| EL PASO NATURAL GAS COMPANY, L.L.C.Location not reported, CO · Good Standing | Location not reported, CO | LLC | Mar 13, 1950 | Good Standing |
| HUNT OIL COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Mar 2, 1953 | Good Standing |
| LUBY CHEVROLET CO., Colorado Authority Relinquished November 21, 2008Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Aug 31, 1956 | Withdrawn |
| IBIS COMPANY, LIMITEDLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Nov 30, 1959 | Good Standing |
| HALLIBURTON ENERGY SERVICES, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Apr 28, 1945 | Good Standing |
| MAXXAM INC., Colorado Authority Terminated January 5, 2004Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Oct 2, 1958 | Withdrawn |
| BHP Minerals International LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Jan 28, 1957 | Good Standing |
| Tennessee Gas Pipeline Company, L.L.C.Location not reported, CO · Good Standing | Location not reported, CO | LLC | May 26, 1976 | Good Standing |
| S. P. RICHARDS COMPANYDenver, CO · Good Standing | Denver, CO | Corporation | Sep 26, 1977 | Good Standing |
| M C O PROPERTIES INC., Colorado Authority Relinquished April 30, 2019Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Nov 17, 1977 | Withdrawn |
| Sysco Denver, Inc.Denver, CO · Merged | Denver, CO | Corporation | Dec 31, 1943 | Merged |
| NATIONAL WESTERN LIFE INSURANCE COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 16, 1956 | Good Standing |
| ZIMMERMAN METALS, LLCDenver, CO · Good Standing | Denver, CO | LLC | Jul 31, 1959 | Good Standing |
| ESCO CONSTRUCTION CO.Evergreen, CO · Good Standing | Evergreen, CO | Corporation | Jul 24, 1961 | Good Standing |
| Ignite Auto-Trol Solutions, LLCLocation not reported, CO · Merged | Location not reported, CO | LLC | Jan 15, 1962 | Merged |
| Northwestern Builders, LLCDenver, CO · Good Standing | Denver, CO | LLC | Mar 29, 1962 | Good Standing |
| M.C. SOUTHWEST, INC., Dissolved February 25, 2026Location not reported, CO · Voluntarily Dissolved | Location not reported, CO | Corporation | Apr 21, 1965 | Voluntarily Dissolved |
| COLORADO KENWORTH, LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | May 19, 1965 | Good Standing |
| ALLIED HOUSING, INC.Denver, CO · Good Standing | Denver, CO | Nonprofit | May 29, 1968 | Good Standing |
| KATINKA MINING CORPORATIONLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Aug 25, 1971 | Good Standing |
| C F M Company of Colorado, LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Jan 8, 1973 | Good Standing |
| THE AMERICAN COLLEGE OF GREECELocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Mar 24, 1961 | Good Standing |
| ROCKY MOUNTAIN STRUCTURES, INC.Denver, CO · Good Standing | Denver, CO | Corporation | Sep 1, 1977 | Good Standing |
| BENEFIT CONCEPTS OF COLORADO, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Mar 24, 1978 | Good Standing |
| ANDREW WOMMACK MINISTRIES, INC.Woodland Park, CO · Good Standing | Woodland Park, CO | Nonprofit | Jul 28, 1978 | Good Standing |
| ENGlobal Land, Inc.Broomfield, CO · Merged | Broomfield, CO | Corporation | Feb 22, 1979 | Merged |
| McEwen Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 24, 1979 | Good Standing |
| Capstar Drilling, Inc.Location not reported, CO · Delinquent | Location not reported, CO | Corporation | Jul 10, 1980 | Delinquent |
| ESC Engineering, LLC, Dissolved December 27, 2024Fort Collins, CO · Voluntarily Dissolved | Fort Collins, CO | LLC | Aug 5, 1980 | Voluntarily Dissolved |
| LAMAR ADVERTISING OF COLORADO SPRINGS, L.L.C.Location not reported, CO · Good Standing | Location not reported, CO | LLC | Sep 29, 1980 | Good Standing |
| NICHOLS-GIVEN ASSOCIATES, INC.Englewood, CO · Merged | Englewood, CO | Corporation | Feb 17, 1981 | Merged |
| BAR-S FOODS CO.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Aug 18, 1981 | Good Standing |
| Wyoming Interstate Company, L.L.C.Location not reported, CO · Good Standing | Location not reported, CO | LLC | Nov 4, 1981 | Good Standing |
| Graebel/Denver Movers, LLC, Delinquent May 1, 2018Aurora, CO · Delinquent | Aurora, CO | LLC | Apr 22, 1982 | Delinquent |
| WILLIAM HENRY DOHENY, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 2, 1982 | Good Standing |
| ALLIED HOUSING SOUTH, INC.Denver, CO · Good Standing | Denver, CO | Nonprofit | Dec 29, 1982 | Good Standing |
| Superior Roofing, LLCAurora, CO · Converted | Aurora, CO | LLC | Aug 11, 1983 | Converted |
| HERITAGE CHRISTIAN CENTERLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Jan 6, 1984 | Good Standing |
| LEXAM EXPLORATIONS (U.S.A.) INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jan 9, 1984 | Good Standing |
| TONKIN SPRINGS GOLD MINING COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Mar 8, 1985 | Good Standing |
| CHAMBORD II HOMEOWNERS ASSOCIATION, INC.Location not reported, CO · Good Standing | Location not reported, CO | Nonprofit | May 9, 1985 | Good Standing |
| RIGGI OIL COMPANY, LLCCommerce City, CO · Good Standing | Commerce City, CO | LLC | Jun 24, 1985 | Good Standing |
| SPLIT-RAIL FENCE COMPANY, LLCLittleton, CO · Good Standing | Littleton, CO | LLC | Sep 19, 1985 | Good Standing |
| BARNES & NOBLE COLLEGE BOOKSELLERS, INC., Colorado Authority Relinquished October 30, 2009Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Oct 8, 1985 | Withdrawn |
| MURPHY & HOFFMAN JOINT VENTURES, L.P.Location not reported, CO · Good Standing | Location not reported, CO | Partnership | Jan 14, 1986 | Good Standing |
| THE SPORTS CAR CLUB OF AMERICA FOUNDATION, INC.Location not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Sep 23, 1986 | Good Standing |
| MHC FINANCIAL SERVICES, LLC.Location not reported, CO · Good Standing | Location not reported, CO | LLC | Nov 24, 1986 | Good Standing |
| BRIDGE EDUCATION GROUP, INC.Denver, CO · Good Standing | Denver, CO | Corporation | Nov 26, 1986 | Good Standing |
| JEANNE LAND FOUNDATION IN MEMORY OF DEAN GILLESPIEDenver, CO · Good Standing | Denver, CO | Nonprofit | Dec 16, 1986 | Good Standing |
| NATURESMART, INC.Thornton *, CO · Merged | Thornton *, CO | Corporation | Jan 21, 1987 | Merged |