| INFORMA MEDIA, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 18, 1978 | Withdrawn |
| ADVANSTAR COMMUNICATIONS INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 15, 1987 | Active |
| COUNCIL ON EDUCATION IN MANAGEMENT, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 14, 1996 | Withdrawn |
| INFORMA BUSINESS MEDIA, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Apr 13, 2000 | Withdrawn |
| INFORMA MARKETS HOLDINGS, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Mar 18, 2003 | Withdrawn |
| CONTINUING MEDICAL EDUCATION, INCORPORATEDLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 30, 2003 | Withdrawn |
| INFORMA TECH HOLDINGS LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Dec 7, 2007 | Active |
| INFORMA BUSINESS INTELLIGENCE, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Sep 20, 2012 | Withdrawn |
| IBC USA (CONFERENCES) INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Mar 6, 2014 | Withdrawn |
| INFORMA TELECOMS & MEDIA LIMITEDLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 5, 2014 | Withdrawn |
| TANIUM INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 22, 2015 | Active |
| INFORMA MARKETS INVESTMENTS, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 21, 2015 | Withdrawn |
| KNECT365 US, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 1, 2016 | Withdrawn |
| INFORMA EXHIBITIONS U.S. CONSTRUCTION & REAL ESTATE, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Oct 23, 2017 | Active |
| INFORMA SUPPORT SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 18, 2018 | Active |
| INFORMA USA, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 19, 2020 | Active |
| INFORMA MARKETS MANUFACTURING LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Dec 7, 2020 | Active |
| INFORMA MARKETS MEDICA LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Nov 23, 2021 | Active |
| Yachting Promotions, Inc.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 1, 2023 | Active |
| Informa Connect USA LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Nov 5, 2024 | Active |
| Informa Media LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Nov 8, 2024 | Active |
| Informa Business Media LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Nov 8, 2024 | Active |
| Informa Markets Holdings LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Nov 8, 2024 | Active |
| Informa Business Intelligence LLCLocation not reported, CT · Withdrawn | Location not reported, CT | LLC | Nov 8, 2024 | Withdrawn |
| Informa Markets Investments LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Nov 8, 2024 | Active |
| WARC LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Jun 2, 2026 | Active |
| Money2020 LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Jun 7, 2026 | Active |