| LTS Aktiv AS | Real estate | 2013 |
| LTS Maskin AS | Wholesale & retail | 2001 |
| Lusk AS | Information & communication | 2022 |
| Mann & Mini AS | Wholesale & retail | 2024 |
| Maskinentreprenøren Arnstein Revheim AS | Construction | 1993 |
| Medietunet Da | Information & communication | 2008 |
| Mjelde Bygg Holding AS | Construction | 2023 |
| Mjelstad Og Stokke Eiendom AS | Real estate | 2003 |
| Mjelstad Og Stokke Rørleggerforretning AS | Construction | 1995 |
| Mjelstad Søndre, G.Nr. 122 B.Nr. 2 Da | Agriculture & fishing | 2004 |
| Mjøs Eiendom AS | Real estate | 2016 |
| Mjøs Holding AS | Financial services | 2016 |
| Mjøs Invest AS | Professional & scientific | 2024 |
| Mjøs Metallvarefabrikk AS | Manufacturing | 1982 |
| Mjøsvågen Landhandleri AS | Wholesale & retail | 2018 |
| Mortensen Elektro & Automasjon AS | Construction | 2019 |
| MVB Invest AS | Financial services | 2012 |
| Myking Kasteel AS | Real estate | 2013 |
| Neuland AS | Professional & scientific | 2025 |
| Njåstad AS | | 2019 |
| Njåstad Eiendom AS | Real estate | 2008 |
| Njåstad Samdrift Da | Agriculture & fishing | 2003 |
| Nordic Gifts AS | Wholesale & retail | 1998 |
| Norlender Knitwear AS | Manufacturing | 2002 |
| Nye Øystein Øvsthus AS | Administrative & support | 2026 |
| Odalsmyra AS | Manufacturing | 2008 |
| Omaks Engineering AS | Manufacturing | 2016 |
| Osterøy Aktiv AS | Arts & recreation | 1998 |
| Osterøy Consulting AS | Manufacturing | 2010 |
| Osterøy Hytteutleige Ans | Hospitality | 1995 |
| Osterøy Kafe AS | Hospitality | 2025 |
| Osterøy Miljø AS | Water & waste | 2002 |
| Osterøy Skogsamarbeid AS | Agriculture & fishing | 1991 |
| Osterøy Tannlegesenter AS | Health & social care | 2013 |
| Osterøy Transport AS | Transport & logistics | 2002 |
| Osterøy Utvikling AS | Professional & scientific | 1994 |
| Osterøykroa AS | Hospitality | 2012 |
| Osterøykroa Eigedom AS | Real estate | 2012 |
| Otas Holding AS | Real estate | 2009 |
| Otas Service AS | Manufacturing | 2009 |
| Peppino Hårstudio AS | Other services | 2001 |
| Poev AS | | 2020 |
| Renhold++ AS | Administrative & support | 2019 |
| Revheim Gravferdshjelp AS | Other services | 2023 |
| Rovers AS | Manufacturing | 2013 |
| S+M M-S AS | | 2025 |
| Safestream AS | Manufacturing | 2021 |
| Skyblikk AS | Professional & scientific | 2026 |
| SLK Holding AS | Financial services | 2018 |
| Solberg Mek Verksted AS | Other services | 1990 |
| Solberg Mur Og Hage AS | Administrative & support | 2026 |
| Solberg Sagbruk Da | Manufacturing | 2004 |
| Solnor AS | Administrative & support | 2014 |
| Staal Haar AS | Other services | 2012 |
| Strandli AS | Manufacturing | 2008 |
| Svardals AS | Transport & logistics | 2026 |
| Sve-Invest AS | | 2021 |
| Svemko AS | Manufacturing | 2015 |
| Svenheim Sesonglager AS | Real estate | 2024 |
| Svenheimsmarka Veglag SA | Agriculture & fishing | 2018 |
| Sweeptech AS | Wholesale & retail | 2020 |
| T. Tufte Eiendom AS | Real estate | 2018 |
| T. Tufte Holding AS | Real estate | 2018 |
| Tejom Holding AS | Real estate | 2016 |
| THB Equestrian Ltd Nuf | Agriculture & fishing | 2015 |
| Tysse AS | Wholesale & retail | 2005 |
| Tysse Boligutleie AS | Real estate | 2016 |
| Tysse Eiendom AS | Real estate | 2019 |
| Tysse Invest AS | Transport & logistics | 2008 |
| Tysse Maskin AS | Construction | 2024 |
| Tysse Maskinutleige AS | Construction | 2014 |
| Valsø Trafikkskole AS | Education | 2018 |
| Vea Vest AS | Construction | 2025 |
| Vest Trade AS | Hospitality | 1985 |
| Vestland Villaservice AS | Administrative & support | 2020 |
| Visjon Media AS | Professional & scientific | 2023 |
| Åsgardane Holding AS | | 2025 |
| Øvsthus AS | Real estate | 2004 |
| Øystein Øvsthus AS | Financial services | 2005 |
| Øystein Øvsthus Holding AS | Administrative & support | 2025 |
| Øyvind Kleiveland Film AS | Information & communication | 2026 |