TSMC VP Yoo buys 53 shares at $76.20 each

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) officer Yoo Chue-San, a vice president, reported an indirect purchase of 53 common shares on September 7, 2026 at $76.20 per share, executed by the administrator of the company’s Employee Stock Purchase Plan under predetermined terms and held in an ESPP trust.

After this transaction, reported positions include 6,694 shares in the ESPP trust, 1,805,789 shares held directly, and additional indirect holdings of 7,036 shares via a Long-Term Incentive plan trust, 219,924 shares by the spouse, and 851,908 shares through Yuding Investment Co., Ltd.

Insider Trade Summary

Net Buyer: 53 shares

Net Buy 5 txns

Insider Yoo Chue-San

Role VP

Bought 53 shs ($4K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) F1, F2, F3	53	$76.20	$4K
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW) F4	--	--	--
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 6,694 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 1,805,789 shares (Direct); Common Shares (2330.TW) — 7,036 shares (Indirect, By LTI Trust); Common Shares (2330.TW) — 219,924 shares (Indirect, By Spouse); Common Shares (2330.TW) — 851,908 shares (Indirect, By Yuding Investment Co., Ltd.)

Footnotes (4)

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").
4. F4. Represents Common Shares purchased by a trust with cash received under the issuer's Long-Term Incentive ("LTI") Bonus Plan, over which the filer has obtained investment control.

Key Figures

Shares purchased: 53 shares Purchase price per share: $76.20 per share Direct holdings after transaction: 1,805,789 shares +5 more

8 metrics

Shares purchased 53 shares Indirect purchase on September 7, 2026 under ESPP

Purchase price per share $76.20 per share ESPP-related common share purchase on September 7, 2026

Direct holdings after transaction 1,805,789 shares Common shares held directly by Yoo Chue-San after September 7, 2026

ESPP trust holdings after transaction 6,694 shares Common shares held under the Employee Stock Purchase Plan trust

LTI trust indirect holdings 7,036 shares Common shares held by a trust under the Long-Term Incentive Bonus Plan

Spouse indirect holdings 219,924 shares Common shares reported as held by spouse

Yuding Investment Co., Ltd. indirect holdings 851,908 shares Common shares held through Yuding Investment Co., Ltd.

Original NT dollar price NT$2,404.3453 per share Average purchase price translated at NT$31.552 to US$1

Key Terms

Employee Stock Purchase Plan, Long-Term Incentive ("LTI") Bonus Plan, indirect ownership, investment control

4 terms

Employee Stock Purchase Plan financial

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

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.

Long-Term Incentive ("LTI") Bonus Plan financial

"Represents Common Shares purchased by a trust with cash received under the issuer's Long-Term Incentive ("LTI") Bonus Plan"

indirect ownership financial

"Indirect holdings include shares via an ESPP trust, an LTI trust, spouse, and Yuding Investment Co., Ltd."

investment control financial

"over which the filer has obtained investment control"

FAQ

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

What insider transaction in TSM stock did VP Yoo Chue-San report?

VP Yoo Chue-San reported an indirect purchase of 53 TSM common shares on September 7, 2026 at $76.20 per share, executed by the administrator of the company’s Employee Stock Purchase Plan under predetermined terms and held in an ESPP trust.

How many TSM shares does VP Yoo Chue-San now hold directly?

After the reported transactions, Yoo Chue-San holds 1,805,789 TSM common shares directly, according to the Form 4 holding entry dated September 7, 2026.

What are VP Yoo Chue-San’s indirect holdings of TSM shares?

Indirect holdings include 6,694 shares via an ESPP trust, 7,036 shares via an LTI plan trust, 219,924 shares held by a spouse, and 851,908 shares held through Yuding Investment Co., Ltd..

Was the TSM share purchase by VP Yoo Chue-San made under a trading plan?

The purchase was executed by the administrator of the Employee Stock Purchase Plan under terms predetermined by the issuer. The Rule 10b5-1 plan checkbox is not marked as an affirmative plan in the filing data.

In what currency was the TSM purchase price originally determined?

The purchase price was translated from an average price of NT$2,404.3453 per share using an exchange rate of NT$31.552 to US$1, resulting in the reported $76.20 per share in U.S. dollars.

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

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Available on EDGAR 09/09/2026 - 06:09 AM Accepted by SEC EDGAR 09/09/2026 - 06:08 AM Learn about SEC filing dates

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^*

Yoo Chue-San

(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)								1,805,789	D
Common Shares (2330.TW)	09/07/2026(1)		P		53	A	$76.2(2)	6,694(3)	I	By ESPP Trust
Common Shares (2330.TW)								7,036(4)	I	By LTI Trust
Common Shares (2330.TW)								219,924	I	By Spouse
Common Shares (2330.TW)								851,908	I	By Yuding Investment 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").

4. Represents Common Shares purchased by a trust with cash received under the issuer's Long-Term Incentive ("LTI") Bonus Plan, over which the filer has obtained investment control.

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)