| 1PERSON AS | Hospitality | 2024 |
| Ageco Holding AS | Real estate | 2005 |
| Aim Link AS | Professional & scientific | 2017 |
| Aktivitet AS | Wholesale & retail | 2012 |
| Angeltveit Hus Hytte Og Hageservice AS | Administrative & support | 2022 |
| Art Eiendom Bolig AS | Real estate | 2013 |
| AS Garntangen | Real estate | 1933 |
| Beck Engineering AS | Professional & scientific | 2022 |
| Black Thumb AS | Administrative & support | 2018 |
| Black Thumb Holding AS | | 2021 |
| Bossum Eiendom AS | Real estate | 2006 |
| Braaten Marine AS | Agriculture & fishing | 2015 |
| Brudeli Engineering AS | Professional & scientific | 2021 |
| Brødrene Skogen Fiskehandel AS | Wholesale & retail | 2006 |
| Bygg Og Boligutvikling AS | Construction | 2013 |
| Byggettersyn Holding AS | Real estate | 1998 |
| Byggmester Arne Markus Spanien AS | Construction | 2024 |
| Byggmester Eriksson & Kanalrens AS | Construction | 2011 |
| Byggmester Frank-Jonny Dyrød AS | Construction | 2015 |
| Cecado Holding AS | Real estate | 2016 |
| Ceptor Holding AS | Real estate | 2002 |
| Certina Invest AS | Wholesale & retail | 2019 |
| Ck-Eiendom AS | Real estate | 2015 |
| Cognik AS | Information & communication | 2014 |
| Coolhead Capital AS | Financial services | 2015 |
| D Haugen Holding AS | | 2020 |
| Draxa AS | Wholesale & retail | 2014 |
| Eir Naturals AS | Wholesale & retail | 2025 |
| El-Del AS | Other services | 2025 |
| Eldrive Norge AS | Manufacturing | 1998 |
| Engelsviken Barnehage AS | Education | 2014 |
| Engelsviken Bil AS | Wholesale & retail | 2023 |
| Engelsviken Brygge AS | Real estate | 1995 |
| Engelsviken Eiendom 2 AS | Real estate | 2021 |
| Engelsviken Eiendom AS | Real estate | 1997 |
| Engelsviken Fiskerestaurant AS | Hospitality | 2012 |
| Engelsviken Fryseri AS | Real estate | 2000 |
| Engelsviken Invest AS | Real estate | 2005 |
| Engelsviken Kabel-Tv SA | | 1996 |
| Engelsviken Norway AS | | 2024 |
| Engelsviken Rør AS | | 2010 |
| Engelsviken Slipp AS | Manufacturing | 2004 |
| Engelsviken Snekkerverksted Bygg AS | Real estate | 2026 |
| Engelsviken Torg AS | Real estate | 2024 |
| Engelsviken Treningssenter AS | Arts & recreation | 2017 |
| Engelsvikenstrand AS | Real estate | 2010 |
| Engelsvikskjæret AS | Real estate | 2005 |
| Engelsvikøya Syd Vann- Og Avløpslag SA | Water & waste | 2010 |
| Express Lager AS | Real estate | 2023 |
| Fernløf Holding AS | Professional & scientific | 2005 |
| Flatøy Hjemmebakeri AS | Hospitality | 1998 |
| Flybåten AS | Transport & logistics | 2005 |
| Fredrikstad Betongentreprenør AS | Construction | 2026 |
| Fredrikstad Regnskap AS | Professional & scientific | 2000 |
| Fyf AS | Wholesale & retail | 2024 |
| Glommens GT. 12 AS | Real estate | 2021 |
| Granitop AS | Wholesale & retail | 2017 |
| Grill Og Racing AS | Real estate | 2019 |
| H Paar Consult AS | Wholesale & retail | 1997 |
| Haftors Parkettsliperi AS | Construction | 2018 |
| Hagebiota AS | Administrative & support | 2025 |
| Hankø Vakt Og Hytteservice AS | Administrative & support | 2013 |
| Haug Malmstrøm Holding AS | | 2019 |
| Hellerud AS | Real estate | 2012 |
| Herosc Invest AS | Professional & scientific | 2012 |
| Holding Yousafe AS | | 2026 |
| Hon Invest AS | | 2019 |
| Hvaler Oyster AS | Agriculture & fishing | 2021 |
| Hydroh Holding AS | Professional & scientific | 2015 |
| Ilex Holding AS | Real estate | 2017 |
| Integ AS | Professional & scientific | 2021 |
| J Percy AS | Mining & quarrying | 2017 |
| JHB Eiendom AS | Real estate | 2006 |
| Johnseveien 4 AS | Real estate | 2025 |
| Juha Industries AS | Professional & scientific | 2025 |
| K.S. Holding AS | Real estate | 2005 |
| Karlsøen Bygg AS | Construction | 2010 |
| Karlsøen Invest AS | | 2025 |
| Kvaløyvågen Gård AS | Real estate | 2020 |
| Kvitfjell Vest Solsiden AS | Real estate | 2020 |
| La-Moon AS | Hospitality | 2024 |
| Langgård Holding AS | Real estate | 2021 |
| Lars Andersen Anno 1867 Engelsviken AS | Wholesale & retail | 1998 |
| Levate AS | Real estate | 1998 |
| Lida Holding AS | Education | 2015 |
| Lysgaard Holding AS | Real estate | 2024 |
| Maren Sofie Mangersnes Holding AS | | 2023 |
| Mariusbakken Invest AS | | 2026 |
| Maskinentreprenør Karsten Mikalsen AS | Construction | 2011 |
| Mevoy AS | | 2024 |
| Microhelse AS | Wholesale & retail | 2021 |
| Migtech Solutions AS | Professional & scientific | 2025 |
| Mle Norge AS | | 2023 |
| Moloveien 14 AS | Manufacturing | 1984 |
| Noraccounting Holding AS | Professional & scientific | 2024 |
| Okei Holding AS | | 2022 |
| Onsøy Eiendom Ans | Real estate | 2003 |
| Onsøy Lyd & Lys AS | Administrative & support | 2018 |
| Onsøy Rør AS | Construction | 2019 |
| Onsøyværing AS | Real estate | 2007 |