| Putki Pekkanen Oy | Construction | 2015 |
| Putki Point Oy | Construction | 2025 |
| Päijät Invest Oy | Real estate | 2020 |
| RT-Notariaatti Oy | Professional & scientific | 1977 |
| Rakennusliike Masi Oy | Construction | 2017 |
| Rakennustoimijat Oy | Construction | 2021 |
| Ratavar Oy | Real estate | 2021 |
| Ravintola Ykköset Oy | Hospitality | 2014 |
| SA Sijoitus Oy | Financial services | 2021 |
| SM-kahvila-konditoriat Oy | Hospitality | 1995 |
| SR-Rakenne Oy | Construction | 2006 |
| Saariyhtymä Ky | Construction | 1993 |
| Sales Lead Oy | Administrative & support | 2020 |
| Saurus Oy | Manufacturing | 1948 |
| Selänne Consulting Oy | Professional & scientific | 2026 |
| Sibris Oy | Health & social care | 2014 |
| Sisä-Suomen Kiinteistöt Oy | Real estate | 2002 |
| Stenstranda Oy | Wholesale & retail | 1996 |
| Strömmer Holdings Oy | Professional & scientific | 2024 |
| Studio Pennala Oy | Wholesale & retail | 2023 |
| Suomen Sukututkimustoimisto Oy | Other services | 1973 |
| Suopa Oy | Administrative & support | 2024 |
| Svanville Oy | Wholesale & retail | 2009 |
| Sähköurakointi Aho Oy | Construction | 2003 |
| Säykin Kiinteistöpalvelu Ky | Administrative & support | 2013 |
| Säykinrinne Oy | Health & social care | 2016 |
| Säynät-Rakenne, avoin yhtiö | Construction | 1987 |
| Säynätsalon Energia Oy | Wholesale & retail | 2014 |
| Säynätsalon Puhallusvilla Oy | Construction | 2002 |
| Säynätsalon Pumppuasennus Oy | Manufacturing | 1983 |
| Säynätsalon Rakennuspalvelu Oy | Construction | 1986 |
| Säynätsatama Oy | Transport & logistics | 1999 |
| TH-asennuspalvelu oy | Water & waste | 2022 |
| Taksi & Tilausliikenne Tuomi Oy | Transport & logistics | 2017 |
| Taksi Kitinprami Oy | Transport & logistics | 2003 |
| Taksipalvelu Tuomi Oy | Transport & logistics | 2024 |
| Tavolo Bianco Oy | Hospitality | 2017 |
| Techniman Oy | Professional & scientific | 1992 |
| Techporter Finland Oy | Wholesale & retail | 2011 |
| TehFin Oy | Hospitality | 2017 |
| Think Capital Oy | Financial services | 2025 |
| Trakai Oy | Real estate | 1991 |
| Työtehdas Oy | Construction | 2022 |
| Ursa Care Oy | Real estate | 2022 |
| VKK terästyö Ky | Professional & scientific | 2008 |
| Vaatetusliike Aaron's Oy | Wholesale & retail | 2020 |
| Valu Group Oy | Information & communication | 2019 |
| Vikiloop Oy | Financial services | 2023 |
| Vuo Consulting Oy | Professional & scientific | 2026 |
| Vuomatuvan lomaosuuskunta | Hospitality | 2010 |
| Väkijuomia ja vaneria Oy | Hospitality | 2025 |
| WISEMINT Oy | Financial services | 2025 |
| Wilm Oy | Professional & scientific | 2019 |
| Ympäristöhuolto Saarikko Oy | Water & waste | 2023 |
| Zera Consulting Oy | Professional & scientific | 1997 |