[ASE Technology Holding] Subsidiary ASE Test to Acquire Right-of-Use Assets from ASE Semiconductor Manufacturing

1. Name and nature of target property: Lease of space at 6F, No. 2, Keji Rd., and 12F, No. 109, Neihuan N. Rd., Nanzi District, Kaohsiung City. 2. Date of event: May 25, 115. 3. Board resolution date: May 25, 115. 4. Other approval dates: Not applicable. 5. Transaction volume and price: Total building area approximately 13,586.02 sq. meters (approx. 4,109.77 pings). Monthly rent 2,629,348 TWD (excluding tax). Total right-of-use asset value estimated at 148,682,691 TWD (excluding tax). 6. Counterparty: ASE Semiconductor Manufacturing, a 100% parent of ASE Test. 7. Reason for related party transaction: Expansion of testing capacity. 8. Decision process: Determined based on market rental analysis by a professional appraisal firm, followed by board approval at ASE Test. 9. Appraisal firm: DTZ Cushman & Wakefield Appraisal Office (Appraiser: Hu Chun-chun). Valuation amount: 148,682,691 TWD (excluding tax). 10. Purpose: To expand testing capacity.