| A-Pekoni Nurmo Oy | Manufacturing | 2003 |
| A-Pihvi Kauhajoki Oy | Manufacturing | 2003 |
| A-Sikateurastamo Oy | Manufacturing | 2005 |
| A.T.Wisely Oy Ltd | Information & communication | 2009 |
| AJ Rakennus Oy Seinäjoki | Construction | 2023 |
| AKV-Asennus Oy | Construction | 1995 |
| Aimo Creative Oy | Professional & scientific | 2025 |
| Alatalon Pääoma Oy | Financial services | 1990 |
| Alvos Oy | Financial services | 2023 |
| Aristall Finland Ky | Real estate | 2007 |
| Ark 5 Oy | Professional & scientific | 2002 |
| Aruok Oy | Real estate | 1995 |
| Atria-Chick Oy | Manufacturing | 2004 |
| Atria-Lihavalmiste Oy | Manufacturing | 2004 |
| Atria-Tekniikka Oy | Manufacturing | 2003 |
| Atria-Tuoreliha Oy | Manufacturing | 2004 |
| Atria-Valmisruoka Oy | Manufacturing | 2004 |
| Audevia Oy | Professional & scientific | 2026 |
| Autelco Oy | Professional & scientific | 1995 |
| Autohuolto Korpikorjaamo Oy | Other services | 2021 |
| Automaalaamo Lampi Oy | Other services | 2010 |
| Autotalo AUTO22 Oy | Wholesale & retail | 2013 |
| Avoin yhtiö Seinäjoen Gastro Ravintolat | Hospitality | 2003 |
| BMF Productions Oy | Hospitality | 2022 |
| Benorca Oy | Wholesale & retail | 1993 |
| Bioriihi Ky | Professional & scientific | 2017 |
| CTM Kiinteistöt Oy | Real estate | 2012 |
| Carbon Group Oy | Financial services | 2024 |
| Careo Oy | Education | 2013 |
| Catcon Oy | Real estate | 2017 |
| Delb Oy | Professional & scientific | 2025 |
| Demlami Oy | Education | 2025 |
| Ditchhill Holding Oy | Real estate | 1996 |
| Drillmare Oy | Construction | 2012 |
| Dualcon Oy | Wholesale & retail | 2016 |
| E Kukkamäki Ky | Construction | 2000 |
| E.Tuokko Ky | Education | 2016 |
| Elkku Koti Oy | Real estate | 2023 |
| Elkku Oy | Construction | 2017 |
| Elovo Consulting Oy | Professional & scientific | 2019 |
| Eltion Oy | Professional & scientific | 2017 |
| Eläinklinikka Takala Oy | Professional & scientific | 2013 |
| Etelä-Pohjanmaan Kauppakiinteistöt Oy | Real estate | 2018 |
| Etelä-Pohjanmaan Traktorimuseo Oy | Arts & recreation | 2012 |
| Etelä-Rinteen Riekku Oy | Real estate | 2007 |
| Finnmilk Oy | Agriculture & fishing | 2013 |
| Freedpoint Oy | Construction | 2023 |
| HM Leppäniemi Oy | Financial services | 2024 |
| HS Muuraus ja Laatoitus Oy | Construction | 2013 |
| Hakaradio Oy | Wholesale & retail | 1977 |
| Hakola Group Oy | Financial services | 2010 |
| Hallasuo Service Oy | Information & communication | 2019 |
| Han Moo Do Oy | Education | 1989 |
| Hanneswork Ky | Construction | 2016 |
| Havström Oy | Professional & scientific | 2024 |
| Haymana Avoin yhtiö | Hospitality | 2015 |
| Hehku Group Oy | Arts & recreation | 2025 |
| Hemmingway Oy | Agriculture & fishing | 2025 |
| Hites Oy | Wholesale & retail | 1995 |
| Honkamaantila Oy | Agriculture & fishing | 2021 |
| Hudson Business Consulting Oy | Professional & scientific | 2023 |
| Huoltoasema L Pihlajamäki Oy | Financial services | 1999 |
| Ilo, valo & kuva Oy | Arts & recreation | 2013 |
| J. Martikkala Ky | Transport & logistics | 2011 |
| J.R.J Rajala Oy | Agriculture & fishing | 2022 |
| Jaskarinkylän Maanrakennus Ky | Construction | 2011 |
| JK Nosto Oy | Construction | 2024 |
| JM Ambition Oy | Construction | 2016 |
| JM House Oy | Construction | 2017 |
| JNA-Myynti Ky | Manufacturing | 1990 |
| JNA-Sijoitus Oy | Real estate | 2007 |
| JP-Teräs Oy | Manufacturing | 2011 |
| JR Kone ja Sähkö Oy | Construction | 2020 |
| JV Foods Oy | Wholesale & retail | 2025 |
| Jalosiirto Oy | Construction | 2020 |
| Jalostamo Oy | Arts & recreation | 2009 |
| Jaskarin Rengas ja Kone Ky | Wholesale & retail | 2017 |
| Joava Oy | Professional & scientific | 2023 |
| Jujusjoki Oy | Wholesale & retail | 2011 |
| JymyVolley Oy | Arts & recreation | 2019 |
| Jääskän Loma Oy | Hospitality | 2025 |
| Kone Ja-Ke OY | Construction | 2012 |
| Kaihon Kaivajat Oy | Mining & quarrying | 2026 |
| Kalistaja Oy | Agriculture & fishing | 2024 |
| Kalvesmäen Rakenne Oy | Construction | 2024 |
| Kestack Oy | Construction | 2008 |
| Kiinteistö Oy Keski-Nurmontie 206 | Real estate | 1994 |
| Kiinteistö Oy Seinäjoen Vuokonollila 1 | Real estate | 2020 |
| Kiinteistö Oy Utsunlenkki | Hospitality | 2006 |
| Kiinteistöosakeyhtiö Seinäjoen Ryssy | Real estate | 2016 |
| Kisakone Oy | Wholesale & retail | 2024 |
| Knuuttilan Tila Oy | Agriculture & fishing | 2021 |
| Kolmikone Ky | Wholesale & retail | 1992 |
| KonePakka Oy | Other services | 2022 |
| Koneurakointi J. Makkonen Oy | Construction | 2023 |
| Korpimetso.com Oy | Other services | 2016 |
| Kuljetus A. Korpi Oy | Transport & logistics | 2014 |
| Kuljetus Antti Myllymäki Oy | Transport & logistics | 2005 |
| Kuljetus Järvistö Oy | Other services | 2005 |
| Kuljetus Piikkilä Oy | Transport & logistics | 1993 |