| Company | Timeline | Status | |
| HJC Ostrea Limited Director • Unreported | 1 Dec 2025←20 Days→Current | Active | |
| HJC Ostrea Beheer Limited Director • Unreported | 1 Dec 2025←20 Days→Current | Active | |
| Quaedvlieg Juristen Limited Director • Unreported | 10 Dec 2024←1 Year→Current | Active | |
| Roda Holding Limited Director • Manager | 17 Jan 2024←1 Year 11 Months→Current | Active | |
| Ostrea Pay Limited Director • Manager | 2 Oct 2023←2 Years 1 Month→18 Nov 2025 | Dissolved | |
| Meliora Madiz Associates Limited Director • Lawyer | 2 Sep 2022←3 Years→Current | Active | |
| Ostrea Associates Limited Director • Manager | 26 Nov 2020←3 Years→16 Jul 2024 | Dissolved | |
| Ostrea Consult Limited Director • Manager | 11 Aug 2020←5 Years→Current | Active | |
| Ostrea Assets Limited Director • Manager | 1 Nov 2019←6 Years→Current | Active | |
Hythe Participations Limited Director • Manager | 1 Sep 2017←2 Years 2 Months→19 Nov 2019 | Dissolved | |
