6-K

1934 Act Registration No. 1-14700

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 6-K

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REPORT OF FOREIGN PRIVATE ISSUER

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

THE SECURITIES EXCHANGE ACT OF 1934

For the month of October 2025

(Commission File Number: 001-14700)

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Taiwan Semiconductor Manufacturing Company Limited

(Translation of Registrant’s Name Into English)

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No. 8, Li-Hsin Road 6

Hsinchu Science Park

Hsinchu 300-096, Taiwan Republic of China

(Address of Principal Executive Offices)

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Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  x            Form 40-F  o

Indicate by check mark if the registrant is submitting the Form 6-K in papers as permitted by Regulation S-T Rule 101(b)(1):o

Indicate by check mark if the registrant is submitting the Form 6-K in papers as permitted by Regulation S-T Rule 101(b)(7):o

Taiwan Semiconductor Manufacturing Company Limited

("TSMC"; NYSE: TSM)

This is to report 1) the changes in the shareholdings of TSMC board of directors, executive officers and shareholders who own more than 10% of total outstanding common shares of TSMC; 2) the changes in the pledge of TSMC common shares by TSMC board of directors, executive officers and shareholders who own more than 10% of total outstanding common shares of TSMC; 3) the acquisition and disposition of assets by TSMC and its subsidiaries; 4) the capital appropriations approved by TSMC board of directors; 5) the unsecured bonds issued by TSMC and its subsidiaries and 6) the cancellation of TSMC common shares for the month of September 2025.

1.The changes in the shareholdings of TSMC board of directors, executive officers and shareholders who own more than 10% of total outstanding common shares of TSMC:

Note: Shareholdings include shares held by the related parties.

2.The changes in the pledge of TSMC common shares by TSMC board of directors, executive officers and shareholders who own more than 10% of total outstanding common shares of TSMC: None.

3.The acquisition and disposition of assets by TSMC and its subsidiaries:

Fixed-income investment: NT$16.6 billion of acquisition and NT$1.0 billion of disposition.

4.The capital appropriations approved by TSMC board of directors: None.

5.The unsecured bonds issued by TSMC and its subsidiaries:

All values are in US Dollars.

6.The cancellation of TSMC common shares: None.