ChipMOS (NASDAQ: IMOS) profit soars on November and Q3 2025 gains

Rhea-AI Filing Summary

ChipMOS TECHNOLOGIES INC. reported stronger recent results after its securities triggered a Taiwan Stock Exchange disclosure threshold. For November 2025, unaudited revenue was NT$2,140 million, up 16.6% year over year, with net profit before tax of NT$304 million, up 245.5%, and EPS of NT$0.37, up 270.0%. For the reviewed third quarter of 2025, revenue was NT$6,144 million, up 1.3% year over year, net profit before tax was NT$438 million, up 23.4%, and EPS was NT$0.50, up 22.0%. Over the audited/reviewed period from 2024 Q4 to 2025 Q3, revenue totaled NT$22,812 million, net profit before tax was NT$247 million, and EPS was NT$0.31.

Positive

• Strong profitability improvement: November 2025 net profit before tax rose 245.5% YoY to NT$304 million and EPS increased 270.0% to NT$0.37 on 16.6% higher revenue.
• Better earnings on modest sales growth: 2025Q3 net profit before tax grew 23.4% YoY to NT$438 million and EPS rose 22.0% to NT$0.50, while revenue increased 1.3% to NT$6,144 million.

Negative

• None.

Insights

Equity analyst – Asian semiconductor and packaging

ChipMOS shows sharply higher profit and EPS on modest revenue growth.

ChipMOS TECHNOLOGIES INC. disclosed key operating figures after meeting a Taiwan Stock Exchange publication threshold. November 2025 revenue reached NT$2,140 million, a 16.6% year-over-year increase, but profit expanded far faster, with net profit before tax of NT$304 million up 245.5% and EPS of NT$0.37 up 270.0%. This suggests a mix of stronger volumes or pricing and improved cost structure in that month.

For the reviewed quarter 2025Q3, revenue of NT$6,144 million grew a modest 1.3% year over year, while net profit before tax of NT$438 million increased 23.4% and EPS of NT$0.50 rose 22.0%. Profitability therefore improved even on relatively flat quarterly sales, which is generally favorable for margins. Over 2024Q4–2025Q3, revenue totaled NT$22,812 million with net profit before tax of NT$247 million and EPS of NT$0.31, giving investors an aggregated view of recent performance.

The disclosure is driven by exchange rules rather than a voluntary update, but the combination of strong November profitability and better quarterly earnings versus the prior year is directionally positive for ChipMOS’s recent operating trend.

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 January 2026

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: January 20, 2026				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 January 19, 2026.

Date of announcement: 2026/01/19

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: 2026/01/19

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: 2026/01/19

2.Cause of occurrence: The Company received notification from Taiwan Stock Exchange Corporation

3.Financial and business information:

Period		Month				Quarter				Recent 4 quarter accumulation
Account		Most recent month (November 2025) (unaudited)		YoY%		Most recent quarter (2025Q3) (Review)		YoY%		2024Q4~2025Q3 (Audit/Review)
Revenue (NT$ million)		2,140		16.6%		6,144		1.3%		22,812
Net profit before tax (NT$ million)		304		245.5%		438		23.4%		247
Profit attributable to owners of parent (NT$ million)		255		240.0%		352		17.7%		227
EPS (unit:NT$)		0.37		270.0%		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

Why did ChipMOS (IMOS) issue this January 2026 6-K?

ChipMOS filed this report because its securities reached a disclosure threshold set by the Taiwan Stock Exchange. In response, the company provided recent financial information for investors’ reference.

What revenue did ChipMOS (IMOS) report for November 2025?

For November 2025, ChipMOS reported unaudited revenue of NT$2,140 million, representing a 16.6% year-over-year increase.

How did ChipMOS (IMOS) profitability change in November 2025?

November 2025 net profit before tax was NT$304 million, up 245.5% year over year, and EPS was NT$0.37, up 270.0%.

What were ChipMOS (IMOS) results for the third quarter of 2025?

For 2025Q3 (reviewed), ChipMOS reported revenue of NT$6,144 million (up 1.3% year over year), net profit before tax of NT$438 million (up 23.4%), and EPS of NT$0.50 (up 22.0%).

What is ChipMOS (IMOS) revenue over 2024Q4 to 2025Q3?

Over the audited/reviewed period from 2024Q4 to 2025Q3, ChipMOS reported total revenue of NT$22,812 million, net profit before tax of NT$247 million, and EPS of NT$0.31.

Does the ChipMOS (IMOS) filing mention any special matters under TWSE Articles 4 or 11?

The disclosure states there are no additional matters that need to be specified under Article 4 or Article 11 of the Taiwan Stock Exchange procedures referenced.