| Innovateit AS | Information & communication | 2025 |
| Isaksen Bygg & Eiendom AS | Construction | 2012 |
| Isebakkeveien 47 AS | Real estate | 2023 |
| Isebakkeveien 79 AS | Real estate | 2008 |
| Jan Hagen Eiendom AS | Real estate | 2003 |
| Janic & Carlo Holding AS | Real estate | 1961 |
| Janic Holding AS | Wholesale & retail | 1989 |
| Jotne Ankers AS | Manufacturing | 1998 |
| JR Service Halden AS | Real estate | 2014 |
| JS Komponenter AS | Wholesale & retail | 2017 |
| K. Killingrød AS | Construction | 2023 |
| Kalesje & Industrisøm AS | Manufacturing | 2007 |
| Karl J. Paulsen Bakeri Og Konditori 2 AS | Manufacturing | 2026 |
| Kompelien Holding AS | Real estate | 2010 |
| Komplett Bygg AS | Real estate | 2016 |
| KORP & SØNN norsk avdeling av utenlandsk foretak NUF | Wholesale & retail | 1995 |
| Korsæth Holding AS | | 2024 |
| Laucius Bygg AS | Administrative & support | 2015 |
| Leander Aspestrand AS | Arts & recreation | 2025 |
| Lie Eiendomsselskap AS | Real estate | 2022 |
| Lund Og Lilleborgen Graving Og Rørleggertjenester AS | Construction | 2014 |
| Lyd Teknikk AS | Arts & recreation | 2023 |
| Løwens AS | Wholesale & retail | 2009 |
| M. Wahlund AS | Administrative & support | 2022 |
| M2M Holding AS | Real estate | 2011 |
| Ma Service AS | Wholesale & retail | 2012 |
| Max Mill AS | Real estate | 2001 |
| Mediashape AS | Information & communication | 2011 |
| Mek & Welding AS | Manufacturing | 2012 |
| Mesterkjøkken AS | Manufacturing | 2007 |
| Mesterkjøkken Sarpsborg AS | Wholesale & retail | 2022 |
| Mirakelfrø AS | Professional & scientific | 2024 |
| Morris Nettbutikk AS | Wholesale & retail | 2025 |
| Morris-Accent AS | Wholesale & retail | 1993 |
| Moss Drift AS | Wholesale & retail | 1994 |
| Motorsporttv AS | Information & communication | 2025 |
| Motz&Kringla Bakeridrift AS | Manufacturing | 2021 |
| Multistorage AS | Real estate | 2006 |
| Muuuhhh AS | | 2022 |
| Name Holding AS | | 2025 |
| Nevamo Holding AS | | 2021 |
| Next AI Holding AS | Information & communication | 2025 |
| Nilsen & Staal Bygg AS | Construction | 2025 |
| Nordahl & Sønn AS | Construction | 1986 |
| Nordic BM AS | Wholesale & retail | 2007 |
| Nordic Design Trade AS | | 2007 |
| Nordic Filters AS | Manufacturing | 2024 |
| Nordic Handbag AS | Real estate | 2007 |
| Norn Invest AS | | 2026 |
| Norrens AS | Water & waste | 2013 |
| Norwegian Seafood Trade AS | Wholesale & retail | 2019 |
| Notorious Management Ans | | 1989 |
| Novatron AS | Professional & scientific | 2001 |
| Olaf Hansens Eftf AS | Construction | 1976 |
| Opplyst Helse AS | Wholesale & retail | 2025 |
| Origo Blue AS | Administrative & support | 2024 |
| Oropod AS | Information & communication | 2025 |
| Orød Lystgård Ans | Real estate | 2012 |
| Orød Rådgivning Tor Øvrebø AS | Professional & scientific | 2014 |
| Otkat Capital AS | Real estate | 2007 |
| P Isaksen Holding AS | Real estate | 2020 |
| Parkmann AS | Transport & logistics | 2020 |
| Per KR Lindhaugen Agentur Per Kristian Og Liv Pladsen Lindhaugen Ans | Wholesale & retail | 1988 |
| Peter Johansson Kvarnvik Polska | Construction | 2014 |
| Pim Bygg AS | Construction | 2025 |
| Proserve AS | Administrative & support | 2004 |
| Proserve Eiendom AS | Administrative & support | 2013 |
| Proserve Holding AS | Administrative & support | 2017 |
| Realmatch AS | Real estate | 2016 |
| Reklame Og Høydeservice AS | Professional & scientific | 2012 |
| Renewal AS | | 2020 |
| Rikke Harboe AS | Other services | 2026 |
| Sajaco Nordic AS | Wholesale & retail | 1997 |
| Sajaco Nordic Holding AS | Wholesale & retail | 2024 |
| Sentrum Bilservice AS | Other services | 2010 |
| Signebøen Maskin AS | Construction | 2013 |
| Skattejakten AS | Administrative & support | 2023 |
| Skogsbilveien Lilledal-Myrane SA | Construction | 2001 |
| Skolegata 35 Eiendom AS | Real estate | 2023 |
| Skolegata 37 AS | Real estate | 2023 |
| Slippen Brygge AS | Manufacturing | 2014 |
| Smartshock Da | Professional & scientific | 2013 |
| SN Os Holding AS | Wholesale & retail | 2018 |
| SNEKKER4DEG AS | Construction | 2014 |
| Snos Liertoppen AS | Wholesale & retail | 2019 |
| Sommerroveien 4B Eiendom AS | Real estate | 2023 |
| Sommerroveien Utvikling AS | Real estate | 2022 |
| Speedster AS | Information & communication | 2024 |
| Spinneriets Familiesenter Da | Arts & recreation | 1997 |
| Staal & Sønn AS | Manufacturing | 1979 |
| Standerholen Varetransport AS | Transport & logistics | 2024 |
| Stangeskovene Bjørnstad Bruk AS | Manufacturing | 2018 |
| Stangeskovene Tistedal AS | Wholesale & retail | 2016 |
| Ste Lindblad Holding AS | | 2020 |
| Steepridge AS | Information & communication | 2025 |
| Stickstay AS | Wholesale & retail | 2024 |
| Stigo Bygg & Eiendom AS | Real estate | 2021 |
| Store Bjørnstad AS | Agriculture & fishing | 2003 |
| Strakhovka Capital AS | Real estate | 2020 |
| Svenco Holding AS | Wholesale & retail | 2023 |