IMOS / ChipMOS TECHNOLOGIES INC. - Depositary Receipt (Common Stock) - Документы SEC, Годовой отчет, Доверенное заявление

ChipMOS TECHNOLOGIES INC. - Депозитарные расписки (обыкновенные акции)
US ˙ NasdaqGS ˙ US16965P2020

Основная статистика
CIK 1123134
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to ChipMOS TECHNOLOGIES INC. - Depositary Receipt (Common Stock)
SEC Filings (Chronological Order)
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September 2, 2025 6-K

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 September 2025 Commission File Number 001-379

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 September 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 2, 2025 EX-99.1

ChipMOS ANNOUNCES NT$480 MILLION SHARE REPURCHASE PROGRAM

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS ANNOUNCES NT$480 MILLION SHARE REPURCHASE PROGRAM Hsinchu, Taiwan, September 2, 2025 - ChipMOS TECHNOLOGIES INC. (“ChipMOS” or the “Company”) (Taiwan Stock Exchange: 8150 and Nasdaq: IMOS)

August 12, 2025 6-K

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 August 2025 Commission File Number 001-37928

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 August 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 12, 2025 6-K

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 August 2025 Commission File Number 001-37928

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 August 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 12, 2025 EX-99.1

ChipMOS REPORTS SECOND QUARTER 2025 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS SECOND QUARTER 2025 RESULTS • 2Q25 Revenue Grew 3.7% Compared to 1Q25 • 6.6% 2Q25 Gross Margin Compared to 9.4% in 1Q25 • Overall Utilization Rate Increased to 65% from 62% in 1Q25

August 12, 2025 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

August 2025 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 2Q25 Results Conference Exhibit 99.

August 8, 2025 6-K

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 August 2025 Commission File Number 001-37928

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 August 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 4, 2025 6-K

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 August 2025 Commission File Number 001-37928

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 August 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 29, 2025 6-K

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 July 2025 Commission File Number 001-37928 Ch

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 July 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 21, 2025 6-K

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 July 2025 Commission File Number 001-37928 Ch

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 July 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 14, 2025 6-K

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 July 2025 Commission File Number 001-37928 Ch

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 July 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 10, 2025 6-K

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 July 2025 Commission File Number 001-37928 Ch

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 July 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 13, 2025 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number 001-37928

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 13, 2025 EX-99.1

ChipMOS ADJUSTS CASH DIVIDEND DISTRIBUTION RATIO TO APPROXIMATELY NT$1.23 PER COMMON SHARE OR APPROXIMATELY US$0.82 PER ADS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS ADJUSTS CASH DIVIDEND DISTRIBUTION RATIO TO APPROXIMATELY NT$1.23 PER COMMON SHARE OR APPROXIMATELY US$0.82 PER ADS Hsinchu, Taiwan, June 13, 2025 - ChipMOS TECHNOLOGIES INC. (“ChipMOS” or

June 12, 2025 6-K

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 June 2025 Commission File Number 001-37928 Ch

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 June 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 12, 2025 6-K

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 June 2025 Commission File Number 001-37928 Ch

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 June 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 10, 2025 6-K

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 June 2025 Commission File Number 001-37928 Ch

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 June 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 28, 2025 6-K

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 May 2025 Commission File Number 001-37928 Chi

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 May 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 27, 2025 6-K

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 May 2025 Commission File Number 001-37928 Chi

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 May 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 27, 2025 6-K

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 May 2025 Commission File Number 001-37928 Chi

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 May 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 22, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name into English)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT 南茂科技股份有限公司 (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name into English) Taiwan, Republic of China 001-37928 (State or other jurisdiction of incorporation or organization) (Commission File Number) (I.R.S. Employer Identific

May 13, 2025 EX-99.1

ChipMOS REPORTS FIRST QUARTER 2025 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FIRST QUARTER 2025 RESULTS • 1Q25 Revenue Grows QoQ and YoY • Net Earnings of NT$0.24 per Basic Common Share or US$0.15 per Basic ADS Compared to Net Earnings of NT$0.32 per Basic

May 13, 2025 EX-99.1

ChipMOS ANNOUNCES NT$525 MILLION SHARE REPURCHASE PROGRAM

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS ANNOUNCES NT$525 MILLION SHARE REPURCHASE PROGRAM Hsinchu, Taiwan, May 13, 2025 - ChipMOS TECHNOLOGIES INC. (“ChipMOS” or the “Company”) (Taiwan Stock Exchange: 8150 and Nasdaq: IMOS), an

May 13, 2025 6-K

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 May, 2025 Commission File Number 001-37928 Ch

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 May, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 13, 2025 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

May 2025 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 1Q25 Results Conference Exhibit 99.

May 13, 2025 6-K

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 May, 2025 Commission File Number 001-37928 Ch

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 May, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 9, 2025 6-K

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 May, 2025 Commission File Number 001-37928 Ch

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 May, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 5, 2025 6-K

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 May, 2025 Commission File Number 001-37928 Ch

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 May, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 29, 2025 6-K

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 April, 2025 Commission File Number 001-37928

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 April, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 25, 2025 EX-99.2

Exhibit 99.2 Proposals The Company has informed the Depositary that its Board of Directors recommends a "FOR" vote for all proposals.

Exhibit 99.2 2025 Annual Shareholders’ Meeting The Voting Instructions must be signed, completed and received at the indicated address prior to 10:00 A.M. (New York City time) on May 19, 2025 for action to be taken. 2025 VOTING INSTRUCTIONS AMERICAN DEPOSITARY SHARES ChipMOS TECHNOLOGIES INC. (the “Company”) ADS CUSIP No.: 16965P202.* ADS Record Date: March 28, 2025. Meeting Specifics: 2025 Annual

April 25, 2025 EX-99.1

Time Sensitive

Exhibit 99.1 Time Sensitive Materials Depositary’s Notice of 2025 Annual Shareholders’ Meeting of ChipMOS TECHNOLOGIES INC. ADSs: American Depositary Shares evidenced by American Depositary Receipts (“ADRs”). ADS CUSIP No.: 16965P202.* ADS Record Date: March 28, 2025. Meeting Specifics: 2025 Annual Shareholders’ Meeting - May 27, 2025 at 9:00 A.M. (local time) at the Hsinchu Science Park Life Hub,

April 25, 2025 EX-99.4

Table of Contents Audit Committee’s Review Report ChipMOS TECHNOLOGIES INC.

