| AP HavuKate Oy | Construction | 2014 |
| AegisNet Oy | Manufacturing | 2025 |
| Aktarian Oy | Arts & recreation | 2010 |
| Asunnot ja kiinteistöt Kesäranta Oy | Real estate | 2025 |
| Auto-Target Ky | Wholesale & retail | 1995 |
| Bellurum Oy | Real estate | 2018 |
| Borealis research & supply Oy | Transport & logistics | 2026 |
| Carpe Invest Oy | Real estate | 2017 |
| Deep Stop Oy | Education | 2012 |
| Duendecor Oy | Professional & scientific | 2023 |
| ETL Facility Oy | Administrative & support | 2015 |
| Etelä-Karjalan Eläintuhkaamo Oy | Other services | 2023 |
| Etelä-Suomen Laatutrailerit avoin yhtiö | Wholesale & retail | 2013 |
| Fin Futures Trading Oy | Financial services | 2026 |
| Grinnval Oy | Wholesale & retail | 2003 |
| H & S Vitikainen Avoin yhtiö | Agriculture & fishing | 2009 |
| HCProjekti Oy | Construction | 2021 |
| Hemi Records Oy | Professional & scientific | 2002 |
| Hirvoa Invest Oy | Real estate | 2023 |
| Hobbly Technologies Oy | Information & communication | 2025 |
| Ihmeellinen Isäntä Oy | Arts & recreation | 2018 |
| Ir & SPIKA Oy | Wholesale & retail | 2009 |
| J & T Kaijansinkko Ky | Construction | 1998 |
| J Pro Service Oy | Manufacturing | 2020 |
| JM Moottorihuolto Oy | Other services | 1999 |
| KOLMIO GROUP Oy | Professional & scientific | 2013 |
| KOY Taipalsaaren Asunnot | Real estate | 2012 |
| Karjalan Kanava Oy | Construction | 2018 |
| Karjalan Kauppahuone Ky | Hospitality | 2006 |
| Karjalan Lomahovi Oy | Hospitality | 2020 |
| Kiinteistö OY Riihikallionkuja 14 | Real estate | 2011 |
| Kiinteistö Oy Suur-Saimaa | Real estate | 2018 |
| Kingsepät Oy | Construction | 2008 |
| Koneurakointi Valtonen Ky | Mining & quarrying | 2013 |
| Kover Oy | Professional & scientific | 2022 |
| Kuljetus Mauri Hulkkonen Oy | Transport & logistics | 2001 |
| Kuljetus Vilho Hulkkonen Oy | Transport & logistics | 2001 |
| LMP Vesterinen Oy | Construction | 2021 |
| LT Tili Oy | Professional & scientific | 1989 |
| Lappeenrannan Musiikki Ky | Wholesale & retail | 1986 |
| LasHar Oy | Professional & scientific | 2023 |
| Liiku 88 Oy | Arts & recreation | 1988 |
| Litti Oy | Administrative & support | 2020 |
| Livasti Oy | Education | 2020 |
| Luontaiselo Oy | Wholesale & retail | 2025 |
| ME-talli Oy | Professional & scientific | 2020 |
| Matti Suninen Oy | Wholesale & retail | 2000 |
| Maury & c:o Oy | Manufacturing | 2023 |
| Mediatalo Toimelias Oy | Professional & scientific | 2011 |
| Metallityö Taipal-ovi Oy | Manufacturing | 1984 |
| Mutex Oy | Information & communication | 2007 |
| NN-House Oy | Professional & scientific | 2018 |
| NSL-Nostolaite Oy | Wholesale & retail | 1997 |
| OL Suunnittelu Oy | Professional & scientific | 2012 |
| Ocean Spring Oy | Professional & scientific | 2021 |
| Ohmikertaakäämi Oy | Construction | 2021 |
| Osuuskunta Kurenniemen Talo | Agriculture & fishing | 1988 |
| Oy J Jauhiainen Logistics Ltd | Professional & scientific | 2005 |
| Oy Vire-Vox Ab Ltd | Education | 1994 |
| Peda-Palvelu Ky | Professional & scientific | 1992 |
| Peltisepänliike Hietamies Oy | Construction | 2010 |
| Piritan koti ja tili Oy | Professional & scientific | 2024 |
| Pitamus Forwarding Oy | Transport & logistics | 2011 |
| ProTaipal Oy | Hospitality | 2022 |
| Progressive Investment Ltd Oy | Wholesale & retail | 1995 |
| Prosignor Oy | Professional & scientific | 2021 |
| Puumarin Oy | Manufacturing | 1987 |
| Puusepänliike R. ja K. Pakkanen | Manufacturing | 1978 |
| Puutyö Ahokainen Avoin yhtiö | Construction | 2022 |
| Pölkky Baari Oy | Hospitality | 2010 |
| Ratsastusterapia Mäkelä Avoin yhtiö | Arts & recreation | 2008 |
| Remika Autohuolto korjaamo Oy | Other services | 2024 |
| RetkiSaimaa Oy | Administrative & support | 2020 |
| Räiskin Kone Oy | Wholesale & retail | 2002 |
| SSW-Infra Oy | Construction | 2013 |
| Saaren Lomamökit Oy | Hospitality | 1994 |
| Saarilandia Oy | Hospitality | 2005 |
| Saimaan Hallintopalvelut Oy | Administrative & support | 2011 |
| Saimaan Juhlavuokraus Oy | Administrative & support | 2025 |
| Saimaan Kuitu Oy | Construction | 2015 |
| Saimaan Lomahovi Oy | Hospitality | 2026 |
| Saimaanharjun Teollisuuskiinteistö Oy | Real estate | 1986 |
| Sipoon Arvokiinteistöt Oy | Real estate | 2008 |
| Sofrena Oy | Construction | 2010 |
| SoliMa Oy | Construction | 2008 |
| Soneval Oy | Construction | 1993 |
| Suur-Saimaa Strand Resort Oy | Hospitality | 2019 |
| Sydänmaan Terveys Oy | Wholesale & retail | 2023 |
| Sähkötoimisto Tiainen Oy | Construction | 2022 |
| TN Technologies Oy | Manufacturing | 2025 |
| Taipalsaaren Lämpö Oy | Energy | 2015 |
| Taipalsaaren Puunkuivaamo Oy | Wholesale & retail | 2001 |
| Taipalsaaren Rakennus ja Eristys Ky | Construction | 1989 |
| Taksibussit Hongisto Ky | Transport & logistics | 1997 |
| Teacrete Oy | Real estate | 2020 |
| Teline Leka Oy | Administrative & support | 2025 |
| Terassimaailma Oy | Construction | 2020 |
| Tikkapuu Oy | Professional & scientific | 2020 |
| Tilintarkastus Paakkunainen Oy | Professional & scientific | 2007 |
| VTK Valvontapalvelu Oy | Real estate | 2014 |