【DYAC】Announcement of Ex-Dividend Record Date Matters

1. Date of Board or Shareholders' Meeting Resolution, or Company Decision: 115/06/12 2. Type of Ex-Rights or Ex-Dividend: Ex-Dividend 3. Ordinary Share Cash Dividend Type and Amount: NT$81,718,046 4. Ex-Dividend Trading Day: 115/06/30 5. Last Transfer Date: 115/07/01 6. Start Date of Transfer Suspension: 115/07/02 7. End Date of Transfer Suspension: 115/07/06 8. Ex-Dividend Record Date: 115/07/06 9. Final Application Date for Bond Conversion: 115/06/08 10. Start Date of Bond Conversion Suspension: 115/06/10 11. End Date of Bond Conversion Suspension: 115/07/06 12. Ordinary Share Cash Dividend Payment Date: 115/07/20 13. Other Matters to be Disclosed: None