| Aarø Holding AS | Real estate | 1999 |
| Adler Konsult II AS | Real estate | 2022 |
| Air Traffic AS | Transport & logistics | 2012 |
| Aleiron AS | Professional & scientific | 2021 |
| Alexander Hermansen AS | Administrative & support | 2018 |
| Anne Eilertsen AS | Financial services | 2005 |
| Art by Hassel AS | Arts & recreation | 2020 |
| Bekkesus AS | Professional & scientific | 2022 |
| Betesda Studentbolig AS | Real estate | 2014 |
| Bftf Eiendom AS | Administrative & support | 2005 |
| Boligprosjekt Partner AS | Construction | 2018 |
| Botnekilen Båthavn Drift AS | Transport & logistics | 2022 |
| Brekkesletta 6 AS | Real estate | 2017 |
| Brevik Marina Eiendom AS | Real estate | 2018 |
| Brusevolddalen Holding AS | | 2022 |
| Byggmester Hvidsten AS | Construction | 2023 |
| Båthavna AS | Real estate | 2023 |
| Båttaxi AS | Transport & logistics | 2005 |
| Cafecompagniet AS | Hospitality | 2014 |
| Cardio AS | Hospitality | 1996 |
| Cardio Eiendom AS | Hospitality | 2002 |
| Charlie Media & Invest AS | Professional & scientific | 2012 |
| Concept Norway AS | Wholesale & retail | 2010 |
| Dag-Adler Konsult AS | | 2023 |
| Den Gamle Skolen AS | Hospitality | 2000 |
| Digitalt AS | Information & communication | 1990 |
| Ditt Hvaler AS | Administrative & support | 2016 |
| Edholmen Marina AS | Transport & logistics | 2009 |
| Edholmen Marina Brygger AS | Arts & recreation | 2025 |
| Edholmen Marina Landhandel AS | Wholesale & retail | 2026 |
| Elagenten Norge AS | Professional & scientific | 1996 |
| Enabler Holding AS | Information & communication | 2023 |
| Fauskanger AS | | 2017 |
| Felix Regnskap AS | Professional & scientific | 2021 |
| Festihvaler AS | Arts & recreation | 2022 |
| Folkets Elektro AS | Construction | 2003 |
| Fotvarden AS | Financial services | 2014 |
| Førstereis AS | Hospitality | 2009 |
| Gamgod AS | Real estate | 2021 |
| Gilboe Vann Og Avløp SA | Water & waste | 2020 |
| H.P. Pettersen Eftf. AS | Wholesale & retail | 2018 |
| H.P. Pettersen Eftf. Eiendom AS | Real estate | 2018 |
| Hans-Jørgen Herje AS | Real estate | 2005 |
| Hollungen AS | Transport & logistics | 2001 |
| Hvaler Beitelag SA | Agriculture & fishing | 1979 |
| Hvaler Båtdekk AS | Manufacturing | 2019 |
| Hvaler Elektriske AS | Construction | 2009 |
| Hvaler Gjestgiveri AS | Hospitality | 2002 |
| Hvaler Høytrykk AS | Water & waste | 2022 |
| Hvaler Innovasjon AS | Real estate | 1990 |
| Hvaler Regnskap AS | Professional & scientific | 2017 |
| Hvaler Resort AS | Hospitality | 2005 |
| Hvaler Vaktmesterservice AS | Administrative & support | 2020 |
| Hvalersambandet AS | Transport & logistics | 2003 |
| Hvalersider AS | Manufacturing | 2020 |
| Høiden Invest AS | Wholesale & retail | 2007 |
| Ictus AS | Real estate | 2006 |
| Imobilia AS | Real estate | 1995 |
| Jarl Management AS | Professional & scientific | 2005 |
| Jensvoll AS | Professional & scientific | 1996 |
| Jontec AS | Professional & scientific | 2013 |
| KCH Holding AS | Real estate | 2014 |
| Kirkeøy Bygg AS | Construction | 2019 |
| Kirkøy Holding AS | Real estate | 2023 |
| Kirkøy Maskinentreprenør AS | Construction | 1986 |
| Kirkøy Næringseiendom AS | Real estate | 2022 |
| Kjerringholmen Vann Og Avløpslag SA | Water & waste | 2006 |
| Knutsen Heim 1 AS | Real estate | 2025 |
| Konsulentdamene AS | Professional & scientific | 2023 |
| Korshavn Gård AS | Real estate | 2021 |
| Kremmerhuset Skjærhalden AS | | 2005 |
| Kristiansen Murservice AS | Construction | 2012 |
| Kristianslund Invest AS | Financial services | 2014 |
| Kristinefjellets Vann Og Avløp SA | Water & waste | 2016 |
| Lauer Va SA | Water & waste | 2008 |
| Ledelinjen AS | Professional & scientific | 2023 |
| Legalett Norge AS | Real estate | 2023 |
| Lux Fiber AS | Construction | 2018 |
| Maremma Norge AS | Wholesale & retail | 2018 |
| Marsell Bygg AS | Construction | 2023 |
| Marsell Invest AS | Construction | 2023 |
| Mesterhjelp Skjærhalden AS | Health & social care | 2017 |
| MS Hera Holding AS | Financial services | 2005 |
| Maskin & Motor A/S | Real estate | 1988 |
| Nadir Hvaler Fjordcruise AS | Transport & logistics | 2010 |
| Nasjonalparksupply AS | Transport & logistics | 2017 |
| Nordre Holtefeltet Vann- Og Avløpslag SA | Water & waste | 2006 |
| Nordum Holding AS | | 2020 |
| Norway Light & Power AS | Wholesale & retail | 2015 |
| Nygaardsgata Cafe & Bistro AS | Hospitality | 2019 |
| O Reinertsen AS | Real estate | 1985 |
| Oe Invest AS | | 2017 |
| Online Investment AS | | 2007 |
| Palm Tree Design AS | Manufacturing | 2023 |
| Palm Tree Holding AS | Wholesale & retail | 2022 |
| Plankebyen Elektriske AS | Construction | 2013 |
| Raadhuset Executive AS | Professional & scientific | 2025 |
| Randi Eilertsen AS | Financial services | 2005 |
| Romsund Vann Og Avløp SA | Water & waste | 2006 |
| Rumba Ans Vivi Sverre Helge Baardseth | Hospitality | 2000 |