| Proton Finishing Eskilstuna AB CVR 5560412388 | BoardBoard of Directors | 2021 – 2023 | — | Active |
| Proton Lighting AB CVR 5560486325 | BoardBoard of Directors | 2023 – 2023 | — | Active |
| Proton Finishing Anderstorp Stans 8 AB CVR 5560788589 | ManagementChief Executive Officer | 2021 – 2022 | — | Active |
| Proton Finishing Markaryd AB CVR 5561921270 | BoardBoard of Directors | 2020 – 2021 | — | Dissolved |
| Proton Finishing Forsheda AB CVR 5562277268 | ManagementChief Executive Officer | 2021 – 2022 | — | Active |
| Proton Finishing Hillerstorp AB CVR 5563633972 | BoardBoard of Directors | 2021 – 2023 | — | Active |
| Proton Finishing Anderstorp AB CVR 5564174513 | ManagementChief Executive Officer | 2021 – 2022 | — | Active |
| Proton Finishing AB CVR 5564174539 | BoardBoard of Directors | 2021 – 2023 | — | Active |
| Proton Finishing Anderstorp Stans 1 AB CVR 5564505021 | BoardBoard of Directors | 2021 – 2023 | — | Active |
| Per Ekholm Management AB CVR 5569944548 | BoardBoard of Directors | 2022 – 2024 | — | Dissolved |
| JOSS Holding AB CVR 5592887227 | BoardDeputy Board Member | 2022 – 2025 | — | Active |
| Nordic Coating Association, ek. för. CVR 7164446275 | BoardBoard of Directors | 2022 – 2023 | — | Active |
