| Company | Timeline | Status | |
| Penstone Technology Limited Director • Director | 4 Jun 2024←1 Year 1 Month→15 Jul 2025 | Dissolved | |
Penstone Technology Limited Director • Director | 16 Mar 2016←3 Years→2 Apr 2019 | Dissolved | |
| Penstone Communications Limited Director • Engineer | 30 Sep 2004←21 Years→Current | Active | |
| Penstone Communications Limited Director • Engineer | 30 Sep 2004←20 Years→4 Apr 2025 | Active | |
