| COLCHESTER INN CAFE, INC.Location not reported, CT · Forfeited | Location not reported, CT | Corporation | May 9, 1969 | Forfeited |
| FLYING 20 CLUB, INCORPORATEDNewtown, CT · Active | Newtown, CT | Corporation | Jun 28, 1940 | Active |
| YE CONNECTICUT GUN GUILD, INCORPORATEDLebanon, CT · Active | Lebanon, CT | Corporation | Feb 13, 1946 | Active |
| BOBCO, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Mar 27, 1984 | Dissolved |
| CLARK GAUCHES, LLCBloomfield, CT · Forfeited | Bloomfield, CT | LLC | Mar 6, 1998 | Forfeited |
| SHAMROCK TRADITIONAL IRISH MUSIC SOCIETY, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Mar 10, 1999 | Active |
| ROB-TEC.COM, LLCFairfield, CT · Active | Fairfield, CT | LLC | Feb 2, 2004 | Active |
| PROJECT SPECIALTIES INCLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | May 25, 2005 | Withdrawn |
| FLYING 20 CLUB II, INC.Newtown, CT · Merged | Newtown, CT | Corporation | May 5, 2006 | Merged |
| SAYBROOK CONTRACTORS, LLCOld Saybrook, CT · Dissolved | Old Saybrook, CT | LLC | Aug 17, 2006 | Dissolved |
| CLARK ELECTRICAL SERVICES LLCCheshire, CT · Active | Cheshire, CT | LLC | Dec 4, 2006 | Active |
| BROOK INVESTMENTS LLCLocation not reported, CT · Revoked | Location not reported, CT | LLC | Apr 22, 2008 | Revoked |
| LUCIDPOINTE, LLCFairfield, CT · Active | Fairfield, CT | LLC | Mar 11, 2009 | Active |
| CLARK & DORIN, LLCLitchfield, CT · Dissolved | Litchfield, CT | LLC | Feb 23, 2009 | Dissolved |
| R&N HOLDINGS, LLCBloomfield, CT · Active | Bloomfield, CT | LLC | Mar 10, 2009 | Active |
| COMPLETE FITNESS EQUIPMENT, LLCHamden, CT · Dissolved | Hamden, CT | LLC | Mar 18, 2010 | Dissolved |
| GEORGETOWN LIONS CLUB, INC.Georgetown, CT · Active | Georgetown, CT | Corporation | Oct 12, 2011 | Active |
| WINGSPAN AVIATION, LLCNewtown, CT · Dissolved | Newtown, CT | LLC | May 11, 2012 | Dissolved |
| AEGIS TELECOM, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 5, 2012 | Withdrawn |
| NEWTOWN BRIDGE CLUB INC.Newtown, CT · Active | Newtown, CT | Corporation | Dec 30, 2013 | Active |
| CLARK RESTORATION & REMODELING LLCEaston, CT · Active | Easton, CT | LLC | May 2, 2016 | Active |
| DELEON ENTERPRISES LLCRocky Hill, CT · Forfeited | Rocky Hill, CT | LLC | Apr 27, 2017 | Forfeited |
| CLARK CONSULTING GROUP, LLCGlastonbury, CT · Forfeited | Glastonbury, CT | LLC | Apr 10, 2019 | Forfeited |
| MUNICIPAL SOLVENCY RESEARCH, LLCLocation not reported, CT · Withdrawn | Location not reported, CT | LLC | May 31, 2019 | Withdrawn |
| Clark Chandler Mills LLCFairfield, CT · Active | Fairfield, CT | LLC | Jan 4, 2022 | Active |
| EcoData Technology LLCPlantsville, CT · Active | Plantsville, CT | LLC | Mar 9, 2022 | Active |
| Robert J. Clark LLCOxford, CT · Active | Oxford, CT | LLC | Nov 8, 2024 | Active |
| FREELANCE BIO LLCPlantsville, CT · Active | Plantsville, CT | LLC | Aug 29, 2025 | Active |
| Clarkivist LLCBethel, CT · Active | Bethel, CT | LLC | Jun 17, 2026 | Active |