[Systex] Announcement of Disposal of Securities

1. Name and nature of target: Taiwan Futures Exchange (TAIFEX) common stock. 2. Date of occurrence: 2025/6/20~2026/4/22 3. Board resolution date: April 22, 2026 4. Other decision dates: N/A 5. Volume, unit price, total amount: (1) 2025/6/20: 204,000 shares; NT$100/share; Total: NT$20,400 thousand. (2) 2026/4/22: 23,459,824 shares; NT$80.30/share; Total: NT$1,883,824 thousand. 6. Counterparty: (1) 2025/6/20: Chinese National Futures Association (No relation). (2) 2026/4/22: TWSE, TDCC, and TPEx (No relation). 7. Related party details: N/A. 8. Prior ownership by related party within 5 years: N/A. 9. Disposal of receivables details: N/A. 10. Gain/Loss on disposal: (1) 2025/6/20: Gain of NT$791 thousand. (2) 2026/4/22: Gain/Loss NT$0 (Carrying value was NT$1,883,824 thousand under fair value through P&L). 11. Terms of payment: Upon regulatory approval; adjustments if settled after ex-dividend date. 12. Pricing reference: CPA reasonableness opinion. Unit: Board. 13. Net worth per share: NT$52.26. 14. Cumulative holding: 0 shares, 0% ratio. 15. Ratio to total assets: 59.70%. Ratio to equity: 87.95%. Working capital: NT$360,687 thousand. 16. Broker: N/A. 17. Purpose: Asset activation and working capital. 18. Dissenting directors: None. 19. Related-party transaction: No. 20. Audit committee date: N/A. 21. Unreasonable CPA opinion: No. 22-24. CPA firm/name: Reanda CPAs, Wu Ming-Yi. 25. Business model change: No. 26-30. N/A or None.