| A. Holmi Ky | Wholesale & retail | 1983 |
| AP INVEST Oy | Financial services | 2021 |
| Adesse Oy | Professional & scientific | 2000 |
| Aino Koistinaho Oy | Health & social care | 2023 |
| Alapyky Oy | Agriculture & fishing | 2014 |
| Anttia Oy | Construction | 2025 |
| Arkiapu Ruusu Oy | Administrative & support | 2022 |
| CL-House Oy | Real estate | 2019 |
| Conlog Oy | Manufacturing | 2006 |
| Conzmonz Oy | Professional & scientific | 2020 |
| Cool Kide Oy | Manufacturing | 2022 |
| DigiPartnerIT Oy | Information & communication | 2018 |
| Erkki ja Lea Mäkelä Ky | Wholesale & retail | 1989 |
| HJM Servicion OY | Construction | 2000 |
| Habylonia Oy | Professional & scientific | 2022 |
| Hantako Kommandiittiyhtiö | Wholesale & retail | 1992 |
| Herminator Consulting Oy | Professional & scientific | 2019 |
| Hirsitec Oy | Real estate | 2019 |
| Hivota Oy | Administrative & support | 2008 |
| Hoivapalvelu Emmas Oy | Health & social care | 2015 |
| Holmin Taksit Oy | Transport & logistics | 2019 |
| Honkasen Palvelut Oy | Agriculture & fishing | 2022 |
| JN auto- ja konehuolto Oy | Other services | 2025 |
| JPN Design sisustus ja koristevalo Oy | Professional & scientific | 2016 |
| Jolosvest Oy | Real estate | 2015 |
| Juopulin viemäriosuuskunta | Water & waste | 2008 |
| Jupepa Avoin yhtiö | Mining & quarrying | 1996 |
| Jussi Vimpari Oy | Professional & scientific | 2013 |
| Kaatovänkäri Oy | Agriculture & fishing | 2021 |
| Kalle Koistinen Oy | Construction | 1995 |
| Kaskipuu Oy | Manufacturing | 2019 |
| Keihäskoski KY | Wholesale & retail | 2002 |
| Kiinteistö Oy Ylikiimingin Harjutie | Real estate | 1985 |
| Kiviharjun Sora Oy | Construction | 1990 |
| Kone ja korjaamo Tornio Oy | Other services | 2024 |
| Konetyö Vimpari Oy | Construction | 2024 |
| Konsultointi J. Heikkinen Ky | Professional & scientific | 1998 |
| L.Ylimartimo Oy | Other services | 2019 |
| LVI Tapiola Oy | Construction | 2025 |
| Laardi Oy | Professional & scientific | 2023 |
| Lamutec Oy | Real estate | 1981 |
| Livo Wilderness Oy | Hospitality | 2022 |
| Luontolive Oy | Information & communication | 2022 |
| MMT Koneurakointi Oy | Construction | 2019 |
| MT-Forest Oy | Agriculture & fishing | 2010 |
| Mammutti Kiinteistöt Oy | Real estate | 2020 |
| Mammutti Talotehdas Oy | Manufacturing | 2020 |
| Mammuttihirsi Oy | Construction | 2019 |
| Marja Keväjärvi Oy | Other services | 2023 |
| Metsäkoneurakointi Risto Tuohimaa Ky | Agriculture & fishing | 1990 |
| Metsätyö Pa-Ko Avoin yhtiö | Agriculture & fishing | 2000 |
| Niikku Oy | Manufacturing | 2007 |
| Nylander Invest Oy | Financial services | 2017 |
| OnSite Palvelut Oy | Construction | 2018 |
| Osuusalue Kivijärvi | Real estate | 2023 |
| Oulun Kaivuu ja Rakennus Oy | Construction | 2014 |
| P-konsultit Oy | Professional & scientific | 2024 |
| Parturi-Kampaamo-Kemikalio Tiina Mäenkoski Oy | Other services | 1989 |
| Piilometsä Ky | Education | 2014 |
| Pohjois-Suomen Hirsitalokeskus Oy | Construction | 1991 |
| Pohjolan Silppu Oy | Administrative & support | 1993 |
| Pohjolan työkone Oy | Wholesale & retail | 2006 |
| Projektinjohtopalvelu Maaku Oy | Real estate | 2021 |
| Puuhasa Oy | Administrative & support | 2023 |
| Pälsynaho avoin yhtiö | Mining & quarrying | 2013 |
| Ranifix Oy | Transport & logistics | 2020 |
| Rantapyky Oy | Construction | 2016 |
| Ravintola Alakey Oy | Hospitality | 2024 |
| Rekka-Pekka Oy | Transport & logistics | 1995 |
| Riihipyky Oy | Real estate | 2024 |
| SMV Works Oy | Agriculture & fishing | 2022 |
| Sammovisio Oy | Information & communication | 2026 |
| Sortolan Jäätelö oy | Manufacturing | 2010 |
| SunLape Oy | Construction | 2017 |
| Suomen Koneurakointikeskus oy | Administrative & support | 2022 |
| SyncFleet Oy | Administrative & support | 2026 |
| Sähkö-Artpe Oy | Construction | 1986 |
| T. Honkanen Invest Oy | Wholesale & retail | 2023 |
| T. ja E. Valkola Ky | Mining & quarrying | 1990 |
| TOIMIISE Oy | Manufacturing | 2022 |
| TeeSam Oy | Financial services | 2026 |
| Tervaspuu Oy | Administrative & support | 2023 |
| Toivon Kartano Oy | Health & social care | 2000 |
| Tuvio Solutions Oy | Administrative & support | 2025 |
| Veljekset Holtinkoski Oy | Agriculture & fishing | 2018 |
| Veljekset Jokikokko Oy | Transport & logistics | 1991 |
| Veljekset Kainua Oy | Other services | 2015 |
| Velliperän Muta Ky | Construction | 1989 |
| Vesaisen Sähkö ky | Construction | 1984 |
| Viinivaaran vesiosuuskunta | Water & waste | 1980 |
| Vuoristo Partners Oy | Financial services | 2024 |
| Wallenauto1 oy | Wholesale & retail | 2024 |
| Y-Tiimi Oy | Construction | 2005 |
| Yk-Rengas Oy | Wholesale & retail | 2025 |
| Yki HP&B Oy | Energy | 2010 |
| Ykitek Oy | Construction | 2026 |
| Ylikiimingin Huolto Oy | Wholesale & retail | 1961 |
| Ylikiimingin palvelut Oy | Wholesale & retail | 2022 |
| Zafer Demir Ky | Hospitality | 2008 |
| Zero Privacy Oy | Manufacturing | 2021 |