| 73 Invest Oy | Professional & scientific | 2019 |
| A-bet Oy | Construction | 2020 |
| AIKA Versum Oy | Construction | 2023 |
| APK-Yhtiöt Oy | Other services | 2025 |
| Akreta Oy | Financial services | 2025 |
| Alteritas Oy | Education | 2024 |
| Ankkurilahden Ratsutila Oy | Education | 2012 |
| Apuluuta Oy | Administrative & support | 2023 |
| Arkesi Oy | Other services | 2024 |
| Arktinen Koivu Oy | Agriculture & fishing | 2026 |
| Asap Invest Oy | Real estate | 2012 |
| B outdoors Oy | Agriculture & fishing | 2024 |
| Cruel investment Oy | Real estate | 2021 |
| ENP Group Oy | Construction | 2019 |
| ENP Power Oy | Construction | 2019 |
| EPMT Neuvontapalvelut Oy | Professional & scientific | 2024 |
| Efficient Network Partner Oy | Construction | 2014 |
| Eskola Freetime Ky | Wholesale & retail | 1994 |
| Eveliam Oy | Wholesale & retail | 2025 |
| Fenno Vector Oy | Manufacturing | 2020 |
| Fimentos Oy | Professional & scientific | 2023 |
| Finestic Oy | Administrative & support | 2022 |
| Fitnest Oy | Wholesale & retail | 2020 |
| Funel Oy | Construction | 2022 |
| Fysio-Akuutti Oy | Health & social care | 2021 |
| GS Diamond Oy | Real estate | 2016 |
| Gasrak Oy | Other services | 2024 |
| Golden Sas Oy | Financial services | 2013 |
| Grouta Oy | Construction | 2023 |
| HTCC Oulu Oy | Professional & scientific | 2022 |
| Hallimaa Oy | Construction | 2024 |
| Hammaslilja Oy | Health & social care | 2014 |
| Hespen Oy | Construction | 2025 |
| Hile Insights Oy | Professional & scientific | 2025 |
| Huonekalujen Entisöintikeskus Nissilät Ky | Manufacturing | 1992 |
| Huvikummun luonto- ja koirapalvelut Oy | Professional & scientific | 2018 |
| Iloco OY | Education | 2012 |
| JMC Teräspalvelu Oy | Wholesale & retail | 2000 |
| JS-Asunnot Oy | Construction | 2025 |
| Jadeks Oy | Other services | 2019 |
| Jaitec Group Oy | Financial services | 2026 |
| Jaitec Oy | Construction | 2012 |
| Jokilammen Vesiosuuskunta | Water & waste | 1989 |
| Jussin Sidequest Oy | Professional & scientific | 2025 |
| KJM Capital Oy | Real estate | 2020 |
| Katajaranta Oy | Wholesale & retail | 2008 |
| Kiertorata Invest Oy | Financial services | 2024 |
| Kiinteistö Oy Autoheikki | Transport & logistics | 1989 |
| Kiinteistö Oy Kauniskammit | Hospitality | 2021 |
| Kiinteistö Oy Knuutilankankaan Liiketalo | Real estate | 2003 |
| Kiinteistö Oy Oulun Eteläkeskus | Real estate | 2008 |
| Kiinteistö Oy Oulun Visiolinja 26 | Real estate | 2023 |
| Kiinteistö Oy Savitaipaleen Kievarintien Hoivakoti | Real estate | 2019 |
| Kiinteistö Oy Tupoksen Luutatehdas | Real estate | 2013 |
| Kiinteistö Oy Ylivieskan Arvokiinteistö | Real estate | 2013 |
| Kiinteistöosakeyhtiö Tupaksen Portti | Real estate | 2018 |
| Koneurakointi A. Laukkanen Oy | Construction | 2022 |
| Kotoko Oy | Real estate | 2024 |
| Kouru Keijo Oy | Construction | 2026 |
| Koy Southgate | Real estate | 2023 |
| Kuljetusliike Saraniemi Ky | Transport & logistics | 1994 |
| Kullankankaan Turvapalvelut Oy | Administrative & support | 2007 |
| LSAhonen Oy | Financial services | 2022 |
| Lakeus-Kodit Oy | Construction | 2017 |
| Lehto Energia Oy | Construction | 2023 |
| Lehto Group Oyj | Real estate | 2008 |
| Livea Oy | Real estate | 2019 |
| Lodenkangas Oy | Energy | 2026 |
| Lumpio Oy | Financial services | 2013 |
| Lund Invest Oy | Manufacturing | 2019 |
| Luonto-Mutaset Oy | Professional & scientific | 2023 |
| Luxus-Saunat Oy | Construction | 2016 |
| MJR Rakennuspalvelut Oy | Construction | 2021 |
| MP Rebuild Oy | Construction | 2007 |
| MaTekPro Oy | Construction | 2024 |
| Maalitek Oy | Construction | 2020 |
| Maarakennus Puhakka Oy | Construction | 2007 |
| MakeMark Oy | Administrative & support | 2025 |
| Markkinointitoimisto Elva Oy | Professional & scientific | 2022 |
| Matsor Oy | Information & communication | 2022 |
| Motorhandel Oy | Wholesale & retail | 2024 |
| Musiikki- ja Psykoterapiapalvelut Kari Syvänen Oy | Health & social care | 2006 |
| NGM Group Oy | Professional & scientific | 2026 |
| Neuvotom Oy | Professional & scientific | 2021 |
| Nikato Oy | Real estate | 2024 |
| OJS Capital Oy | Financial services | 2021 |
| Ofisan Oy | Wholesale & retail | 2007 |
| Optoelemec Oy | Manufacturing | 2026 |
| Oulun Kuivauspalvelu Oy | Construction | 2019 |
| P.A Taksi Oy | Transport & logistics | 2015 |
| PETO Holding Oy | Real estate | 2016 |
| PEX Consulting Oy | Professional & scientific | 2008 |
| PKK Houlding Oy | Administrative & support | 2018 |
| PS-Pinnoitus Group Oy | Water & waste | 2022 |
| PS-Pinnoitus Oy | Construction | 2014 |
| PS-Talot Oy | Construction | 2017 |
| Paikallis-Betoni Oy | Manufacturing | 1992 |
| Paljob Oy | Financial services | 2022 |
| Penan Raudoitus Oy | Real estate | 1996 |
| Pentinpuro Invest Oy | Financial services | 2026 |