| Södergren & Flink Fastigheter AB CVR 5563530491 | BoardDeputy Board Member | Since 2022 | — | Active |
| MARK Redovisarna AB CVR 5564623642 | ManagementChief Executive Officer | Since 2024 | — | Active |
| Fastighetsskötsel Enköping AB CVR 5566352521 | ManagementChief Executive Officer | Since 2025 | — | Active |
| Castanove Förvaltning AB CVR 5567632988 | ManagementChief Executive Officer | Since 2024 | — | Dissolved |
| MARK Fastighet Mälardalen AB CVR 5567888960 | ManagementChief Executive Officer | Since 2024 | — | Active |
| MARK Entreprenad Mälardalen AB CVR 5567889182 | BoardBoard of Directors | Since 2022 | — | Active |
| Caros i Västerås AB CVR 5568701667 | ManagementChief Executive Officer | Since 2024 | — | Active |
| DOdesign AB CVR 5568848476 | BoardDeputy Board Member | Since 2022 | — | Active |
| Städhem i Köping AB CVR 5569151961 | BoardBoard of Directors | Since 2020 | — | Active |
| Städhem i Västerås AB CVR 5569512840 | BoardBoard of Directors | Since 2020 | — | Active |
| Elfast Förvaltning AB CVR 5569662306 | ManagementChief Executive Officer | Since 2026 | — | Active |
| Mälarsmide AB CVR 5569769861 | BoardBoard of Directors | Since 2022 | — | Active |
| MARK Kv. Högspänningen AB CVR 5569999245 | BoardBoard of Directors | Since 2022 | — | Active |
| Städhem i Eskilstuna AB CVR 5590713029 | BoardBoard of Directors | Since 2021 | — | Active |
| Städhem Invest AB CVR 5590897335 | BoardBoard of Directors | Since 2020 | — | Active |
| Mälarkonstruktion AB CVR 5591244792 | BoardBoard of Directors | Since 2022 | — | Active |
| MARK Södergren & Flink AB CVR 5591926224 | BoardDeputy Board Member | Since 2022 | — | Active |
| Coleum Invest AB CVR 5591947378 | BoardBoard of Directors | Since 2022 | — | Active |
| Coleum Holding AB CVR 5591947386 | BoardBoard of Directors | Since 2022 | — | Active |
| MARK 1989 AB CVR 5592023054 | BoardBoard of Directors | Since 2022 | — | Active |
| Pernell Invest AB CVR 5594613902 | BoardBoard of Directors | Since 2023 | — | Active |
| Elektroden 3 i Västerås AB CVR 5595530634 | BoardDeputy Board Member | Since 2025 | — | Active |
| Magnetfältet 4 i Västerås AB CVR 5595693572 | BoardDeputy Board Member | Since 2026 | — | Active |
| Coleum Property AB CVR 5595700203 | BoardBoard of Directors | Since 2026 | — | Active |