ChipMOS (NASDAQ: IMOS) board OKs NT$880m Tainan facility purchase

Rhea-AI Filing Summary

ChipMOS TECHNOLOGIES INC. reported that its board of directors approved the acquisition of a building and facilities in Tainan City, Taiwan, from INNOLUX Corporation. The property has a building area of 34,316.15 square meters, and the total transaction amount is NT$880 million.

The price was set through negotiation, using an appraisal report and market prices as references. A professional firm appraised the property at NT$851 million. The seller is not a related party, there were no brokers involved, and the acquisition is intended for company operation and production use.

Insights

Semiconductor real estate and capex analyst

ChipMOS is investing NT$880 million in a new Tainan facility for future operations.

ChipMOS is acquiring a building and facilities in Tainan with 34,316.15 square meters of space for NT$880 million. The stated purpose is operation and production, which indicates this property is meant to support ongoing or future manufacturing activities rather than financial investment.

The price was determined by negotiation, referencing an appraisal from China Real Estate Appraiser Firm at NT$851 million. The counterparty, INNOLUX Corporation, is explicitly described as having no related-party relationship, reducing governance and conflict-of-interest concerns. No broker or broker fee is involved, suggesting direct negotiations.

Board approval, supervisor or audit committee sign-off, and formal disclosure all occurred on 2026/03/10. Future company filings may clarify how quickly this facility is integrated into production, which will determine how the investment translates into capacity and revenue support over time.

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

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 March 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: March 10, 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 March 10, 2026.

Date of announcement: 2026/03/10

Subject: Announcement of the Company’s Board of Directors resolution for acquisition of building and facilities

Date of events: 2026/03/10

To which item it meets: Article 4, Paragraph 1, Item 20 of the Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information of Companies with Listed Securities

Statement:

1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Building and facilities (Located at No. 6, Sec. 2, Huandong Rd., Xinshi Dist., Tainan City)

2.Date of occurrence of the event: 2026/03/10~2026/03/10

3.Date of the board of directors resolution: 2026/03/10

4.Other approval date: Not applicable

5.Transaction unit amount (e.g. XX square meters, equivalent to XX ping), unit price, and total transaction price:

Building area: 34,316.15 square meters (equivalent to 10,380.64 ping)

Total transaction amount: NT$880 million

6.Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and furthermore is not a related party of the Company, the name of the trading counterparty is not required to be disclosed):

Trading counterpart: INNOLUX Corporation;

Relation with the Company: None

7.Where the trading counterparty is a related party, announcement shall also be made of the reason for choosing the related party as trading counterparty and the identity of the previous owner, its relationship with the Company and the trading counterparty, and the previous date and monetary amount of transfer: Not applicable

8.Where an owner of the underlying assets within the past five years has been a related party of the Company, the announcement shall also include the date and price of acquisition and disposal by the related party, and its relationship with the Company at the time of the transaction: Not applicable

9.Projected gain (or loss) through disposal (not applicable for acquisition of assets; those with deferral should provide a table explaining recognition): Not applicable

10.Terms of delivery or payment (including payment period and monetary amount), restrictive covenants in the contract, and other important terms and conditions: According to the contract

11.The manner of deciding on this transaction (such as invitation to tender, price comparison, or price negotiation), the reference basis for the decision on price, and the decision-making unit:

Manner of deciding on this transaction: Price negotiation;

Reference basis for the decision on price: Appraisal report and market price;

Decision-making unit: Board of Directors.

12.Name of the professional appraisal firm or company and its appraisal price:

China Real Estate Appraiser Firm/China Property Appraising Center CO., LTD.: appraisal value NT$851 million

13.Name of the professional appraiser:

China Real Estate Appraiser Firm/China Property Appraising Center CO., LTD.: Hsieh,Dian-Ching / Yang,Kuang-Wu

14.Practice certificate number of the professional appraiser:

China Real Estate Appraiser Firm: (99)TCG_NO.000149

15.The appraisal report has a limited price, specific price, or special price: No

16.An appraisal report has not yet been obtained: No

17.Reason for an appraisal report not being obtained: Not applicable

18.Reason for any significant discrepancy with the appraisal reports and opinion of the CPA: Not applicable

19.Name of the CPA firm: Not applicable

20.Name of the CPA: Not applicable

21.Practice certificate number of the CPA: Not applicable

22.Broker and broker’s fee: Not applicable

23.Concrete purpose or use of the acquisition or disposal: For operation and production

24.Any dissenting opinions of directors to the present transaction: None

25.Whether the counterparty of the current transaction is a related party: No

26.Date of ratification by supervisors or approval by the audit committee: 2026/3/10

27.The transaction is to acquire a real property or right-of-use asset from a related party: No

28.The price assessed in accordance with the Article 16 of the Regulations Governing the Acquisition and Disposal of Assets by Public Companies: Not applicable

29.Where the above assessed price is lower than the transaction price, the price assessed in accordance with the Article 17 of the same regulations: Not applicable

30.Date on which material information regarding the same event has been previously released: Not applicable

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

FAQ

What did ChipMOS (IMOS) announce regarding a new building acquisition?

ChipMOS announced board approval to acquire a building and facilities in Tainan City for NT$880 million. The property will be used for operation and production, adding 34,316.15 square meters of space to support its manufacturing footprint in Taiwan.

How much is ChipMOS (IMOS) paying for the Tainan facility and how large is it?

ChipMOS is paying a total of NT$880 million for the Tainan building and facilities. The building area is 34,316.15 square meters, equivalent to 10,380.64 ping, providing substantial additional space for its operations and production activities.

Who is ChipMOS (IMOS) buying the Tainan property from and is it a related party?

ChipMOS is buying the building and facilities from INNOLUX Corporation. The company states that INNOLUX has no related-party relationship with ChipMOS, which helps limit potential conflicts of interest and aligns with standard corporate governance expectations for such transactions.

How was the price for ChipMOS (IMOS) Tainan facility determined?

The price was determined through negotiation, using an appraisal report and market prices as references. A professional appraisal firm valued the property at NT$851 million, while the final agreed transaction amount is NT$880 million, approved by the board of directors.

What is the stated purpose of ChipMOS (IMOS) acquiring the Tainan building?

ChipMOS states the acquisition is for operation and production. This indicates the building and facilities are intended to support its core business activities, likely providing additional space for manufacturing processes or related operational functions in Taiwan.

When did ChipMOS (IMOS) approve the acquisition of the Tainan facility?

The board of directors approved the acquisition on 2026/03/10, the same date listed as the event occurrence and announcement. Supervisors or the audit committee also ratified the transaction on that date, confirming internal corporate approvals.