| Saxin & Ankerstedt Elentreprenader AB CVR 5566806021 | BoardBoard of Directors | 2022 – 2023 | — | Active |
| TKBM Entreprenad AB CVR 5567038442 | BoardBoard of Directors | 2022 – 2024 | — | Active |
| NVBS Infra AB CVR 5568971542 | BoardBoard of Directors | 2020 – 2023 | — | Active |
| Svenska Mätteknikgruppen AB CVR 5569243545 | BoardBoard of Directors | 2022 – 2024 | — | Active |
| Elektrosignal Invest Sthlm AB CVR 5590100045 | BoardBoard of Directors | 2022 – 2024 | — | Active |
| Elektrosignal Infra Sthlm AB CVR 5590100052 | BoardBoard of Directors | 2023 – 2024 | — | Active |
| NVBS Projekt AB CVR 5590323621 | BoardBoard of Directors | 2020 – 2023 | — | Active |
| Industria i Norden AB CVR 5590529433 | BoardBoard of Directors | 2020 – 2024 | — | Active |
| NVBS Anläggning AB CVR 5590840061 | BoardBoard of Directors | 2022 – 2023 | — | Active |
| Nordia EWP AB CVR 5591141014 | BoardBoard of Directors | 2022 – 2023 | — | Active |
| Infra Produkter Sthlm AB CVR 5591743801 | BoardBoard of Directors | 2022 – 2024 | — | Active |
| Infra El Sthlm AB CVR 5591747547 | BoardBoard of Directors | 2022 – 2023 | — | Dissolved |
| NVBS Rail AB CVR 5592478316 | BoardBoard of Directors | 2021 – 2024 | — | Active |
