| PLANT CITY GALEN LLCTampa, FL · Inactive | Tampa, FL | LLC | Mar 1, 2011 | Inactive |
| ST PETE HOUSING, LLCSaint Petersburg, FL · Inactive | Saint Petersburg, FL | LLC | Aug 23, 2011 | Inactive |
| APPOGRE LLCMelbourne Beach, FL · Inactive | Melbourne Beach, FL | LLC | Nov 3, 2011 | Inactive |
| VIRTUS HOUSING, LLCTampa, FL · Inactive | Tampa, FL | LLC | Feb 3, 2012 | Inactive |
| MOTH INVESTMENTS, L.L.C.St. Petersburg, FL · Inactive | St. Petersburg, FL | LLC | Feb 3, 2012 | Inactive |
| 7TH ON 7TH, L.L.C.St. Petersburg, FL · Inactive | St. Petersburg, FL | LLC | Feb 23, 2012 | Inactive |
| ZENTECH, LLCTampa, FL · Inactive | Tampa, FL | LLC | Apr 26, 2012 | Inactive |
| BEYOND HORIZON PROFESSIONAL SERVICES, LLCSanford, FL · Inactive | Sanford, FL | LLC | May 2, 2012 | Inactive |
| FCHI, LLCBradenton, FL · Active | Bradenton, FL | LLC | Jul 26, 2013 | Active |
| O'BRIEN PARTS & EQUIPMENT, LLCOdessa, FL · Inactive | Odessa, FL | LLC | Nov 20, 2013 | Inactive |
| CLUBSRQ LLCSarasota, FL · Inactive | Sarasota, FL | LLC | Jan 30, 2014 | Inactive |
| ST PETE 4 RENT, LLCSaint Petersburg, FL · Inactive | Saint Petersburg, FL | LLC | Apr 23, 2014 | Inactive |
| BEACON TAHOE, LLCNaples, FL · Inactive | Naples, FL | LLC | Dec 12, 2014 | Inactive |
| CONSERVATION GEOGRAPHICS, LLCJacksonville, FL · Inactive | Jacksonville, FL | LLC | May 24, 2016 | Inactive |
| MOB CLEANING SERVICES, LLCSanford, FL · Inactive | Sanford, FL | LLC | Aug 16, 2016 | Inactive |
| O'BRIENS SMALL ENGINE REPAIR L.L.C.Tallahassee, FL · Inactive | Tallahassee, FL | LLC | Sep 22, 2017 | Inactive |
| MKOB DESIGN LLCHobe Sound, FL · Inactive | Hobe Sound, FL | LLC | Oct 20, 2017 | Inactive |
| O'BRIEN ESTATE LLCHobe Sound, FL · Inactive | Hobe Sound, FL | LLC | Mar 14, 2018 | Inactive |
| IONCLASSIC LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 2, 2019 | Active |
| SAFETY HARBOR INDUSTRIAL GROUP LLCSaint Petersburg, FL · Active | Saint Petersburg, FL | LLC | Feb 6, 2019 | Active |
| SO JEEP, LLCCasselberry, FL · Inactive | Casselberry, FL | LLC | Feb 18, 2019 | Inactive |
| IGUARDU TECHNOLOGIES, LLCWinter Park, FL · Inactive | Winter Park, FL | LLC | Nov 2, 2020 | Inactive |
| O'BRIEN & CO. LLCGainesville, FL · Inactive | Gainesville, FL | LLC | Nov 12, 2020 | Inactive |
| MIKE O'BRIEN CPA LLCGulf Breeze, FL · Inactive | Gulf Breeze, FL | LLC | Dec 15, 2023 | Inactive |
| PRO-VISIONS, INC.Orlando, FL · Inactive | Orlando, FL | Corporation | Oct 17, 1989 | Inactive |
| HAYS 115 LLCSanford, FL · Inactive | Sanford, FL | LLC | Apr 3, 2024 | Inactive |
| TECH TROOPERS , LLCWeeki Wachee, FL · Inactive | Weeki Wachee, FL | LLC | May 21, 2024 | Inactive |