Exhibit 99.4 Table of Contents A. Meeting Procedure 1 B. Meeting Agenda 2 I. Chairman’s Opening Remarks 3 II. Report Items 3 III. Matters for Ratification 4 IV. Matters for Discussion 5 V. Extemporary Motions 5 C. Attachments 1. Business Report 6 2. Audit Committee’s Review Report 9 3. Report of Independent Accountants and Financial Statements 10 4. Earnings Distribution Table 30 5. Comparison Tab

April 25, 2025 6-K

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 April, 2025 Commission File Number 001-37928

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 April, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 25, 2025 EX-99.3

Meeting Notice for Annual Shareholders’ Meeting (Summary Translation)

Exhibit 99.3 Meeting Notice for Annual Shareholders’ Meeting (Summary Translation) (This English translation is prepared in accordance with the Chinese version and is for reference purposes only. If there are any inconsistency between the Chinese original and this translation, the Chinese version shall prevail.) The 2025 Annual Shareholders’ Meeting (the “Meeting”) of ChipMOS TECHNOLOGIES INC. (th

April 15, 2025 EX-12.2

CERTIFICATIONS

Exhibit 12.2 CERTIFICATIONS I, Silvia Su, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect

April 15, 2025 6-K

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 April, 2025 Commission File Number 001-37928

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 April, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 15, 2025 EX-12.1

CERTIFICATIONS

Exhibit 12.1 CERTIFICATIONS I, Shih-Jye Cheng, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with re

April 15, 2025 20-F

As filed with the Securities and Exchange Commission on April 15, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

As filed with the Securities and Exchange Commission on April 15, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 15, 2025 EX-13.1

ChipMOS TECHNOLOGIES INC.

Exhibit 13.1 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Shih-Jye Cheng, Chairman and President of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to his knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2024 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of

April 15, 2025 EX-13.2

ChipMOS TECHNOLOGIES INC.

Exhibit 13.2 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Silvia Su, Vice President of the Finance and Accounting Management Center of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to her knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2024 (the “Report”) fully complies with the requirements of Section

April 15, 2025 6-K

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 April, 2025 Commission File Number 001-37928

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 April, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 15, 2025 EX-4.23

SUPPLEMENTARY AGREEMENT TO EQUITY INTEREST TRANSFER AGREEMENT UNIMOS MICROELECTRONICS (SHANGHAI) CO., LTD. April 19, 2024

Exhibit 4.23 SUPPLEMENTARY AGREEMENT TO EQUITY INTEREST TRANSFER AGREEMENT OF UNIMOS MICROELECTRONICS (SHANGHAI) CO., LTD. April 19, 2024 This Supplementary Agreement to Equity Interest Transfer Agreement (this "Supplementary Agreement") is executed by the following parties in Qingpu District, Shanghai, PRC on April 19, 2024 ("Execution Date"). Party A: ChipMOS TECHNOLOGIES (BVI) LTD. Registered A

April 10, 2025 6-K

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 April, 2025 Commission File Number 001-37928

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 April, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 14, 2025 6-K

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, 2025 Commission File Number 001-37928

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, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 13, 2025 6-K

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, 2025 Commission File Number 001-37928

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, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 11, 2025 6-K

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, 2025 Commission File Number 001-37928

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, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 10, 2025 6-K

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, 2025 Commission File Number 001-37928

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, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 25, 2025 6-K

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 February, 2025 Commission File Number 001-379

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 February, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 25, 2025 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

February 2025 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 4Q24 & Full Year Results Conference Exhibit 99.

February 25, 2025 6-K

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 February, 2025 Commission File Number 001-379

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 February, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 25, 2025 EX-99.1

ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS • 6.3% Increase in Full Year 2024 Revenue Compared to Prior Year • 13.0% Full Year 2024 Gross Margin Compared to 16.6% in 2023 • Full Year

February 25, 2025 6-K

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 February, 2025 Commission File Number 001-379

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 February, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 18, 2025 6-K

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 February, 2025 Commission File Number 001-379

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 February, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 11, 2025 6-K

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 February, 2025 Commission File Number 001-379

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 February, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 10, 2025 6-K

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 February, 2025 Commission File Number 001-379

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 February, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

January 21, 2025 6-K

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, 2025 Commission File Number 001-3792

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, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

January 21, 2025 EX-99.1

ChipMOS ANNOUNCES NT$350 MILLION SHARE REPURCHASE PROGRAM

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS ANNOUNCES NT$350 MILLION SHARE REPURCHASE PROGRAM Hsinchu, Taiwan, January 21, 2025 - ChipMOS TECHNOLOGIES INC. (“ChipMOS” or the “Company”) (Taiwan Stock Exchange: 8150 and Nasdaq: IMOS),

January 10, 2025 6-K

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, 2025 Commission File Number 001-3792

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, 2025 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

December 10, 2024 6-K

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 December, 2024 Commission File Number 001-379

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 December, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 8, 2024 6-K

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, 2024 Commission File Number 001-379

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, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 5, 2024 EX-99.1

ChipMOS REPORTS THIRD QUARTER 2024 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS THIRD QUARTER 2024 RESULTS • 4.4% Increase in 3Q24 Revenue Compared to 2Q24, 8.7% Growth Compared to 3Q23 • 3.4% Expansion of 3Q24 Gross Profit Compared to 2Q24 • Overall Utilizati

November 5, 2024 6-K

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, 2024 Commission File Number 001-379

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, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 5, 2024 6-K

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, 2024 Commission File Number 001-379

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, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 5, 2024 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

November 2024 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 3Q24 Results Conference Exhibit 99.

