| A Alsli Invest AS | Construction | 2021 |
| Akri Holding AS | Professional & scientific | 2017 |
| Akri Invest AS | Real estate | 2017 |
| Allskog Logistikk AS | Transport & logistics | 2003 |
| Amdal 1 AS | | 2025 |
| Amdal 2 AS | | 2025 |
| Amdal 3 AS | | 2025 |
| Amdal 4 AS | | 2025 |
| Amdal 5 AS | | 2025 |
| Amdal 6 AS | | 2025 |
| Amdal Elektro AS | Construction | 2000 |
| Amdal Elektro Eiendom AS | Real estate | 2021 |
| Ammo Bygg AS | Construction | 2022 |
| Arne Okkenhaug Eftf AS | Professional & scientific | 1994 |
| Aroway AS | Administrative & support | 2021 |
| AS Skogmo Bruk | Manufacturing | 1940 |
| AS Skogmo Eiendomsinvest | Real estate | 2020 |
| AS Skogmo Invest | Manufacturing | 2018 |
| Auto + AS | Wholesale & retail | 2025 |
| Aw Maskin AS | Administrative & support | 2015 |
| B-K Holding AS | | 2025 |
| Beauty Hjørnet AS | Other services | 2025 |
| Betong Bolig AS | Construction | 2020 |
| Bilexport AS | Wholesale & retail | 2022 |
| BKS Eiendom AS | Real estate | 2023 |
| Blengsli Bilberging AS | Transport & logistics | 2003 |
| Boligprosjekt Overhalla AS | Construction | 2020 |
| Boring Old Farts SA | Arts & recreation | 2020 |
| Bpo Eiendom AS | Real estate | 2020 |
| Bpo Holding AS | Construction | 2020 |
| Brink Eiendom AS | | 2010 |
| Byggevarehuset Namdal AS | Wholesale & retail | 2020 |
| Calexo AS | Professional & scientific | 1999 |
| CF Maskin Skogmo AS | Wholesale & retail | 2025 |
| Din Bolig Overhalla AS | Real estate | 2022 |
| Efri Halfa AS | Administrative & support | 2021 |
| Eid Transport AS | Transport & logistics | 1998 |
| Eidsvassvegen SA | Real estate | 1976 |
| Engblom Eiendom AS | Real estate | 2026 |
| Engblom Holding AS | | 2026 |
| Evolve Service AS | Other services | 2024 |
| Felles Landbruk AS | Agriculture & fishing | 2021 |
| Flasnes Consulting Services AS | Professional & scientific | 2018 |
| Fridtun Ungdomshus | Real estate | 1939 |
| FT Bensin Og Utleie AS | Wholesale & retail | 2022 |
| Furre Fellesfjøs AS | Real estate | 2015 |
| Furre Samdrift Da | Agriculture & fishing | 2005 |
| FYSIOTRIM1 AS | Health & social care | 2009 |
| Galguften AS | Financial services | 2013 |
| Galguften Betongpumping AS | Construction | 1997 |
| Galguften Eiendom AS | Real estate | 2005 |
| Gammelstua Friluftsbarnehage SA | Education | 1996 |
| Gl-Bygg AS | Construction | 2015 |
| GLB Eiendom AS | Real estate | 2017 |
| GLB Holding AS | Construction | 1988 |
| Grong Apotekbygg AS | Real estate | 2015 |
| Grunnpartner AS | Construction | 2014 |
| GS Mur & Flis AS | Construction | 2024 |
| GSG Maskin AS | Construction | 2017 |
| H&R Equity AS | Financial services | 2011 |
| Hamara Invest AS | Administrative & support | 2011 |
| Hasselvold Invest AS | Real estate | 2020 |
| Haugen Keramikk Liv Aursand Og Asbjørn Hagerup | Manufacturing | 1995 |
| Haugomvegen 5 AS | Administrative & support | 2020 |
| Haugum Mølle SA | Real estate | 2017 |
| Himo Potet Da | Agriculture & fishing | 2014 |
| HP Holding Overhalla AS | | 2020 |
| HPB AS | Real estate | 2020 |
| HRL Eiendom AS | Real estate | 2024 |
| Hus Og Hageservice AS | Administrative & support | 2006 |
| Høstland Invest AS | Wholesale & retail | 2016 |
| Ing. Jorleif Lian AS | Professional & scientific | 1998 |
| Ipa Landbruksmaskiner AS | Wholesale & retail | 2016 |
| J Barlien Transport AS | Transport & logistics | 1981 |
| Jal Eiendom AS | Real estate | 2023 |
| Johs Blengsli & Sønn AS | Real estate | 2000 |
| K.R.A Holding AS | Professional & scientific | 2026 |
| Ka Bygg AS | Construction | 2004 |
| Kabar Invest AS | Real estate | 2017 |
| Kjøglum Holding AS | | 2016 |
| KVN Entreprenør AS | Professional & scientific | 2024 |
| Kværnø Transport AS | Construction | 1999 |
| Lestum AS | Agriculture & fishing | 2006 |
| Lestum Invest AS | Manufacturing | 2021 |
| Lorvik Bygg AS | Construction | 2024 |
| Lux Wash AS | Other services | 2025 |
| Lysberg Agro Holding AS | | 2024 |
| Midt Norsk Båtformidling AS | Wholesale & retail | 2014 |
| Midt Norsk Rørinspeksjon Holding AS | Real estate | 2021 |
| Midt-Norsk Fjellteknikk AS | Construction | 2023 |
| Moa Transport AS | Transport & logistics | 2026 |
| Moa Transport AS | Transport & logistics | 1996 |
| Moas Invest AS | | 2026 |
| Monrad Holding AS | Real estate | 1999 |
| Mosand AS | Wholesale & retail | 1997 |
| MSV AS | Professional & scientific | 2012 |
| Multiservice Overhalla AS | Other services | 1995 |
| Namdal Betong & Plast AS | Manufacturing | 1971 |
| Namdal Container & Gjenvinning AS | Real estate | 2017 |
| Namdal Kornsilo Og Mølle AS | Manufacturing | 2013 |