| PORT JAX 900-1000, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Feb 9, 2021 | Active |
| PORT JAX 500, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Feb 12, 2019 | Active |
| PORT JAX 800, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Feb 12, 2019 | Active |
| PORT JAX 1100-1200, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Jun 2, 2017 | Active |
| PORT JAX 200, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Feb 2, 2017 | Active |
| THEO HOLDINGS, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Nov 14, 2016 | Active |
| PORT JAX 700, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Jun 8, 2016 | Active |
| PORT JAX 300, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | May 23, 2014 | Active |
| PORT JAX 600, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Dec 9, 2013 | Active |
| PORT JAX 900, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Dec 17, 2012 | Active |
| PORT JAX LAND, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Mar 14, 2012 | Active |
| GROUP IV AVENUES, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Dec 23, 2008 | Active |
| GROUP IV INDUSTRIAL, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Dec 23, 2008 | Active |
| SPINNER CONSTRUCTION, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Dec 23, 2008 | Active |
| GROUP IV GREEN INDUSTRIAL, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Jun 11, 2008 | Active |
| GROUP IV 700-900, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Feb 28, 2007 | Active |
| INDUSTRIAL 100, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Apr 21, 2006 | Active |
| INDUSTRIAL 75, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Apr 21, 2006 | Active |
| PORT JAX 400, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Feb 24, 2006 | Active |
| SPINNER INVESTMENTS, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Apr 27, 2004 | Active |
| PARK PLACE AT THE AVENUES OWNERS ASSOCIATION, INC.Jacksonville, FL · Active | Jacksonville, FL | Nonprofit | Dec 10, 2003 | Active |
| PARK PLACE AVENUES, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Nov 10, 2003 | Active |
| GROUP IV CECIL, LLCJacksonville, FL · Inactive | Jacksonville, FL | LLC | Dec 23, 2008 | Inactive |
| BROOKLYN DODGERS, LLCJacksonville, FL · Inactive | Jacksonville, FL | LLC | Nov 12, 2009 | Inactive |
| PORT JAX 1200, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Aug 4, 2026 | Active |
| SPINNER CONSTRUCTION INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Feb 4, 1988 | Inactive |
| SOUTH JACKSONVILLE INDUSTRIAL PARK OWNER'S ASSOCIATION, INC.Jacksonville, FL · Active | Jacksonville, FL | Nonprofit | Dec 4, 1987 | Active |
| GROUP IV AVENUES, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Mar 21, 2003 | Inactive |
| GROUP IV CECIL, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Dec 1, 2004 | Inactive |
| GROUP IV CORPORATE SQUARE, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Jul 6, 2005 | Inactive |
| GROUP IV JAX DEVELOPMENT, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Feb 11, 1998 | Inactive |
| GROUP IV JAX DEVELOPMENT II, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Nov 10, 1999 | Active |