| 1-Maakari Ky | Wholesale & retail | 2011 |
| 2H Soodapuhallus Ky | Construction | 2010 |
| 9 Gigants OY | Wholesale & retail | 2018 |
| A-R. Turve Oy | Mining & quarrying | 2000 |
| AHO T Urakointi Oy | Construction | 2020 |
| AhMa Invest Oy | Agriculture & fishing | 2025 |
| Ahon Kiinteistöpalvelut Oy | Administrative & support | 1997 |
| Alanevan Kehitys Oy | Construction | 2007 |
| Annalan koneurakointi Oy | Construction | 2026 |
| Auto- ja Pyöräpalvelu Tapani ja Sirkka Rintala Ky | Wholesale & retail | 1975 |
| Auto- ja laitekorjaamo V. Rajala Ky | Other services | 1990 |
| Chaos Production Ky | Arts & recreation | 2013 |
| E-P:n Kioskitoiminnot Ky | Other services | 1989 |
| E. ja K. Pasto Ky | Other services | 1991 |
| EP:n Vahinkopalvelu Ky | Professional & scientific | 2015 |
| Eetu Laakso Oy | Construction | 2016 |
| Ekonomitoimisto Koskimäki Oy | Professional & scientific | 2017 |
| Etelä-Pohjanmaan Menopeli Ky | Wholesale & retail | 2003 |
| Etutori Ky | Wholesale & retail | 1988 |
| Farkkutuote Marja-Liisa Anttila Ky | Wholesale & retail | 1982 |
| Grillari Ky | Hospitality | 2016 |
| H R-T Laskenta Oy | Professional & scientific | 2014 |
| HS Kuvaus Ky | Professional & scientific | 2007 |
| Haavisto Rent Ky | Agriculture & fishing | 2012 |
| Hautauspalvelu P. Salonen Ky | Other services | 2011 |
| Hietalan Pirssi Ky | Transport & logistics | 1995 |
| Huhtimäen Tila Oy | Agriculture & fishing | 2018 |
| Irenrev Oy | Administrative & support | 2024 |
| J. Wilponen Ky | Wholesale & retail | 1982 |
| JHReno Oy | Construction | 2017 |
| JK-Siirto avoin yhtiö | Transport & logistics | 2007 |
| JKJ Perälä Oy | Agriculture & fishing | 2024 |
| JOYZEN Ky | Administrative & support | 1990 |
| Jessepe Avoin Yhtiö | Hospitality | 2007 |
| Jussi Mäntysalo Oy | Real estate | 1996 |
| Jutove Oy | Administrative & support | 2019 |
| Juupaluoman Paja Ky | Manufacturing | 2007 |
| Kouruweb Ky | Wholesale & retail | 2016 |
| Kaiku Instruments Oy | Manufacturing | 2021 |
| Kalajärven Laituri Oy | Arts & recreation | 1993 |
| Kalajärvi Beach Oy | Hospitality | 2023 |
| Kantti-Kiinteistöt Oy | Real estate | 2011 |
| Kiinteistö ja Konepalvelu Suokas Ky | Construction | 2008 |
| Kiinteistöyhtiö Koivutuvat Avoin Yhtiö | Real estate | 2010 |
| Kiinteistöyhtiö Ojaniemi Avoin yhtiö | Real estate | 1987 |
| Kolarikorjaamo Pentti Kaura Ky | Other services | 2000 |
| Koneurakointi J. Koivisto Ky | Water & waste | 1991 |
| Koneurakointi Syrjälä, avoin yhtiö | Construction | 2002 |
| Koukkukoipi Oy | Agriculture & fishing | 2026 |
| Kuljetus Säilä Oy | Transport & logistics | 2016 |
| LVI-Viitala Oy, Seppo Viitala | Construction | 1992 |
| Lagomaja Oy | Real estate | 1994 |
| Lakeuden Fysiokuntoutus Ky | Health & social care | 2011 |
| Lakeuden Komistus Oy | Other services | 2024 |
| Lakeuden Maataloustili Ky | Professional & scientific | 1998 |
| Lasi- ja maatalouspalvelu Virkkunen Ky | Agriculture & fishing | 1994 |
| Lindbergin Tila Oy | Agriculture & fishing | 2018 |
| Miksi OY | Health & social care | 2023 |
| MR-Kiinteistöt Oy | Real estate | 2009 |
| MR-Steel Oy | Manufacturing | 2018 |
| Maalausliike Köykkä Oy | Construction | 2007 |
| Maatalouspalvelu T. Haavisto Oy | Wholesale & retail | 2018 |
| Mamageri Oy | Professional & scientific | 2019 |
| Marine Surveys H. Soini Oy | Transport & logistics | 2008 |
| Marko Kaura Ky | Wholesale & retail | 1997 |
| Mehi-Pojat Ky | Manufacturing | 1992 |
| Mäntyharju Infra Oy | Construction | 2022 |
| Nevacon Oy | Construction | 2017 |
| Nitera Oy | Construction | 1991 |
| Ortila Oy | Mining & quarrying | 1983 |
| Oy Viitala Forest Group ltd | Manufacturing | 2015 |
| Oy Viitala Forest Ltd | Manufacturing | 1975 |
| PJ-Center Oy | Construction | 1998 |
| PKR-Building oy | Construction | 2017 |
| PS-Motors Ky | Other services | 2011 |
| Peatmax Oy | Manufacturing | 2013 |
| Peikkojoen Racing Ky | Wholesale & retail | 1990 |
| Peräseinäjoen Energiaosuuskunta | Energy | 1995 |
| Peräseinäjoen Fysiokeskus Ky | Health & social care | 1994 |
| Peräseinäjoen LVI-Kulma Oy | Real estate | 1985 |
| Peräseinäjoen LVI-Palvelu Ky | Construction | 1981 |
| Peräseinäjoen Sammutinhuolto Ky | Manufacturing | 1985 |
| Pinewood Global Oy | Transport & logistics | 1982 |
| Pohjanmaan Urakointi Ky | Mining & quarrying | 2003 |
| Rakennus M. Poutanen Ky | Construction | 2010 |
| Rose Nordica Oy | Wholesale & retail | 2019 |
| Rudec Oy | Manufacturing | 2024 |
| Ruoppaus Samppa Oy | Construction | 2011 |
| SKV Sepi Oy | Administrative & support | 2026 |
| Sami Kanto Ky | Manufacturing | 2008 |
| Seinäjoen Rivirakenne Oy | Construction | 2012 |
| Semetra Oy | Manufacturing | 2008 |
| Simba Experience Oy | Construction | 2009 |
| Sorsalammet Oy | Real estate | 2025 |
| Steeldeck Oy | Manufacturing | 2005 |
| TJ-Trans Oy | Transport & logistics | 2005 |
| TK Company Oy | Construction | 2020 |
| TOHA Vaappu Ky | Manufacturing | 2019 |
| Threesixteen Solutions Oy | Wholesale & retail | 2008 |
| VKV Service Ky | Other services | 2011 |