[6-K] TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD Current Report (Foreign Issuer)

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1934 Act Registration No. 1-14700

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

_____________________________

FORM 6-K

_____________________________

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)

_____________________________

Taiwan Semiconductor Manufacturing Company Limited

(Translation of Registrant’s Name Into English)

_____________________________

No. 8, Li-Hsin Road 6

Hsinchu Science Park

Hsinchu 300-096, Taiwan

Republic of China

(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  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: October 9, 2025

By

/s/ Wendell Huang

Wendell Huang

Senior Vice President and Chief Financial Officer

TSMC September 2025 Revenue Report

HSINCHU, Taiwan, R.O.C. – Oct. 9, 2025 - TSMC (TWSE: 2330, NYSE: TSM) today announced its net revenue for September 2025: On a consolidated basis, revenue for September 2025 was approximately NT$330.98 billion, a decrease of 1.4 percent from August 2025 and an increase of 31.4 percent from September 2024. Revenue for January through September 2025 totaled NT$2,762.96 billion, an increase of 36.4 percent compared to the same period in 2024.

			TSMC September Revenue Report (Consolidated):
																								(Unit:NT$ million)
			Period			September 2025			August 2025			M-o-M Increase (Decrease) %			September 2024			Y-o-Y Increase (Decrease) %			January to September 2025			January to September 2024			Y-o-Y Increase (Decrease) %
			Net Revenue			330,980			335,772			(1.4)			251,873			31.4			2,762,964			2,025,847			36.4

TSMC Spokesperson:

TSMC Media Contacts

Wendell Huang Senior Vice President and CFO

Nina Kao Head of Public Relations Tel: 886-3-563-6688 ext.7125036 Mobile: 886-988-239-163 E-Mail: press@tsmc.com

Ulric Kelly Public Relations Tel: 886-3-563-6688 ext.7126541 Mobile: 886-978-111-503 E-Mail: press@tsmc.com

Taiwan Semiconductor Manufacturing Company Limited

This is to report the changes or status of 1) revenue, 2) funds lent to other parties, 3) endorsements and guarantees, and 4) financial derivative transactions for September 2025 (“Current Month”).

Note: “Outstanding” herein means the outstanding balance at the end of Current Month; and “Cumulative” herein represents the accumulated amounts from the beginning of this year till the end of Current Month.

1. Revenue (in NT$ thousands)

Period			Items			2025			2024
Sep.			Net Revenue			330,980,920			251,872,717
Jan. ~ Sep.			Net Revenue			2,762,963,851			2,025,846,521

2. Funds lent to other parties (in NT$ thousands)

Lending Company			Limit of lending			Amount approved by the Board of Directors			Outstanding amount
TSMC China*			110,876,206			28,306,250			14,567,300
TSMC Development**			32,821,191			1,831,860			1,831,860

* The borrower is TSMC Nanjing, a wholly-owned subsidiary of TSMC.

** The borrower is TSMC Washington, a wholly-owned subsidiary of TSMC.

3. Endorsements and guarantees (in NT$ thousands)

Guarantor			Limit of guarantee			Amount approved by the Board of Directors			Outstanding amount
TSMC*			1,832,429,590			2,540,585			2,540,585
TSMC**						198,451,500			198,451,500
TSMC***						457,787,235			333,756,846

* The guarantee was provided to TSMC North America, a wholly-owned subsidiary of TSMC.

** The guarantee was provided to TSMC Global, a wholly-owned subsidiary of TSMC.

*** The guarantee was provided to TSMC Arizona, a wholly-owned subsidiary of TSMC.

4. Financial derivative transactions (in NT$ thousands)

(1)Derivatives not applying hedge accounting.

‧TSMC

						Forward
Margin Payment						-
Premium Income (Expense)						-
Existing Contracts			Outstanding Notional Amount			210,103,177
			Mark to Market of Outstanding Contracts			(1,144,690)
			Cumulative Unrealized Profit/Loss			(718,754)
Expired Contracts			Cumulative Notional Amount			969,024,470
			Cumulative Realized Profit/Loss			1,877,252
Equity price linked product (Y/N)						N

‧TSMC China

						Forward
Margin Payment						-
Premium Income (Expense)						-
Existing Contracts			Outstanding Notional Amount			2,925,696
			Mark to Market of Outstanding Contracts			(2,955)
			Cumulative Unrealized Profit/Loss			(2,891)
Expired Contracts			Cumulative Notional Amount			9,666,466
			Cumulative Realized Profit/Loss			(9,147)
Equity price linked product (Y/N)						N

‧TSMC Nanjing

						Forward
Margin Payment						-
Premium Income (Expense)						-
Existing Contracts			Outstanding Notional Amount			8 ,463,834
			Mark to Market of Outstanding Contracts			(9,113)
			Cumulative Unrealized Profit/Loss			(8,660)
Expired Contracts			Cumulative Notional Amount			28,865,613
			Cumulative Realized Profit/Loss			(18,461)
Equity price linked product (Y/N)						N

‧Japan Advanced Semiconductor Mfg., Inc.

						Forward
Margin Payment						-
Premium Income (Expense)						-
Existing Contracts			Outstanding Notional Amount			4,037,197
			Mark to Market of Outstanding Contracts			16,230
			Cumulative Unrealized Profit/Loss			(178,216)
Expired Contracts			Cumulative Notional Amount			89,756,498
			Cumulative Realized Profit/Loss			(324,840)
Equity price linked product (Y/N)						N

(2)Derivatives applying hedge accounting.

‧TSMC Global

						Future
Margin Payment						(9,617)
Premium Income (Expense)						-
Existing Contracts			Outstanding Notional Amount			644,204
			Mark to Market of Outstanding Contracts			(1,535)
			Cumulative Unrealized Profit/Loss			(12,783)
Expired Contracts			Cumulative Notional Amount			10,438,549
			Cumulative Realized Profit/Loss			(30,232)
Equity price linked product (Y/N)						N