Sotech Announces Adjustment to Cash Dividend Payout Ratio

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

2. Original Dividend Type and Amount: Cash dividend of NT$941,660,490 for common shares, with NT$10 per share distributed.

3. Revised Dividend Type and Amount: Cash dividend of NT$941,660,490 for common shares, with NT$9.93710562 per share distributed.

4. Reason for Change: Due to the issuance of restricted employee stock and the cancellation of unvested shares, the number of outstanding shares has changed, necessitating an adjustment to the per-share dividend amount.

5. Other Matters to be Disclosed: Based on the resolution passed at the board meeting held on March 10, Year 115 (2026), the Chairman has been authorized to adjust the dividend payout ratio.