[Topco] Announcement of Dividend Payout Ratio Adjustment

1. Date of Board or Shareholders' Meeting Resolution: NA

2. Original Dividend Type and Amount: Cash Dividend: TWD 290,084,934 (TWD 2.0 per share)

3. Revised Dividend Type and Amount: Cash Dividend: TWD 290,084,934 (TWD 1.97218527 per share)

4. Reason for Change: Due to the issuance of convertible bonds by the company, the number of outstanding shares eligible for distribution has changed, necessitating an adjustment in the dividend payout rate.

5. Other Matters to be Disclosed: Per the resolution of the company's annual shareholders' meeting held on May 26, 115, the chairman has been authorized to adjust the dividend payout rate.