HSINCHU, Taiwan, July 29, 2025 – ChipMOS TECHNOLOGIES INC. (“ChipMOS” or the “Company”) (Taiwan Stock Exchange: 8150; Nasdaq: IMOS), a leading provider of outsourced semiconductor assembly and test (OSAT) services, today announced it will release its second quarter 2025 financial results and host a conference call on Tuesday, August 12, 2025, following the close of trading on the Taiwan Stock Exchange.

Investors and analysts are encouraged to participate in the conference call using the dial-in details provided below. A webcast and replay of the call will be accessible on the Company’s website.

Date: Tuesday, August 12, 2025
Time: 3:00 PM Taiwan (3:00 AM New York)
Dial-In: +886-2-3396 1191
Password: 3300012 #

Webcast and Replay: https://www.chipmos.com/chinese/ir/info2.aspx
Replay: Will be available approximately 2 hours after the live call concludes

Language: Mandarin

Note: To ensure transparency and facilitate a clearer understanding of the Company’s financial results and operating environment, an English transcript will be made available on the Company’s website subsequent to the conference call.

Contacts:

In Taiwan
Jesse Huang
ChipMOS TECHNOLOGIES INC.
+886-6-5052388 ext. 7715
IR@chipmos.com
In the U.S.
David Pasquale
Global IR Partners
+1-914-337-8801
dpasquale@globalirpartners.com