| Company | Timeline | Status | |
| Koh Ip Ltd Director • Unreported | 20 Nov 2025←1 Month→Current | Active | |
| Koh Software Ltd Director • Unreported | 20 Nov 2025←1 Month→Current | Active | |
| Koh Group Ltd Director • Unreported | 19 Nov 2025←1 Month→Current | Active | |
| E.D. Elson Limited Director • Company Director | 1 Sep 2020←5 Years→Current | Active | |
