Swei Investment Holding Announces Board Resolution on Treasury Share Cancellation and Capital Reduction Benchmark Date

Announcement Date: August 8, 2026 Statement Date: August 7, 2026 Statement Time: 16:44:25 Company Code: 3708 Company Name: Swei Investment Holding Subject: Announcement of the benchmark date for capital reduction via cancellation of treasury shares, as resolved by the company's board of directors. Applicable Clause: Item 11 Factual Date: August 7, 2026 Details: 1. Board Resolution Date: 08/07/2026 2. Reason for Capital Reduction: In accordance with Article 28-2 of the Securities and Exchange Act, the company will cancel shares repurchased in its 11th treasury stock acquisition. 3. Amount of Capital Reduction: NT$25,220,000 4. Number of Shares to be Eliminated: 2,522,000 shares 5. Capital Reduction Ratio: 2.74% 6. Capital After Reduction: NT$895,833,840 7. Scheduled Shareholders' Meeting Date: Not applicable 8. Expected Number of Listed Common Shares After Issuance of New Shares Post-Capital Reduction: Not applicable 9. Ratio of Listed Common Shares to Total Issued Common Shares After Capital Reduction (Listed Common Shares After Reduction / Total Issued Common Shares After Reduction): Not applicable 10. If the number of listed common shares after capital reduction is less than 60 million shares and less than 25%, explanation of measures for low equity liquidity: Not applicable 11. Capital Reduction Benchmark Date: 08/12/2026 12. Other Matters to be Disclosed: None