| AEROVISION GROUP, LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Jul 17, 2024 | Inactive |
| PREMIER CARE MANAGEMENT OF FLORIDA, LLCSarasota, FL · Active | Sarasota, FL | LLC | Aug 7, 2024 | Active |
| MRO DEVELOPMENT FL, LLCSt. Petersburg, FL · Active | St. Petersburg, FL | LLC | Jan 15, 2026 | Active |
| SYNERGY HEALTHCARE CONSULTANTS 1, LLCClearwater, FL · Active | Clearwater, FL | LLC | Apr 22, 2026 | Active |
| MICHAEL O'BRIEN COMPANY, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Dec 12, 1989 | Inactive |
| 37TH AVENUE, INC.Tampa, FL · Inactive | Tampa, FL | Corporation | Jan 5, 1990 | Inactive |
| WHG COMPANIES, INC.Orlando, FL · Inactive | Orlando, FL | Corporation | Jun 13, 1990 | Inactive |
| LANTANA EIGHTH AVENUE CORP.Tampa, FL · Inactive | Tampa, FL | Corporation | Aug 14, 1990 | Inactive |
| RPM HOLDINGS GROUP, L.L.C.Location not reported, FL · Inactive | Location not reported, FL | LLC | Jan 10, 2005 | Inactive |
| ROHN PRODUCTS, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Nov 7, 2008 | Active |
| ZONE SKIP LOGISTICS LLCEnglewood, FL · Inactive | Englewood, FL | LLC | Oct 13, 2022 | Inactive |
| MOB PROPERTIES 5 LLCSt. Petersburg, FL · Active | St. Petersburg, FL | LLC | Dec 10, 2025 | Active |
| O'BRIEN ENVIRONMENTAL SERVICES, INC.Melrose, FL · Inactive | Melrose, FL | Corporation | Dec 16, 1986 | Inactive |
| MICHAEL O'BRIEN & ASSOCIATES, INC.Englewood, FL · Inactive | Englewood, FL | Corporation | Jan 22, 1988 | Inactive |
| CENTRAL FLORIDA PUBLIC SAFETY EMPLOYEES ASSISTANCE CORPORATION, INC.Orlando, FL · Inactive | Orlando, FL | Nonprofit | Jul 26, 2002 | Inactive |
| VILLAS AT REGAL PALMS ASSOCIATION, INC.Location not reported, FL · Active | Location not reported, FL | Nonprofit | Nov 7, 2006 | Active |
| FOE SUNSHINE AERIE GAINESVILLE FL 4518 INCGainesville, FL · Inactive | Gainesville, FL | Nonprofit | Nov 7, 2008 | Inactive |
| FOXFIRE VILLAS II HOMEOWNERS ASSOCIATION, INC.Naples, FL · Active | Naples, FL | Nonprofit | Jan 6, 1986 | Active |
| OASIS HIGH SCHOOL BOOSTER CLUB, INC.Cape Coral, FL · Inactive | Cape Coral, FL | Nonprofit | Aug 11, 2016 | Inactive |
| NORTHWEST FLORIDA TRACK CLUB, INC.Shalimar, FL · Active | Shalimar, FL | Nonprofit | Jul 20, 1992 | Active |
| CAPRI CONDOMINIUM OWNERS ASSOCIATION, INC.Jacksonville, FL · Active | Jacksonville, FL | Nonprofit | Dec 9, 1992 | Active |
| BUFFINGTON MINISTRIES, INC.Lakeland, FL · Inactive | Lakeland, FL | Nonprofit | Oct 18, 1993 | Inactive |
| CALOOSA POINT II PROPERTY OWNERS' ASSOCIATION, INC.Apollo Beach, FL · Active | Apollo Beach, FL | Nonprofit | Oct 17, 1994 | Active |