| INFORMA EXHIBITIONS, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 6, 2015 | Active |
| MCI OPCO, LLCBoca Raton, FL · Active | Boca Raton, FL | LLC | Jun 28, 2016 | Active |
| METABOLIC MEDICAL INSTITUTE, INC.Boca Raton, FL · Active | Boca Raton, FL | Corporation | Feb 17, 2014 | Active |
| TARSUS CARDIO INC.Boca Raton, FL · Active | Boca Raton, FL | Corporation | Feb 17, 2014 | Active |
| FORT LAUDERDALE CONVENTION SERVICES, INC.Fort Lauderdale, FL · Active | Fort Lauderdale, FL | Corporation | Apr 12, 2006 | Active |
| BOAT INTERNATIONAL MEDIA, INC.Fort Lauderdale, FL · Active | Fort Lauderdale, FL | Corporation | Dec 8, 2004 | Active |
| INFORMA MARKETS ART, LLCFort Lauderdale, FL · Active | Fort Lauderdale, FL | LLC | Jun 5, 2019 | Active |
| INFORMA GLOBAL SHARED SERVICES LLCSarasota, FL · Active | Sarasota, FL | LLC | Feb 1, 2023 | Active |
| INFORMA LIFE SCIENCES EXHIBITIONS, INC.Sarasosta, FL · Active | Sarasosta, FL | Corporation | Apr 25, 2016 | Active |
| INFORMA SUPPORT SERVICES, INC.Sarasota, FL · Active | Sarasota, FL | Corporation | Jan 24, 2000 | Active |
| INFORMA MARKETS MEDICA LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Nov 22, 2021 | Active |
| INFORMA PRINCETON LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Mar 23, 2021 | Active |
| INFORMA TECH HOLDINGS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Dec 7, 2007 | Active |
| INFORMA MARKETS HOLDINGS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 24, 2025 | Active |
| INFORMA MARKETS INVESTMENTS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 24, 2025 | Active |
| INFORMA BUSINESS INTELLIGENCE LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Feb 10, 2025 | Active |
| INFORMA CONNECT USA LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Feb 3, 2025 | Active |
| YACHTING PROMOTIONS, INC.Fort Lauderdale, FL · Active | Fort Lauderdale, FL | Corporation | Mar 15, 1976 | Active |
| INFORMA BUSINESS MEDIA, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Dec 27, 2000 | Inactive |
| INFORMA MEDIA, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jun 25, 2001 | Inactive |
| INFORMA MARKETS HOLDINGS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Mar 17, 2003 | Inactive |
| MEDICAL CONFERENCES INTERNATIONAL, INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Jan 12, 2007 | Active |
| INFORMA BUSINESS INTELLIGENCE, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jul 2, 2009 | Inactive |
| INFORMA MARKETS INVESTMENTS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Mar 2, 2016 | Inactive |
| INFORMA TELECOMS & MEDIA LIMITED CORP.Sarasota, FL · Inactive | Sarasota, FL | Corporation | Jun 22, 2016 | Inactive |
| DUKE TECHNOLOGY, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jan 29, 2018 | Inactive |
| FARM PROGRESS LIMITED, INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Jan 26, 2018 | Active |
| INFORMA EXHIBITIONS U.S. CONTRUCTION & REAL ESTATE, INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Feb 1, 2023 | Active |
| INFORMA BUSINESS MEDIA LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 24, 2025 | Active |
| INFORMA MEDIA LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Oct 30, 2025 | Active |
| TARSUS CONNECT, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | May 4, 2026 | Active |
| ADVANSTAR COMMUNICATIONS INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Sep 18, 1987 | Active |