| Company | Timeline | Status | |
| SPH Industrial Services Limited Director • Director | 28 Feb 2025←7 Months→Current | Active | |
| SPH Rail Limited Director • Director | 1 Dec 2023←1 Year 10 Months→Current | Active | |
| SPH Trade Shop Limited Director • Director | 1 Dec 2023←1 Year 10 Months→Current | Active | |
| SPH Farms Limited Director • Director | 27 Oct 2023←1 Year 12 Months→Current | Active | |
| TF4 Limited Director • Director | 1 Mar 2020←1 Year 9 Months→14 Dec 2021 | Dissolved | |
| Sommerfeld Flexboard Limited Director • Director | 6 Jan 2017←8 Years→Current | Active | |
| SPH Plant Ltd Director • Director | 3 Sep 2014←11 Years→Current | Active | |
