| A Til Å AS | Real estate | 2018 |
| A-Å Elektro AS | Construction | 2009 |
| Agder Eiendom Gjerstad AS | Real estate | 1997 |
| Agh Engineering AS | Professional & scientific | 2017 |
| Agml Holding AS | | 2020 |
| Akontroll AS | Professional & scientific | 2018 |
| Bjordammen AS | Wholesale & retail | 2002 |
| Brekkes Murservice AS | Construction | 2006 |
| Brokeland Eiendom AS | Real estate | 1995 |
| Brokeland Holding AS | Wholesale & retail | 2016 |
| Brokelandsheia 20 AS | Real estate | 2020 |
| Brokelandsheia Handel AS | Real estate | 2026 |
| Brokelandsheia Matsenter AS | Wholesale & retail | 1996 |
| Brokelandsheia S11 AS | Real estate | 2025 |
| Brokelandsheia Servicesenter AS | Wholesale & retail | 1994 |
| Byggmester Trond Lindal AS | Construction | 2014 |
| Byholt AS | Real estate | 2013 |
| Bo-Bit A/S | Real estate | 1988 |
| Ceg Norway AS | Manufacturing | 1990 |
| Ceg Partners AS | | 2022 |
| Ceg Rental AS | Administrative & support | 2021 |
| Christian Aasbø AS | Wholesale & retail | 2014 |
| Cognivus AS | Information & communication | 2025 |
| Construction Equipment Group AS | Manufacturing | 2021 |
| Construction Equipment Group Holding AS | Manufacturing | 2021 |
| E 18 Interiør Tor Larsen Og Erik Bjørkenes Flåtlien Ans | Wholesale & retail | 1993 |
| Echa Holding AS | | 2025 |
| Eirik Haugholt Invest AS | Real estate | 2021 |
| Ettestøl Betong Og Forskaling AS | Construction | 2014 |
| Euro Engineering AS | Professional & scientific | 1998 |
| Floka AS | Information & communication | 2025 |
| Garnbuketten AS | Wholesale & retail | 2022 |
| Gjerstad Auto AS | Other services | 2019 |
| Gjerstad Eiendom AS | Real estate | 1996 |
| Gjerstad Hus Og Hyttebygg AS | Construction | 1997 |
| Gjerstad Og Vegårshei Bygdesørvis SA | Agriculture & fishing | 2004 |
| Gjerstad Products AB | Wholesale & retail | 2020 |
| Gjerstad Products SP. Z O.O. | Wholesale & retail | 2020 |
| Gjerstad Skogsdrift AS | Agriculture & fishing | 2024 |
| Gjerstad Tur & Taxi AS | Transport & logistics | 2001 |
| Graveservice Kragerø AS | Construction | 2014 |
| Gryting Consulting AS | Construction | 2013 |
| Gryting IT AS | Information & communication | 2005 |
| Gryting Sag AS | Manufacturing | 2024 |
| Gryting Trelast AS | Manufacturing | 1998 |
| H. Johnsen AS | Wholesale & retail | 2022 |
| Haa Holding AS | Real estate | 2016 |
| Hardworking AS | Professional & scientific | 2020 |
| Haugholt Holding AS | Real estate | 2017 |
| Haugholt Maskin AS | Administrative & support | 2018 |
| Haugstøyl Eiendom AS | Real estate | 1989 |
| Heia-Eiendom AS | Arts & recreation | 2013 |
| Heibergvegen Vegforening | Real estate | 1986 |
| Holte Og Røed Samdrift Ba | Real estate | 1995 |
| Holte Vilt- & Fiskelag SA | Other services | 1969 |
| Holteveien 62 Da | Agriculture & fishing | 2025 |
| Jentekulturen Da | Administrative & support | 2006 |
| Kia Eiendom AS | Construction | 1999 |
| Lunde Estates AS | Professional & scientific | 2016 |
| Lyngrillen AS | Hospitality | 2002 |
| Mayro Eiendom AS | Real estate | 2021 |
| Mayro Holding AS | Wholesale & retail | 2024 |
| Moe Gård Gjerstad AS | Agriculture & fishing | 2012 |
| Mostad Bil AS | Other services | 2017 |
| N. H. Reiersen Holding AS | | 2021 |
| NK Transport AS | Water & waste | 2020 |
| NM Brokelandsheia AS | Real estate | 2017 |
| NM Finans AS | Wholesale & retail | 2020 |
| NM Takst & Eiendom AS | Professional & scientific | 2023 |
| No Limit Events AS | Arts & recreation | 2005 |
| Norwegian Machinery AS | Wholesale & retail | 2017 |
| Norwegian Machinery Lease AS | Administrative & support | 2021 |
| Nosmoke Brokeland AS | Wholesale & retail | 2019 |
| Odd Henning Felle Tømmerhåndtering AS | Agriculture & fishing | 2019 |
| Odin Eiendom AS | Real estate | 2002 |
| Ohh Entertainment AS | Professional & scientific | 2017 |
| Opplev Tropisk AS | Arts & recreation | 2013 |
| Optimek AS | Manufacturing | 2016 |
| Optimek Eiendom AS | Real estate | 2013 |
| Optimek Holding AS | Manufacturing | 2016 |
| P G Eiendom AS | Real estate | 2006 |
| Picomed AS | Wholesale & retail | 1991 |
| Picomed Expo AS | Wholesale & retail | 2012 |
| PL Utvikling AS | Real estate | 2018 |
| Publiq AS | Administrative & support | 2013 |
| Publiq Management AS | Professional & scientific | 2021 |
| PVH AS | Wholesale & retail | 2017 |
| PVH Eiendom AS | Real estate | 2018 |
| PVH Invest AS | Wholesale & retail | 2018 |
| PVH Trading AS | Wholesale & retail | 2021 |
| På Tur Igjen AS | Wholesale & retail | 2025 |
| RA1 Anlegg AS | Construction | 2017 |
| Regnskog AS | Arts & recreation | 2013 |
| Rightdirection AS | Professional & scientific | 2017 |
| Rune Hagane AS | Other services | 2017 |
| Sagfører Pedersen AS | Manufacturing | 2023 |
| Salong Trix AS | Other services | 2012 |
| Salutogenesen AS | Health & social care | 2025 |
| Samvirkeforetaket Lyngåsveien | Real estate | 2002 |
| Shiny Bil & Båtpleie AS | Other services | 2017 |