| 28 Solutions Oy | Wholesale & retail | 2024 |
| AO-Maalaus avoin yhtiö | Construction | 1978 |
| Aavaharju oy | Water & waste | 2023 |
| Aidamex Oy | Manufacturing | 2001 |
| Ailet Oy | Construction | 1994 |
| Alha Oy | Agriculture & fishing | 2023 |
| Apukynä Avoin yhtiö | Arts & recreation | 2005 |
| Arranz Group Oy | Wholesale & retail | 2023 |
| Asennus Suomi Oy | Construction | 2017 |
| Auswald Oy | Agriculture & fishing | 2020 |
| Debetto Oy | Administrative & support | 2022 |
| Esan Ikkunakauppa Oy | Construction | 2022 |
| Eurorekry Oy | Administrative & support | 2012 |
| Fridwest Oy | Construction | 2020 |
| Hirsijumala Oy | Construction | 2024 |
| Ilveksen tila Oy | Agriculture & fishing | 2000 |
| Innoforum Oy | Professional & scientific | 2007 |
| Insinööritoimisto Petrell Oy | Professional & scientific | 2024 |
| JS Tilitiimi Oy | Professional & scientific | 2026 |
| Joksan Puu Ky | Manufacturing | 1995 |
| Jola-Metalli Oy | Manufacturing | 1994 |
| KB-Contracting Oy | Construction | 2025 |
| KISTAKSI Oy | Transport & logistics | 2021 |
| KaJaPe Oy | Hospitality | 2016 |
| Kaivinkoneurakointi J Lunki Oy | Construction | 2008 |
| Kiinteistö Oy Kiskon Vuokrakiinteistöt | Real estate | 2019 |
| Kisko Capital Oy | Financial services | 2010 |
| Kisko Consulting Oy | Financial services | 2006 |
| Kisko Investments Oy | Financial services | 2015 |
| Kiskon Kone Oy | Wholesale & retail | 2010 |
| Kiskon Liikenneasema Oy | Wholesale & retail | 2006 |
| Kiskon Mineraali Oy | Mining & quarrying | 2024 |
| Kiskon Sähkötyö Oy | Construction | 2011 |
| Kiskon US-Motor Oy | Wholesale & retail | 1994 |
| Kiskon lämpö Oy | Energy | 2007 |
| Koneurakointi Santasaari OY | Construction | 2025 |
| Korjaus & Kuljetus Hildén Oy | Manufacturing | 2007 |
| Kuljetus N.Rantanen Oy | Transport & logistics | 2020 |
| Landraamo Oy | Other services | 2021 |
| Laurikainen Holdings Oy | Financial services | 2017 |
| Lehtimarkkinointi Niemi Ky | Wholesale & retail | 1991 |
| M S Saloranta Oy | Real estate | 2019 |
| MJus Oy | Professional & scientific | 1980 |
| MS-Putki Ky | Manufacturing | 1991 |
| Metallityö Markku Saloranta Oy | Manufacturing | 2019 |
| Metsäketun Kievari Oy | Hospitality | 2026 |
| Naarjärvi-Kiinteistöt Oy | Real estate | 1989 |
| Niko Lindholm Oy | Construction | 2011 |
| North Atlantic Oy | Information & communication | 2025 |
| Nurmex Oy | Administrative & support | 2025 |
| Nurmijärven Pihalaatta Oy | Real estate | 1987 |
| Option LKV Oy | Real estate | 2025 |
| Orijärven Peltituote Hakanpää & Kni | Manufacturing | 1985 |
| PMJ-Asennus Oy | Construction | 2011 |
| PTF Works Oy | Wholesale & retail | 2021 |
| Perniön JR-Trans Ky | Transport & logistics | 1993 |
| Propelboards Oy | Manufacturing | 2022 |
| Punta Oy | Manufacturing | 1982 |
| Purolan tila Oy | Agriculture & fishing | 2015 |
| Rakennusliike Toivo Ajalin Oy | Construction | 2014 |
| Saarinen & Venhomaa | Transport & logistics | 1994 |
| Salon Parveke- ja Terassilasitus Oy | Construction | 1998 |
| Sampo-Eristys Oy | Construction | 1998 |
| Santasaari Oy | Construction | 2021 |
| Sapala Ky | Arts & recreation | 1990 |
| Sepän tila Oy | Agriculture & fishing | 2009 |
| SiVaVi-Rakentajat Oy | Construction | 2015 |
| Sunrise Solutions Oy | Construction | 2024 |
| Supi-Tuote Kommandiittiyhtiö | Manufacturing | 1978 |
| TPL-Tehopalvelu Ky | Construction | 1999 |
| Talon Elvyttäjät Oy | Construction | 2025 |
| Toijan Autohuolto Oy | Other services | 1988 |
| Toijan Kauppayhtiö, K ja S Leino | Wholesale & retail | 1955 |
| Transport Rantanen Oy | Transport & logistics | 2020 |
| Uptempo Finland Oy | Information & communication | 2018 |
| Urakointi Harri Lehtonen Ky | Construction | 2016 |
| VT Welding Oy | Manufacturing | 2024 |
| Vamos Group Oy | Construction | 2022 |
| Venhomaa Group Oy | Construction | 2023 |
| Vicia Faba Oy | Professional & scientific | 1989 |
| Vilikkaniemi Oy | Hospitality | 2018 |
| Vindauga Oy | Construction | 2017 |
| Vitaplaza Oy | Wholesale & retail | 1992 |
| Vtv - urakointi Oy | Construction | 2010 |
| Vuorilinnan Voima Oy | Financial services | 1998 |
| kuljetus RANLE oy | Transport & logistics | 2018 |