| 1132 Sonja Hallikainen Oy | Wholesale & retail | 2014 |
| A & S Tuononen Oy | Wholesale & retail | 2009 |
| AJ-Lasitus Oy | Construction | 2015 |
| Apajan Metsä OY | Agriculture & fishing | 2010 |
| AT Investment Oy | Real estate | 2025 |
| Akvila Osakeyhtiö | Manufacturing | 1920 |
| Alavan maa Oy | Agriculture & fishing | 2021 |
| Antibox Design Oy | Professional & scientific | 2016 |
| Apno Oy | Construction | 1989 |
| Armoton Audio Ky | Arts & recreation | 2011 |
| Autohuolto K Hovattala Ky | Wholesale & retail | 1992 |
| ColdXray Oy | Professional & scientific | 2024 |
| Dara Pizza Oy | Hospitality | 2025 |
| E&P Vuokra/huolto oy | Manufacturing | 2025 |
| ES Taloushallinto Oy | Professional & scientific | 2013 |
| Eepeen konepalvelu oy | Agriculture & fishing | 2013 |
| Eija Poutiainen Ky | Transport & logistics | 2009 |
| ErgoMode Ky | Manufacturing | 2009 |
| Erkki Räsänen Oy | Professional & scientific | 1981 |
| Eswe Pet Oy | Agriculture & fishing | 2023 |
| Eswecom Ltd Oy | Manufacturing | 1995 |
| Finelcomp Oy | Manufacturing | 2009 |
| Finn Fysiotec Ky | | 1985 |
| FinnAust Mining Finland Oy | Mining & quarrying | 2010 |
| FinnCobalt Oy | Mining & quarrying | 2009 |
| FinnConcept Oy | Professional & scientific | 2010 |
| HH-Nextstep Oy | Real estate | 2013 |
| Hakontra Oy | Financial services | 2017 |
| Harkiten Oy | Professional & scientific | 2021 |
| Helie Oy | Wholesale & retail | 2018 |
| Helin Pizza Oy | Hospitality | 2017 |
| Hiluversumi Oy | Other services | 2022 |
| Huoltoasema P. Sairanen Oy | Wholesale & retail | 2004 |
| Innopelletti oy | Manufacturing | 2022 |
| Insinööritoimisto Ylimys Oy | Professional & scientific | 2020 |
| Invantor Oy | Wholesale & retail | 2016 |
| Isännöinti ja kirjanpito Tilikiha Oy | Professional & scientific | 1992 |
| Itä-Savon Lähienergia Oy | Energy | 2003 |
| Itä-Suomen Automaatio Oy | Manufacturing | 2019 |
| Itä-Suomen Ekoyhtiö Oy | Water & waste | 1994 |
| Itä-Suomen Kotihoito Hymynkare Oy | Health & social care | 2019 |
| Itä-Suomen Metsälannoitus Oy | Agriculture & fishing | 2016 |
| Itä-Suomen Päihdekuntoutus Oy | Health & social care | 2009 |
| Itä-Suomen Traktoripalvelu Ky | Construction | 2002 |
| J&J Louhinta Oy | Mining & quarrying | 2024 |
| JAP-Tuotanto Ky | Construction | 2004 |
| JE-Tech Oy | Manufacturing | 2013 |
| JH-Monityö Oy | Other services | 2023 |
| JR Infra-apu Oy | Construction | 2017 |
| JT-Räsänen Oy | Real estate | 1987 |
| JTagro Oy | Administrative & support | 2014 |
| Joensuun Autosuojaus Ky | Other services | 1984 |
| Joensuun Ykkösrakentajat Oy | Construction | 2010 |
| JokirantaGrain Oy | Agriculture & fishing | 2018 |
| Jokisärkän Tila Oy | Agriculture & fishing | 2025 |
| Joy People Oy | Information & communication | 2021 |
| Juomalja Oy | Hospitality | 2020 |
| Juupex Oy | Other services | 2022 |
| KACHA HoldCo I Oy | Real estate | 2026 |
| KJJ-Urakointi Oy | Construction | 2020 |
| KVH-lnvest Oy | Financial services | 1981 |
| KVM Rakennus Oy | Construction | 2005 |
| Kangaslämpö Oy | Energy | 2010 |
| Karelia-Laser ky | Manufacturing | 1992 |
| Karelnet Oy | Information & communication | 2021 |
| Karjalan Kiinteistöpalvelu Oy | Administrative & support | 1968 |
| Karpow Solutions OY | Professional & scientific | 2022 |
| Karum Oy | Construction | 2021 |
| Kaskiravintolat Oy | Hospitality | 2026 |
| Kelotrans oy | Transport & logistics | 2022 |
| Kiint. Oy Kauhavan Junioriraitti | Real estate | 2017 |
| Kiint.Oy Kauhavan Palveluraitti | Real estate | 2017 |
| Kiint.Oy Kauhavan Pukkilanraitti | Real estate | 2017 |
| Kiinteistö Oy Joensuun Kauppakeidas | Real estate | 2011 |
| Kiinteistö Oy Kummun Kodit | Real estate | 1991 |
| Kiinteistö Oy Outokummun Kiisukatu | Real estate | 2021 |
| Kiinteistö Oy Sinikankaari 1 | Real estate | 2010 |
| Kiinteistöhuolto M ja J Oy | Administrative & support | 2007 |
| Kiinteistönhoito- ja Konetyöt Jukka Kaasinen Oy | Administrative & support | 2019 |
| Kirike Oy | Manufacturing | 1983 |
| Kirkaste Oy | Professional & scientific | 2019 |
| Kivivaara Technologies Oy | Professional & scientific | 2022 |
| Kosulan Kasvattamo Oy | Agriculture & fishing | 2008 |
| Koto Asuntovuokraus Oy | Real estate | 2017 |
| Kuljetus Dimitrow Ky | Transport & logistics | 1994 |
| Kuljetus Esa Kinnunen Ky | Transport & logistics | 1990 |
| Kuljetus Vauhkonen Oy | Transport & logistics | 1996 |
| Kuljetus Warcell Oy | Transport & logistics | 2015 |
| Kuljetusliike Juha Juntunen Oy | Transport & logistics | 2006 |
| Kuljetusliike Kontkanen Oy | Transport & logistics | 1983 |
| Kummun Hammas Oy | Manufacturing | 2014 |
| Kuntoutusyksikkö MiunElämä Oy | Health & social care | 2017 |
| Kuusikkoaho Oy | Real estate | 1994 |
| Kyläkauppa Tuomo Pelkonen Ky | | 1987 |
| Kyykerin Kartano Oy | Hospitality | 2016 |
| Kyykerin Monipalvelu Oy | Construction | 2015 |
| LP-Työpalvelu Oy | Administrative & support | 2016 |
| LVI-Ekborg Oy | Construction | 2017 |
| LVI-asennus Räsänen Oy | Construction | 2004 |
| Lasikumpu Ky | Manufacturing | 1988 |