| LDS TEST AND MEASUREMENT INC.Location not reported, CT · Merged | Location not reported, CT | Corporation | Jan 22, 1973 | Merged |
| FMC CORPORATIONLocation not reported, CT · Active | Location not reported, CT | Corporation | Mar 30, 1950 | Active |
| SPX COOLING TECHNOLOGIES, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 22, 1981 | Withdrawn |
| THE MARITIME AQUARIUM AT NORWALK, INC.Norwalk, CT · Active | Norwalk, CT | Corporation | Apr 5, 1982 | Active |
| INNOVATIVE MEDICAL PRODUCTS, INC.Plainville, CT · Active | Plainville, CT | Corporation | May 11, 1984 | Active |
| M & M Reilly, LLCCoventry, CT · Dissolved | Coventry, CT | LLC | Nov 20, 1997 | Dissolved |
| MIDWEST COLLECTION SERVICE, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Mar 25, 2002 | Revoked |
| THE MARLEY-WYLAIN COMPANYLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 18, 2003 | Withdrawn |
| OAKWELLS LLCLocation not reported, CT · Cancelled | Location not reported, CT | LLC | Apr 26, 2007 | Cancelled |
| R & R BOUNCE HOUSES, LLCWallingford, CT · Dissolved | Wallingford, CT | LLC | May 30, 2008 | Dissolved |
| PMC INDUSTRIES, INC.Plainville, CT · Active | Plainville, CT | Corporation | Jan 19, 2010 | Active |
| REILLY RESTORATION & PAINTING, LLCTrumbull, CT · Dissolved | Trumbull, CT | LLC | Apr 29, 2010 | Dissolved |
| "R" PLUMBING COMPANY, LLCPortland, CT · Active | Portland, CT | LLC | Nov 15, 2011 | Active |
| FRED C. CHURCH, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Dec 16, 2011 | Active |
| INTEGRATED HOME MEDIA, LLCBrookfield, CT · Forfeited | Brookfield, CT | LLC | Mar 11, 2015 | Forfeited |
| ROWE WEALTH MANAGEMENT, LLCLocation not reported, CT · Withdrawn | Location not reported, CT | LLC | Feb 18, 2016 | Withdrawn |
| MRTECH LLCNorwalk, CT · Dissolved | Norwalk, CT | LLC | Mar 1, 2016 | Dissolved |
| FINANCIAL GROUP INC THELocation not reported, CT · Forfeited | Location not reported, CT | Corporation | Mar 26, 2018 | Forfeited |
| QUANTUM CAPITAL INVESTMENTS LLCNew Fairfield, CT · Forfeited | New Fairfield, CT | LLC | Jun 30, 2018 | Forfeited |
| 163 MARLBOROUGH STREET LLCPortland, CT · Active | Portland, CT | LLC | Dec 7, 2018 | Active |
| MIKE REILLY HOLDINGS LLCNew Fairfield, CT · Forfeited | New Fairfield, CT | LLC | May 9, 2019 | Forfeited |
| INTROLEND FIRST CLOUD, LLCLocation not reported, CT · Withdrawn | Location not reported, CT | LLC | Aug 21, 2020 | Withdrawn |
| THE MARLEY-WYLAIN COMPANY, LLCLocation not reported, CT · Withdrawn | Location not reported, CT | LLC | Jan 15, 2021 | Withdrawn |
| 143 Marlborough St LLCPortland, CT · Active | Portland, CT | LLC | Mar 1, 2022 | Active |
| REILLY RESTORATION, LLCTrumbull, CT · Forfeited | Trumbull, CT | LLC | Apr 28, 2022 | Forfeited |
| A GIFT OF LIFE, THE HEART AND LUNG TRANSPLANT SUPPORT GROUP, Inc.Shelton, CT · Active | Shelton, CT | Corporation | Mar 1, 2023 | Active |
| Mr. Value LLCPortland, CT · Dissolved | Portland, CT | LLC | Apr 6, 2023 | Dissolved |
| MRC GROUP LLCNorwalk, CT · Active | Norwalk, CT | LLC | Aug 22, 2023 | Active |
| MRC ENGINEERING PLLCNorwalk, CT · Active | Norwalk, CT | LLC | Aug 22, 2023 | Active |
| R Construction Company LLCPortland, CT · Dissolved | Portland, CT | LLC | Feb 16, 2024 | Dissolved |
| HodlMaven Limited Liability CompanyKent, CT · Active | Kent, CT | LLC | Aug 22, 2024 | Active |
| Atlas Cleaning Group LLCPortland, CT · Active | Portland, CT | LLC | Mar 6, 2026 | Active |
| Bradshaw Towing Services LLCOakville, CT · Active | Oakville, CT | LLC | Apr 22, 2026 | Active |
| PRO ADVANTAGE HOME IMPROVEMENT LLCPortland, CT · Active | Portland, CT | LLC | Oct 8, 2026 | Active |