Edison Co. Announces Cash Reduction Benchmark Date

1. Board Resolution Date: NA 2. Capital Reduction Benchmark Date: 115/07/31 3. Plan for Issuing New Shares in Cash Reduction: The schedule and procedures for issuing new shares in this cash reduction will be announced separately upon finalization. 4. Benchmark Date for New Share Issuance: NA 5. Start Date of Share Transfer Suspension: NA 6. End Date of Share Transfer Suspension: NA 7. Rights and Obligations of New Shares after Reduction: Same as previously issued common shares. 8. Expected Listing Date of New Shares after Reduction: NA 9. Expected Number of Listed Common Shares after Reduction: 130,386,835 shares 10. Proportion of Listed Common Shares to Total Issued Common Shares after Reduction (Listed Shares / Total Issued Shares): 100% 11. If the post-reduction listed common shares are less than 60 million shares and less than 25%, explanation of measures for low share liquidity: NA 12. Other Matters to be Disclosed: (1) To adjust its capital structure and improve shareholder returns, the company has passed a resolution at the annual general meeting on May 28, 2026 (ROC 115) to conduct a cash capital reduction of NT$150,000,000, canceling 15,000,000 shares. This resolution has been officially filed and became effective upon notification from the Taiwan Stock Exchange on July 21, 2026 (ROC 115), under reference No. 1151802937. (2) The capital reduction benchmark date will be confirmed after the Ministry of Economic Affairs approves the change in registered capital. The company will then submit the capital reduction and share exchange plan to the Taiwan Stock Exchange for approval, and proceed with the share issuance process accordingly. (3) The schedule and procedures for issuing new shares in this capital reduction will be announced separately once finalized.