[Largan Precision] Supplementary Announcement: Board Resolution Regarding Convening of 115th Shareholder Meeting

1. Board Resolution Date: 2026/04/20 2. Shareholder Meeting Date: 2026/06/09 3. Shareholder Meeting Location: Nanshan Life Insurance Co., Ltd. Training Center, No. 300, Sec. 3, Chenggong Rd., Wuri Dist., Taichung City 4. Shareholder Meeting Method (Physical/Virtual/Hybrid): Physical Shareholder Meeting 5. Convening Purpose I: Report Items (1): 114年度 Business Report. (2): Audit Committee's Audit Report. (3): 114年度 Director and Employee Remuneration Distribution. (4): 114年度 Surplus Profit Distribution - Cash Dividend. (5): Execution Status Report of Company's Share Buyback. 6. Convening Purpose II: Approval Items (1): 114年度 Business Report and Financial Statements. (2): 114年度 Surplus Profit Distribution. 7. Convening Purpose III: Discussion Items (1): Proposal to amend certain articles of the "Company's Articles of Incorporation". (2): Proposal for the issuance of restricted employee stock options. 8. Provisional Motions: 9. Record Closing Start Date: 2026/04/11 10. Record Closing End Date: 2026/06/09 11. Other Matters to be Noted: None