| Abrahamsen Consulting AS | Information & communication | 2024 |
| Abrahamsen Invest AS | Information & communication | 2024 |
| Af-Holding AS | Construction | 2018 |
| Aj Byggservice AS | Construction | 2021 |
| Akershus Invest AS | | 2026 |
| Akershus Transport Og Lagerutleie Da | Transport & logistics | 2007 |
| Altifiks AS | Construction | 2022 |
| Andelslaget Tøyenlia Ballplass | Arts & recreation | 1999 |
| Andersens Gym & Kaffe AS | Arts & recreation | 2012 |
| Andmar Holding AS | | 2022 |
| Ann-Charlotte Potevenn AS | Other services | 2025 |
| Anne & Lars Automatservice AS | Professional & scientific | 2015 |
| Ap Eiendom AS | Real estate | 2012 |
| Ap Holding AS | Real estate | 2011 |
| Apptech AS | Information & communication | 2026 |
| AS Eikeland Hyttebygg Og Utleie | Real estate | 2020 |
| AS Haga Hoell & Co | Real estate | 1900 |
| Aspvik Bygg AS | Construction | 2021 |
| At Malerservice AS | Construction | 2022 |
| Averbis Forlag AS | Information & communication | 2026 |
| Avs Holding AS | Wholesale & retail | 2005 |
| Astro Blikkenslagerverksted d.a. | Construction | 1988 |
| Baa Tjenester AS | Professional & scientific | 2015 |
| Battelrep AS | Other services | 2025 |
| BB Nord AS | Real estate | 2011 |
| Befi Holding AS | | 2024 |
| Bernad Renovering AS | Construction | 2026 |
| Bilskreddern AS | Wholesale & retail | 2023 |
| Bilspektrum AS | Wholesale & retail | 2023 |
| Bjerck AS | Information & communication | 2008 |
| Bjørnholtlia Utvikling AS | Real estate | 2011 |
| Bjørns Gatekjøkken Ans | Hospitality | 1989 |
| Blackberry Holding AS | Information & communication | 2022 |
| Blåswixvegen 1 AS | Real estate | 2007 |
| Blåswixvegen 3 AS | Real estate | 2018 |
| Blåswixvegen Invest AS | Real estate | 2020 |
| Bobil Oslo AS | Wholesale & retail | 2017 |
| Borgen Takst AS | Real estate | 2022 |
| Brannsystemer AS | Construction | 2017 |
| Bvin Utvikling Og Eiendomsservice AS | Real estate | 2007 |
| Bygg 3 AS | Construction | 2018 |
| Byggialt AS | Construction | 2023 |
| Bøhlerengen Eiendom AS | Real estate | 2012 |
| C-Optikk Nittedal AS | Wholesale & retail | 2007 |
| Chris Hauger Holding AS | | 2024 |
| CK Regnskap AS | Professional & scientific | 2017 |
| Cobos Holding AS | Financial services | 2013 |
| Colt Kommunikasjon Ans | Professional & scientific | 2006 |
| CON2 Regnskap AS | Professional & scientific | 2021 |
| Consulting & Bilutleie AS | Administrative & support | 2018 |
| CORE52 Impactfunding AS | Professional & scientific | 2019 |
| CW Rør AS | Construction | 2020 |
| CW Rør Holding AS | Construction | 2018 |
| D.K Bygg & Montering AS | Construction | 2017 |
| Daglig Vedlikehold Ans | Administrative & support | 1979 |
| Dahl & Jensen Bygg AS | Construction | 2016 |
| Dahl & Jensen Eiendom AS | Real estate | 2012 |
| Dahl & Jensen Holding AS | Real estate | 2025 |
| Dal Property AS | Real estate | 2023 |
| Daniel Ingebrigtsen Holding AS | Professional & scientific | 2025 |
| Design & Butikkinnredning AS | Construction | 2018 |
| Dig Assist AS | Construction | 2021 |
| Dine Gardiner Og Interiørtekstiler AS | Manufacturing | 2019 |
| Ditt Apotek Åneby AS | Wholesale & retail | 2012 |
| Ditt Interiør AS | Transport & logistics | 2012 |
| Doe Invest AS | | 2024 |
| Ecoland AS | Wholesale & retail | 2016 |
| Efs AS | Construction | 2022 |
| Eh Service AS | Professional & scientific | 2026 |
| Eidskogvegen 54 AS | Real estate | 2006 |
| Elektro-Byggservice AS | Construction | 2024 |
| Elementz AS | Professional & scientific | 2026 |
| Elfi Entreprenør AS | Construction | 2025 |
| Elnæs Holding AS | Construction | 2016 |
| Elseflora AS | Wholesale & retail | 2018 |
| Elvion AS | Transport & logistics | 2026 |
| Elvion Mobility AS | Hospitality | 2026 |
| Elystan Capital Scandinavia AS | Wholesale & retail | 2010 |
| Engveien 20 AS | Construction | 2014 |
| Entreprenør Oslo Service AS | Construction | 2021 |
| Era Bolig AS | Real estate | 2015 |
| Eurotents AS | Wholesale & retail | 1979 |
| Eurotents Scandinavia AS | Wholesale & retail | 2021 |
| Evensen Entreprenør AS | Construction | 2021 |
| Expert Renholdsservice AS | Administrative & support | 2023 |
| Fashionlight AS | Wholesale & retail | 2017 |
| Fearnley Holding AS | Financial services | 2011 |
| Fearnley Invest AS | Real estate | 2011 |
| Forvaltum AS | Administrative & support | 2022 |
| Fosscap Holdings AS | | 2021 |
| Fossegrim Invest AS | | 2022 |
| Fossehagen Holding AS | | 2022 |
| Fredley Club AS | Wholesale & retail | 2026 |
| Fuego Cigars AS | Wholesale & retail | 2024 |
| Geoforce AS | Energy | 2025 |
| Glenn Hauger Holding AS | | 2018 |
| Glittre Barnehage SA | Education | 2017 |
| Glittre Gård AS | Health & social care | 2020 |
| Goelektro AS | Construction | 2023 |
| Gomez Kapital AS | | 2021 |