| Aate clothing Oy | Manufacturing | 2026 |
| Affletor Oy | Hospitality | 2017 |
| Ajatusvirta Oy | Professional & scientific | 1998 |
| Almar Oy | Professional & scientific | 1989 |
| EB Management Oy | Professional & scientific | 2024 |
| Elokuvayhtiö Common Sense Finland Oy | Information & communication | 2005 |
| Finspired Partners Oy | Professional & scientific | 2015 |
| Fouri Oy | Arts & recreation | 2008 |
| Hummeldal Invest Oy | Financial services | 2016 |
| Innovoimala Oy | Professional & scientific | 2005 |
| IntegrityNetwork Oy | Arts & recreation | 2023 |
| Kalaveikot Oy | Agriculture & fishing | 1963 |
| Kiinteistö Oy Mathildedals Verkstäder Mathildedalin Ruukkitehtaat | Real estate | 2000 |
| Kiinteistö Oy Matildan Koneisto | Real estate | 2019 |
| Kiinteistö Oy Matildan Tammi | Real estate | 2004 |
| Lead4Growth Oy | Professional & scientific | 2016 |
| Lohtu Oy | Education | 2023 |
| Mathildedalin Kyläleipuri Oy | Manufacturing | 2014 |
| Mathildedalin Panimo Oy | Manufacturing | 2013 |
| Matildan Kievari Oy | Hospitality | 2023 |
| Matri Hospitality Oy | Hospitality | 2022 |
| Mellow Travel Oy | Hospitality | 2021 |
| OTuomi Consulting Oy | Professional & scientific | 2023 |
| OZOclean Oy | Wholesale & retail | 1997 |
| PRT Group Oy | Professional & scientific | 2014 |
| PRT Invest Oy | Financial services | 2014 |
| PSH Consulting Ky | Health & social care | 1983 |
| Proimpro Oy | Professional & scientific | 2010 |
| Ruukin kehräämö ja puoti Oy | Manufacturing | 2012 |
| Ruukki Creative Oy | Professional & scientific | 2026 |
| Ruukkimatkailu Oy | Hospitality | 2010 |
| Sanrimet Oy | Hospitality | 2005 |
| Sea U avoin yhtiö | Wholesale & retail | 2018 |
| TL Endurance oy | Education | 2021 |
| Tapiolan Elektroniikka Oy | Information & communication | 1987 |
| Teijon Kiinteistöhuolto Oy | Administrative & support | 2019 |
| Terho Restaurants Oy | Hospitality | 2025 |
| Warung Oy | Arts & recreation | 2016 |