| M & V Koposet Oy Kuljetusliike CVR 0821201-6 | OtherAudit | 1997 – 2023 | — | Active |
| Maalaustyöt Kari Kinnunen Oy CVR 0822314-5 | OtherAudit | 1997 – 2025 | — | Active |
| Kattotutka Oy CVR 0904784-1 | OtherDeputy auditor | 2000 – 2025 | — | Active |
| Juha Tahvanainen Oy CVR 0906739-1 | OtherAudit | 2000 – 2020 | — | Active |
| FinTwin Oy CVR 0997097-8 | OtherAudit | 2006 – 2019 | — | Active |
| Rovaniemen Mountain Bike Center Oy CVR 1002615-9 | OtherAudit | 1998 – 2023 | — | Active |
| Rovaniemen Kaikkoset Oy CVR 1066087-0 | OtherAudit | 2012 – 2024 | — | Active |
| Kiinteistö Oy Rovaniemen Alakorkalontie 4 CVR 1452478-8 | OtherAudit | 2009 – 2024 | — | Active |
| Arkkitehtisuunnittelu Hiilivirta Oy CVR 1625181-6 | OtherDeputy auditor | 2000 – 2020 | — | Active |
| Kiinteistöhuolto ja maanrakennus Martin Oy CVR 1625244-8 | OtherAudit | 2000 – 2022 | — | Active |
| Marttiini Metal Oy CVR 1702502-8 | BoardChairperson | 2019 – 2019 | — | Dissolved |
| Lapin Kumi Oy CVR 1945691-3 | OtherAudit | 2006 – 2021 | — | Dissolved |
| Lapin Rengastalo Oy CVR 1945692-1 | OtherAudit | 2006 – 2021 | — | Active |
| Helle-Kangas Consulting Oy CVR 2015472-8 | OtherAudit | 2006 – 2025 | — | Active |
| Kilpislomat Oy CVR 2072101-6 | OtherAudit | 2006 – 2025 | — | Active |
| Arctic Testing Services Oy CVR 2121305-6 | OtherAudit | 2007 – 2021 | — | Active |
| Kiinteistö Oy Opistorivi CVR 2407644-8 | OtherAudit | 2017 – 2020 | — | Active |
| Oulun Rengastalo Oy CVR 2614323-7 | OtherAudit | 2014 – 2021 | — | Active |
| Kiinteistö Oy Rovaniemen Rengastalo CVR 2732291-5 | OtherAudit | 2016 – 2021 | — | Active |
| Kiinteistö Oy Rovaniemen Ratavartijankatu 2 CVR 2867917-4 | BoardBoard of Directors | 2019 – 2021 | — | Active |