| A Halvorsen Invest AS | | 2022 |
| A. I. Holding AS | Agriculture & fishing | 2005 |
| A. Jenset Holding AS | Financial services | 2005 |
| Ami Holding AS | Financial services | 2008 |
| Atb Holding AS | Real estate | 2018 |
| Atle Godø Invest AS | Agriculture & fishing | 2019 |
| Austamåne AS | | 2022 |
| Bjerkestad AS | Real estate | 2021 |
| Blø Bygg AS | Construction | 1992 |
| BLØ BYGG Per Inge Blø & Co | Real estate | 1984 |
| Boah AS | Real estate | 2021 |
| BR Sørlie AS | Financial services | 2008 |
| Breskaret Invest AS | | 2025 |
| Bugge Transport AS | Transport & logistics | 2023 |
| Bygg Kompetanse AS | Construction | 2007 |
| Byggfag Midsund AS | Wholesale & retail | 2001 |
| Bård Bjørnerem Invest AS | Agriculture & fishing | 2005 |
| Bøen Eiendom AS | Real estate | 2012 |
| Cinderella Eco Group AS | Manufacturing | 2012 |
| Cinderella Eco Sales AS | Manufacturing | 2012 |
| Cinderella Technology AS | Professional & scientific | 1987 |
| Conawi AS | Professional & scientific | 2005 |
| Drønnen Gard AS | Real estate | 2009 |
| E Østigård AS | Administrative & support | 2022 |
| Easyhost Da | Information & communication | 2004 |
| El-Va AS | Real estate | 2018 |
| Embea Invest AS | | 2026 |
| Enviro Living AS | Wholesale & retail | 2011 |
| FHR Eiendom AS | Construction | 2019 |
| Frø Holding AS | Construction | 2021 |
| Gjerdebua AS | Real estate | 2019 |
| Gode Kapital AS | Wholesale & retail | 2020 |
| Gode Retail AS | Wholesale & retail | 2020 |
| Godø Eiendom AS | Real estate | 2018 |
| H Heggdal AS | Wholesale & retail | 1975 |
| H R Maskin Da | Agriculture & fishing | 2014 |
| Havsnurp AS | Agriculture & fishing | 1997 |
| Havto AS | Agriculture & fishing | 2025 |
| Heimtun Invest AS | Financial services | 2005 |
| Hennes Salong AS | Other services | 2024 |
| Hesi Eiendom AS | Real estate | 2026 |
| Hurtigbåtene Ans | Transport & logistics | 1989 |
| Husarfisk AS | Agriculture & fishing | 1997 |
| Håbet Eiendom AS | Real estate | 2021 |
| Håbet Kystfiske AS | Agriculture & fishing | 2017 |
| Håbet Sjø AS | Agriculture & fishing | 2021 |
| Høststjerna AS | | 1999 |
| Imarin AS | Administrative & support | 2008 |
| Imis Holding AS | | 2023 |
| Innendørs Midsund AS | Hospitality | 1992 |
| Inveritech AS | Professional & scientific | 2021 |
| Itvakta AS | Information & communication | 2019 |
| Jarg Holding AS | Agriculture & fishing | 2012 |
| Jenny Stølen Invest AS | Financial services | 2012 |
| Jostein Godø Invest AS | Real estate | 2018 |
| K Stølen Invest AS | Financial services | 2010 |
| Ka Hole Invest AS | Financial services | 2010 |
| Ka Nygård Holding AS | Financial services | 2012 |
| Kami Holding AS | Financial services | 2009 |
| Kelio Dagligvare AS | Wholesale & retail | 2014 |
| Kigo AS | | 2016 |
| Kih Invest AS | Financial services | 2010 |
| Klauset Vassverk SA | Water & waste | 1975 |
| Klinge Dekk & Service AS | Wholesale & retail | 2023 |
| Klinikk for Fysioterapi & Smertemestring AS | Health & social care | 2015 |
| Kraft Grunn Og Betong AS | Construction | 2023 |
| KRR AS | | 2021 |
| L. J. Jenset Holding AS | Financial services | 2005 |
| L.A.Jenset Invest AS | Real estate | 2019 |
| Lyngjavegen 8 AS | Real estate | 2022 |
| Lyster Kystfiske AS | Agriculture & fishing | 2021 |
| M Nygård Holding AS | | 2012 |
| Mannai AS | Administrative & support | 2025 |
| Mariehamn Kystfiske AS | Agriculture & fishing | 2012 |
| Marius Kirkeland Transport AS | Transport & logistics | 2015 |
| Mico Holding AS | Real estate | 2008 |
| Midsund Avløserlag SA | Agriculture & fishing | 1995 |
| Midsund Bruk AS | Manufacturing | 2015 |
| Midsund Brygge AS | Real estate | 2016 |
| Midsund Eiendom AS | Construction | 2007 |
| Midsund Elektro AS | Construction | 1990 |
| Midsund Fiskebåtrederi AS | Agriculture & fishing | 2001 |
| Midsund Gjestestove AS | Hospitality | 2020 |
| Midsund Industriservice AS | Manufacturing | 2020 |
| Midsund Møbelsenter AS | Real estate | 1992 |
| Midsund Service AS | Administrative & support | 2013 |
| Midsundingen AS | Information & communication | 2017 |
| Midøy Kystfiske AS | Agriculture & fishing | 2017 |
| Midøy Samdrift Da | Agriculture & fishing | 2007 |
| Mifo Midsund AS | Construction | 2004 |
| Misund Data AS | Information & communication | 1985 |
| Misund Kystfiske AS | Agriculture & fishing | 2019 |
| Nanoice AS | Agriculture & fishing | 2011 |
| Norbo Ferie AS | Hospitality | 1987 |
| Nord-Heggdal Vassverk SA | Water & waste | 1996 |
| Nordvest Eiendom I AS | Professional & scientific | 2009 |
| Nordvest Inspeksjon AS | Professional & scientific | 2001 |
| North-South Partnership AS | Professional & scientific | 2009 |
| Notvollen Eiendom AS | Real estate | 2005 |
| Nybo Holding AS | Agriculture & fishing | 2017 |