| Fastighetsaktiebolaget Sydväst CVR 5563521797 | BoardBoard of Directors | Since 2022 | — | Active |
| Sinch Operator Software AB CVR 5563531333 | BoardBoard of Directors | Since 2025 | — | Active |
| mBlox Northern Europe AB CVR 5565876843 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Caleo Technologies AB CVR 5566270780 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Sydväst Holding Aktiebolag CVR 5566561105 | BoardBoard of Directors | Since 2022 | — | Active |
| Bostället i Trelleborg AB CVR 5567126320 | BoardBoard of Directors | Since 2022 | — | Active |
| CLX Networks Lund AB CVR 5567156418 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Digital Experience Consultants Sweden AB CVR 5567240469 | BoardBoard of Directors | Since 2022 | — | Active |
| Sinch Sweden AB CVR 5567475495 | BoardBoard of Directors | Since 2020 | — | Active |
| Cantaloupe AB CVR 5567985261 | BoardBoard of Directors | Since 2022 | — | Active |
| Sinch AB (publ) CVR 5568828908 | BoardBoard of Directors | Since 2020 | — | Active |
| Sinch Mobile AB CVR 5569695397 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Sydvästbocken 4 AB CVR 5590015680 | BoardBoard of Directors | Since 2022 | — | Active |
| Bygg & Entreprenad Sydväst AB CVR 5590108378 | BoardBoard of Directors | Since 2022 | — | Active |
| Sinch Holding AB CVR 5590612791 | BoardBoard of Directors | Since 2020 | — | Active |
| Sinch Incitament AB CVR 5590685441 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| SINCH LATIN AMERICA HOLDING AB CVR 5592125487 | BoardBoard of Directors | Since 2022 | — | Active |
| Mulhacen AB CVR 5592596117 | BoardBoard of Directors | Since 2020 | — | Active |
| CLZ AB CVR 5592938780 | BoardBoard of Directors | Since 2022 | — | Active |
| CBZ AB CVR 5593302499 | BoardBoard of Directors | Since 2022 | — | Active |
| Sydvästharen 32 AB CVR 5594024159 | BoardBoard of Directors | Since 2022 | — | Active |
| Kensington Investments AB CVR 5595726299 | BoardBoard of Directors | Since 2026 | — | Active |
| Sinch Latin America Management AB CVR 5595773515 | BoardBoard of Directors | Since 2026 | — | Active |