| Satago AS | Construction | 2010 |
| Sawa Holding AS | Financial services | 2017 |
| Secondo AS | Information & communication | 2024 |
| Selvåg Holding AS | Financial services | 2008 |
| Sentrum Fysioterapi & Trening AS | Arts & recreation | 2006 |
| Shipkon Nuf | Administrative & support | 2009 |
| Sig Holdings AS | Administrative & support | 2017 |
| Sildenskiold AS | Real estate | 1993 |
| Simon Lie Eiendom AS | Real estate | 2003 |
| Sjøen Investering AS | | 2021 |
| Skude AS | Agriculture & fishing | 2008 |
| Skude Bygg AS | Construction | 2017 |
| Skude Bygg Eiendom AS | Real estate | 2007 |
| Skude Bygg Holding AS | Construction | 2011 |
| Skude Bygg Kaigata AS | Real estate | 2016 |
| Skude Entreprenør Holding AS | Construction | 2018 |
| Skude Fryseri AS | Manufacturing | 1950 |
| Skude Holding AS | | 2025 |
| Skude Hydraulikk Og Aluminium AS | Manufacturing | 2020 |
| Skude Invest AS | Real estate | 2020 |
| Skude Service AS | Professional & scientific | 2025 |
| Skude Stein AS | Manufacturing | 2007 |
| Skude Undervisning Da | Education | 2015 |
| Skudebuss AS | Transport & logistics | 2024 |
| Skudenes Bensinstasjon AS | Wholesale & retail | 2016 |
| Skudenes Betong Eiendom AS | Real estate | 1988 |
| Skudenes Bryggeri AS | Manufacturing | 2014 |
| Skudenes Camping Drift AS | Hospitality | 2026 |
| Skudenes Handel AS | Wholesale & retail | 2023 |
| Skudenes Jernvare AS | Wholesale & retail | 1975 |
| Skudenes Lydservice AS | Administrative & support | 2020 |
| Skudenes Mek. Verksted Selskapslokale AS | Hospitality | 2015 |
| Skudenes Service Senter AS | Real estate | 2003 |
| Skudeneshavn Tannlegesenter AS | Health & social care | 2017 |
| Skudenesnytt AS | Information & communication | 2019 |
| Slågstemmen Barnehage SA | Education | 2001 |
| Sofo Tonjer AS | Transport & logistics | 2006 |
| Solan AS | Financial services | 2005 |
| Solship Invest 4 AS | Transport & logistics | 2020 |
| Solstad Brasil AS | Mining & quarrying | 2000 |
| Solstad Brasil Holding AS | Mining & quarrying | 2020 |
| Solstad Construction AS | Mining & quarrying | 2007 |
| Solstad Invest AS | Real estate | 1987 |
| Solstad Management AS | Transport & logistics | 2000 |
| Solstad Management Holding AS | Transport & logistics | 2020 |
| Solstad Maritime AS | Transport & logistics | 2023 |
| Solstad Maritime ASA | Transport & logistics | 2023 |
| Solstad Mexico AS | Mining & quarrying | 2010 |
| Solstad Offshore ASA | Transport & logistics | 1987 |
| Solstad Operations Holding AS | Mining & quarrying | 2020 |
| Solstad Rederi AS | Transport & logistics | 1997 |
| Solstad Shipholding AS | Mining & quarrying | 2020 |
| Solstad Shipowning Holding AS | Transport & logistics | 2020 |
| Solstad Shipping AS | Transport & logistics | 1997 |
| Solstad Subsea Holding AS | Transport & logistics | 2020 |
| Solstad Superior AS | Mining & quarrying | 2016 |
| Solvik Investering AS | Real estate | 2007 |
| Spekter Eiendom AS | Real estate | 1983 |
| SR Holdings AS | | 2020 |
| Stano Holding AS | | 2022 |
| Steda Holding AS | | 2022 |
| Steiningsholmen Eiendom AS | Real estate | 2005 |
| Steiningsodden AS | Real estate | 2025 |
| Stjedne I Vest AS | Health & social care | 2025 |
| Stor Stas AS | Information & communication | 2019 |
| Storamyr Invest AS | Other services | 2008 |
| Storamyr Verkstedbygg AS | Real estate | 1989 |
| Ståle Frisør AS | Other services | 2012 |
| Subblab AS | Financial services | 2014 |
| Sundfør Naturstein AS | Construction | 2009 |
| Sveco Partners AS | Professional & scientific | 2021 |
| Svsl AS | | 2026 |
| Sydvest Invest AS | Real estate | 2001 |
| Syre Eiendom AS | Construction | 2024 |
| Syre Taxi AS | | 2025 |
| Syre Vannverk SA | Water & waste | 1956 |
| Syrebu AS | Professional & scientific | 2019 |
| Syrebu Invest AS | | 2025 |
| Syreveien Auto AS | Other services | 1990 |
| Syreveien Auto Bilsalg AS | Wholesale & retail | 2017 |
| Søragadå 4 Ans | Real estate | 1997 |
| Søragadå 73 AS | Real estate | 2019 |
| Sørhåland Barneskole AS | Education | 2011 |
| Søstrene Melhus AS | Wholesale & retail | 2021 |
| T Snørteland AS | Manufacturing | 1990 |
| Takst-Partner AS | Real estate | 2019 |
| Team G&E Maler Service AS | Construction | 2026 |
| Tereriks AS | Construction | 2022 |
| TJK AS | | 2024 |
| Tjøstheim Holding AS | | 2025 |
| Tmjo Invest AS | | 2021 |
| Torget 6 AS | Real estate | 2005 |
| Traal Holding AS | | 2007 |
| Uni Industry AS | Professional & scientific | 2023 |
| Uniengineering AS | Administrative & support | 2012 |
| Unisea AS | Information & communication | 1997 |
| Unisea Group AS | Information & communication | 2022 |
| Unisea Topco AS | | 2025 |
| Unni Manco AS | | 2026 |
| Unni Topco AS | Information & communication | 2022 |