TSMC VP Ku buys 47 shares at $76.20 in ESPP

TSM vice president Yao-Ching Ku added a small number of shares via the employee stock purchase plan while disclosing sizable existing direct and indirect holdings.

Available on EDGAR 09/09/2026 - 06:06 AM EDT Accepted by SEC EDGAR 09/09/2026 - 06:05 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) reported that vice president Yao-Ching Ku had an administrator of the company’s Employee Stock Purchase Plan buy 47 common shares on the Taiwan market on September 7, 2026 at $76.20 per share, translated from a New Taiwan dollar price. These shares are held indirectly in an ESPP trust, bringing that ESPP-related position to 188 shares. Separate from the ESPP, the filing lists 30,851 shares held directly, and additional indirect holdings of 72,946 shares through a spouse and 131,000 shares through Wei Liang Asset Management Co. Ltd. No Rule 10b5-1 trading plan is reported for this purchase.

Insider Trade Summary

Net Buyer: 47 shares

Net Buy 4 txns

Insider Ku Yao-Ching

Role VP

Bought 47 shs ($4K)

Increase in Position 33.3%

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) F1, F2, F3	47	$76.20	$4K
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 188 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 30,851 shares (Direct); Common Shares (2330.TW) — 72,946 shares (Indirect, By Spouse); Common Shares (2330.TW) — 131,000 shares (Indirect, By Wei Liang Asset Management Co. Ltd.)

Holdings Before and After: Common Shares (2330.TW), 141 to 188 shares (Indirect, By ESPP Trust)

Other Insiders: 29 other insiders reported open-market purchases of this stock in the 30 days up to this filing.

Footnotes (3)

1. F1. Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer pursuant to terms predetermined by the issuer.
2. F2. The price was translated from the average purchase price of NT$2,404.3453 in New Taiwan dollars, at the rate of NT$31.552 to US$1.
3. F3. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").

Key Figures

Shares purchased: 47 shares Purchase price per share: $76.20 per share Average ESPP purchase price: NT$2,404.3453 +5 more

8 metrics

Shares purchased 47 shares Common shares bought for Yao-Ching Ku on September 7, 2026 under the ESPP

Purchase price per share $76.20 per share Dollar price translated from a New Taiwan dollar average purchase price

Average ESPP purchase price NT$2,404.3453 Average price in New Taiwan dollars used for the ESPP purchase

Exchange rate NT$31.552 to US$1 Rate used to translate the ESPP purchase price into US dollars

Indirect ESPP holdings after transaction 188 shares Common shares held for Yao-Ching Ku under the Employee Stock Purchase Plan

Direct holdings after transaction 30,851 shares Common shares of Taiwan Semiconductor held directly by Yao-Ching Ku

Indirect spouse holdings 72,946 shares Common shares held indirectly through the reporting person’s spouse

Indirect holdings via Wei Liang Asset Management 131,000 shares Common shares held indirectly through Wei Liang Asset Management Co. Ltd.

Key Terms

Employee Stock Purchase Plan, ESPP trust, average purchase price, New Taiwan dollars, +1 more

5 terms

Employee Stock Purchase Plan financial

"Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP")"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

ESPP trust financial

"Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP")."

average purchase price financial

"The price was translated from the average purchase price of NT$2,404.3453 in New Taiwan dollars"

New Taiwan dollars financial

"average purchase price of NT$2,404.3453 in New Taiwan dollars, at the rate of NT$31.552 to US$1"

The New Taiwan Dollar (NTD) is the official currency used in Taiwan for everyday transactions, like buying groceries or paying bills. For investors, it matters because its value can influence Taiwan’s economy and affect the profitability of investments related to the region. Changes in the currency’s strength can also impact international trade and financial markets involving Taiwan.

indirect ownership financial

"Common shares held indirectly through a spouse and through Wei Liang Asset Management Co. Ltd."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What transaction in TSM stock did Yao-Ching Ku report on September 7, 2026?

The filing reports a purchase of 47 TSM common shares on September 7, 2026, carried out by the administrator of Taiwan Semiconductor’s Employee Stock Purchase Plan on behalf of vice president Yao-Ching Ku and held in an ESPP trust.

What price did the TSM shares trade at in the reported purchase?

The 47 TSM common shares were acquired at $76.20 per share, based on translation from an average purchase price of NT$2,404.3453 using an exchange rate of NT$31.552 to US$1.

How many TSM shares does Yao-Ching Ku hold directly after this Form 4?

After the reported transactions, Yao-Ching Ku holds 30,851 TSM common shares directly. This direct holding is separate from any shares held through the ESPP trust, a spouse, or Wei Liang Asset Management Co. Ltd.

What indirect TSM holdings related to the ESPP does the Form 4 show?

The Form 4 shows that 188 TSM common shares are held indirectly for Yao-Ching Ku under Taiwan Semiconductor’s Employee Stock Purchase Plan, in an ESPP trust, after the September 7, 2026 purchase.

What other indirect TSM shareholdings for Yao-Ching Ku are disclosed?

In addition to the ESPP trust, the filing lists 72,946 TSM common shares held indirectly through a spouse and 131,000 shares held indirectly through Wei Liang Asset Management Co. Ltd., reflecting substantial indirect ownership interests.

Was the reported TSM share purchase made under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan applies to this transaction. The shares were purchased under the company’s Employee Stock Purchase Plan according to terms predetermined by Taiwan Semiconductor.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Ku Yao-Ching

(Last) (First) (Middle)

NO. 8, LI-HSIN ROAD 6

HSINCHU SCIENCE PARK

(Street)

HSINCHU TAIWAN 300096

(City) (State) (Zip)

TAIWAN

(Country)

2. Issuer Name and Ticker or Trading Symbol
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD [ TSM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP

2a. Foreign Trading Symbol
[2330.TW]

3. Date of Earliest Transaction (Month/Day/Year)
09/07/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Shares (2330.TW)								30,851	D
Common Shares (2330.TW)	09/07/2026(1)		P		47	A	$76.2(2)	188(3)	I	By ESPP Trust
Common Shares (2330.TW)								72,946	I	By Spouse
Common Shares (2330.TW)								131,000	I	By Wei Liang Asset Management Co. Ltd.

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer pursuant to terms predetermined by the issuer.

2. The price was translated from the average purchase price of NT$2,404.3453 in New Taiwan dollars, at the rate of NT$31.552 to US$1.

3. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").

Remarks:

	/s/ Jen-Chau Huang, as attorney-in-fact	09/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)