, CO | Oil & Gas Property | Sep 2015 |
| 522 | STATE | Phillips County, CO | Gas Property | Sep 2023 |
| 523 | STATE | Logan County, CO | Oil & Gas Property | Nov 2025 |
| 524 | STATE | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 525 | STATE | Yuma County, CO | Gas Property | Nov 2025 |
| 526 | STATE | La Plata County, CO | Gas Property | Nov 2025 |
| 527 | STATE | Kiowa County, CO | Gas Property | Jul 2025 |
| 528 | STATE | Yuma County, CO | Gas Property | Nov 2025 |
| 529 | STATE | Weld County, CO | Oil & Gas Property | Feb 2021 |
| 530 | STATE | San Miguel County, CO | Oil & Gas Property | Sep 2023 |
| 531 | STATE | Logan County, CO | Oil & Gas Property | Aug 2009 |
| 532 | STATE | Moffat County, CO | Oil & Gas Property | Sep 2024 |
| 533 | STATE | Weld County, CO | Oil & Gas Property | Dec 2024 |
| 534 | STATE | Logan County, CO | Oil & Gas Property | Apr 2025 |
| 535 | STATE | Washington County, CO | Oil Property | Nov 2025 |
| 536 | STATE | Moffat County, CO | Oil & Gas Property | Jan 2026 |
| 537 | STATE | Yuma County, CO | Gas Property | Nov 2025 |
| 538 | STATE | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 539 | STATE | Weld County, CO | Oil Property | Mar 2024 |
| 540 | STATE | Washington County, CO | Oil Property | Aug 2006 |
| 541 | STATE | Logan County, CO | Oil & Gas Property | May 2014 |
| 542 | STATE | Washington County, CO | Oil Property | Dec 2025 |
| 543 | STATE | Washington County, CO | Oil Property | Apr 2025 |
| 544 | STATE | Prowers County, CO | Oil & Gas Property | Nov 2025 |
| 545 | STATE | Weld County, CO | Oil & Gas Property | Jun 2022 |
| 546 | STATE | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 547 | STATE | Washington County, CO | Oil Property | Dec 2025 |
| 548 | STATE | Prowers County, CO | Oil & Gas Property | Apr 2024 |
| 549 | STATE | Logan County, CO | Oil & Gas Property | Nov 1999 |
| 550 | STATE | Arapahoe County, CO | Oil Property | Dec 2025 |
| 551 | STATE | Kiowa County, CO | Oil & Gas Property | Jun 2019 |
| 552 | STATE 01-24 1 | La Plata County, CO | Gas Property | Nov 2025 |
| 553 | STATE 1 | Adams County, CO | Oil & Gas Property | Sep 2018 |
| 554 | STATE 16 | Weld County, CO | Oil & Gas Property | Aug 2025 |
| 555 | STATE 16-1 | Weld County, CO | Oil & Gas Property | Sep 2019 |
| 556 | STATE 36 | Weld County, CO | Oil & Gas Property | Mar 2017 |
| 557 | STATE 36 | Yuma County, CO | Gas Property | Nov 2025 |
| 558 | STATE 844-36 | Phillips County, CO | Gas Property | Sep 2023 |
| 559 | STATE A | Adams County, CO | Oil & Gas Property | May 2018 |
| 560 | STATE ANDERSON | Larimer County, CO | Oil & Gas Property | Nov 2025 |
| 561 | STATE ANTELOPE | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 562 | STATE ANTELOPE | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 563 | STATE BIERSTADT 4-65 35-34 | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 564 | STATE BLANCA 1H | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 565 | STATE BOOTH 36 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 566 | STATE C | La Plata County, CO | Gas Property | Nov 2025 |
| 567 | STATE CD | La Plata County, CO | Gas Property | Nov 2025 |
| 568 | STATE CF | La Plata County, CO | Gas Property | Nov 2025 |
| 569 | STATE CHALLENGER 5-65 2-3 3BYH | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 570 | STATE CROW VALLEY | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 571 | STATE DILLARD 16-2 | Weld County, CO | Oil & Gas Property | May 2013 |
| 572 | STATE EHRLICH 36 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 573 | STATE ELBERT 1H | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 574 | STATE HARVARD | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 575 | STATE LA PLATA 5-65 13-1 | Arapahoe County, CO | Oil & Gas Property | Jun 2025 |
| 576 | STATE LAND | Moffat County, CO | Oil & Gas Property | Nov 2025 |
| 577 | STATE MASSIVE | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 578 | STATE MZ | La Plata County, CO | Gas Property | Nov 2025 |
| 579 | STATE NORTH PLATTE | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 580 | STATE OF CO | Arapahoe County, CO | Oil & Gas Property | Dec 2025 |
| 581 | STATE OF CO | Adams County, CO | Oil & Gas Property | Oct 2018 |
| 582 | STATE OF CO 1 | Adams County, CO | Oil & Gas Property | Apr 2023 |
| 583 | STATE OF COLORADO | Weld County, CO | Oil & Gas Property | Jun 2004 |
| 584 | STATE OF COLORADO | Yuma County, CO | Gas Property | Nov 2025 |
| 585 | STATE OF COLORADO | Baca County, CO | Oil & Gas Property | Jan 2017 |
| 586 | STATE OF COLORADO | Moffat County, CO | Oil & Gas Property | Aug 2013 |
| 587 | STATE OF COLORADO | Adams County, CO | Oil & Gas Property | Mar 2016 |
| 588 | STATE OF COLORADO 3 | La Plata County, CO | Gas Property | Nov 2025 |
| 589 | STATE OF COLORADO A | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 590 | STATE OF COLORADO AB | Adams County, CO | Oil & Gas Property | Apr 2017 |
| 591 | STATE OF COLORADO AM | Weld County, CO | Oil & Gas Property | May 2018 |
| 592 | STATE OF COLORADO AS | Las Animas County, CO | Gas Property | Dec 2025 |
| 593 | STATE OF COLORADO AT | Las Animas County, CO | Gas Property | Dec 2025 |
| 594 | STATE OF COLORADO AV | La Plata County, CO | Gas Property | Nov 2025 |
| 595 | STATE OF COLORADO AW | La Plata County, CO | Gas Property | Nov 2025 |
| 596 | STATE OF COLORADO KP | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 597 | STATE OF COLORADO P | Adams County, CO | Oil & Gas Property | Dec 2025 |
| 598 | STATE PETERSON | Weld County, CO | Oil & Gas Property | Oct 2025 |
| 599 | STATE PH FENRIR F16 16 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 600 | STATE PH PROMETHEUS P22 15N-20-01 | Weld County, CO | Oil & Gas Property | Dec 2025 |