| HARTFORD STEAM BOILER INSPECTION AND INSURANCE COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Dec 29, 1913 | Good Standing |
| GENFI MINISTRIESLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Jul 19, 1956 | Good Standing |
| PHARMACISTS INSURANCE COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Mar 13, 1959 | Good Standing |
| FEDERATED MUTUAL INSURANCE COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Jun 16, 1970 | Good Standing |
| AMERICAN MODERN HOME INSURANCE COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Nov 6, 1970 | Good Standing |
| MASSMAN CONSTRUCTION CO.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 23, 1972 | Good Standing |
| THE HARTZ MOUNTAIN CORPORATIONLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 19, 1973 | Good Standing |
| FEDERATED SERVICE INSURANCE COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 25, 1975 | Good Standing |
| JENSEN DRILLING COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Oct 1, 1976 | Good Standing |
| Munich Reinsurance America, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | May 11, 1978 | Good Standing |
| WILBUR-ELLIS COMPANY, LLCDenver, CO · Good Standing | Denver, CO | LLC | May 24, 1978 | Good Standing |
| BADGER METER, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Oct 2, 1978 | Good Standing |
| SCHNABEL FOUNDATION COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Apr 23, 1979 | Good Standing |
| UNIVERSITY CORPORATION FOR ATMOSPHERIC RESEARCHBoulder, CO · Good Standing | Boulder, CO | Nonprofit | Apr 12, 1946 | Good Standing |
| THE EDMUND T. AND ELEANOR QUICK FOUNDATION, INC.Centennial, CO · Good Standing | Centennial, CO | Nonprofit | Aug 23, 1963 | Good Standing |
| ACADEMIC SPECIALTIES, INC., Dissolved March 7, 2024Englewood, CO · Voluntarily Dissolved | Englewood, CO | Corporation | Jan 21, 1966 | Voluntarily Dissolved |
| WESTERN TRAUMA ASSOCIATIONLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Jan 25, 1971 | Good Standing |
| ROSSI VUCINOVICH PCLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Mar 28, 1972 | Good Standing |
| SCHMUESER & ASSOCIATES, INC.Grand Junction, CO · Good Standing | Grand Junction, CO | Corporation | Jun 22, 1972 | Good Standing |
| REDEKER EXCAVATING INCORPORATEDCastle Rock, CO · Good Standing | Castle Rock, CO | Corporation | Jul 5, 1978 | Good Standing |
| NEWTRON, LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Jul 10, 1980 | Good Standing |
| HOSPITALITY BUILDERS, INC., Colorado Authority Relinquished November 15, 2021Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Mar 2, 1981 | Withdrawn |
| UNIVERSAL LENDING CORPORATIONGreenwood Village, CO · Good Standing | Greenwood Village, CO | Corporation | Apr 3, 1981 | Good Standing |
| TRAC-WORK, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Aug 31, 1981 | Good Standing |
| DYWIDAG SYSTEMS INTERNATIONAL USA, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Oct 1, 1981 | Good Standing |
| CONCRETE CURB LLCLittleton, CO · Good Standing | Littleton, CO | LLC | Jun 9, 1982 | Good Standing |
| Arthur S. Waldbaum , M.D.,Inc., Dissolved November 19, 2025Englewood, CO · Voluntarily Dissolved | Englewood, CO | Corporation | Jul 1, 1982 | Voluntarily Dissolved |
| SKYLARK ENTERPRISES INC.Edwards, CO · Good Standing | Edwards, CO | Corporation | Sep 7, 1982 | Good Standing |
| MAGNUM TOOL COMPANY, INC., Delinquent February 1, 2016Colorado Springs, CO · Delinquent | Colorado Springs, CO | Corporation | Sep 28, 1982 | Delinquent |
| ISDNLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Jan 28, 1983 | Good Standing |
| COLORADO ROCKY MOUNTAIN SOLID WASTE ASSOCIATION OF NORTH AMERICADenver, CO · Good Standing | Denver, CO | Nonprofit | Jun 8, 1983 | Good Standing |
| MURPHY COMPANY MECHANICAL CONTRACTORS AND ENGINEERSThornton *, CO · Good Standing | Thornton *, CO | Corporation | Jul 11, 1983 | Good Standing |
| OKLAND CONSTRUCTION COMPANY, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 11, 1983 | Good Standing |
| INSTRUCTIONAL TELECOMMUNICATIONS FOUNDATION, INC.Englewood, CO · Good Standing | Englewood, CO | Nonprofit | Jul 18, 1983 | Good Standing |
| SOS Nursing Services IncLone Tree, CO · Good Standing | Lone Tree, CO | Corporation | Mar 6, 1984 | Good Standing |
| LIG INSURANCE AGENCY, INC., Colorado Authority Relinquished November 11, 2015Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Nov 19, 1984 | Withdrawn |
| Prairie Petroleum, Inc.Denver, CO · Good Standing | Denver, CO | Corporation | Jun 24, 1985 | Good Standing |
| Columbine Hills Construction LLCSilverthorne, CO · Good Standing | Silverthorne, CO | LLC | Dec 9, 1985 | Good Standing |
| ATLAS MINERALS & CHEMICALS, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Dec 12, 1985 | Good Standing |
| UCAR ExchangeBoulder, CO · Good Standing | Boulder, CO | Nonprofit | Apr 22, 1986 | Good Standing |
| FUTURE ELECTRONICS CORP.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | May 5, 1986 | Good Standing |
| EXPEDITORS INTERNATIONAL OF WASHINGTON, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 2, 1986 | Good Standing |
| XETA TECHNOLOGIES, INC.Location not reported, CO · Noncompliant | Location not reported, CO | Corporation | Jun 16, 1986 | Noncompliant |
| Coleman Oil Inc.Denver, CO · Good Standing | Denver, CO | Corporation | Jul 16, 1986 | Good Standing |
| COLEMAN OIL LIMITED PARTNERSHIP 1986-1, Dissolved May 29, 2024Denver, CO · Voluntarily Dissolved | Denver, CO | Partnership | Oct 7, 1986 | Voluntarily Dissolved |
| THE PARSEC GROUP, LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Oct 8, 1986 | Good Standing |
| GOOD TIMES DRIVE THRU INC.Golden, CO · Good Standing | Golden, CO | Corporation | Dec 23, 1986 | Good Standing |
| Lumin8 Transportation Technologies, LLCArvada, CO · Good Standing | Arvada, CO | LLC | Dec 31, 1986 | Good Standing |
| NATIONAL EMERGENCY MEDICINE ASSOCIATION, INC., Delinquent January 1, 2020Location not reported, CO · Delinquent | Location not reported, CO | Nonprofit | Mar 23, 1987 | Delinquent |
| LIVESTOCK MARKETING INSURANCE AGENCY, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Mar 30, 1987 | Good Standing |