【Eastotech】Announcement of the Ex-Dividend Record Date

1. Date of resolution by board of directors, shareholders' meeting, or company decision: 115/05/11 2. Type of ex-rights/ex-dividend (please fill in 'Ex-rights', 'Ex-dividend', or 'Ex-rights and Ex-dividend'): Ex-dividend 3. Type and amount of ordinary share dividends: Cash dividend: NT$398,402,642, equivalent to NT$1.6 per share. 4. Ex-rights/Ex-dividend transaction date: 115/05/28 5. Last transfer date: 115/05/31 6. Start date of book closure: 115/06/01 7. End date of book closure: 115/06/05 8. Ex-dividend record date: 115/06/05 9. Last date for bond conversion application: Not applicable 10. Start date of bond conversion suspension: Not applicable 11. End date of bond conversion suspension: Not applicable 12. Cash dividend payment date for ordinary shares: 115/06/26 13. Other matters to be disclosed: As it falls on a holiday, the last transfer date is advanced to 115/05/29.