October 28, 2024 6-K

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 October, 2024 Commission File Number 001-3792

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 October, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

October 17, 2024 6-K

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 October, 2024 Commission File Number 001-3792

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 October, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

October 9, 2024 6-K

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 October, 2024 Commission File Number 001-3792

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 October, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 19, 2024 6-K

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 September, 2024 Commission File Number 001-37

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 September, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 18, 2024 6-K

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 September, 2024 Commission File Number 001-37

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 September, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 12, 2024 6-K

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 September, 2024 Commission File Number 001-37

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 September, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 10, 2024 6-K

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 September, 2024 Commission File Number 001-37

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 September, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 13, 2024 EX-99.1

ChipMOS REPORTS SECOND QUARTER 2024 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS SECOND QUARTER 2024 RESULTS • 7.2% Increase in 2Q24 Revenue Compared to 1Q24 • 5.8% Increase in 2Q24 Gross Profit Compared to 1Q24 • Overall Utilization Rate Increased to 69% from

August 13, 2024 6-K

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 August, 2024 Commission File Number 001-37928

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 August, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 13, 2024 6-K

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 August, 2024 Commission File Number 001-37928

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 August, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 13, 2024 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

August 2024 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 2Q24 Results Conference Exhibit 99.

August 9, 2024 6-K

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 August, 2024 Commission File Number 001-37928

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 August, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 5, 2024 6-K

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 August, 2024 Commission File Number 001-37928

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 August, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 22, 2024 6-K

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 July 2024 Commission File Number 001-37928 Ch

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 July 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 10, 2024 6-K

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 July 2024 Commission File Number 001-37928 Ch

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 July 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 10, 2024 6-K

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 July, 2024 Commission File Number 001-37928 C

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 July, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 14, 2024 6-K

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 June, 2024 Commission File Number 001-37928 C

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 June, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 12, 2024 6-K

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 June 2024 Commission File Number 001-37928 Ch

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 June 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 11, 2024 6-K

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 June, 2024 Commission File Number 001-37928 C

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 June, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 7, 2024 6-K

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 June, 2024 Commission File Number 001-37928 C

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 June, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 30, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 30, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 30, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 24, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 23, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name into English)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT 南茂科技股份有限公司 (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name into English) Taiwan, Republic of China 001-37928 300-092 (State or other jurisdiction of incorporation) (Commission file number) (Zip code) No. 1, R&D Road 1, Hsin

May 20, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 10, 2024 EX-99.1

EX-99.1

Exhibit 99.17DEOHRI&RQWHQWV , /HWWHUWR6KDUHKROGHUV  ,, &RPSDQ\3URILOH , 'DWHRI,QFRUSRUDWLRQ   ,, &RPSDQ\+LVWRU\ 

May 10, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 10, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 10, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 9, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 9, 2024 EX-99.1

ChipMOS REPORTS FIRST QUARTER 2024 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FIRST QUARTER 2024 RESULTS • 17.7% Increase in 1Q24 Revenue Compared to 1Q23 • 180 Basis Point Expansion in Gross Margin to 14.2% in 1Q24 Compared to 12.4% in 1Q23 • Net Earnings M

May 9, 2024 6-K

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 May, 2024 Commission File Number 001-37928 Ch

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 May, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 9, 2024 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

May 2024 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 1Q24 Results Conference Exhibit 99.

April 30, 2024 6-K

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 April, 2024 Commission File Number 001-37928

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 April, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 29, 2024 EX-99.3

Meeting Notice for Annual Shareholders’ Meeting (Summary Translation)

Exhibit 99.3 Meeting Notice for Annual Shareholders’ Meeting (Summary Translation) (This English translation is prepared in accordance with the Chinese version and is for reference purposes only. If there are any inconsistency between the Chinese original and this translation, the Chinese version shall prevail.) The 2024 Annual Shareholders’ Meeting (the “Meeting”) of ChipMOS TECHNOLOGIES INC. (th

April 29, 2024 EX-99.1

Time Sensitive

Exhibit 99.1 Time Sensitive Materials Depositary’s Notice of 2024 Annual Shareholders’ Meeting of ChipMOS TECHNOLOGIES INC. ADSs: American Depositary Shares evidenced by American Depositary Receipts (“ADRs”). ADS CUSIP No.: 16965P202.* ADS Record Date: March 28, 2024. Meeting Specifics: 2024 Annual Shareholders’ Meeting - May 30, 2024 at 9:00 A.M. (local time) at the Hsinchu Science Park Life Hub,

April 29, 2024 6-K

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 April, 2024 Commission File Number 001-37928

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 April, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 29, 2024 EX-99.4

Table of Contents

Exhibit 99.4 Table of Contents A. Meeting Procedure 1 B. Meeting Agenda 2 I. Chairman’s Opening Remarks 3 II. Report Items 3 III. Matters for Ratification 3 IV. Elections 4 V. Other Proposals 5 VI. Extemporary Motions 5 C. Attachments 1. Business Report 6 2. Audit Committee’s Review Report 8 3. Report of Independent Accountants and Financial Statements 9 4. Earnings Distribution Table 29 5. List o

April 29, 2024 EX-99.2

2024 Annual Shareholders’ Meeting

Exhibit 99.2 2024 Annual Shareholders’ Meeting The Voting Instructions must be signed, completed and received at the indicated address prior to 10:00 A.M. (New York City time) on May 22, 2024 for action to be taken. 2024 VOTING INSTRUCTIONS AMERICAN DEPOSITARY SHARES ChipMOS TECHNOLOGIES INC. (the “Company”) ADS CUSIP No.: 16965P202.* ADS Record Date: March 28, 2024 Meeting Specifics: 2024 Annual

April 19, 2024 6-K

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 April, 2024 Commission File Number 001-37928

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 April, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 11, 2024 EX-13.1

ChipMOS TECHNOLOGIES INC.

