| MARSH RESOURCES, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Mar 29, 2002 | Inactive |
| WILLIAMS GP INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | May 30, 2002 | Inactive |
| WILLIAMS MIDSTREAM MARKETING AND RISK MANAGEMENT, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jun 17, 2002 | Inactive |
| BOK FINANCIAL SECURITIES, INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Jul 18, 2003 | Active |
| WILLIAMS EXPRESS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Aug 16, 2005 | Inactive |
| WILLIAMS EXPRESS INC. (AK)Location not reported, FL · Active | Location not reported, FL | Corporation | Apr 7, 2016 | Active |
| WILLIAMS NATURAL GAS LIQUIDS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | May 3, 1993 | Inactive |
| VYVX, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Nov 24, 1993 | Inactive |
| THERMOGAS COMPANYLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Mar 15, 1995 | Inactive |
| WILLIAMS ENTERPRISES OF DELAWARE, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Apr 14, 1995 | Inactive |
| WILLIAMS GAS MARKETING, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Aug 30, 1995 | Inactive |
| WILLIAMS TRAVELCENTERS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Dec 17, 1997 | Inactive |
| WILLIAMS WPC - I, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Sep 4, 1998 | Inactive |
| WILLIAMS ENERGY VENTURES, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jan 12, 1999 | Inactive |
| WILLIAMS LOCAL NETWORK, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Aug 19, 1999 | Inactive |
| DOMINION GAS PROJECTS COMPANY, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Apr 27, 2000 | Inactive |
| WILLIAMS GP LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Nov 16, 2000 | Inactive |
| WILLIAMS NGL, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Feb 16, 2001 | Inactive |
| WILLIAMS ENERGY SERVICES, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Mar 8, 2001 | Inactive |
| WILLIAMS MIDSTREAM MARKETING AND RISK MANAGEMENT, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Jul 25, 2002 | Inactive |
| WEG GP LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Feb 25, 2003 | Inactive |
| TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Dec 31, 2008 | Inactive |
| MARSH RESOURCES, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Jan 5, 2009 | Inactive |
| TRANSCO PIPELINE SERVICES LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Jan 11, 2010 | Inactive |
| WILLIAMS EXPRESS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 19, 2011 | Active |
| WPX ENERGY MARKETING, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Jul 27, 2011 | Inactive |
| WILLIAMS ACQUISITION HOLDING COMPANY LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Nov 20, 2012 | Active |
| WILLIAMS WPC - I, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Mar 29, 2013 | Active |
| WILLIAMS SOLAR HOLDCO LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Aug 10, 2023 | Active |
| WILLIAMS PIPELINE SERVICES LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Nov 21, 2023 | Active |
| WILLIAMS FIELD SERVICES COMPANY, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | May 24, 2024 | Active |
| EDGE SOLAR LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Aug 22, 2024 | Active |
| WILLIAMS FIELD SERVICES GROUP, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | May 29, 2026 | Active |
| GAS SUPPLY, L.L.C.Location not reported, FL · Inactive | Location not reported, FL | LLC | Aug 12, 1997 | Inactive |
| MAPCO SUPPLY & TRADING LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Nov 12, 1997 | Inactive |
| WILLIAMS REFINING & MARKETING, L.L.C.Location not reported, FL · Inactive | Location not reported, FL | LLC | Jan 25, 1999 | Inactive |
| BUCCANEER GAS PIPELINE COMPANY, L.L.C.Location not reported, FL · Inactive | Location not reported, FL | LLC | Mar 9, 1999 | Inactive |
| WILLIAMS GAS MARKETING COMPANYLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Apr 7, 1988 | Inactive |
| CENTEL COMMUNICATIONS SYSTEMS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jun 15, 1988 | Inactive |
| INGERSOLL-RAND ENHANCED RECOVERY COMPANYLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Oct 13, 1988 | Inactive |
| WTG - EAST, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Feb 22, 1989 | Inactive |
| WILTEL FINANCIAL CORPORATIONLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Aug 1, 1991 | Inactive |