| HAMPTON FAMILY FORESTSPortland, OR · Active | Portland, OR | Other | Nov 16, 2015 | Active |
| HAMPTON LUMBER MILLS - BANKS, INC.Banks, OR · Active | Banks, OR | Corporation | Aug 9, 2016 | Active |
| HAMPTON LUMBER SALESPortland, OR · Active | Portland, OR | Other | Jan 31, 2003 | Active |
| TRANS-PACIFIC TRADINGPortland, OR · Active | Portland, OR | Other | Jan 30, 2017 | Active |
| HAMPTON INVESTMENT COMPANYPortland, OR · Active | Portland, OR | Corporation | Jan 25, 1979 | Active |
| HAMPTON VINEYARDSPortland, OR · Active | Portland, OR | Other | Feb 11, 2019 | Active |
| HAMPTON RESOURCES, INC.Portland, OR · Active | Portland, OR | Corporation | Jan 14, 1983 | Active |
| AGENCY CREEK MANAGEMENT CO.Portland, OR · Active | Portland, OR | Corporation | Jan 23, 1984 | Active |
| HAMPTON LUMBERPortland, OR · Active | Portland, OR | Other | Mar 25, 2021 | Active |
| HAMPTON FAMILY VINEYARDS, LLCPortland, OR · Active | Portland, OR | LLC | Aug 6, 2021 | Active |
| IDT HOLDING, LLCPortland, OR · Active | Portland, OR | LLC | Jun 18, 2022 | Active |
| HAMPTON TIMBER, LLCPortland, OR · Active | Portland, OR | LLC | Jun 20, 2023 | Active |
| TRAPA FOREST PRODUCTS USPortland, OR · Active | Portland, OR | Other | Sep 5, 2023 | Active |
| HAMPTON LUMBER MILLS - ALLENDALE, LLCPortland, OR · Active | Portland, OR | LLC | May 19, 2025 | Active |
| MID-VALLEY RESOURCES, INC.Portland, OR · Active | Portland, OR | Corporation | Jun 11, 1992 | Active |
| HAMPTON TREE FARMS, LLCPortland, OR · Active | Portland, OR | LLC | Feb 1, 1947 | Active |
| HAMPTON RAILWAY, LLCPortland, OR · Active | Portland, OR | LLC | May 26, 1995 | Active |
| HAMPTON AFFILIATESPortland, OR · Active | Portland, OR | Other | May 1, 1997 | Active |
| TILLAMOOK LUMBER COMPANYTillamook, OR · Active | Tillamook, OR | Other | Feb 23, 1987 | Active |
| HAMPTON MANAGEMENT COMPANY, LLCPortland, OR · Active | Portland, OR | LLC | May 18, 1999 | Active |
| HAMPTON DISTRIBUTION COMPANIES, LLCPortland, OR · Active | Portland, OR | LLC | May 31, 1966 | Active |
| WILLAMINA LUMBER COMPANYWillamina, OR · Active | Willamina, OR | Other | Dec 15, 2000 | Active |
| TRAPA USPortland, OR · Active | Portland, OR | Other | Aug 20, 2012 | Active |
| TRANS PACIFIC TRADING USPortland, OR · Active | Portland, OR | Other | Aug 20, 2012 | Active |
| HAMPTON LUMBER MILLS, INC.Portland, OR · Active | Portland, OR | Corporation | Apr 29, 1970 | Active |
| HAMPTON EXPORT, INC.Portland, OR · Active | Portland, OR | Corporation | Jun 13, 2013 | Active |