| Artic Light AS | Information & communication | 2006 |
| BBF Eiendom AS | Real estate | 2017 |
| Bee & Climate Technologies AS | Professional & scientific | 2025 |
| Bexo AS | Professional & scientific | 2010 |
| Blefjell Lodge AS | Hospitality | 2022 |
| Bondal AS | Professional & scientific | 2014 |
| Bondal Bil & Fritid AS | Wholesale & retail | 2012 |
| Bondal Invest AS | Real estate | 2017 |
| Destination Blefjell AS | Hospitality | 2025 |
| Dyrebu Drift AS | Construction | 2026 |
| E Grøslie Holding AS | | 2019 |
| Fagsenteret AS | Real estate | 2005 |
| Fløterveien Eiendom AS | Real estate | 2018 |
| Geir Vatnebryn AS | Construction | 2001 |
| Groven Holding AS | Real estate | 2016 |
| Grønbu Eiendom AS | Real estate | 2003 |
| Grøslie Eiendom Ans | Real estate | 2005 |
| Haugen Gård AS | Real estate | 2022 |
| Haugerud Holding AS | Financial services | 2017 |
| Hyperion Da | Information & communication | 2007 |
| Isobygg Buskerud AS | Construction | 2023 |
| Jarle Mojaren AS | Transport & logistics | 2007 |
| JPD Holding AS | Administrative & support | 2024 |
| K. Lauvlid AS | Manufacturing | 2021 |
| Lampeland Elektriske AS | Construction | 2006 |
| Lampeland Tomteutvikling AS | Real estate | 2026 |
| Lastebilsenteret AS | Other services | 2004 |
| Lauvlid Eiendom AS | Real estate | 2024 |
| Machinesoft AS | Information & communication | 2012 |
| MBN Eiendom AS | Real estate | 2008 |
| Mesterbygg Numedal AS | Construction | 2005 |
| MKM AS | Financial services | 2022 |
| Nauplius Da | Information & communication | 2009 |
| Neoptolemus Da | Information & communication | 2009 |
| Nipeto Eiendom AS | Real estate | 2023 |
| Nipeto Invest AS | Real estate | 2007 |
| Nipeto Vann- Og Avløpsselskap AS | Water & waste | 2005 |
| Numedal Bygg AS | Construction | 1981 |
| O Grøslie Holding AS | Real estate | 2018 |
| O.G.Gulbrandsen AS | Wholesale & retail | 2014 |
| Ramsrud AS | Mining & quarrying | 2016 |
| Rearden AS | Real estate | 2005 |
| Skog, Brøtan Da | Agriculture & fishing | 1999 |
| Snøtt AS | Construction | 2025 |
| Spiro Psychology | Health & social care | 2026 |
| Svene Industrier AS | Financial services | 2008 |
| Svene Pukkverk AS | Mining & quarrying | 2020 |
| Søndre Koppangen 119/2 Ans | Agriculture & fishing | 2000 |
| Vatnebryn Eiendom AS | Real estate | 2010 |
| Veglaget Ertstjennvegen SA | Real estate | 1981 |
| Vidar Rustand Transport Ans | Construction | 2007 |
| Villa Bodutleie AS | Real estate | 2012 |
| Villa Holding AS | Real estate | 2011 |
| Villa Hytte Og Fritid AS | Wholesale & retail | 2015 |
| Villa Montasje AS | Construction | 2012 |
| Villa Sol Eiendom AS | Real estate | 2011 |
| Welding Service AS | Manufacturing | 2015 |
| Ødegarden Gravetjenester AS | Construction | 2024 |