# EDGAR Filing Document

**Accession Number:** 0001123134
**File Stem:** 0001193125-25-237851
**Filing Date:** 2025-10
**Character Count:** 3544
**Document Hash:** c44c475bdaf6c3e54c8508a6295e6dea
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-237851.hdr.sgml**: 20251014

**ACCESSION NUMBER**: 0001193125-25-237851

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251014

**FILED AS OF DATE**: 20251014

**DATE AS OF CHANGE**: 20251014

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CHIPMOS TECHNOLOGIES INC
- **CENTRAL INDEX KEY:** 0001123134
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** F5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37928
- **FILM NUMBER:** 251389227

**BUSINESS ADDRESS:**
- **STREET 1:** NO. 1, R & D ROAD 1
- **STREET 2:** HSINCHU SCIENCE PARK, HSINCHU
- **CITY:** TAIWAN
- **STATE:** F5
- **ZIP:** 00000
- **BUSINESS PHONE:** 866-3-5770055

**MAIL ADDRESS:**
- **STREET 1:** NO. 1, R & D ROAD 1
- **STREET 2:** HSINCHU SCIENCE PARK, HSINCHU
- **CITY:** TAIWAN
- **STATE:** F5
- **ZIP:** 00000

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**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, DC 20549**

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**FORM 6-K**

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**REPORT OF FOREIGN PRIVATE ISSUER**

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

**UNDER THE SECURITIES EXCHANGE ACT OF 1934**

**For the month of October 2025**

**Commission File Number 001-37928** 

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**ChipMOS TECHNOLOGIES INC.**

**(Translation of Registrant's Name Into English)**

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

**Hsinchu, Taiwan**

**Republic of China**

**(Address of Principal Executive Offices)**

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(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 ☐

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**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.

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

---

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English translation of Company's October 13, 2025 filing with the Taiwan Stock Exchange Corporation's ("TWSE")<br>Market Observation Post System ("MOPS").

**Date of announcement:** 2025/10/13

**Subject:** Announcement of the Company's cumulative value of shares repurchased amounts to NT$300 million

**Date of events:** 2025/10/13

**To which item it meets:** Article 4, Paragraph 1, Item 35 of the Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information of Companies with Listed Securities

**Statement:**

1. Date the cumulative number of shares currently repurchased accounted for 2 percent or more of the shares issued by the company, or amounted to NT$300 million or more: 2025/10/13

2. Number of shares currently repurchased (shares): 10,782,000

3. Type of shares currently repurchased: Common shares

4. Total monetary amount of shares currently repurchased (NTD): 304,901,359

5. Current average repurchase price per share (NTD): 28.28

6. Cumulative number of the company's own shares held during the repurchase period (shares): 19,887,000

7. Cumulative number of the company's own shares held during the repurchase period as a percentage of the total number of the company's issued shares: 2.77%

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

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