ChipMOS TECHNOLOGIES Shareholders Approve Cash Dividend Of ~$1.11 Per ADS

ChipMOS TECHNOLOGIES INC. ("ChipMOS" or the "Company") (NASDAQ:IMOS), an industry leading provider of outsourced semiconductor assembly and test services ("OSAT"), announced shareholders approved a cash dividend distribution from earnings of NT$1.80 per common share or approximately US$1.11 per ADS. The dividend, which the Company's Board previously declared on February 22, 2024, was approved by shareholders at the Company's AGM on May 30, 2024. The Company has submitted a dividend/distribution form to Nasdaq, as notification of the below actions for the Company's American Depositary Shares ("ADRs").

• Type of Distribution: Cash Dividend
• Declaration Date: June 11, 2024
• Ex-Dividend Date: June 27, 2024
• ADR Dividend Record Date: June 27, 2024
• ADR Dividend Distribution Date: July 26, 2024
• ADR books will be closed from June 27 to July 5, 2024
• The final dividend amount to be distributed in U.S. dollars will be determined by the Depositary, Citibank, N.A., once it receives the distribution from the Company, which is expected to be on July 19, 2024, converts the amount from New Taiwan Dollars into U.S. Dollars and deducts appropriate taxes and fees.