Taipei, Taiwan, R.O.C. – June 3rd, 2021 – ADATA today announced its consolidated net sales of NT$ 3.63 billion for May 2021, an increase of 39.26% year-over-year. Accumulated net sales for January to May 2021 were NT$ 16.33 billion, a 37.05% increase as compared to NT$11.92 billion for the same period in 2020. Due to strong demand for DRAM and NAND Flash used in laptops and servers drove the company’s sales sequential growth in May. ADATA expects the markets for remote-learning and work from home will continue to expand and high demand from 5G infrastructures and data-center equipment will drive memory prices hike in the third quarter. ADATA May Sales Report (Consolidated) (Unit: NT$ million) Period May-21 M-O-M Y-O-Y January to May Y-O-Y Net sales 3,633 0.86% 39.26% 16,332 37.05% Percentage of Sales by Products for May 2021: DRAM 47.1% SSD 39.38% Others 13.52% *Year 2021 figures have not been audited. Investor Relations Caroline Lin/IR Manager Tel:+886-2-8228-0886 ext.12410 Cell:+886-916-655-656 Mail: caroline_lin@adata.com Gloria Chen/ IR Director Tel:+886-2-8228-0886 ext.12400 Cell:+886-916-969-211 Mail: gloria_chen@adata.com