| ENFORTH CORPORATIONNew York, NY · Active | New York, NY | Corporation | May 24, 1982 | Active |
| INSURIFY INSURANCE AGENCY, INC.Location not reported, AK · Good Standing | Location not reported, AK | Corporation | Aug 20, 2015 | Good Standing |
| PHILIPS NORTH AMERICA LLCLocation not reported, AK · Good Standing | Location not reported, AK | LLC | May 10, 2017 | Good Standing |
| GE VERNOVA OPERATIONS LLCLocation not reported, AK · Good Standing | Location not reported, AK | LLC | Aug 22, 2018 | Good Standing |
| Cultural Care, Inc.Location not reported, AK · Good Standing | Location not reported, AK | Corporation | Mar 10, 2021 | Good Standing |
| EF Institute for Cultural Exchange, Inc.Location not reported, AK · Good Standing | Location not reported, AK | Corporation | Oct 8, 2021 | Good Standing |
| GENZYME CORPORATIONLocation not reported, AK · Good Standing | Location not reported, AK | Corporation | May 24, 2023 | Good Standing |
| GE VERNOVA INTERNATIONAL LLCLocation not reported, AK · Good Standing | Location not reported, AK | LLC | Dec 13, 2023 | Good Standing |
| Visicu, Inc.Location not reported, AK · Good Standing | Location not reported, AK | Corporation | Mar 1, 2006 | Good Standing |
| Philips North America LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Oct 9, 1995 | Good Standing |
| GE Vernova International LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Jan 22, 1996 | Good Standing |
| EFEKTA SCHOOLS, INC., Colorado Authority Terminated June 1, 2001Location not reported, CO · Revoked | Location not reported, CO | Corporation | Dec 6, 1996 | Revoked |
| BOSTON CONCESSIONS GROUP, INC., Colorado Authority Terminated November 1, 2002Location not reported, CO · Revoked | Location not reported, CO | Corporation | May 29, 1997 | Revoked |
| BIOPURE COPORATION, Colorado Authority Terminated July 1, 2000Location not reported, CO · Revoked | Location not reported, CO | Corporation | Jan 1, 1998 | Revoked |
| ASPEN TECHNOLOGY, INC., Colorado Authority Terminated April 30, 2005Location not reported, CO · Revoked | Location not reported, CO | Corporation | Nov 30, 2000 | Revoked |
| EFEKTA SCHOOLS, INC., Colorado Authority Terminated January 1, 2003Location not reported, CO · Revoked | Location not reported, CO | Corporation | Jul 31, 2001 | Revoked |
| FARM AID, INC.Location not reported, CO · Delinquent | Location not reported, CO | Corporation | Nov 18, 2002 | Delinquent |
| EFEKTA SCHOOLS, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Feb 19, 2003 | Good Standing |
| Visicu, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Feb 22, 2006 | Good Standing |
| LOGISTIC FREIGHT USA, Dissolved April 28, 2015Location not reported, CO · Voluntarily Dissolved | Location not reported, CO | Partnership | Sep 5, 2006 | Voluntarily Dissolved |
| EF Educational ToursLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 3, 2007 | Good Standing |
| Cultural Care, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Feb 25, 2008 | Good Standing |
| EF Explore America, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 30, 2009 | Good Standing |
| Knitolution Designs, LLC, Dissolved December 4, 2012Location not reported, CO · Voluntarily Dissolved | Location not reported, CO | LLC | Nov 23, 2009 | Voluntarily Dissolved |
| LATERAL INTERNATIONAL LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Oct 19, 2010 | Good Standing |
| EF INTERNATIONAL LANGUAGE CENTRES, Colorado Authority Relinquished March 7, 2022Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Feb 14, 2011 | Withdrawn |
| College Year in Athens, Inc., Colorado Authority Relinquished January 7, 2013Location not reported, CO · Withdrawn | Location not reported, CO | Nonprofit | Oct 21, 2011 | Withdrawn |
| Capsule Technologies Inc., Colorado Authority Relinquished February 28, 2023Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Feb 17, 2012 | Withdrawn |
| s::can Measuring Systems LLC, Delinquent September 1, 2017Location not reported, CO · Delinquent | Location not reported, CO | LLC | Apr 18, 2014 | Delinquent |
| EF LANGUAGE SCHOOLS INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 15, 2015 | Good Standing |
| INSURIFY INSURANCE AGENCY, INC., Colorado Authority Relinquished March 29, 2023Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Aug 5, 2015 | Withdrawn |
| EF High School Exchange YearLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Oct 27, 2015 | Good Standing |
| EF World Journeys, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Dec 8, 2015 | Good Standing |
| Xhale Assurance, Inc., Colorado Authority Relinquished November 2, 2020Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Feb 14, 2017 | Withdrawn |
| Philips Holding USA Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 23, 2017 | Good Standing |
| CapsuleTech, Inc., Colorado Authority Relinquished June 12, 2026Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Sep 22, 2017 | Withdrawn |
| Argyle Sports, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Oct 13, 2017 | Good Standing |
| Editas Medicine, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jan 10, 2018 | Good Standing |
| OBMedical Company, Colorado Authority Relinquished April 9, 2021Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Jan 11, 2018 | Withdrawn |
| HULT INTERNATIONAL BUSINESS SCHOOL, INC.Location not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Jul 26, 2018 | Good Standing |
| GE Vernova Electrification Software LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Oct 23, 2018 | Good Standing |
| EF Learning Centers, Inc., Colorado Authority Relinquished April 15, 2021Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Feb 25, 2019 | Withdrawn |
| Geneva Healthcare, LLC, Colorado Authority Relinquished December 4, 2024Location not reported, CO · Withdrawn | Location not reported, CO | LLC | May 15, 2019 | Withdrawn |
| English One Teaching Services, Inc., Colorado Authority Relinquished August 13, 2023Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Aug 16, 2019 | Withdrawn |
| EF International Academy, Inc., Colorado Authority Relinquished November 18, 2024Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Nov 19, 2019 | Withdrawn |
| Clearbit, Colorado Authority Relinquished September 24, 2026Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Feb 17, 2020 | Withdrawn |
| PairUp, Inc.Location not reported, CO · Converted | Location not reported, CO | Corporation | Oct 21, 2020 | Converted |
| Three Oaks Manufacturing LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Nov 16, 2020 | Good Standing |
| AChang RD LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Mar 4, 2021 | Good Standing |
| Argyle Coaching, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 22, 2021 | Good Standing |