【Macronix】Announcement of stock price fluctuation reaching the standard for public disclosure of attention-requiring trading information as notified by the Stock Exchange

1. Date of occurrence of the event: 115/04/29 2. Reason for occurrence: The company received a notification from the Stock Exchange at 14:00 today, stating that the company's securities have reached the standard for public disclosure of attention-requiring trading information. Therefore, in accordance with the instructions of the Stock Exchange, the following information is disclosed for investors' reference. 3. Financial and business information: Period Month Quarter ============== ==================================================== Most recent month Compared to last year Most recent quarter Compared to last year Item March 115 YoY change % Q1 115 YoY change % (Consolidated self-compiled) (Consolidated reviewed) ================ ==================================================== Operating Revenue 4,422 96% 10,469 71% (NT$ millions) Pre-tax Net Profit 1,420 893% 2,066 313% (NT$ millions) Net Profit attributable to owners of the parent 1,203 837% 1,776 303% (NT$ millions) Earnings Per Share 0.61 778% 0.90 291% (NT$)

Period Cumulative for the most recent four quarters ================ ===================== Item Q2 114 to Q1 115 (Consolidated audited/reviewed) ================ ===================== Operating Revenue 33,211 (NT$ millions) Pre-tax Net Profit (598) (NT$ millions) Net Profit attributable to owners of the parent (659) (NT$ millions) Earnings Per Share (0.41) (NT$) 4. Is there any material information listed in Article 4 of the "Taiwan Stock Exchange Corporation Procedures for Verification and Public Disclosure of Material Information of Listed Securities" (if "yes", please explain): No. 5. Is there any press conference for material information explanation listed in Article 11 of the "Taiwan Stock Exchange Corporation Procedures for Verification and Public Disclosure of Material Information of Listed Securities": No. 6. For complete financial information, please refer to the Market Observation System, paths are as follows: (1) Recent operating revenue and profit/loss information: Basic Information > Highlights (2) Historical monthly operating revenue: Operating Overview > Monthly Revenue > Monthly Operating Revenue Information after IFRSs adoption (3) Historical profit/loss (audited/reviewed by accountants): Financial Statements > After IFRSs adoption > Consolidated/Individual Statements > Comprehensive Income Statement (4) Historical profit/loss (voluntary disclosure of self-compiled figures): Operating Overview > Self-compiled Profit/Loss Announcement: Quarterly Report 7. Other matters that should be specified: None