| PROSPECTOR PARTNERS, L.L.C.Guilford, CT · Active | Guilford, CT | LLC | Apr 14, 1997 | Active |
| FINANCIAL INVESTORS GROUP, LLCGuilford, CT · Dissolved | Guilford, CT | LLC | Jan 28, 1998 | Dissolved |
| PROSPECTOR HOLDINGS, L.L.C.Guilford, CT · Withdrawn | Guilford, CT | LLC | Feb 4, 1998 | Withdrawn |
| OLMSTED CAPITAL MANAGEMENT, L.L.C.Guilford, CT · Cancelled | Guilford, CT | LLC | Jul 29, 1998 | Cancelled |
| PROSPECTOR CAPITAL MANAGEMENT, L.L.C.Guilford, CT · Withdrawn | Guilford, CT | LLC | Oct 5, 1998 | Withdrawn |
| PROSPECTOR PARTNERS CT FUND INVESTMENT MANAGEMENT, L.L.C.Location not reported, CT · Cancelled | Location not reported, CT | LLC | May 5, 2000 | Cancelled |
| PROSPECTOR PARTNERS CONNECTICUT FUND, LIMITED PARTNERSHIPGuilford, CT · Cancelled | Guilford, CT | Partnership | May 8, 2000 | Cancelled |
| PROSPECTOR CAPITAL MANAGEMENT II, L.L.C.Guilford, CT · Cancelled | Guilford, CT | LLC | Aug 7, 2000 | Cancelled |
| PROSPECTOR CONNECTICUT FUND G.P. II, L.L.C.Guilford, CT · Cancelled | Guilford, CT | LLC | Aug 7, 2000 | Cancelled |
| 370 CHURCH STREET, LLCGuilford, CT · Active | Guilford, CT | LLC | Aug 28, 2001 | Active |
| ONEBEACON ASSET MANAGEMENT, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 15, 2002 | Withdrawn |
| PROSPECTOR TURTLE FUND, LIMITED PARTNERSHIPGuilford, CT · Cancelled | Guilford, CT | Partnership | Oct 1, 2003 | Cancelled |
| PROSPECTOR ASSOCIATES II, L.L.C.Guilford, CT · Withdrawn | Guilford, CT | LLC | Oct 2, 2003 | Withdrawn |
| PROSPECTOR ASSOCIATES III, LIMITED LIABILITY COMPANYGuilford, CT · Withdrawn | Guilford, CT | LLC | Feb 24, 2006 | Withdrawn |
| PROSPECTOR ASSOCIATES IV, LIMITED LIABILITY COMPANYGuilford, CT · Withdrawn | Guilford, CT | LLC | Sep 25, 2006 | Withdrawn |
| JGJC INVESTMENTS, LLCGuilford, CT · Withdrawn | Guilford, CT | LLC | Feb 9, 2007 | Withdrawn |
| PROSPECTOR FUNDS, INC.Guilford, CT · Withdrawn | Guilford, CT | Corporation | Aug 31, 2007 | Withdrawn |
| OCEANVIEW CT, LLCGuilford, CT · Active | Guilford, CT | LLC | Jul 10, 2009 | Active |
| OBS-TX, LLCGuilford, CT · Dissolved | Guilford, CT | LLC | Jan 10, 2017 | Dissolved |
| NF-MAG, LLCGuilford, CT · Active | Guilford, CT | LLC | Jun 16, 2017 | Active |
| GUILFORD HITCHCOCK, LLCGuilford, CT · Dissolved | Guilford, CT | LLC | Dec 20, 2017 | Dissolved |
| PROSPECTOR K, LLCGuilford, CT · Dissolved | Guilford, CT | LLC | Feb 12, 2018 | Dissolved |
| BAYISLAND, LLCGuilford, CT · Active | Guilford, CT | LLC | Dec 20, 2018 | Active |
| GFTG, LLCGuilford, CT · Active | Guilford, CT | LLC | Feb 28, 2020 | Active |
| DANESEYE LLCGuilford, CT · Dissolved | Guilford, CT | LLC | Sep 28, 2020 | Dissolved |