| 62FINANCE AB OY | Administrative & support | 2020 |
| 62FINLAND OY AB | Wholesale & retail | 2013 |
| A & A Sjöholm AB | Health & social care | 2003 |
| A-Man Ab Oy | Professional & scientific | 2003 |
| AL-Byggservice Ab | Construction | 2021 |
| AMP-Jutas Ab | Professional & scientific | 2008 |
| Ab Brännskata Fiskare | Wholesale & retail | 1990 |
| Ab Datarot Oy | Financial services | 1987 |
| Ab ENPO Oy | Professional & scientific | 2017 |
| Ab Elora Oy | Construction | 1989 |
| Ab Farmtjänst-Sorvist | Construction | 2013 |
| Ab Feora Oy | Manufacturing | 1979 |
| Ab Fiber-Form Haglund Oy | Manufacturing | 1995 |
| Ab Freddan Oy | Wholesale & retail | 2021 |
| Ab HS-Logging Oy | Agriculture & fishing | 2003 |
| Ab Hammarplan Oy | Professional & scientific | 1992 |
| Ab Helsing Transport Oy | Transport & logistics | 1987 |
| Ab Herman Custom Made Oy | Manufacturing | 2024 |
| Ab J. Holm Oy | Administrative & support | 2008 |
| Ab Jakobstads Byggnadstjänst - Pietarsaaren Rakennuspalvelu | Manufacturing | 1960 |
| Ab Jannikas Oy | Agriculture & fishing | 1988 |
| Ab Jeppo Lantgris Oy | Agriculture & fishing | 2001 |
| Ab Kalliopeja Oy | Arts & recreation | 2013 |
| Ab Karment Oy | Real estate | 1989 |
| Ab Kaspro Oy | Other services | 2008 |
| Ab LOL-Sorvist | Agriculture & fishing | 2013 |
| Ab NY-JA Clean Air Consulting Oy | Professional & scientific | 2024 |
| Ab NY-JA IAQ Oy | Administrative & support | 2001 |
| Ab Ny-Ja Sotnings- och fastighetsservice Oy | Administrative & support | 1986 |
| Ab NyAutomation Oy | Information & communication | 2026 |
| Ab Nykarleby Ekopaint Oy | Manufacturing | 1991 |
| Ab Nykarleby Ishall - Uudenkarlepyyn Jäähalli Oy | Arts & recreation | 2008 |
| Ab Nyko Oy | Manufacturing | 1965 |
| Ab Nykoprint Oy | Manufacturing | 1982 |
| Ab Nålörn | Agriculture & fishing | 1992 |
| Ab Ostrocenter Oy | Wholesale & retail | 1990 |
| Ab PMP Invest Oy | Financial services | 2002 |
| Ab Pro Futura Oy | Professional & scientific | 1988 |
| Ab STYLE BETON Oy | Construction | 2014 |
| Ab Scandi Yachts Oy | Manufacturing | 2008 |
| Ab Sorvist Fox | Agriculture & fishing | 1996 |
| Ab Sunpe Oy | Construction | 2009 |
| Ab Tomas Asplund Oy | Transport & logistics | 2009 |
| Ab Verdek Oy | Construction | 1992 |
| Ab Wingrén & Nygrén | Real estate | 1978 |
| Algot Kronqvist Ab | Agriculture & fishing | 1982 |
| Allehanda Butik & Loppis Nykarleby öppet bolag | Wholesale & retail | 2012 |
| AllroundNordic Ab | Administrative & support | 2020 |
| Andelslaget Andrasjöns Oljekompani | Wholesale & retail | 1998 |
| Andrasjö vattenandelslag | Water & waste | 2023 |
| Anna's Taxi Ab | Transport & logistics | 2022 |
| Appeak Oy Ab | Professional & scientific | 2020 |
| Aurora Care Oy | Health & social care | 2022 |
| Autocontroll Kb | Other services | 1990 |
| Autoparts Nyvall AB | Wholesale & retail | 2012 |
| BJR Trading Ab | Financial services | 2020 |
| BT BackUp öppet bolag | Professional & scientific | 2018 |
| BVW Fastigheter Ab | Real estate | 2026 |
| Balansia Ab ekonomitjänster | Professional & scientific | 2014 |
| Begravningsbyrå Nygård Kb | Other services | 2025 |
| Bengt Jansson Ab | Financial services | 1985 |
| Bildbolaget Du&Vi Ab | Professional & scientific | 2010 |
| Bildström Kb | Wholesale & retail | 1981 |
| Bjorkvik Oy | Hospitality | 2025 |
| Björklunds Trafik Ab | Transport & logistics | 2020 |
| Björkroth Kb | Agriculture & fishing | 1985 |
| Blomqvist Byggtjänst Ab | Construction | 2013 |
| Blomström Transport Ab | Transport & logistics | 1990 |
| Bonäsvägens vattenandelslag | Water & waste | 2023 |
| Bostrand Ab | Agriculture & fishing | 2008 |
| Br Wingren Ab | Agriculture & fishing | 2004 |
| Br. Wikblad öppet bolag | Construction | 2007 |
| Brandified Ab Oy | Professional & scientific | 2019 |
| Brejk Ekonomitjänster Ab Oy | Professional & scientific | 2021 |
| Bröderna Backlund Ab Oy | Agriculture & fishing | 1975 |
| Bröderna Hagmans Pälsfarm Ab | Agriculture & fishing | 1971 |
| Bröderna Lindvalls mjölkgård öppet bolag | Agriculture & fishing | 2011 |
| Bröderna Nyvall Ab | Agriculture & fishing | 1967 |
| ByggStaff Ab | Construction | 2019 |
| Byggfirma JORAK Ab | Construction | 2013 |
| Byggservice Kronqvist Ab | Construction | 2008 |
| Byöns Pälsfarm Ab | Agriculture & fishing | 2003 |
| Bådan Villavattenandelslag | Water & waste | 2012 |
| C & M Clipshop Öppet Bolag | Other services | 1998 |
| CJ Altius Solutions Oy Ab | Manufacturing | 2010 |
| CJ Invest Oy Ab | Financial services | 2009 |
| CMP-Media öppet bolag | Education | 2005 |
| CNC-Design Finland Öppet bolag | Manufacturing | 2014 |
| Campen Food & Cake Ab Oy | Hospitality | 2018 |
| Christian Granvik Farm Ab | Agriculture & fishing | 1994 |
| Clean Chip Ab | Manufacturing | 2006 |
| Colorfix Ab | Other services | 2019 |
| Comty öppet bolag | Wholesale & retail | 2003 |
| Concept Simon Ab | Professional & scientific | 2017 |
| D-A Kåll Ab Oy | Administrative & support | 2022 |
| Double Edi Partners OY | Construction | 2020 |
| Dam- och herrfrisering Salon Gunne-May öppet bolag | Other services | 1996 |
| Dassl Oy Ab | Information & communication | 2018 |
| Deltop Group Ab | Real estate | 2023 |
| Diamantborrning T Fagerudd Ab | Construction | 1989 |