1934 Act Registration No. 1-14700

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

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FORM 6-K

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REPORT OF FOREIGN PRIVATE ISSUER

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

THE SECURITIES EXCHANGE ACT OF 1934

For the month of July 2026

(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

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Taiwan Semiconductor Manufacturing Company Limited

Date: July 2, 2026

/s/ Wendell Huang

Wendell Huang

Senior Vice President and Chief Financial Officer

Change of Treasurer of TSMC Arizona Corporation, a major subsidiary of TSMC

Effective July 1, 2026 (July 2, 2026, Taipei Time), Gina Proctor’s position has been adjusted, and she will no longer serve as the Treasurer of TSMC Arizona Corporation. A new Treasurer will be announced following the appointment by the Board of Directors of TSMC Arizona Corporation.

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD 6-K