ChipMOS REPORTS 22% YoY INCREASE IN OCTOBER 2025 REVENUE

HSINCHU, Nov. 10, 2025 /PRNewswire-FirstCall/ -- ChipMOS TECHNOLOGIES INC. ("ChipMOS" or the "Company") (Taiwan Stock Exchange: 8150 andNasdaq: IMOS), an industry leading provider of outsourced semiconductor assembly and test services ("OSAT"), today reported its unaudited consolidated revenue for the month of October 2025. All U.S. dollar figures cited in this press release are based on the exchange rate of NT$30.75 to US$1.00 as of October 31, 2025.

Revenue for the month of October 2025 was NT$2,177.4 million or US$70.8 million, representing an increase of 4.3% from September 2025, and an increase of 22.0% from October 2024.  The Company's strong growth in October revenue was led by robust demand for memory products in support of computing and datacenters, combined with a favorable product mix. While tariffs have not had a material impact year-to-date, the Company continues to monitor developments and will adjust as needed to best support customers.

About ChipMOS TECHNOLOGIES INC.:

ChipMOS TECHNOLOGIES INC. ("ChipMOS" or the "Company") (Taiwan Stock Exchange: 8150 andNasdaq: IMOS) (www.chipmos.com) is an industry leading provider of outsourced semiconductor assembly and test services. With advanced facilities in Hsinchu Science Park, Hsinchu Industrial Park and Southern Taiwan Science Park in Taiwan, ChipMOS is known for its track record of excellence and history of innovation. The Company provides end-to-end assembly and test services to leading fabless semiconductor companies, integrated device manufacturers and independent semiconductor foundries serving virtually all end markets worldwide. 

Forward-Looking Statements:

This press release may contain certain forward-looking statements. These forward-looking statements may be identified by words such as 'believes,' 'expects,' 'anticipates,' 'projects,' 'intends,' 'should,' 'seeks,' 'estimates,' 'future' or similar expressions or by discussion of, among other things, strategies, goals, plans or intentions. These statements may include financial projections and estimates and their underlying assumptions, statements regarding current macroeconomic conditions, including the impacts of high inflation, foreign exchange rates and risk of recession, on demand for our products, consumer confidence and financial markets generally; changes in trade regulations, policies, and agreements and the imposition of tariffs that affect our products or operations, including potential new tariffs that may be imposed and our ability to mitigate with respect to future operations, products and services, and statements regarding future performance. Actual results may differ materially in the future from those reflected in forward-looking statements contained in this document, based on a number of important factors and risks, which are more specifically identified in the Company's most recent U.S. Securities and Exchange Commission (the "SEC") filings. Further information regarding these risks, uncertainties and other factors are included in the Company's most recent Annual Report on Form 20-F filed with the SEC and in its other filings with the SEC.

Contacts:

SOURCE ChipMOS TECHNOLOGIES INC.