Board of directors announced the ex-dividend and ex-right day

July 4, 2005

Holtek today (July 4, 2005) announced the supplemental dividend information. Due to the additional outstanding shares issued from execution of employee stock options, the board of directors approved the revision of cash dividends for NT$2.513023 per common share and stock dividends for 49.960702 shares per thousand common shares, respectively. The both ex-dividend and ex-right day will be July 26, 2005, and the shareholders' register shall be closed for registration of share transfer from July 22 through July 26, 2005. To be entitled for the above-mentioned dividends, any person acquires Holtek's shares without being registered as a holder shall apply for the shareholders' registration with Chinatrust Transfer Agency by July 21, 2005. The cash dividends will be paid on August 16, 2005, and the stock dividends will be released and listed before end of September 2005.