[OSE] Announcement Regarding Ex-Dividend Record Date for Preferred Shares

1. Date of resolution: 115/05/26. 2. Type of ex-rights/ex-dividend: Ex-dividend. 3. Type and amount of preferred stock dividends: Class C preferred stock dividend, NT$0.19219725 per share, total amount NT$15,602,573. 4. Ex-dividend trading date: 115/06/11. 5. Last transfer date: 115/06/13. 6. Start date of transfer suspension: 115/06/14. 7. End date of transfer suspension: 115/06/18. 8. Ex-dividend record date: 115/06/18. 9. Cash dividend payment date: 115/07/10. 10. Other: Dividends calculated based on actual days issued for 81,180,000 Class C preferred shares partially redeemed on Nov 13, 114.