| 5th Anchor Oy | Professional & scientific | 2026 |
| A&S Palvelut Oy | Construction | 2025 |
| A-Valokaari Oy | Manufacturing | 2015 |
| Aah-Keittiöt Ky | Manufacturing | 2002 |
| AG-Kone Oy | Agriculture & fishing | 2025 |
| AJV-Agri Oy | Agriculture & fishing | 2025 |
| AT-Maasto Oy | Professional & scientific | 2008 |
| Aaraka Oy | Real estate | 2017 |
| Akkuhuolto ja Myynti Kaappola Ky | Wholesale & retail | 1965 |
| Aluetaito Oy | Professional & scientific | 2010 |
| Alvar House Oy | Real estate | 2019 |
| Ana-Digi Automaatio Oy | Construction | 1997 |
| Annun Kaluste Ky | Wholesale & retail | 2005 |
| Anssi Huhtala Oy | Construction | 2025 |
| Apex Blackforge Partners Oy | Professional & scientific | 2026 |
| Arboc Oy | Real estate | 2013 |
| ArcticDrop Commerce Oy | Wholesale & retail | 2025 |
| Arkkitehtitoimisto Hilkka Maija Antila Ky | Professional & scientific | 1989 |
| Arkkukari Kiinteistöt Oy | Hospitality | 2015 |
| Artumort Ky | Administrative & support | 2011 |
| Assurance Huhtala Oy | Professional & scientific | 2020 |
| Atonce Oy | Construction | 2010 |
| Atso Rakennus Oy | Construction | 2000 |
| Aurinko Jussi Oy | Other services | 2022 |
| Autmet, avoin yhtiö | Other services | 2004 |
| Autokoulu Ajopari avoin yhtiö | Education | 1967 |
| Autokoulu Atlas Oy | Education | 1998 |
| Automaalaamo H.Haapoja Oy | Other services | 2021 |
| Autosähkö Saarimaa Oy | Other services | 2010 |
| Autovalinta Virrankoski Ky | Wholesale & retail | 1983 |
| Avinet Oy | Hospitality | 2000 |
| Avoin yhtiö Lasse ja Kaisa Erikoinen | Wholesale & retail | 1994 |
| Avoin yhtiö Ruined Entertainment | Arts & recreation | 2014 |
| BMP trading Avoin Yhtiö | Wholesale & retail | 2014 |
| Bambumies Oy | Professional & scientific | 2023 |
| Barbo Oy | Agriculture & fishing | 2014 |
| Beast Mode Holding Oy | Professional & scientific | 2025 |
| Beat Brothers Osk | Arts & recreation | 2014 |
| Best Bake Sjk Ky | Wholesale & retail | 2011 |
| Best Car Rental Finland Oy | Administrative & support | 2012 |
| BestMove Oy | Wholesale & retail | 2018 |
| Bitrace Oy | Information & communication | 2003 |
| Boreale Group Solutions Oy | Professional & scientific | 2026 |
| Botnia Raceway Oy | Arts & recreation | 2000 |
| Botnia Star Group BSG Oy | Wholesale & retail | 2015 |
| Botnia-Kaluste kommandiittiyhtiö, Timo Haapoja | Wholesale & retail | 1977 |
| Bratia Oy | Construction | 2024 |
| Burger & Cafe Place Oy | Hospitality | 2017 |
| Capaja Oy | Financial services | 2019 |
| Car-Time Avoin yhtiö (Ay) | Manufacturing | 2004 |
| Centro Oy | Wholesale & retail | 1988 |
| Chemigate Oy | Manufacturing | 2009 |
| Cirolli Oy Ltd | Hospitality | 1995 |
| Claudio Ky | Information & communication | 1990 |
| Cool-Heat ky | Construction | 2016 |
| Curlix Oy | Wholesale & retail | 1995 |
| DL Data Oy | Wholesale & retail | 1993 |
| DL Energy Oy | Construction | 2024 |
| Dammtel Oy | Construction | 2001 |
| Data Comp Oy | Wholesale & retail | 2014 |
| Downtown Bowling Oy | Arts & recreation | 2009 |
| Dumpperi Tero Oy | Construction | 2008 |
| E-P:n Kattotimpurit Oy | Wholesale & retail | 1996 |
| E-P:n Kuvapalvelu Oy | Professional & scientific | 1989 |
| E-P:n RAKENNUSAPU KY | Professional & scientific | 2002 |
| E-P:n Rakennus & Maalaus Oy | Construction | 2006 |
| E-Trade Oy | Manufacturing | 2023 |
| Emp Service OY | Construction | 2003 |
| EP Farmifix OY | Manufacturing | 2026 |
| ESales & Consulting Oy | Other services | 2021 |
| ETC Makers Oy | Manufacturing | 2012 |
| Ecoferti Oy | Wholesale & retail | 2019 |
| Edustusliike J. Salo Ky | Wholesale & retail | 2006 |
| EePeen Aparaatti Oy | Administrative & support | 2023 |
| Eelevi Oy | Financial services | 2023 |
| Emberin Ruoka Oy | Hospitality | 2021 |
| Ergoing Oy | Professional & scientific | 2022 |
| Etelä-Pohjanmaan Rakennuspalvelu Oy | Construction | 2006 |
| Etelä-Pohjanmaan hevospalvelut Oy | Education | 2024 |
| European Plastic Recycling and Development, EPRD Oy Ltd | Water & waste | 2015 |
| Fieldhill Production Oy | Professional & scientific | 1996 |
| Fintec Oy | Wholesale & retail | 2004 |
| Fit Local Oy | Arts & recreation | 2019 |
| FlexPartner Oy | Professional & scientific | 2018 |
| Forzatek Oy | Wholesale & retail | 2016 |
| FullSteel Finland Oy | Manufacturing | 2019 |
| Fysikaalinen Hoitola Taina Luoma Oy | Health & social care | 2012 |
| FysioNuppu Oy | Health & social care | 2018 |
| GR Invest Oy | Financial services | 2024 |
| Gameseven Oy | Arts & recreation | 2021 |
| Gashill Oy | Manufacturing | 2006 |
| Gemelli Oy | Wholesale & retail | 2013 |
| Geoper Oy | Construction | 2023 |
| Glassfibre Racing Ky | Administrative & support | 1990 |
| Graneco Oy | Construction | 1986 |
| Gregorius Consulting Oy | Professional & scientific | 2025 |
| Grintec Ltd Oy | Manufacturing | 2007 |
| H & J Pirttinen Ky | Wholesale & retail | 1989 |
| HAJATO Oy | Real estate | 2021 |
| HKTEK Oy | Construction | 2020 |