| Mastec AB CVR 5561912568 | ManagementChief Executive Officer | Since 2022 | — | Active |
| Mastec Fastigheter i Dalstorp AB CVR 5561933390 | BoardBoard of Directors | Since 2022 | — | Active |
| Mastec Plastema AB CVR 5562384148 | BoardBoard of Directors | Since 2021 | — | Active |
| Mastec Fastigheter i Ulricehamn AB CVR 5562771740 | BoardBoard of Directors | Since 2022 | — | Active |
| Mastec Precision AB CVR 5565118139 | BoardBoard of Directors | Since 2022 | — | Active |
| CCTech Aktiebolag CVR 5565459210 | BoardBoard of Directors | Since 2022 | — | Active |
| Mastec Fastigheter i Skillingaryd AB CVR 5567475404 | ManagementChief Executive Officer | Since 2024 | — | Active |
| Mastec Fastigheter i Vaggeryd AB CVR 5568220122 | ManagementChief Executive Officer | Since 2024 | — | Active |
| Mastec Fastigheter Svarven AB CVR 5592162563 | BoardBoard of Directors | Since 2021 | — | Active |
| Mastec Solutions AB CVR 5592830987 | BoardBoard of Directors | Since 2022 | — | Active |
| Mastec Components AB CVR 5593048977 | BoardBoard of Directors | Since 2022 | — | Active |
| Kattorp Gård CVR 7606254030 | OtherStakeholder | Since 2008 | — | Active |