[Largan] Disclosure of Financial and Business Information as Stock Meets Attention-Drawing Criteria

1. Date of occurrence: 2026/05/18 2. Reason for occurrence: In accordance with a notice from the Taiwan Stock Exchange Corporation. 3. Financial and business information: Period Latest Month YoY Change % Latest Quarter YoY Change % Latest Four Quarters (April 2026) (Q1 2026) (Q2 2025 to Q1 2026) Item (IFRS Cons. (%) (IFRS Cons. (%) (IFRS Cons. Review) Unaudited) Review) =========== ============== =========== ================== =========== ================== Op. Revenue 5,362 24.48 15,544 6.62 62,113 (NT$M) Pre-tax Net 2,262 87.07 7,288 -5.55 25,472 Profit (NT$M) Net Profit 1,831 88.54 6,123 -4.97 20,955 (Parent) (NT$M) EPS (NT$) 13.95 91.88 46.63 -3.42 157.76 4. Is there any significant information as listed in Article 4 of the "Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information of Listed Companies": No 5. Is there a press conference regarding significant information as listed in Article 11 of the same procedures: No 6. For complete financial information, please refer to the Market Observation Post System. 7. Other matters to be specified: None