| A-Ba Eiendom AS | Real estate | 2019 |
| Aandstad AS | Wholesale & retail | 1999 |
| Aandstad Utvikling AS | Information & communication | 2026 |
| Abchar AS | Professional & scientific | 2020 |
| Adrasteia AS | Professional & scientific | 2017 |
| Agrimex AS | Wholesale & retail | 2009 |
| Arctic Kulde Akershus AS | Construction | 2010 |
| Aremark Pukkverk AS | Mining & quarrying | 2009 |
| Arkitekt Steinar Wiig AS | Professional & scientific | 1998 |
| Asol Holding AS | Education | 2025 |
| Athena Equine AS | Agriculture & fishing | 2021 |
| Atle Aamodt AS | | 2022 |
| Baastad Kran & Spesialtransport AS | Construction | 2020 |
| Baastad Mekaniske AS | Manufacturing | 2014 |
| Bea Holding AS | Financial services | 2005 |
| Belgen Holding AS | Construction | 2024 |
| Belgen Maskin Og Transport AS | Construction | 2024 |
| Berger Services Ltd Nuf | Information & communication | 2007 |
| Berget Entreprenør AS | Construction | 2022 |
| Betosag AS | Construction | 2019 |
| Bick Holding AS | Hospitality | 2023 |
| BILSALG24 AS | Wholesale & retail | 2025 |
| BILSALG24 Express NO1 AS | Wholesale & retail | 2026 |
| Bmfl Eiendom AS | Real estate | 2026 |
| Bmfl Holding AS | | 2026 |
| Brannverngrossisten AS | Wholesale & retail | 2025 |
| Bråthen Gård Ans | Agriculture & fishing | 2019 |
| Bygg Og Eiendomsservice AS | Construction | 1998 |
| Byggmester Bjørn Andre Tveter AS | Construction | 2007 |
| Byggmester Fredrik Lier AS | Construction | 2016 |
| Byggmester Fredrik Lier AS | Construction | 2026 |
| Båstad Anlegg Service AS | Construction | 2007 |
| Carpassion AS | Wholesale & retail | 2024 |
| Cetex AS | Administrative & support | 2017 |
| Cfkonsult AS | Professional & scientific | 2023 |
| CMW Holding AS | Professional & scientific | 2022 |
| Dacronor AS | Professional & scientific | 1996 |
| Dahl AS | Real estate | 2002 |
| Dahl Eiendom AS | Real estate | 1998 |
| Damhauggata 14 AS | Real estate | 2021 |
| DC Bygg AS | Construction | 2020 |
| Designice Norway AS | Manufacturing | 2014 |
| Dybdahl AS | Construction | 2009 |
| E.V.L. Holding AS | | 2020 |
| Edine AS | Administrative & support | 2022 |
| Ehd Holding AS | Real estate | 2019 |
| Eiendom 1 Askim AS | Real estate | 2020 |
| Eiendom Invest 1 AS | Real estate | 2008 |
| Eivind Wedding AS | Financial services | 2005 |
| Eknes Prosjekt AS | Professional & scientific | 2017 |
| Elina Eiendom AS | Real estate | 2015 |
| Engs Auto AS | Other services | 1983 |
| Entreprenør 1 AS | Construction | 2010 |
| Erik Aarum Holding AS | Construction | 2024 |
| Erik Mellegaard AS | Construction | 2013 |
| Fabel & Babel Lekehus Ans | Construction | 1996 |
| Fem Messing Da | Arts & recreation | 2023 |
| Festningsveien 5 AS | Real estate | 2026 |
| Filmlocation Østfold AS | Information & communication | 2020 |
| Firesec AS | Education | 2025 |
| Firkløver Eiendom AS | Real estate | 2016 |
| Firma - Holding AS | Construction | 2005 |
| Fjeld Langsæter | Wholesale & retail | 1979 |
| Fjellro Norge Da | Wholesale & retail | 2026 |
| Foss Vaskeri- Og Storhusholdningsservice AS | Manufacturing | 2013 |
| Fru Eiendom AS | Real estate | 2025 |
| Gangnes Bil Og Deler AS | Other services | 2014 |
| Gem AS | Real estate | 2013 |
| Glomviktunet AS | Real estate | 2015 |
| Golden Egeberg Da | Agriculture & fishing | 2003 |
| Gopperud Consulting AS | Professional & scientific | 2020 |
| Granli Hår AS | Other services | 2023 |
| Grav 11 AS | Real estate | 2021 |
| Grav Lagerseksjoner AS | Construction | 2023 |
| Gulvfirma Ht-St Da | Construction | 2005 |
| H.D Workwear AS | Wholesale & retail | 2017 |
| H/S Elektro AS | Construction | 2021 |
| Haaland Takst & Boligveiledning AS | Real estate | 2016 |
| Hamajo Holding AS | Construction | 2025 |
| Hauer & Kjeve AS | Construction | 2015 |
| Havnås Friskole SA | Education | 2025 |
| HD Låven AS | Wholesale & retail | 2020 |
| Hellerud's Transport AS | Transport & logistics | 2019 |
| Henstad Allé 16 AS | Real estate | 2021 |
| Hernes Holding AS | Agriculture & fishing | 2020 |
| Hetam Eiendom Da | Real estate | 2004 |
| Hico Eiendom Invest AS | Real estate | 1960 |
| Himling AS | Construction | 2020 |
| HK INVEST1 AS | Real estate | 2009 |
| HM Gruppen AS | Administrative & support | 2020 |
| HMG Drift AS | Administrative & support | 2023 |
| Holteberg Eiendom AS | Real estate | 2008 |
| Holteberg Holding AS | Health & social care | 1996 |
| Hot Shop AS | Wholesale & retail | 1984 |
| HS Graveservice Da | Construction | 2022 |
| HV Tømrerteknikk AS | Construction | 2021 |
| Håkelia Holding AS | Real estate | 2021 |
| Høitomt Fjellboring AS | Construction | 2019 |
| Høitomt Holding AS | Construction | 2019 |
| Høland Eiendom AS | Construction | 2017 |