BASIC Semiconductor Co., Ltd. (BASICSEMI) reported a share buyback on 9 October 2026, acquiring 24,400 H-shares on the Hong Kong Stock Exchange.

The repurchase was executed at prices ranging from HKD 38.60 to HKD 39.80 per share, resulting in a volume-weighted average cost of HKD 39.24 and an aggregate outlay of HKD 0.96 million.

Following the transaction: • Issued shares (excluding treasury shares) declined by 0.009 %, from 286.92 million to 286.89 million. • Treasury shares increased from 618,600 to 643,000. • Total issued shares remained unchanged at 287.53 million.

Under the shareholder mandate granted on 28 August 2026, BASICSEMI is authorised to repurchase up to 28.75 million shares. Cumulative repurchases now total 643,000 shares, representing 0.22 % of the company’s issued share base at the mandate date.

A 30-day moratorium on new share issues or treasury share disposals is in effect until 8 November 2026, in line with Hong Kong Stock Exchange regulations. The company confirmed all repurchase activities complied with Main Board Rule 10.06 and that no material changes have occurred to the explanatory statement filed on 11 August 2026.