| A-ura Ky | Professional & scientific | 2019 |
| Aapa Ky | Construction | 1990 |
| Algorab Investments Oy | Real estate | 2021 |
| Andersberg Gård Oy Ab | Agriculture & fishing | 2005 |
| Aprox Oy | Administrative & support | 2025 |
| Auvo Kuisma Oy | Hospitality | 1989 |
| Beteck OY | Construction | 2021 |
| Ball Beverage Packaging Mäntsälä Oy | Manufacturing | 2002 |
| Bendyl Oy | Manufacturing | 2019 |
| Betelgeuse Investments Oy | Financial services | 2020 |
| CallBoy Enterprices Ltd Oy | Transport & logistics | 2022 |
| Carina Räihä Oy | Arts & recreation | 1995 |
| Carrot Ventures Oy | Manufacturing | 2018 |
| ER Blade Oy | Administrative & support | 2025 |
| ERS-Rakennus Oy | Real estate | 1996 |
| Eetun Kuljetus Oy | Transport & logistics | 2008 |
| Eleeni Oy | Professional & scientific | 2025 |
| Enerpro Oy | Professional & scientific | 2004 |
| Eriksdahl Oy | Professional & scientific | 2008 |
| Euroraivaus Oy | Construction | 1992 |
| Evolve Build Oy | Construction | 2023 |
| Flyweight Development Oy | Information & communication | 2020 |
| Haiterma Oy | Transport & logistics | 2004 |
| Helankari Oy | Real estate | 2020 |
| Hovikeskus Oy | Manufacturing | 2011 |
| IGW Evenet Oy | Wholesale & retail | 2016 |
| Ilvosten Työpalvelut Oy | Construction | 2002 |
| Infinitude Holdings Oy | Financial services | 2021 |
| J & K Terveyspalvelut Oy | Health & social care | 2009 |
| JAP Digital Oy | Information & communication | 2006 |
| JH Aaltonen Transport Oy | Transport & logistics | 1993 |
| JHL Group Oy | Professional & scientific | 2023 |
| JO-Sähkö Oy | Construction | 2011 |
| JV LVI-Asennus Oy | Construction | 1995 |
| Jarmon Metalli Oy | Real estate | 2001 |
| K-Niemet Oy | Administrative & support | 2012 |
| Kairos Lastensuojelupalvelut Oy | Health & social care | 2008 |
| Karimäen Metalli Ky | Manufacturing | 1998 |
| KaskiAdventures Oy | Administrative & support | 2020 |
| Kehittyvä Koti Oy | Real estate | 2019 |
| Kevecom Oy | Professional & scientific | 2000 |
| KiVa-talli Oy | Education | 2016 |
| Kiinteistö Oy Haarajoen Väinölä | Real estate | 1992 |
| Kiinteistö Oy Höljärit | Real estate | 1989 |
| Kiinteistö Oy Kaarinin kulma | Real estate | 2011 |
| Kiinteistö Oy Mäntsälän Sivutie 4 | Real estate | 1989 |
| Kiinteistö Oy Terholantie 4 | Real estate | 1985 |
| Kiinteistö-Kanerva Oy | Real estate | 2015 |
| Kinome Oy | Wholesale & retail | 1994 |
| Kirkuktien Puutarha Oy | Wholesale & retail | 2023 |
| Kodinkonehuolto Jo-Mi Oy | Wholesale & retail | 1999 |
| Koirakartano Casa De Perros Ky | Other services | 2012 |
| Konehuolto Koski Oy | Other services | 2020 |
| Konekuusi Oy | Construction | 2008 |
| Koneurakointi Teräväinen Oy | Construction | 2007 |
| Kosken Auto-Pelti avoin yhtiö | Wholesale & retail | 1995 |
| Kressu Oy | Manufacturing | 2019 |
| Kuljetus Henri Eho Oy | Transport & logistics | 2019 |
| Kuljetusliike AE Lilja Ky | Transport & logistics | 1983 |
| LEHITEC Oy | Wholesale & retail | 2018 |
| LVI-Saga Oy | Construction | 2019 |
| Lahia avoin yhtiö | Wholesale & retail | 2022 |
| Lakla Invest Oy | Financial services | 2018 |
| Lemmikkihotelli Tassu & Tassu Oy | Agriculture & fishing | 2005 |
| MEK Kaivuu Oy | Construction | 2008 |
| MH-Trukkipalvelut Oy | Transport & logistics | 2006 |
| MV-koti ja Siivouspalvelut Oy | Construction | 2022 |
| Maalivahti Oy | Construction | 1998 |
| Maanrakennus Huhtala Oy | Construction | 2008 |
| Maarakennus Mustola Oy | Administrative & support | 2004 |
| Maisematukku Oy | Agriculture & fishing | 2020 |
| Maxei Finland Oy | Construction | 1993 |
| NKR-Palvelut Oy | Professional & scientific | 2025 |
| Northern Pike Safaris OY | Administrative & support | 2017 |
| Nummisten Hevospalvelut Oy | Wholesale & retail | 2014 |
| Nummisten Kotiapu Oy | Health & social care | 2021 |
| Nummisten Kylänmäki Oy | Real estate | 2021 |
| Nummisten metsä oy | Other services | 2025 |
| Oy Tero Vanhanen Ltd | Professional & scientific | 2018 |
| Oy Trade Aid Ltd | Transport & logistics | 1984 |
| Paperikuutio Oy | Water & waste | 2011 |
| Pasi Merisalo Oy | Wholesale & retail | 1997 |
| Pikkuwille J&J oy | Other services | 2015 |
| Pilkemotti Oy | Agriculture & fishing | 2022 |
| Pohjolan Ykkösraivaus Oy | Construction | 1992 |
| Poly-Pro Oy | Professional & scientific | 1998 |
| Popin Peltityö Oy | Construction | 2005 |
| Psykoterapiakeskus MieliHyvä Oy | Health & social care | 2002 |
| Puhelinviihde Oy | Information & communication | 2021 |
| Puirava Oy | Hospitality | 2006 |
| Pääkaupunkiseudun Barservice Oy | Manufacturing | 2003 |
| Rakennus Marjomaa Oy | Construction | 2007 |
| Rakennus Pikka Oy | Construction | 1997 |
| Rakennus- ja Maalauspalvelu Unelmakoti Oy | Construction | 2008 |
| Rakennus-Eleko Oy | Construction | 1994 |
| Rakennusliike J&T Oy | Construction | 2014 |
| Rakennustyö Taito Peltonen Oy (RTP Oy) | Construction | 2017 |
| Rakra Oy | Construction | 1987 |
| Remenes Oy | Other services | 2016 |
| Renomentti Oy | Construction | 2015 |