ChipMOS Technologies Oct 2025 revenue NT$2,177.4M, up 22% YoY

ChipMOS Technologies reported unaudited October 2025 revenue of NT$2,177.4 million (US$70.8 million), up 22.0% year over year and 4.3% from September 2025.

Rhea-AI Filing Summary

ChipMOS Technologies reported unaudited October 2025 revenue of NT$2,177.4 million (US$70.8 million), up 22.0% year over year and 4.3% from September 2025. Management attributed the increase to robust demand for memory products supporting computing and datacenter applications and a favorable product mix.

The company noted that tariffs have not had a material impact year-to-date and it continues to monitor developments. Figures are presented using an exchange rate of NT$30.75 to US$1.00 as of October 31, 2025.

Insights

Semiconductor supply chain analyst

Monthly revenue rose on memory demand; sustainability depends on orders.

ChipMOS posted October revenue of NT$2,177.4 million (US$70.8 million), up 22.0% YoY and 4.3% MoM. The filing cites stronger memory demand for computing and datacenters and a favorable product mix, which can lift average selling prices and utilization.

Memory cycles can be volatile; continued growth typically hinges on downstream inventory and capex trends. The company states tariffs have not been material year-to-date, reducing a potential headwind if conditions persist.

Watch subsequent monthly updates and any commentary linked to datacenter demand and product mix to see if momentum extends beyond October.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What was ChipMOS (IMOS) revenue for October 2025?

Unaudited revenue was NT$2,177.4 million, or US$70.8 million.

How did ChipMOS October 2025 revenue change year over year?

Revenue increased 22.0% compared to October 2024.

What was the month-over-month change for October 2025?

Revenue rose 4.3% versus September 2025.

What drove ChipMOS’s October 2025 revenue growth?

The company cited robust memory demand for computing and datacenters and a favorable product mix.

Which exchange rate did ChipMOS use for US$ figures?

US$ figures used an exchange rate of NT$30.75 to US$1.00 as of October 31, 2025.

Did tariffs impact ChipMOS results year-to-date?

Tariffs have not had a material impact year-to-date, according to the company.

Are the October 2025 figures audited?

The company reported unaudited consolidated revenue for October 2025.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 6-K: How Foreign Companies Report to the SEC →

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Accepted by SEC EDGAR 11/10/2025 - 06:10 AM Learn about SEC filing dates

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 10, 2025				By		/S/ S. J. Cheng
				Name:		S. J. Cheng
				Title:		Chairman & President

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

ChipMOS REPORTS 22% YoY INCREASE IN OCTOBER 2025 REVENUE

Hsinchu, Taiwan, November 10, 2025 - ChipMOS TECHNOLOGIES INC. (“ChipMOS” or the “Company”) (Taiwan Stock Exchange: 8150 and Nasdaq: 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.

Consolidated Monthly Revenues (Unaudited)
	October 2025	September 2025	October 2024	MoM Change	YoY Change
Revenues    (NT$ million)	2,177.4	2,087.4	1,784.9	4.3%	22.0%
Revenues    (US$ million)	70.8	67.9	58.0	4.3%	22.0%

About ChipMOS TECHNOLOGIES INC.:

ChipMOS TECHNOLOGIES INC. (“ChipMOS” or the “Company”) (Taiwan Stock Exchange: 8150 and Nasdaq: 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.