Report of Foreign Issuer (6-k)

Taiwan Semiconductor Manufacturing Company Ltd.

Date: July 9, 2019

/s/ Lora Ho

Senior Vice President & Chief Financial Officer

1934 Act Registration No. 1-14700

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

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

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of July 2019

Taiwan Semiconductor Manufacturing Company Ltd.

(Translation of Registrant’s Name Into English)

No. 8, Li-Hsin Rd. 6,

Hsinchu Science Park,

Taiwan

(Address of Principal Executive Offices)

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

Form 20-F ☒ Form 40-F ☐

(Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

Yes ☐ No ☒

(If “Yes” is marked, indicated below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82: .)

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.

LOGO

TSMC Sets September 19 as Ex-Dividend Date for

First Quarter 2019 Cash Dividend

Hsinchu, Taiwan, R.O.C. – July 9, 2019 - TSMC today set September 25, 2019 as the record date for common stock shareholders entitled to participate in distribution of first quarter 2019 profits in the form of a cash dividend of NT$2 per share, as approved by the Board of Directors on June 5. The ex-dividend date for TSMC common shares shall be September 19, 2019. As required by Article 165 of Taiwan’s Company Law, the shareholders’ register shall be closed for five days prior to the record date (September 21 through September 25, 2019) for registration transfer. The distribution date is scheduled on October 17, 2019. Going forward, TSMC has set the payment months for quarterly dividends as January, April, July, and October of each year.

In addition, the ex-dividend date for TSMC American Depositary Shares (ADSs) will be September 19. The record date for TSMC ADSs entitled to participate in this cash dividend distribution will be September 20. Holders of ADSs are encouraged to check with their securities brokers for receipt of the cash dividend in their own accounts. Any questions regarding this upcoming dividend may be directed to Mr. Ganesh Sarpotdar at Citibank, N.A. (Tel: +1-212-816-6783; email: ganesh.sarpotdar@citi.com)

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