| Authorized Director of Securities and Derivatives Business Operator PHILLIP ASSET MANAGEMENT CO.,LTD. | 29/11/2022 | |
| Authorized Director of Securities and Derivatives Business Operator PHILLIP SECURITIES (THAILAND) PUBLIC CO.,LTD. | 30/05/2022 | |
| Fundamental Investment Analyst on Securities | 01/01/2024 | 31/12/2025 |