Exhibit 13.1 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Shih-Jye Cheng, Chairman and President of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to his knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2023 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of

April 11, 2024 20-F

As filed with the Securities and Exchange Commission on April 11, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

As filed with the Securities and Exchange Commission on April 11, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 11, 2024 EX-4.24

ChipMOS TECHNOLOGIES (BVI) LTD. SUZHOU ORIZA PUHUA ZHIXIN EQUITY INVESTMENT PARTNERSHIP (L.P.) SUZHOU PUHUA CHUANXIN VENTURE CAPITAL PARTNERSHIP (LIMITED PARTNERSHIP) SUZHOU PUHUA XINCHENG VENTURE CAPITAL PARTNERSHIP (LIMITED PARTNERSHIP) SUZHOU XING

Exhibit 4.24 ChipMOS TECHNOLOGIES (BVI) LTD. AND SUZHOU ORIZA PUHUA ZHIXIN EQUITY INVESTMENT PARTNERSHIP (L.P.) SUZHOU PUHUA CHUANXIN VENTURE CAPITAL PARTNERSHIP (LIMITED PARTNERSHIP) SUZHOU PUHUA XINCHENG VENTURE CAPITAL PARTNERSHIP (LIMITED PARTNERSHIP) SUZHOU XINGWEI ENTERPRISE MANAGEMENT PARTNERSHIP (LIMITED PARTNERSHIP) GONGQINGCHENG YUANYAN VENTURE CAPITAL PARTNERSHIP (LIMITED PARTNERSHIP) G

April 11, 2024 EX-11.2

ChipMOS TECHNOLOGIES, INC. Insider Trading Policy

Exhibit 11.2 ChipMOS TECHNOLOGIES, INC. Insider Trading Policy I. Introduction This Insider Trading Policy (this “Policy”) of ChipMOS TECHNOLOGIES, Inc. (“ChipMOS” or the “Company”) explains that, due to the Securities Regulations1 and the obligations owed to the Company, the directors, Officers and employees2 of the Company shall prevent trading in Company securities as an insider of the Company

April 11, 2024 EX-97.1

ChipMOS Technologies Inc. Incentive-BASED Compensation Recovery Policy

Exhibit 97.1 ChipMOS Technologies Inc. Incentive-BASED Compensation Recovery Policy 1. Policy Purpose. The purpose of this ChipMOS TECHNOLOGIES INC. (the “Company”) Incentive-Based Compensation Recovery Policy (this “Policy”) is to enable the Company to recover Erroneously Awarded Compensation in the event that the Company is required to prepare an Accounting Restatement. This Policy is intended t

April 11, 2024 EX-12.2

CERTIFICATIONS

Exhibit 12.2 CERTIFICATIONS I, Silvia Su, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect

April 11, 2024 EX-12.1

CERTIFICATIONS

Exhibit 12.1 CERTIFICATIONS I, Shih-Jye Cheng, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with re

April 11, 2024 EX-13.2

ChipMOS TECHNOLOGIES INC.

Exhibit 13.2 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Silvia Su, Vice President of the Finance and Accounting Management Center of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to her knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2023 (the “Report”) fully complies with the requirements of Section

April 11, 2024 6-K

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 April, 2024 Commission File Number 001-37928

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 April, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 11, 2024 EX-4.23

(Translation, for reference only)

Exhibit 4.23 (Translation, for reference only) Unimos Microelectronics (Shanghai) Co., Ltd. AMENDED AND RESTATED AGREEMENT FOR SINO-FOREIGN EQUITY JOINT VENTURE (Proprietary & Strictly Confidential) UNIMOS MICROELECTRONICS (SHANGHAI) CO., LTD. AMENDED AND RESTATED AGREEMENT FOR SINO-FOREIGN EQUITY JOINT VENTURE (Translation, for reference only) Unimos Microelectronics (Shanghai) Co., Ltd. AMENDED

April 10, 2024 6-K

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 April, 2024 Commission File Number 001-37928

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 April, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 10, 2024 6-K

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 April 2024 Commission File Number 001-37928 C

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 April 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 10, 2024 6-K

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 April, 2024 Commission File Number 001-37928

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 April, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 14, 2024 6-K

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, 2024 Commission File Number 001-37928

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, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 8, 2024 6-K

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, 2024 Commission File Number 001-37928

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, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 29, 2024 EX-99.1

Notice to Holders of American Depositary Shares

Exhibit 99.1 Notice to Holders of American Depositary Shares ChipMOS TECHNOLOGIES INC. (the “Company”) (Taiwan Stock Exchange: 8150 and NASDAQ: IMOS) provides this notice for the revision to the notice filed on Form 6-K with the U.S. Securities and Exchange Commission on February 22, 2024 (the “Original Notice”). In order to cooperate with our Depositary’s revised schedule, the Company hereby info

February 29, 2024 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2024 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 23, 2024 6-K

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 February, 2024 Commission File Number 001-379

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 February, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 22, 2024 EX-99.1

ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2023 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2023 RESULTS Financial Highlights: • 22.2% Increase in Q4 2023 Revenue Compared to Q4 2022; 2.6% Increase Compared to Q3 2023; Full Year 2023 Revenue D

February 22, 2024 6-K

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 February, 2024 Commission File Number 001-379

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 February, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 22, 2024 6-K

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 February, 2024 Commission File Number 001-379

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 February, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 22, 2024 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

February 2024 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 4Q23 & Full Year Results Conference Exhibit 99.

