| Authorized Director of Securities and Derivatives Business Operator DEFINIT INVESTMENT ADVISORY SECURITIES CO.,LTD. | 06/10/2023 | |
| Derivatives Investment Manager | 01/01/2025 | 31/12/2026 |
| Director of Securities Business Operator FINNOMENA MUTUAL FUND BROKERAGE SECURITIES CO.,LTD. | 03/02/2026 | |
| Fundamental Investment Analyst on Capital Market | 01/01/2026 | 31/12/2027 |