| Alder Oy | Administrative & support | 2021 |
| Artome Oy | Manufacturing | 2016 |
| Botnia Poles Oy | Real estate | 1993 |
| Briketix Oy | Wholesale & retail | 2008 |
| Cabace Oy | Transport & logistics | 2018 |
| Digihoki Oy | Information & communication | 2023 |
| Dormie Oy | Wholesale & retail | 2010 |
| EH-AUTOMATION & Forest Oy | Manufacturing | 2011 |
| Eristysvelho Oy | Construction | 2008 |
| Geokaivot Oy | Construction | 2021 |
| HM-Mekano Oy | Manufacturing | 1991 |
| Hyvinvointipalvelut ElonWirta Oy | Health & social care | 2024 |
| Jamagic Oy | Information & communication | 2023 |
| KAIK3N Oy | Professional & scientific | 2024 |
| Kassahuolto Oy | Manufacturing | 2026 |
| Kiinteistö Oy Jytinä | Real estate | 1978 |
| Kollect Oy | Real estate | 2003 |
| LUSKA Oy | Administrative & support | 2013 |
| Lahden Johtokartoitus Oy | Construction | 2020 |
| Lahen matkailumiehet oy | Hospitality | 2018 |
| Latvo Oy | Manufacturing | 2019 |
| Luontoturva Ky | Administrative & support | 2015 |
| Maansiirto Dahl Oy | Construction | 2021 |
| Metsä-Kivistö Oy | Agriculture & fishing | 2015 |
| Movio OY | Transport & logistics | 2026 |
| Nastolan Puu- ja Vuolutuote Oy | Construction | 1997 |
| Nature Escape Oy | Arts & recreation | 2018 |
| Nummelin-Salomaa Holding Oy | Professional & scientific | 2026 |
| P & T Frantsi Oy | Education | 1997 |
| Porter Kiinteistöhuolto OY | Administrative & support | 2015 |
| Pro-Shop Koippari Oy | Wholesale & retail | 1993 |
| Pronor Control Oy | Professional & scientific | 2005 |
| Rakennuskuljetus Teuvo Lind Ky | Transport & logistics | 1983 |
| RestaurointiWerstas Lind Ky | Other services | 2012 |
| Robar Oy | Hospitality | 2010 |
| Siponen Consulting Oy | Professional & scientific | 2024 |
| Soppa & Tykki Ky | Hospitality | 2015 |
| Sportif Finland Oy | Wholesale & retail | 2018 |
| Suomen Urheiluopiston Kannatusosakeyhtiö | Arts & recreation | 1927 |
| Säyhde Oy | Wholesale & retail | 1970 |
| Veristi Oy | Professional & scientific | 2007 |
| Versowood Group Oy | Manufacturing | 1990 |
| Versowood Oy | Manufacturing | 1997 |
| Vierumäen Infra Oy | Energy | 2009 |
| Vierumäen Kelokrouvi Ky | Hospitality | 1999 |
| Vierumäen Kuntokylä Oy | Real estate | 1986 |
| Vierumäen Kuntorinne Oy | Real estate | 1990 |
| Vierumäen Lepoaika Oy | Professional & scientific | 1989 |
| Vierumäen Matkakeidas Oy | Hospitality | 2010 |
| Vierumäen Paavonkangas Oy | Real estate | 2010 |
| Vierumäki Country Club Oy | Hospitality | 2008 |
| Vierumäki Golf Club Oy | Arts & recreation | 2003 |
| Vierumäki Golf Oy | Arts & recreation | 1986 |
| Vierumäki Sports Oy | Hospitality | 2020 |
| Weckman Halli Oy | Real estate | 1983 |
| Weckman Steel Oy | Manufacturing | 1962 |
| Weckman Works Oy | Manufacturing | 1982 |