February 22, 2024 6-K

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 February, 2024 Commission File Number 001-379

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 February, 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 7, 2024 6-K

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 February 2024 Commission File Number 001-3792

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 February 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

January 23, 2024 6-K

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 2024 Commission File Number 001-37928

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 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

January 10, 2024 6-K

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 2024 Commission File Number 001-37928

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 2024 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

December 21, 2023 EX-99.1

ChipMOS Board of Directors Approves US$137.1 Million Proposed Sale of Equity Interests in Unimos Microelectronics (Shanghai)

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS Board of Directors Approves US$137.1 Million Proposed Sale of Equity Interests in Unimos Microelectronics (Shanghai) Hsinchu, Taiwan, December 21, 2023 - ChipMOS TECHNOLOGIES INC. (“ChipMO

December 21, 2023 6-K

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 December, 2023 Commission File Number 001-379

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 December, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

December 8, 2023 6-K

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 December 2023 Commission File Number 001-3792

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 December 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 9, 2023 6-K

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 2023 Commission File Number 001-3792

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 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 2, 2023 6-K

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, 2023 Commission File Number 001-379

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, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 2, 2023 6-K

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, 2023 Commission File Number 001-379

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, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 2, 2023 EX-99.1

ChipMOS REPORTS THIRD QUARTER 2023 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS THIRD QUARTER 2023 RESULTS • Revenue Increases 2.5% Compared to 2Q23 • 15.9% Gross Margin Compared to 17.3% in 2Q23 • Overall Utilization Rate Increased to 63% from 60% in 2Q23 • N

November 2, 2023 EX-99.2

EX-99.2

November 2023 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 3Q23 Results Conference Exhibit 99.

October 6, 2023 6-K

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 October 2023 Commission File Number 001-37928

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 October 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

October 6, 2023 6-K

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 October 2023 Commission File Number 001-37928

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 October 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 8, 2023 6-K

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 September 2023 Commission File Number 001-379

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 September 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 6, 2023 6-K

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 September 2023 Commission File Number 001-379

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 September 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 5, 2023 6-K

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 September 2023 Commission File Number 001-379

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 September 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 30, 2023 6-K

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 August 2023 Commission File Number 001-37928

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 August 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 10, 2023 6-K

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 August 2023 Commission File Number 001-37928

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 August 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 3, 2023 EX-99.1

ChipMOS REPORTS SECOND QUARTER 2023 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS SECOND QUARTER 2023 RESULTS • Revenue Increases 18.2% Compared to 1Q23 • Gross Margin Increases 490 Basis Points from 1Q23 to 17.3% • Overall Utilization Rate Increased to 60% from

August 3, 2023 6-K

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 August, 2023 Commission File Number 001-37928

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 August, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 3, 2023 6-K

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 August, 2023 Commission File Number 001-37928

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 August, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 3, 2023 EX-99.2

EX-99.2

August 2023 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 2Q23 Results Conference Exhibit 99.

July 21, 2023 6-K

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 July 2023 Commission File Number 001-37928 Ch

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 July 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 17, 2023 6-K

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 July 2023 Commission File Number 001-37928 Ch

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 July 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 10, 2023 6-K

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 July 2023 Commission File Number 001-37928 Ch

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 July 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 9, 2023 6-K

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 June 2023 Commission File Number 001-37928 Ch

6-K 1 imos-6-k-mayrevenue.htm 6-K 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 June 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name Into English) No. 1, R&D Rd. 1, Hsinchu Science Park Hsinc

June 6, 2023 6-K

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 June 2023 Commission File Number 001-37928 Ch

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 June 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 31, 2023 6-K

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 May 2023 Commission File Number 001-37928 Chi

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 May 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 30, 2023 6-K

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 May, 2023 Commission File Number 001-37928 Ch

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 May, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 30, 2023 6-K

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 May, 2023 Commission File Number 001-37928 Ch

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 May, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 25, 2023 6-K

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 May 2023 Commission File Number 001-37928 Chi

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 May 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 18, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name into English)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT 南茂科技股份有限公司 (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name into English) Taiwan, Republic of China 001-37928 300-092 (State or other jurisdiction of incorporation) (Commission file number) (Zip code) No. 1, R&D Road 1, Hsin

May 12, 2023 CORRESP

VIA EDGAR

VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

May 10, 2023 6-K

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 May 2023 Commission File Number 001-37928 Chi

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 May 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 4, 2023 6-K

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 May, 2023 Commission File Number 001-37928 Ch

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 May, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 4, 2023 EX-99

ChipMOS first quarter 2023 conference call presentation material.

May 2023 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 1Q23 Results Conference Exhibit 99.

May 4, 2023 EX-99

ChipMOS REPORTS FIRST QUARTER 2023 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FIRST QUARTER 2023 RESULTS • US$151.1 Million in Revenue Compared to US$153.7 Million in 4Q22 • 12.4% Gross Margin Compared to 14.5% in 4Q22 • Net Earnings of NT$0.28 per Basic Com

May 4, 2023 6-K

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 May, 2023 Commission File Number 001-37928 Ch

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 May, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 28, 2023 EX-99

Table of Contents

Exhibit 99.4 Stock Code: 8150 ChipMOS TECHNOLOGIES INC. 2023 Annual Shareholders’ Meeting Meeting Handbook Time: May 30, 2023 Place: Hsinchu Science Park Life Hub (Einstein Hall, 2F, No. 1, Industry E. 2nd Rd., Hsinchu Science Park, Hsinchu, Taiwan) (This English translation is prepared in accordance with the Chinese version and is for reference purposes only. If there are any inconsistency betwee

April 28, 2023 EX-99

Meeting Notice for Annual Shareholders’ Meeting (Summary Translation)

Exhibit 99.3 Meeting Notice for Annual Shareholders’ Meeting (Summary Translation) (This English translation is prepared in accordance with the Chinese version and is for reference purposes only. If there are any inconsistency between the Chinese original and this translation, the Chinese version shall prevail.) The 2023 Annual Shareholders’ Meeting (the “Meeting”) of ChipMOS TECHNOLOGIES INC. (th

April 28, 2023 6-K

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 April, 2023 Commission File Number 001-37928

