| 4Steel Oy | Construction | 2020 |
| AJ-Wood Ky | Wholesale & retail | 2013 |
| ARTH Oy | Manufacturing | 2025 |
| Artsicon Ky | Professional & scientific | 2003 |
| Aamuisa Oy | Agriculture & fishing | 2020 |
| Alteams Finland Oy | Manufacturing | 2015 |
| Alteams Oy | Manufacturing | 1962 |
| Apartio Oy | Real estate | 2021 |
| Arnikki Consulting Oy | Information & communication | 2026 |
| Aronkylän Vesihuolto Oy | Water & waste | 1974 |
| Asama-Trading Oy | Professional & scientific | 2000 |
| Aujus Oy | Financial services | 2022 |
| AutomateIT Ab | Information & communication | 2019 |
| Avoin yhtiö Laatusisustus Jaer | Construction | 1994 |
| Butik Sarian Oy | Wholesale & retail | 2020 |
| CR Systems Oy | Manufacturing | 2022 |
| Cadpro Oy | Professional & scientific | 2023 |
| Consserv Oy | Education | 2024 |
| Design Meri Oy | Professional & scientific | 2022 |
| Duhini Ky | Professional & scientific | 2022 |
| EH-Muovi Oy | Manufacturing | 1986 |
| ENS-Holding Oy | Financial services | 2017 |
| Eko-Center Mullo Oy | Transport & logistics | 2010 |
| Ekokauppa Kotona Oy | Wholesale & retail | 2021 |
| Electric Way Finland Oy | Construction | 2024 |
| Ellis House Oy | Real estate | 2020 |
| Ellis Office Oy | Administrative & support | 2023 |
| Esko LKV Oy | Real estate | 2024 |
| FSX International Oy | Arts & recreation | 2016 |
| Fenergy Oy | Wholesale & retail | 2015 |
| Finssi Ky | Health & social care | 2007 |
| Forsailor Oy | Wholesale & retail | 2024 |
| Fourthtuna Oy | Wholesale & retail | 2020 |
| Fysio Hevi Oy | Health & social care | 2025 |
| Fysiopulssi Oy | Health & social care | 2015 |
| GT Green Technology OY | Financial services | 2009 |
| Grillipalvelut S&A Oy | Hospitality | 2025 |
| Grüne Fee Marketing Oy | Wholesale & retail | 1992 |
| H&R Mäkelä Oy LKV | Real estate | 2009 |
| Highfell OY | Real estate | 2009 |
| HR Mäkelä Invest Oy | Professional & scientific | 2011 |
| HS Invest Oy | Financial services | 2003 |
| Hammaslääkäripalvelut Palomäki Oy | Health & social care | 2023 |
| Hautalan Maatila Oy | Agriculture & fishing | 2025 |
| HeEMS Oy | Professional & scientific | 2019 |
| Headstar Oy | Professional & scientific | 2006 |
| Hildr Oy | Financial services | 2024 |
| Hirsisorvaus Samppala avoin yhtiö | Construction | 2017 |
| Ilmajoen Pikaruoka Oy | Hospitality | 2016 |
| InnoRati Oy | Construction | 2011 |
| Insinööritoimisto Hesplan Oy | Professional & scientific | 2021 |
| Isonkyrön Lämpö Oy | Energy | 2006 |
| Isännöinti Kiva Oy | Real estate | 2021 |
| JH Laaturakennus Oy | Construction | 1989 |
| JJ Install Oy | Construction | 2020 |
| JM-Automaatio Oy | Professional & scientific | 1991 |
| JS-Kiinteistöyhtiö Oy | Water & waste | 2021 |
| Jamuto Oy | Information & communication | 2003 |
| Janne Majaniemi Oy | Professional & scientific | 2017 |
| Jemimar Oy | Construction | 1995 |
| JiVe-Talot Oy | Construction | 2002 |
| Josacon Oy | Construction | 2026 |
| Juha Kivelä Ky | Transport & logistics | 1990 |
| Juha Niemelä Oy | Real estate | 2009 |
| K.Verkkosähkötyöt Oy | Construction | 2014 |
| KAI-Group Ky | Information & communication | 1989 |
| KEMJU Capital Oy | Financial services | 2026 |
| KEMSE Capital Oy | Financial services | 2026 |
| KT NewCo1 Oy | Financial services | 2022 |
| KT NewCo2 Oy | Financial services | 2022 |
| KT NewCo3 Oy | Financial services | 2022 |
| KT NewCo4 Oy | Financial services | 2022 |
| Karak Oy | Construction | 2001 |
| Kasit Oy | Construction | 1994 |
| Kausaali Oy | Administrative & support | 2026 |
| Kesäneliö Oy | Construction | 2001 |
| KihaG Group Oy | Administrative & support | 2023 |
| Kiinteistö Oy Aurinkoranta SJ 17 | Real estate | 2010 |
| Kiinteistö Oy Haapalan Hehtaari | Real estate | 2017 |
| Kiinteistö Oy Laihian Kauppakeskus | Real estate | 1999 |
| Kiinteistö Oy Laihian Kauppatie | Real estate | 1984 |
| Kiinteistö Oy Laihian Toripankki | Real estate | 1990 |
| Kiinteistö Oy Laihian Virastokeskus | Real estate | 1982 |
| Kiinteistö Oy Laihian Vuokratalot | Real estate | 1994 |
| Kiinteistö Oy Murronmäki | Real estate | 1986 |
| Kiinteistö Oy Vaasan Kulmakivi | Real estate | 1990 |
| Kiinteistömyntti Oy | Real estate | 1983 |
| Kiinteistöosakeyhtiö M. Hahl Oy | Real estate | 1997 |
| Kiinteistöyhtiö Kirjatoukka Oy | Real estate | 1992 |
| Kipinä Wellness Oy | Arts & recreation | 2016 |
| Kirppari 48 Oy | Wholesale & retail | 2021 |
| Kirsi Liljeqvist Oy | Health & social care | 2013 |
| Kolmostien Halliosake Oy | Real estate | 2024 |
| Konepalvelu Mullo Oy | Transport & logistics | 2022 |
| Koski Trading Oy | Wholesale & retail | 1979 |
| Koski-Trans Oy | Transport & logistics | 1976 |
| Koskinen Invest Oy | Real estate | 2006 |
| Kuivaamoyhtiö Korpi & Knuutti, avoin yhtiö | Agriculture & fishing | 1990 |
| Kujala Capital Oy | Financial services | 2026 |
| Kuljetusliike Matti Kallio Oy | Transport & logistics | 2025 |