【First Financial Holding】Announcement of the Company and its Major Subsidiaries' Self-Audited Consolidated Earnings for March 2026

1.Date of occurrence of the event: 2026/04/14 2.Company name: First Financial Holding Co., Ltd. 3.Relationship with the company (please enter "the company" or "subsidiary"): The company 4.Mutually held shares percentage: 100% 5.Cause of occurrence: Same as subject 6.Countermeasures: None 7.Other matters that need to be specified (If the subject of the event or resolution is a public company or above, this material information also complies with Article 7, Paragraph 9 of the Enforcement Rules of the Securities Exchange Act regarding matters that have a significant impact on shareholders' equity or securities prices): -------------Monthly Self-Audited Earnings Cumulative Self-Audited Earnings Cumulative EPS ------------- Pre-tax After-tax Pre-tax After-tax After-tax Unit (NT$100M) (NT$100M) (NT$100M) (NT$100M) (NT$) -------------------------------------------------------------- First Financial Holding 32.28 27.11 100.36 82.44 0.57 First Bank 31.85 26.92 92.19 75.73 0.62 First Securities 1.43 1.19 6.10 5.11 0.76 First Life Insurance 0.11 0.02 1.90 1.53 0.22 -------------------------------------------------------------

Note: Cumulative EPS (NT$) for Jan-Mar, excluding foreign exchange fluctuation reserve: First Financial Holding: 0.58 First Life Insurance: 0.44