[6-K] CHIPMOS TECHNOLOGIES INC Current Report (Foreign Issuer)

Rhea-AI Filing Summary

ChipMOS TECHNOLOGIES INC. furnished a 6-K to share TWSE‑triggered disclosures, providing recent revenue, profit, and EPS figures for investor reference.

For September 2025, revenue was NT$2,087 million (YoY +10.5%), net profit before tax was NT$179 million (YoY +2,137.5%), profit attributable to owners of parent was NT$144 million (YoY +1,340.0%), and EPS was NT$0.20 (YoY +1,900.0%). For 2025Q3 (reviewed), revenue was NT$6,144 million (YoY +1.3%), net profit before tax NT$438 million (YoY +23.4%), profit attributable to owners of parent NT$352 million (YoY +17.7%), and EPS NT$0.50 (YoY +22.0%). The filing also lists recent four-quarter accumulation figures: revenue NT$22,812 million, profit attributable to owners of parent NT$227 million, and EPS NT$0.31.

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 November 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.

						ChipMOS TECHNOLOGIES INC.
						(Registrant)
Date: November 14, 2025				By		/S/ S. J. Cheng
				Name:		S. J. Cheng
				Title:		Chairman & President

Below is the English version of our filing at Market Observation Post System (MOPS) of Taiwan Stock Exchange Corporation (TWSE) on November 14, 2025.

Date of announcement: 2025/11/14

Subject: Because the Company’s securities reached the threshold for publication set by TWSE, Company discloses relevant financial information for investors’ reference.

Date of events: 2025/11/14

To which item it meets: Article 4, Paragraph 1, Item 51 of the Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information of Companies with Listed Securities

Statement:

1.Date of occurrence of the event: 2025/11/14

2.Cause of occurrence: The Company received notification from Taiwan Stock Exchange Co., Ltd.

3.Financial and business information:

Period		Month				Quarter				Recent 4 quarter accumulation
Account		Previous month September 2025 (unaudited)		YoY%		Previous quarter 2025Q3 (Review)		YoY%		2024Q4~2025Q3 (Audit/Review)
Revenue (NT$ million)		2,087		10.5%		6,144		1.3%		22,812
Net profit before tax (NT $million)		179		2,137.5%		438		23.4%		247
Profit attributable to owners of parent (NT$ million)		144		1,340.0%		352		17.7%		227
EPS (unit:NT$)		0.20		1,900.0%		0.50		22.0%		0.31

4.Any matters regarding to “Taiwan Stock Exchange Corporation Procedure for Verification and Disclosure of Material Information of Companies with Listed Securities” Article 4 that need to be specified: None

5.Any matters regarding to “Taiwan Stock Exchange Corporation Procedure for Verification and Disclosure of Material Information of Companies with Listed Securities” Article 11 that need to be specified: None

6.Please inquiry the items of financial Information on the website of MOPS, and the paths as follow:

(1)Current sales revenue/income(loss): Summaries>Financial Information applicable after adopting IFRSs

(2)Historic sales revenue per month: Operating Statements>Monthly Sales Revenue> Statement of Sales Revenue (after adopting IFRSs)

(3)Historic income or loss (audited/reviewed by the CPA): Financial Statements> FINANCIAL STATEMENT after adopting IFRSs>Balance Sheet/Income Statement

(4)Historic income or loss (self-assessed): Operating Statements>Self-assessed income or loss:

7.Any other matters that need to be specified: None

FAQ

What did ChipMOS (IMOS) disclose in this 6-K?

The company disclosed monthly, quarterly, and recent four-quarter accumulation financials after hitting a TWSE publication threshold.

What was ChipMOS (IMOS) revenue for September 2025?

Revenue was NT$2,087 million, a 10.5% year-over-year increase.

How did ChipMOS (IMOS) perform in Q3 2025?

For 2025Q3 (reviewed): revenue NT$6,144 million (YoY +1.3%), net profit before tax NT$438 million (YoY +23.4%), EPS NT$0.50 (YoY +22.0%).

What were September 2025 profitability metrics for IMOS?

Net profit before tax was NT$179 million (YoY +2,137.5%); profit attributable to owners of parent was NT$144 million (YoY +1,340.0%); EPS NT$0.20 (YoY +1,900.0%).

What are the recent four-quarter accumulation figures for IMOS?

Revenue NT$22,812 million, profit attributable to owners of parent NT$227 million, EPS NT$0.31.

Why did ChipMOS (IMOS) release this data now?

The TWSE notified the company that its securities reached the publication threshold, prompting disclosure for investor reference.