| Fastum Teknik AB CVR 5566042080 | BoardBoard of Directors | Since 2021 | — | Dissolved |
| Åre Sportshop Labs AB CVR 5566451281 | BoardDeputy Board Member | Since 2022 | — | Active |
| BoVera Konsult AB CVR 5566487871 | BoardDeputy Board Member | Since 2020 | — | Dissolved |
| Arcada AB CVR 5566636873 | BoardDeputy Board Member | Since 2022 | — | Dissolved |
| WrapIt AB CVR 5566656897 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Åre Sportshop AB CVR 5566710868 | BoardBoard of Directors | Since 2022 | — | Active |
| Fjällfaravägen fastigheter AB CVR 5567299945 | BoardDeputy Board Member | Since 2022 | — | Active |
| Fastum Försäkringskonsult AB CVR 5567675151 | BoardDeputy Board Member | Since 2020 | — | Active |
| Pizzabolaget DD1 AB CVR 5567860647 | BoardDeputy Board Member | Since 2019 | — | Dissolved |
| Fastum Holding AB CVR 5568911191 | BoardBoard of Directors | Since 2020 | — | Active |
| Fastum Hypoteksförvaltning AB CVR 5569019812 | BoardDeputy Board Member | Since 2023 | — | Active |
| Quiculum AB CVR 5569030694 | BoardBoard of Directors | Since 2022 | — | Active |
| Fastum Finans AB CVR 5591265276 | BoardBoard of Directors | Since 2020 | — | Active |
| Blått Kol i Sverige AB CVR 5592274327 | BoardBoard of Directors | Since 2022 | — | Active |
| Fastumgruppen AB CVR 5592542665 | BoardBoard of Directors | Since 2020 | — | Active |
| Fastumgruppen Invest AB CVR 5592542673 | BoardBoard of Directors | Since 2020 | — | Active |
| Fastum Bostad AB CVR 5593079501 | BoardBoard of Directors | Since 2022 | — | Active |
| NBW Båg 1 AB CVR 5595026054 | BoardBoard of Directors | Since 2025 | — | Active |
| NBW Utveckling 2 AB CVR 5595026146 | BoardBoard of Directors | Since 2026 | — | Active |