ChipMOS Technologies Inc. Share Repurchase Update

ChipMOS Technologies Inc. has announced the expiration and execution status of its share repurchase program. The company originally planned to repurchase 15,000,000 shares within the price range of NTD 16.80 to NTD 32.00, with a total monetary ceiling of NTD 16,214,828,000. The repurchase period was scheduled from September 3, 2025, to November 1, 2025. As of October 31, 2025, the company has repurchased 12,717,000 shares, amounting to NTD 365,222,801, with an average repurchase price of NTD 28.72 per share. The cumulative number of shares held by the company is now 21,822,000, representing 3.04% of the total issued shares. The company did not complete the full repurchase due to a phased strategy aimed at protecting shareholder interests and considering market mechanisms. The announcement was made after the market closed on the last trading day of the period, as the final day fell on a holiday.