TSMT: Announcement on behalf of the company's important subsidiaries regarding the board's resolution to distribute cash dividends

1. Date of Board of Directors resolution: 2026/05/08 2. Type and amount of dividends to be distributed: (1) The company's important subsidiary, Regent Manner Limited, resolved at its Board of Directors meeting on May 8, 2026, to distribute cash dividends of RMB 118,683,151.15 to its 100% owned parent company, Regent Manner (BVI) Limited. (2) The company's important subsidiary, Regent Manner (BVI) Limited, resolved at its Board of Directors meeting on May 8, 2026, to distribute cash dividends of RMB 118,683,151.15 to its 100% owned parent company, Junling International Holdings Limited. (3) The company's important subsidiary, Junling International Holdings Limited, resolved at its Board of Directors meeting on May 8, 2026, to distribute cash dividends of RMB 118,683,151.15 to its 100% owned parent company, Taiwan Surface Mounting Technology (B.V.I.) Co. Limited. (4) The company's important subsidiary, Taiwan Surface Mounting Technology (B.V.I.) Co. Limited, resolved at its Board of Directors meeting on May 8, 2026, to distribute cash dividends of RMB 118,683,151.15 to its 100% owned parent company, Taiwan Surface Mounting Technology Co., Ltd. 3. Other matters that should be specified: None.