First Financial Bank of America Announces Change in Chief Financial Officer

1. Position Affected (Please specify: Spokesperson, Acting Spokesperson, Key Operational Executive (e.g., CEO, COO, CMO, CSO), Financial Officer, Accounting Officer, Corporate Governance Officer, Chief Information Security Officer, R&D Head, Internal Audit Head, or Litigation/Non-litigation Representative): Financial Officer

2. Date of Change: September 2, 2026

3. Former Officer's Name, Title, and Background: Yu-Shu Cheng (Executive Secretary and Chief Financial Officer of First Financial Bank of America)

4. New Officer's Name, Title, and Background: Shu-Ching Chang (Researcher at Los Angeles Branch)

5. Nature of Change (Please select from: Resignation, Job Reassignment, Dismissal, Retirement, Death, New Appointment, or Removal): Job Reassignment

6. Reason for Change: Job Reassignment

7. Effective Date: September 2, 2026

8. Additional Disclosures: None