| ARP Palvelut Oy | Professional & scientific | 2026 |
| Anne Tallila Oy | Real estate | 2015 |
| Cadmek Oy | Professional & scientific | 2013 |
| Fim Laskentapalvelut Oy | Professional & scientific | 1996 |
| Fim Therapy and Consulting Oy | Administrative & support | 1993 |
| Fim Yrityspalvelut Oy | Professional & scientific | 1989 |
| H Kiinteistöhuolto Ky | Administrative & support | 2024 |
| Hajatuote OY | Construction | 2020 |
| HR-Ikkunat Oy | Manufacturing | 2005 |
| Hannula Pekka Oy | Administrative & support | 2008 |
| J. Kannus Oy | Manufacturing | 2020 |
| Jari Niemi & kni | Construction | 1991 |
| Jusmill Oy | Transport & logistics | 2011 |
| Kalajoen Ratsupalvelut Avoin Yhtiö | Arts & recreation | 2015 |
| Kalajoen Karkkipaja Avoin Yhtiö | Manufacturing | 1989 |
| Kalajoen Marjatuote Mehuasema Oy | Manufacturing | 2021 |
| Kalajoen Paineilmatekniikka Ky | Manufacturing | 1991 |
| Kalajoen Talotekniikka Oy | Construction | 2019 |
| Kalajoen Vierivainio Oy | Real estate | 1991 |
| Kestää Oy | Manufacturing | 2024 |
| Konepalvelu Kupari Oy | Construction | 2008 |
| Koneurakointi Asko Rahja Ky | Construction | 1990 |
| Kontioforest Oy | Agriculture & fishing | 2002 |
| Kuljetusliike Esa Ruhkala Oy | Transport & logistics | 1983 |
| Käännän Itu ja Elo Oy | Agriculture & fishing | 2011 |
| Lapinojan Peruna Oy | Manufacturing | 1998 |
| Maanrakennus Vinita Oy | Construction | 2000 |
| Maary Oy | Other services | 2018 |
| Matjanik Oy | Construction | 2022 |
| Mytec Oy | Wholesale & retail | 2008 |
| Mäkelän Maito Oy | Agriculture & fishing | 2024 |
| Nikonmäen Peruna Oy | Manufacturing | 1999 |
| Otto Hihnala Oy | Financial services | 2020 |
| Peltolan Peruna Oy | Wholesale & retail | 1998 |
| Pohjolan Pikalähetit Ky | Transport & logistics | 2003 |
| R & P Alasuvanto Oy | Transport & logistics | 2018 |
| Ryhmäperhepäiväkoti Halinalle Ky | Education | 2013 |
| T Isopahkalan Turkis Oy | Agriculture & fishing | 1995 |
| Taksi Kalajoki Oy | Transport & logistics | 2019 |
| Tallilan Taksi Oy | Transport & logistics | 2011 |
| Tavastin Peruna Ky | Transport & logistics | 1996 |
| Tuna Oy | Agriculture & fishing | 2017 |
| Tyngän Asennus Oy | Construction | 2022 |
| Työ- ja asennuspalvelu Miika Tilvis Oy | Construction | 2020 |
| Vihertyö Niskanen Oy | Construction | 1993 |
| Westend Estate Oy | Professional & scientific | 1998 |
| Yhtymä Simi & Kumpp. | Construction | 1980 |