| 4301 | SHIDELER | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4302 | SHIDELER | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4303 | SHIDELER FEDER | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4304 | SHIELDS 2-6 | La Plata County, CO | Gas Property | Sep 2025 |
| 4305 | SHINNECOCK | Kiowa County, CO | Gas Property | Jun 2003 |
| 4306 | SHIVELY | Adams County, CO | Oil & Gas Property | Sep 2021 |
| 4307 | SHIVELY | Yuma County, CO | Gas Property | Sep 2025 |
| 4308 | SHIVERS | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 4309 | SHOEMAKER | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 4310 | SHOEMAKER 01-34 | La Plata County, CO | Gas Property | Sep 2025 |
| 4311 | SHOENEMAN | Weld County, CO | Oil & Gas Property | Sep 2014 |
| 4312 | SHOOK 3-10 | Adams County, CO | Oil & Gas Property | Sep 2025 |
| 4313 | SHORE 16 | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4314 | SHORE FEDERAL 16-1 | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4315 | SHORT | Yuma County, CO | Oil & Gas Property | Sep 2025 |
| 4316 | SHORTY | Morgan County, CO | Oil & Gas Property | May 2023 |
| 4317 | SHOVELER FED | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4318 | SHOVELER GOLDENEYE FED 21-16-1HN | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4319 | SHOVELER HUNT FED 19-24-16HN | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4320 | SHOWERS | Weld County, CO | Oil & Gas Property | Apr 2021 |
| 4321 | SHUFLY STATE Y34-7 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4322 | SHULL | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4323 | SHULTZ | Weld County, CO | Oil & Gas Property | Apr 2023 |
| 4324 | SHULTZ | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 4325 | SHUPE 13 | Weld County, CO | Oil & Gas Property | Jan 2023 |
| 4326 | SHUR VIEW | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4327 | SHUTT | Weld County, CO | Oil & Gas Property | Aug 2014 |
| 4328 | SICKLER | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4329 | SIDNEY STREAR | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4330 | SIDWELL | Weld County, CO | Oil & Gas Property | Dec 2015 |
| 4331 | SIEBRING | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4332 | SIERRA M | Arapahoe County, CO | Oil & Gas Property | Sep 2025 |
| 4333 | SIEVERS | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 4334 | SIEVERS | Weld County, CO | Oil & Gas Property | Sep 2020 |
| 4335 | SIGG | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4336 | SILT VALLEY | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4337 | SILVA | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 4338 | SILVERBACK | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4339 | SILVERTON 5 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4340 | SIMINOE | Mesa County, CO | Oil & Gas Property | Jul 2017 |
| 4341 | SIMMONS | Yuma County, CO | Gas Property | Oct 2025 |
| 4342 | SIMMONS | Yuma County, CO | Gas Property | Sep 2025 |
| 4343 | SIMMONS | La Plata County, CO | Gas Property | Sep 2025 |
| 4344 | SIMMONS | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 4345 | SIMMS | La Plata County, CO | Gas Property | Sep 2025 |
| 4346 | SIMON LAND & CATTLE | La Plata County, CO | Gas Property | Sep 2025 |
| 4347 | SIMONSEN | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4348 | SIMONSEN-SCHAEFER 7 | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 4349 | SIMPSON | Weld County, CO | Oil & Gas Property | May 2025 |
| 4350 | SIMPSON | Adams County, CO | Oil & Gas Property | Jun 2025 |
| 4351 | SIMPSON | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4352 | SIMPSON 2 | Moffat County, CO | Gas Property | Jun 2025 |
| 4353 | SIMPSON MD 2 | Boulder County, CO | Oil & Gas Property | Apr 2025 |
| 4354 | SINDT 1 | Logan County, CO | Oil Property | Oct 2025 |
| 4355 | SINGER E 34 | Weld County, CO | Oil & Gas Property | Aug 2016 |
| 4356 | SINGLE EAGLE | San Miguel County, CO | Oil & Gas Property | Dec 2024 |
| 4357 | SINJIN | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4358 | SIRIOS | Weld County, CO | Oil & Gas Property | May 2013 |
| 4359 | SIRIOS BROTHERS | Weld County, CO | Oil & Gas Property | Sep 2015 |
| 4360 | SITTON | La Plata County, CO | Gas Property | Sep 2025 |
| 4361 | SITTON FEDERAL | La Plata County, CO | Gas Property | Sep 2025 |
| 4362 | SITZMAN | Weld County, CO | Oil & Gas Property | May 2017 |
| 4363 | SITZMAN | Weld County, CO | Oil & Gas Property | Apr 2013 |
| 4364 | SITZMAN | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 4365 | SITZMAN | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 4366 | SKAER | Larimer County, CO | Oil & Gas Property | Jun 2017 |
| 4367 | SKARPHOL | Cheyenne County, CO | Oil & Gas Property | Sep 2025 |
| 4368 | SKI 3 | Rio Blanco County, CO | Oil Property | Apr 2009 |
| 4369 | SKIM | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4370 | SKIM STATE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4371 | SKINNER RIDGE | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4372 | SKR 59 | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4373 | SKR 698 | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 4374 | SKURICH | Weld County, CO | Oil & Gas Property | Mar 2019 |
| 4375 | SKY RANCH 4-65 | Arapahoe County, CO | Oil & Gas Property | Sep 2025 |
| 4376 | SKYWAY | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 4377 | SLANOVICH | Fremont County, CO | Oil Property | Oct 2022 |
| 4378 | SLATER | Weld County, CO | Oil & Gas Property | Jul 2018 |
| 4379 | SLEDGE C 9 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 4380 | SLEEPING UTE | Montezuma County, CO | Oil & Gas Property | Sep 2025 |
| 4381 | SLICK ROCK | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4382 | SLUGGER | La Plata County, CO | Gas Property | Oct 2025 |
| 4383 | SLW GREEN STATE BB 18 | Weld County, CO | Oil & Gas Property | Feb 2021 |
| 4384 | SLW RANCH | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4385 | SLW STATE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4386 | SMALL | Washington County, CO | Gas Property | Oct 2025 |
| 4387 | SMALL EYED | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4388 | SMART | Logan County, CO | Oil & Gas Property | Feb 2009 |
| 4389 | SMITH | La Plata County, CO | Gas Property | Sep 2025 |
| 4390 | SMITH | Yuma County, CO | Oil & Gas Property | Sep 2025 |
| 4391 | SMITH | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 4392 | SMITH 2 | Yuma County, CO | Gas Property | Sep 2025 |
| 4393 | SMITH A 1 | La Plata County, CO | Gas Property | Sep 2025 |
| 4394 | SMITH FEDERAL | La Plata County, CO | Gas Property | Sep 2025 |
| 4395 | SMITH STATE LD12-7 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 4396 | SMITH-WOLTER | La Plata County, CO | Gas Property | Sep 2025 |
| 4397 | SMITS | Weld County, CO | Oil & Gas Property | Apr 2020 |
| 4398 | SNIFF | Bent County, CO | Oil & Gas Property | Aug 2025 |
| 4399 | SNOOK | La Plata County, CO | Gas Property | Sep 2025 |
| 4400 | SNOOKS A | La Plata County, CO | Gas Property | Sep 2025 |