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 April, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 28, 2023 EX-99

Time Sensitive

Exhibit 99.1 Time Sensitive Materials Depositary’s Notice of 2023 Annual Shareholders’ Meeting of ChipMOS TECHNOLOGIES INC. ADSs: American Depositary Shares evidenced by American Depositary Receipts (“ADRs”). ADS CUSIP No.: 16965P202. ADS Record Date: March 31, 2023. Meeting Specifics: 2023 Annual Shareholders’ Meeting - May 30, 2023 at 9:00 A.M. (local time) at the Hsinchu Science Park Life Hub,

April 28, 2023 EX-99

2023 Annual Shareholders’ Meeting

Exhibit 99.2 2023 Annual Shareholders’ Meeting The Voting Instructions must be signed, completed and received at the indicated address prior to 10:00 A.M. (New York City time) on May 24, 2023 for action to be taken. 2023 VOTING INSTRUCTIONS AMERICAN DEPOSITARY SHARES ChipMOS TECHNOLOGIES INC. (the “Company”) ADS CUSIP No.: 16965P202. ADS Record Date: March 31, 2023. Meeting Specifics: 2023 Annual

April 20, 2023 6-K

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 April 2023 Commission File Number 001-37928 C

6-K 1 1q23resultsconfcalln.htm 6-K 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 April 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name Into English) No. 1, R&D Rd. 1, Hsinchu Science Park Hsi

April 13, 2023 EX-11

Code of Ethics Conduct. (English Translation)

Exhibit 11.1 ChipMOS TECHNOLOGIES INC. Code of Ethical Conduct Article 1 (Purpose of and basis for adoption) To guide directors, managers and other employees of the Company to act in line with our code of ethics and to allow the interested parties of the Company to have more understanding about our code of ethics, the present Code of Ethical Conduct is hereby formulated for the purpose of complian

April 13, 2023 EX-4

Amendment and Restatement of Agreement for Sino-Foreign Equity Joint Venture dated December 15, 2022, among ChipMOS TECHNOLOGIES (BVI) LTD., Yangtze Memory Technologies Co., Ltd., Accretech (China) Co., Ltd., Chao-Jung Tsai, Shih-Jye Cheng, Shou-Kang Chen and David W. Wang. (English Translation)

Exhibit 4.22 (Translation, for reference only) Unimos Microelectronics (Shanghai) Co., Ltd. AMENDED AND RESTATED AGREEMENT FOR SINO-FOREIGN EQUITY JOINT VENTURE (Proprietary & Strictly Confidential) UNIMOS MICROELECTRONICS (SHANGHAI) CO., LTD. AMENDED AND RESTATED AGREEMENT FOR SINO-FOREIGN EQUITY JOINT VENTURE (Translation, for reference only) Unimos Microelectronics (Shanghai) Co., Ltd. AMENDED

April 13, 2023 20-F

As filed with the Securities and Exchange Commission on April 13, 2023 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

As filed with the Securities and Exchange Commission on April 13, 2023 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 13, 2023 EX-12

Certification of Principal Financial Officer required by Rule 13a-14(a) under the Exchange Act.

Exhibit 12.2 CERTIFICATIONS I, Silvia Su, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect

April 13, 2023 EX-13

Certification of Principal Financial Officer required by Rule 13a-14(b) under the Exchange Act.

Exhibit 13.2 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Silvia Su, Vice President of the Finance and Accounting Management Center of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to her knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2022 (the “Report”) fully complies with the requirements of Section

April 13, 2023 EX-1

Articles of Incorporation of ChipMOS TECHNOLOGIES INC. as amended on May 26, 2022. (English Translation)

Exhibit 1.1 ChipMOS TECHNOLOGIES INC. Articles of Incorporation Section I General Provisions Article 1 The Company has been incorporated as a company limited by shares under the Company Act. The name of the Company is "南茂科技股份有限公司" in Chinese, and "ChipMOS TECHNOLOGIES INC." in English. Article 2 The scope of business of the Company shall be as follows: CC01080 Electronic Parts and Components Manuf

April 13, 2023 6-K

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 April, 2023 Commission File Number 001-37928

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 April, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 13, 2023 EX-12

Certification of Principal Executive Officer required by Rule 13a-14(a) under the Exchange Act.

Exhibit 12.1 CERTIFICATIONS I, Shih-Jye Cheng, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with re

April 13, 2023 EX-13

Certification of Principal Executive Officer required by Rule 13a-14(b) under the Exchange Act.

Exhibit 13.1 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Shih-Jye Cheng, Chairman and President of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to his knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2022 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of

April 10, 2023 6-K

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 April 2023 Commission File Number 001-37928 C

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 April 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 10, 2023 6-K

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 2023 Commission File Number 001-37928 C

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 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 9, 2023 6-K

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 2023 Commission File Number 001-37928 C

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 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 23, 2023 6-K

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 February, 2023 Commission File Number 001-379

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 February, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 23, 2023 EX-99

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

February 2023 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 4Q22 & Full Year Results Conference Exhibit 99.

February 23, 2023 6-K

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 February, 2023 Commission File Number 001-379

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 February, 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 23, 2023 6-K

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 February 2023 Commission File Number 001-3792

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 February 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 23, 2023 EX-99

ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2022 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2022 RESULTS Full Year 2022 Highlights (as compared to the Full Year 2021): • US$765.3 Million in Revenue Compared to US$891.6 Million • 20.9% Gross Ma

February 10, 2023 6-K

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 February 2023 Commission File Number 001-3792

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 February 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 8, 2023 6-K

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 February 2023 Commission File Number 001-3792

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 February 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

January 10, 2023 6-K

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 2023 Commission File Number 001-37928

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 2023 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

December 13, 2022 6-K

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 December 2022 Commission File Number 001-3792

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 December 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

December 9, 2022 6-K

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 December 2022 Commission File Number 001-3792

