| Assemblin El AB CVR 5560134628 | BoardBoard of Directors | 2020 – 2026 | — | Active |
| Assemblin VS AB CVR 5560536194 | BoardBoard of Directors | 2020 – 2024 | — | Active |
| Larmia Control Aktiebolag CVR 5561393132 | BoardBoard of Directors | 2021 – 2025 | — | Active |
| Botkyrka VVS & Fastighetsservice AB CVR 5564005808 | BoardBoard of Directors | 2020 – 2024 | — | Dissolved |
| Essen Rör Aktiebolag CVR 5564593431 | BoardBoard of Directors | 2020 – 2024 | — | Dissolved |
| EcoGuard AB CVR 5565025755 | BoardBoard of Directors | 2020 – 2025 | — | Active |
| J. Wretvall Rörservice AB CVR 5565480299 | BoardBoard of Directors | 2022 – 2024 | — | Active |
| Fidelix Sverige AB CVR 5565675716 | BoardBoard of Directors | 2021 – 2025 | — | Active |
| Assemblin Umeå Holding AB CVR 5565956090 | OtherExternal Signatory | 2022 – 2025 | — | Active |
| Vantec System AB CVR 5566050224 | BoardBoard of Directors | 2022 – 2024 | — | Active |
| Kalmar VVS- & El-Montage AB CVR 5566149166 | BoardBoard of Directors | 2021 – 2024 | — | Active |
| Tnevtvj AB CVR 5566802541 | BoardDeputy Board Member | 2024 – 2024 | — | Dissolved |
| Assemblin Ventilation AB CVR 5567289177 | BoardBoard of Directors | 2020 – 2026 | — | Active |
| Assemblin Caverion Sverige AB CVR 5567681530 | BoardBoard of Directors | 2020 – 2024 | — | Active |
| Lansen Systems AB CVR 5569014011 | BoardBoard of Directors | 2022 – 2026 | — | Active |
| El & Installationsteknik i Stockholm AB CVR 5569278061 | BoardBoard of Directors | 2021 – 2024 | — | Dissolved |
| SDC Stockholm Design & Construction AB CVR 5569806960 | BoardBoard of Directors | 2021 – 2024 | — | Dissolved |
| Assemblin AB CVR 5590202551 | BoardBoard of Directors | 2022 – 2024 | — | Dissolved |
| Assemblin Holding AB CVR 5590252952 | BoardBoard of Directors | 2022 – 2024 | — | Dissolved |
| Trignition 1 AB CVR 5590253026 | BoardBoard of Directors | 2022 – 2024 | — | Active |
| Assemblin Solar AB CVR 5590282900 | BoardBoard of Directors | 2022 – 2022 | — | Active |
| Assemblin Financing AB CVR 5590775952 | BoardBoard of Directors | 2021 – 2024 | — | Dissolved |
| BOSTADSRÄTTSFÖRENINGEN MORKULLAN NR 22 CVR 7164195625 | BoardDeputy Board Member | 2020 – 2020 | — | Active |
