| ABB Industrial Solutions (Finland) Oy CVR 0108346-9 | OtherAudit | 2013 – 2023 | — | Opløst |
| Widenius, Sederholm & Someri Oy Ab CVR 0115154-8 | BoardBoard of Directors | 2021 – 2024 | — | Aktiv |
| Kiinteistö Oy Teollisuuskatu 29 CVR 0122577-0 | OtherAudit | 2012 – 2021 | — | Aktiv |
| Heras Finland High Security Oy CVR 0124523-7 | OtherAudit | 2011 – 2022 | — | Aktiv |
| Uponor Oyj CVR 0148731-6 | OtherAudit | 2020 – 2023 | — | Aktiv |
| Beamex Oy Ab CVR 0181602-8 | OtherAudit | 2015 – 2019 | — | Aktiv |
| Hogg Robinson Nordic Oy CVR 0203586-4 | OtherAudit | 2019 – 2023 | — | Opløst |
| Sarlin LT Oy Ab CVR 0213783-6 | OtherAudit | 2010 – 2019 | — | Opløst |
| GBT Finland Oy CVR 0215207-5 | OtherAudit | 2017 – 2023 | — | Aktiv |
| Sarlin Oy Ab CVR 0612683-5 | OtherAudit | 2009 – 2019 | — | Aktiv |
| Aktia Fondbolag Ab CVR 0672513-3 | OtherDeputy auditor | 2018 – 2021 | — | Opløst |
| ABB Oy CVR 0763403-0 | OtherAudit | 2018 – 2023 | — | Aktiv |
| Ahlstrom Tampere Oy CVR 0775479-6 | OtherAudit | 2017 – 2023 | — | Aktiv |
| Kiinteistö Oy Lahti Puustellintie 3 CVR 0777643-4 | OtherAudit | 2012 – 2021 | — | Aktiv |
| GE Energy (Finland) Oy CVR 0795168-5 | OtherAudit | 2012 – 2021 | — | Aktiv |
| Bisnode D&B Finland Oy CVR 0830215-0 | OtherAudit | 2021 – 2023 | — | Aktiv |
| Kumpuniemen Voima Oy CVR 0835979-8 | OtherDeputy auditor | 2012 – 2020 | — | Aktiv |
| Jita Oy CVR 0836999-6 | OtherAudit | 2020 – 2023 | — | Aktiv |
| Ahlstrom Glassfibre Oy CVR 0852867-8 | OtherAudit | 2017 – 2023 | — | Aktiv |
| Open Text Oy CVR 0859912-6 | OtherAudit | 2021 – 2023 | — | Aktiv |
| Infrapalvelu Sukellus-Kotka Oy CVR 0913735-3 | OtherAudit | 2020 – 2023 | — | Aktiv |
| Arabelle Solutions Finland Oy CVR 1022750-8 | OtherAudit | 2015 – 2022 | — | Aktiv |
| Oy Wideri Ab CVR 1090942-9 | BoardBoard of Directors | 2021 – 2024 | — | Aktiv |
| Korn/Ferry International Oy CVR 1108900-4 | OtherAudit | 2009 – 2023 | — | Aktiv |
| Uponor Suomi Oy CVR 1541726-3 | OtherAudit | 2020 – 2023 | — | Aktiv |
| Grid Solutions Oy CVR 1558237-3 | OtherAudit | 2015 – 2021 | — | Aktiv |
| Open Text Oy CVR 1564633-0 | OtherAudit | 2005 – 2023 | — | Opløst |
| nLIGHT Oy CVR 1570608-1 | OtherAudit | 2012 – 2023 | — | Aktiv |
| Oy GE Healthcare Bio-Sciences Ab CVR 1629074-3 | OtherAudit | 2012 – 2022 | — | Aktiv |
| GE Embedded Electronics Oy CVR 1635979-8 | OtherAudit | 2014 – 2021 | — | Aktiv |
| Makita Oy CVR 1651936-8 | OtherAudit | 2018 – 2023 | — | Aktiv |
| Kiinteistö Oy Tuusulan Pakkasraitti 12 CVR 1721102-3 | OtherAudit | 2020 – 2023 | — | Opløst |
| KPMG Oy Ab CVR 1805485-9 | BoardBoard of Directors | 2017 – 2022 | — | Aktiv |
| Valtra Oy Ab CVR 1868602-0 | OtherAudit | 2022 – 2023 | — | Aktiv |
| GE Healthcare Finland Oy CVR 1897064-6 | OtherAudit | 2012 – 2021 | — | Aktiv |
| GE Healthcare Oy CVR 1897088-1 | OtherAudit | 2012 – 2021 | — | Aktiv |
| General Medical Finland Oy CVR 1897093-7 | OtherAudit | 2012 – 2023 | — | Aktiv |
| Dun & Bradstreet Marketing Oy CVR 1966768-1 | OtherAudit | 2021 – 2023 | — | Aktiv |
| Dun & Bradstreet Finland Oy CVR 2014838-7 | OtherAudit | 2021 – 2023 | — | Aktiv |
| O.V. Lahtinen Oy CVR 2155907-3 | OtherAudit | 2013 – 2019 | — | Aktiv |
| CBRE Finland Oy CVR 2197069-8 | OtherAudit | 2008 – 2023 | — | Aktiv |
| Sarlin Group Oy Ab CVR 2352221-5 | OtherAudit | 2010 – 2019 | — | Aktiv |
| AGCO Suomi Oy CVR 2395797-2 | OtherAudit | 2022 – 2023 | — | Aktiv |
| Ahlstrom Oyj CVR 2480661-5 | OtherAudit | 2017 – 2023 | — | Opløst |
| Uponor Infra Oy CVR 2500176-3 | OtherAudit | 2020 – 2023 | — | Aktiv |
| Wolt Oy CVR 2646674-9 | OtherAudit | 2022 – 2023 | — | Aktiv |
| ABB Technology Oy CVR 2669319-1 | OtherAudit | 2018 – 2023 | — | Opløst |
| CBRE GWS Finland Oy CVR 2675614-8 | OtherAudit | 2017 – 2023 | — | Aktiv |
| Phyn Oy CVR 2768362-2 | OtherAudit | 2020 – 2023 | — | Aktiv |
| Hitachi Energy Finland Oy CVR 2996683-7 | OtherAudit | 2019 – 2020 | — | Aktiv |
| Lime Technology Oy CVR 2998358-1 | OtherAudit | 2022 – 2023 | — | Aktiv |
| MARICI Finland Oy CVR 3097284-7 | OtherAudit | 2019 – 2021 | — | Aktiv |
| Ahlstrom Holding 2 Oy CVR 3156761-6 | OtherAudit | 2021 – 2023 | — | Opløst |
| Ahlstrom Oyj CVR 3156762-4 | OtherAudit | 2021 – 2023 | — | Aktiv |
| Ahlstrom Holding 1 Oy CVR 3156765-9 | OtherAudit | 2021 – 2023 | — | Opløst |
| Accelleron Nordics Oy CVR 3225654-5 | OtherAudit | 2021 – 2023 | — | Aktiv |