6-K 1 imos-6-k-novrevenue.htm 6-K 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 December 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name Into English) No. 1, R&D Rd. 1, Hsinchu Science Park H

November 10, 2022 6-K

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 2022 Commission File Number 001-3792

6-K 1 imos-6-k-octrevenue.htm 6-K 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 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name Into English) No. 1, R&D Rd. 1, Hsinchu Science Park H

November 3, 2022 6-K

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, 2022 Commission File Number 001-379

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, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

November 3, 2022 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

EX-99.2 3 imos-ex992.htm EX-99.2 November 2022 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services Q3’22 Results Conference Exhibit 99.2 Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks

November 3, 2022 EX-99.1

ChipMOS REPORTS THIRD QUARTER 2022 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS THIRD QUARTER 2022 RESULTS ? Global Inflationary Pressures, Inventory Adjustments and Macro Weakness Adversely Impact Revenue, Gross Margin and Utilization Level ? US$165.3 Million

November 3, 2022 6-K

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, 2022 Commission File Number 001-379

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, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

October 12, 2022 6-K

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 October 2022 Commission File Number 001-37928

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 October 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

October 7, 2022 6-K

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 October 2022 Commission File Number 001-37928

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 October 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

October 3, 2022 6-K

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 October 2022 Commission File Number 001-37928

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 October 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

September 8, 2022 6-K

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 September, 2022 Commission File Number 001-37

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 September, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 31, 2022 6-K

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 August 2022 Commission File Number 001-37928

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 August 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 10, 2022 6-K

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 August, 2022 Commission File Number 001-37928

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 August, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 4, 2022 EX-99.1

ChipMOS REPORTS SECOND QUARTER 2022 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS SECOND QUARTER 2022 RESULTS ? Revenue Increases 1.9% Compared to 1Q22 ? Gross Margin Increases 40 Basis Points from 1Q22 to 25.4% ? Net Earnings Increase to NT$1.82 or US$0.06 per

August 4, 2022 6-K

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 August, 2022 Commission File Number 001-37928

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 August, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 4, 2022 6-K

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 August, 2022 Commission File Number 001-37928

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 August, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

August 4, 2022 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

August 2022 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services Q2?22 Results Conference Exhibit 99.

July 21, 2022 6-K

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 July, 2022 Commission File Number 001-37928 C

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 July, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 12, 2022 6-K

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 July, 2022 Commission File Number 001-37928 C

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 July, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

July 8, 2022 6-K

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 July, 2022 Commission File Number 001-37928 C

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 July, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 10, 2022 6-K

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 June, 2022 Commission File Number 001-37928 C

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 June, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

June 6, 2022 6-K

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 June 2022 Commission File Number 001-37928 Ch

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 June 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 27, 2022 6-K

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 May, 2022 Commission File Number 001-37928 Ch

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 May, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 26, 2022 6-K

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 May, 2022 Commission File Number 001-37928 Ch

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 May, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 26, 2022 6-K

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 May, 2022 Commission File Number 001-37928 Ch

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 May, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 19, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant’s Name into English) Taiwan, Rep

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ?????????? (Exact name of registrant as specified in its charter) ChipMOS TECHNOLOGIES INC. (Translation of Registrant?s Name into English) Taiwan, Republic of China 001-37928 300-092 (State or other jurisdiction of incorporation) (Commission file number) (Zip code) No. 1, R&D Road 1, Hsin

May 10, 2022 6-K

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 May 2022 Commission File Number 001-37928 Chi

6-K 1 d352861d6k.htm FORM 6-K 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 May 2022 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, T

May 10, 2022 6-K

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 May, 2022 Commission File Number 001-37928 Ch

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 May, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 5, 2022 EX-99.1

ChipMOS REPORTS FIRST QUARTER 2022 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FIRST QUARTER 2022 RESULTS ? Revenue Increases 4% in 1Q22 Compared to 1Q21 ? 25% Gross Margin Increases 80 Basis Points from 1Q21 Despite Global Inflation and Supply Chain Constrai

May 5, 2022 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

May 2022 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services Q1?22 Results Conference Exhibit 99.

May 5, 2022 6-K

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 May, 2022 Commission File Number 001-37928 Ch

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 May, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

May 5, 2022 6-K

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 May, 2022 Commission File Number 001-37928 Ch

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 May, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 25, 2022 EX-99.1

Depositary’s Notice of 2022 Annual Shareholders’ Meeting of ChipMOS TECHNOLOGIES INC. ADSs: American Depositary Shares evidenced by American Depositary Receipts (“ADRs”). ADS CUSIP No.: 16965P202. ADS Record Date: March 25, 2022. Meeting Specifics: 2

Exhibit 99.1 Time Sensitive Materials Depositary?s Notice of 2022 Annual Shareholders? Meeting of ChipMOS TECHNOLOGIES INC. ADSs: American Depositary Shares evidenced by American Depositary Receipts (?ADRs?). ADS CUSIP No.: 16965P202. ADS Record Date: March 25, 2022. Meeting Specifics: 2022 Annual Shareholders? Meeting?May 26, 2022 at 9:00 A.M. (local time) at the Hsinchu Science Park Life Hub, Ei

April 25, 2022 6-K

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 April, 2022 Commission File Number 001-37928

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 April, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 25, 2022 EX-99.2

2022 Annual Shareholders’ Meeting The Voting Instructions must be signed, completed and received at the indicated address prior to 10:00 A.M. (New York City time) on May 18, 2022 for action to be taken. 2022 VOTING INSTRUCTIONS AMERICAN DEPOSITARY SH

Exhibit 99.2 2022 Annual Shareholders? Meeting The Voting Instructions must be signed, completed and received at the indicated address prior to 10:00 A.M. (New York City time) on May 18, 2022 for action to be taken. 2022 VOTING INSTRUCTIONS AMERICAN DEPOSITARY SHARES ChipMOS TECHNOLOGIES INC. (the ?Company?) ADS CUSIP No.: 16965P202. ADS Record Date: March 25, 2022. Meeting Specifics: 2022 Annual

