AG真人官方

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2025

Commission File Number 001-37928

ChipMOS TECHNOLOGIES INC.

(Translation of Registrant’s Name Into English)

No. 1, R&D Rd. 1, Hsinchu Science Park

Hsinchu, Taiwan

Republic of China

(Address of Principal Executive Offices)

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

Form 20-F ☒ Form 40-F ☐

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

English translation of Company’s August 4, 2025 filing with the Taiwan Stock Exchange Corporation’s (“TWSE”) Market Observation Post System (“MOPS”).

Date of announcement: August 4, 2025

Subject: The expected date of the Board of Directors Meeting for the Company’s second quarter of 2025 financial statements is August 12, 2025.

Date of events: August 4, 2025

To which item it meets: Article 4, Paragraph 1, Item 31 of the TWSE Procedures for Verification and Disclosure of Material Information of Companies with Listed Securities

Statement: