| A.I.Aaker AS | Manufacturing | 2020 |
| All Green Solutions AS | Professional & scientific | 2022 |
| Apollon AS | Agriculture & fishing | 2024 |
| Apollon Crew AS | | 2024 |
| Arctic Cod AS | Agriculture & fishing | 2016 |
| Arnt Inge Holding AS | Manufacturing | 2020 |
| Artistservice Ans | Wholesale & retail | 1997 |
| Artistservice AS | Real estate | 2025 |
| Asle Åkerøy AS | Agriculture & fishing | 2020 |
| Bollhaugen AS | Real estate | 1988 |
| Bollhaugen Drift AS | Wholesale & retail | 2023 |
| Coop Dønna SA | Wholesale & retail | 1945 |
| Dalsvåg Samdrift Da | Agriculture & fishing | 2006 |
| Dori Famous Da | Wholesale & retail | 2015 |
| Dreaming Up North AS | Wholesale & retail | 2020 |
| Dynjarnes Eiendom AS | Real estate | 2018 |
| Dønna Asvo AS | Health & social care | 1992 |
| Dønna Boligselskap AS | Real estate | 2012 |
| Dønna Eiendomsutvikling AS | Real estate | 2013 |
| Dønna Fiskemottak AS | Wholesale & retail | 2006 |
| Dønna Pels Ans | Agriculture & fishing | 1988 |
| Dønna Rorbuer Bøteriet AS | Real estate | 2010 |
| Dønnabygg AS | Construction | 2025 |
| Dønnesfjellstua AS | Hospitality | 2012 |
| Ea Bygg & Service AS | Construction | 2022 |
| Ecomarin AS | Administrative & support | 2023 |
| Ecomarin Group AS | Administrative & support | 2009 |
| Egsa Invest AS | Agriculture & fishing | 2023 |
| Fishbase Group AS | Agriculture & fishing | 2022 |
| Fishbase Infrastructure AS | Real estate | 2018 |
| Fishbase Salmon AS | Agriculture & fishing | 2007 |
| Fryseriet Pub AS | Real estate | 2014 |
| Fysioform AS | Health & social care | 1998 |
| G.O.Aaker AS | Agriculture & fishing | 2020 |
| Ga Maritim Da | Agriculture & fishing | 2002 |
| Geir Ove Invest AS | Agriculture & fishing | 2020 |
| Gem Renown Da | Wholesale & retail | 2023 |
| GPS Collars Innovasjon AS | Professional & scientific | 2023 |
| Heidis Sjokoladedrøm AS | Hospitality | 2018 |
| Helgeland Hytteservice Da | Administrative & support | 2006 |
| Helgeland Rib AS | Arts & recreation | 2026 |
| Helgeland Skyssbåt AS | Administrative & support | 2013 |
| Hestad Gård AS | | 2022 |
| Hjortdahl AS | Manufacturing | 2020 |
| Hølhaugen Da | Agriculture & fishing | 2018 |
| Ian Ar Hulbert AS | Agriculture & fishing | 2023 |
| J.Å. Aaker Invest AS | Real estate | 2013 |
| K Femten AS | Real estate | 2016 |
| Karlsholmveien 15 AS | Real estate | 2020 |
| Karusellberget Kolonial AS | Wholesale & retail | 1996 |
| Kilts Holding AS | | 2024 |
| Letsea AS | Professional & scientific | 1996 |
| Lisøe Teknisk Support AS | Administrative & support | 1989 |
| Lynghaugen Gård Da | Real estate | 2017 |
| Max Video & Kiosk Ans | Wholesale & retail | 1993 |
| Melkeskvetten Samdrift Dønna Da | Agriculture & fishing | 2006 |
| Melketoppen Da | Agriculture & fishing | 2022 |
| Nordøy Brygge AS | Real estate | 2009 |
| Nortugs AS | Transport & logistics | 1998 |
| Norvet AS | Professional & scientific | 2012 |
| Olsen Maskin & Transport AS | Construction | 2017 |
| Qtvet AS | Professional & scientific | 2019 |
| Rosita Ans | Other services | 1991 |
| Rosita Ratfishoil AS | Wholesale & retail | 2026 |
| Salmo Innovation AS | Professional & scientific | 2015 |
| Salmo Pharma AS | Professional & scientific | 2015 |
| Sanitær Service Dønna AS | Construction | 2024 |
| Sivertsen Group AS | | 2025 |
| Skagagrønnsaker Da | Agriculture & fishing | 2024 |
| Skagemo Maritime Consultancy AS | Professional & scientific | 2007 |
| Skar Skjelloppdrett AS | Agriculture & fishing | 2001 |
| Skei Eiendom Da | Real estate | 2005 |
| Solbakken Småbruk Ans | Agriculture & fishing | 2018 |
| Stavseng Invest AS | Real estate | 2005 |
| Sørviking Da | Agriculture & fishing | 2020 |
| Tømmer På Sjøen AS | Agriculture & fishing | 2023 |
| Vispro AS | Transport & logistics | 2014 |
| Vågsveien Industri- Og Tjenestetorg AS | Administrative & support | 2022 |
| Walrus AS | | 2020 |
| Åkergutten AS | Agriculture & fishing | 2020 |
| Åkerøya AS | Manufacturing | 2019 |
| Øya Bistro - Og Overnatting AS | Administrative & support | 1990 |