April 25, 2022 EX-99.3

Meeting Notice for Annual Shareholders’ Meeting (Summary Translation)

Exhibit 99.3 Meeting Notice for Annual Shareholders? Meeting (Summary Translation) (This English translation is prepared in accordance with the Chinese version and is for reference purposes only. If there are any inconsistency between the Chinese original and this translation, the Chinese version shall prevail.) The 2022 Annual Shareholders? Meeting (the ?Meeting?) of ChipMOS TECHNOLOGIES INC. (th

April 25, 2022 EX-99.4

Table of Contents A. Meeting Procedure 1 B. Meeting Agenda 2 I.   Chairman’s Opening Remarks 3 II. Report Items 3 III.  Matters for Ratification 4 IV.  Matters for Discussion 5 V. Extemporary Motions 6 C. Attachments 1.  Business Report 7 2.  Audit C

Exhibit 99.4 Table of Contents A.?Meeting Procedure 1 B.?Meeting Agenda 2 I.???Chairman?s Opening Remarks 3 II.?Report Items 3 III.??Matters for Ratification 4 IV.??Matters for Discussion 5 V.?Extemporary Motions 6 C.?Attachments 1.??Business Report 7 2.??Audit Committee?s Review Report 9 3.??Report of Independent Accountants and Financial Statements 10 4.??Earnings Distribution Proposal 33 5.??Co

April 14, 2022 6-K

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 April, 2022 Commission File Number 001-37928

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 April, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 14, 2022 EX-13.2

Certification of Principal Financial Officer required by Rule 13a-14(b) under the Exchange Act.

EX-13.2 Exhibit 13.2 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Silvia Su, Vice President of the Finance and Accounting Management Center of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to her knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2021 (the “Report”) fully complies with the requirements of

April 14, 2022 6-K

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 April, 2022 Commission File Number 001-37928

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 April, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 14, 2022 EX-12.2

Certification of Principal Financial Officer required by Rule 13a-14(a) under the Exchange Act.

EX-12.2 Exhibit 12.2 CERTIFICATIONS I, Silvia Su, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with

April 14, 2022 EX-1.1

Articles of Incorporation of ChipMOS TECHNOLOGIES INC. as amended on July 12, 2021. (English Translation)

EX-1.1 2 d282734dex11.htm EX-1.1 Exhibit 1.1 ChipMOS TECHNOLOGIES INC. Articles of Incorporation SECTION I GENERAL PROVISIONS Article 1 The Company has been incorporated as a company limited by shares under the Company Act. The name of the Company is “南茂科技股份有限公司” in Chinese, and “ChipMOS TECHNOLOGIES INC.” in English. Article 2 The scope of business of the Company shall be as follows: CC01080 Elec

April 14, 2022 EX-13.1

Certification of Principal Executive Officer required by Rule 13a-14(b) under the Exchange Act.

EX-13.1 Exhibit 13.1 ChipMOS TECHNOLOGIES INC. CERTIFICATION Pursuant to 18 U.S.C. §1350, the undersigned, Shih-Jye Cheng, Chairman and President of ChipMOS TECHNOLOGIES INC. (the “Company”), hereby certifies, to his knowledge, that the Company’s Annual Report on Form 20-F for the year ended December 31, 2021 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applica

April 14, 2022 20-F

As filed with the Securities and Exchange Commission on April 14, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 193

Table of Contents As filed with the Securities and Exchange Commission on April 14, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 14, 2022 EX-12.1

Certification of Principal Executive Officer required by Rule 13a-14(a) under the Exchange Act.

EX-12.1 Exhibit 12.1 CERTIFICATIONS I, Shih-Jye Cheng, certify that: 1. I have reviewed this annual report on Form 20-F of ChipMOS TECHNOLOGIES INC.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading

April 12, 2022 6-K

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 April, 2022 Commission File Number 001-37928

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 April, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

April 8, 2022 6-K

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 April, 2022 Commission File Number 001-37928

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 April, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 10, 2022 6-K

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, 2022 Commission File Number 001-37928

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, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

March 9, 2022 6-K

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 2022 Commission File Number 001-37928 C

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 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 24, 2022 EX-99.1

ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2021 RESULTS

Exhibit 99.1 Contacts: In Taiwan Jesse Huang ChipMOS TECHNOLOGIES INC. +886-6-5052388 ext. 7715 [email protected] In the U.S. David Pasquale Global IR Partners +1-914-337-8801 [email protected] ChipMOS REPORTS FOURTH QUARTER AND FULL YEAR 2021 RESULTS Full Year 2021 Highlights (as compared to the Full Year 2020): ? Record Full Year Revenue and Net Earnings ? 19% Increase in Revenue to US

February 24, 2022 6-K

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 February, 2022 Commission File Number 001-379

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 February, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 24, 2022 6-K

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 February, 2022 Commission File Number 001-379

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 February, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 24, 2022 EX-99.2

Safe Harbor Notice This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as ‘believes,’ ‘expects,’ ‘anticipates,’ ‘projects,’ ‘intends,’ ‘should,’ ‘seeks,’ ‘estimates,’ ‘future

February 2022 Industry Leading Provider of Outsourced Semiconductor Assembly, Test & Bumping Services 4Q/FY2021 Results Conference Exhibit 99.

February 24, 2022 6-K

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 February, 2022 Commission File Number 001-379

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 February, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 10, 2022 6-K

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 February, 2022 Commission File Number 001-379

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 February, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

February 10, 2022 6-K

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 February, 2022 Commission File Number 001-379

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 February, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

January 10, 2022 6-K

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, 2022 Commission File Number 001-3792

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, 2022 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

December 29, 2021 6-K

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 December 2021 Commission File Number 001-3792

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 December 2021 Commission File Number 001-37928 ChipMOS TECHNOLOGIES INC.

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