| 1kkunat Oy | Construction | 2016 |
| A & M Asennus Oy | Construction | 2008 |
| AFG-Group Oy Ltd | Wholesale & retail | 2001 |
| AMP Pietilä Oy | Other services | 2000 |
| AR-PE Trailer Oy | Manufacturing | 1993 |
| Ab MAT Mattsson Oy | Wholesale & retail | 2025 |
| Agro-Forest Group Oy Ltd | Manufacturing | 1993 |
| Anssi Mäkinen Oy | Transport & logistics | 2020 |
| Anttilan Liikekiinteistöt Oy | Real estate | 1998 |
| Apetit Ruoka Oy | Manufacturing | 1994 |
| Arcxo CleanTech Oy | Manufacturing | 1992 |
| Ari Markkula Oy | Mining & quarrying | 1995 |
| Asianajotoimisto Markku Simula Oy | Professional & scientific | 1996 |
| Aspisle Oy | Administrative & support | 2009 |
| Automaalaus Kallio Oy | Other services | 2021 |
| Avoin yhtiö Köyliön Pitopalvelu | Hospitality | 1989 |
| Baristo Solutions Oy | Professional & scientific | 2025 |
| Beewares Enlightened Enterprises Oy | Agriculture & fishing | 2023 |
| Benin Kuitu Oy | Professional & scientific | 2020 |
| Betonisahaus Kaino Kupela Oy | Construction | 1987 |
| Bilfac Oy | Wholesale & retail | 1988 |
| Broilan Oy | Agriculture & fishing | 2005 |
| Broilertuotanto-Mattila Oy | Agriculture & fishing | 2005 |
| CFF Säkylä Oy | Administrative & support | 2018 |
| Cafeija Oy | Hospitality | 2005 |
| Digiteekki Oy | Information & communication | 2004 |
| EKK-Tuotanto Oy | Agriculture & fishing | 2014 |
| Electrokoonta Oy | Financial services | 1990 |
| Elogical Networks Oy | Professional & scientific | 2000 |
| Epomax Oy | Construction | 2011 |
| Eppos Oy | Manufacturing | 2006 |
| Erämaja Oy | Real estate | 1947 |
| Eve Estates Oy | Real estate | 2026 |
| F-graphics Oy | Professional & scientific | 2014 |
| Fiander Graphics Oy | Professional & scientific | 2007 |
| FinPuro Oy | Wholesale & retail | 2020 |
| Finnegrip Oy | Manufacturing | 1994 |
| Finnish Incrementum Funding Oy | Administrative & support | 2021 |
| Forssan Vihannestukku Jukka Lähteenmäki Ky | Wholesale & retail | 1974 |
| Funerca Oy | Other services | 2010 |
| GreenCI.fi Oy | Manufacturing | 2021 |
| HK-Urakointi Oy | Administrative & support | 2012 |
| HR-Rakentajat Oy | Construction | 2023 |
| Haamula Oy | Health & social care | 2019 |
| Hammaslääkäri Sari Simula Oy | Health & social care | 2003 |
| Hannu Kemppainen Ky | Construction | 1997 |
| Happy Finance Oy | Professional & scientific | 1986 |
| Hellä Huusholli Oy | Health & social care | 2021 |
| Helmek Oy | Manufacturing | 1990 |
| Helmi-Tuotanto Oy | Arts & recreation | 2021 |
| Hillhouse Oy | Real estate | 2020 |
| Hilvan Oy | Hospitality | 2025 |
| Huhtimanni Oy | Administrative & support | 2017 |
| Hulmi Consulting Oy | Professional & scientific | 2019 |
| Huoltosähkö Oy | Manufacturing | 2010 |
| Huovinrinteen kerhoyhtiö oy | Real estate | 2019 |
| Hurmås Neule Oy | Manufacturing | 2021 |
| Ilolan Tila Oy | Agriculture & fishing | 2009 |
| IntLog Oy | Construction | 2010 |
| J & H Asennus Oy | Construction | 2008 |
| JE Vuokraus Oy | Real estate | 2024 |
| JJR-Nostot Ay avoin yhtiö | Construction | 2004 |
| JKRoboweld Group Oy | Financial services | 2026 |
| JM Business Solutions Oy | Administrative & support | 2016 |
| JS-hair avoin yhtiö | Other services | 2014 |
| Jasimite Oy | Manufacturing | 2026 |
| Jere Tamminen Oy | Transport & logistics | 2011 |
| Järviseudun Sähkö-Peltonen Oy | Professional & scientific | 2001 |
| Kainotar Oy | Manufacturing | 2010 |
| Kankaanrannan Vihannes Oy | Wholesale & retail | 1986 |
| Kannustakuljetakustanna Oy | Arts & recreation | 2024 |
| Keku Invest Oy | Financial services | 2022 |
| Kelloliike Kankare Ky | Wholesale & retail | 1975 |
| Kep's Investments Oy | Information & communication | 2022 |
| Kiinteistö Oy Andellinmäki | Real estate | 1986 |
| Kiinteistö Oy Juhola | Real estate | 2013 |
| Kiinteistö Oy Kuusamon Free Willa | Real estate | 2010 |
| Kiinteistö Oy Loimaan Ropo | Real estate | 1989 |
| Kiinteistö Oy Merisuntti | Real estate | 1984 |
| Kiinteistö Oy Oratoppi | Real estate | 1992 |
| Kiinteistö Oy Sataharju | Real estate | 1992 |
| Kiinteistö Oy Sähkö Parkki | Real estate | 2010 |
| Kiinteistö Oy Säkylän Pankinranta | Real estate | 1989 |
| Kiinteistö Oy Säkylän Talot | Real estate | 1973 |
| Kiinteistö Oy Uuruka | Real estate | 1991 |
| Kiinteistö Oy Vatitehdas | Real estate | 1985 |
| Kiinteistöosakeyhtiö Maijan Kauppa Oy | Real estate | 2007 |
| Kiinteistöosakeyhtiö Väinönmaa | Real estate | 2007 |
| Kiinteistötupa Oy | Real estate | 2008 |
| Kimdea Oy | Information & communication | 2013 |
| Kokemäen Ambulanssipalvelu Oy | Health & social care | 1990 |
| Kokemäen Virkut Oy | Transport & logistics | 2020 |
| Komia Invest Oy | Financial services | 2018 |
| Kone Kuusisto Oy | Manufacturing | 2012 |
| Konekiesi Oy | Other services | 2015 |
| Konekorjaamo R. Raitanen Ky | Other services | 1989 |
| Konekuljettajat Matarmaa Ky | Construction | 2005 |
| Korpilammen tila oy | Other services | 2015 |
| Koukkukuljetus Hulmi Ky | Transport & logistics | 2023 |
| Kukka ja sisustus Ohrantähkä Oy | Wholesale & retail | 2021 |