| Norrwatt Holding AB CVR 5594771510 | BoardBoard of Directors | Since 2024 | — | Active |
| NorrWatt Energy AB CVR 5594771528 | BoardBoard of Directors | Since 2024 | — | Active |
| Ekström Invest i Umeå AB CVR 5565825006 | BoardBoard of Directors | Since 2022 | — | Active |
| NorrWatt AB CVR 5593730434 | BoardBoard of Directors | Since 2024 | — | Active |
| Swesum AB CVR 5563186641 | BoardBoard of Directors | Since 2022 | — | Active |
| Vi är Ekström AB CVR 5591322895 | BoardBoard of Directors | Since 2022 | — | Active |
| STT System Aktiebolag CVR 5562016484 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Tyger & Tyger i Sverige Aktiebolag CVR 5564811593 | BoardBoard of Directors | Since 2023 | — | Dissolved |
| Resulterna AB CVR 5569848715 | BoardBoard of Directors | Since 2025 | — | Active |
| Ekström Industrifastigheter AB CVR 5565042040 | BoardBoard of Directors | Since 2026 | — | Active |
| NNJ Fastigheter AB CVR 5569294365 | BoardBoard of Directors | Since 2021 | — | Active |
| Heinestams Bolagstjänst Aktiebolag CVR 5564308970 | BoardBoard of Directors | Since 2022 | — | Active |
| Teletolk Integration Aktiebolag CVR 5561088468 | BoardBoard of Directors | Since 2023 | — | Dissolved |
| Handelsbolaget Wee Trotting CVR 9165932378 | OwnerOwner | Since 2022 | — | Active |
| infoMer i Umeå AB CVR 5566108105 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Heinestams Snabbavveckling AB CVR 5591249601 | BoardBoard of Directors | Since 2022 | — | Active |
| Ekström Energi och Miljö i Umeå AB CVR 5594276791 | BoardBoard of Directors | Since 2023 | — | Active |
| Ekström Fastigheter i Umeå AB CVR 5568722465 | BoardBoard of Directors | Since 2022 | — | Active |
| NorrWatt Energy Site 2 AB CVR 5595126664 | BoardBoard of Directors | Since 2025 | — | Active |
| Aschanska Villan i Umeå AB CVR 5568369523 | BoardBoard of Directors | Since 2022 | — | Active |
| Norrpack Holding AB CVR 5595428672 | BoardDeputy Board Member | Since 2025 | — | Active |
| Norrpack AB CVR 5592146590 | BoardDeputy Board Member | Since 2025 | — | Active |