Taiwan Semiconductor plan buys 50 shares for VP Yoo

Q: How was the TSM ESPP purchase price calculated?

The reported US$79.3900 per-share price was translated from an average purchase price of NT$2,524.2277 in New Taiwan dollars, at a rate of NT$31.795 to US$1.

Q: What does the TSM LTI Trust holding represent?

The reported holding was 7,036 common shares. The trust purchased the shares with cash received under the issuer’s Long-Term Incentive (LTI) Bonus Plan, and Chue-San Yoo has investment control over the shares.

The reported position includes 6,744 shares in the ESPP Trust, alongside direct and other indirect holdings.

Filing Impact

(Neutral)

Filing Sentiment

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Rhea-AI Filing Summary

Taiwan Semiconductor Manufacturing Co. Ltd. VP Chue-San Yoo reported that the issuer’s Employee Stock Purchase Plan administrator purchased 50 common shares on Yoo’s behalf on October 7, 2026, at US$79.3900 per share. The shares are held under the ESPP, with 6,744 shares reported in the ESPP Trust after the purchase. No Rule 10b5-1 plan is reported. Other reported positions on October 7, 2026, were 1,805,789 shares directly, 7,036 through the LTI Trust, 219,924 through a spouse, and 851,908 through Yuding Investment Co., Ltd.

Insider Trade Summary

Net Buyer: 50 shares

Net Buy 5 txns

Insider Yoo Chue-San

Role VP

Bought 50 shs ($4K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) ^{F1, F2, F3}	50	$79.39	$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) — 6,744 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)

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.
F2. The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
F3. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
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

Common shares purchased: 50 shares Purchase price: US$79.3900 per share ESPP Trust holdings: 6,744 shares +4 more

7 metrics

Common shares purchased 50 shares Purchased on behalf of VP Chue-San Yoo by the ESPP administrator on October 7, 2026.

Purchase price US$79.3900 per share Translated from an average purchase price of NT$2,524.2277 at NT$31.795 to US$1.

ESPP Trust holdings 6,744 shares Reported after the purchase on October 7, 2026.

Direct holdings 1,805,789 shares Reported on October 7, 2026.

LTI Trust holdings 7,036 shares Reported on October 7, 2026.

Spouse holdings 219,924 shares Reported indirectly through a spouse on October 7, 2026.

Yuding Investment Co., Ltd. holdings 851,908 shares Reported indirectly through Yuding Investment Co., Ltd. on October 7, 2026.

Key Terms

Employee Stock Purchase Plan, Long-Term Incentive ("LTI") Bonus Plan, New Taiwan dollars, investment control

4 terms

Employee Stock Purchase Plan financial

"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.

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

"issuer’s Long-Term Incentive ("LTI") Bonus Plan"

New Taiwan dollars financial

"NT$2,524.2277 in New Taiwan dollars"

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.

investment control financial

"the filer has obtained investment control"

FAQ

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

How many TSM shares did VP Chue-San Yoo buy, and at what price?

On October 7, 2026, the issuer’s Employee Stock Purchase Plan administrator purchased 50 common shares on behalf of VP Chue-San Yoo at US$79.3900 per share. The shares were held under the ESPP, and 6,744 shares were reported in the ESPP Trust after the purchase. No Rule 10b5-1 plan is reported.

How was the TSM ESPP purchase price calculated?

The reported US$79.3900 per-share price was translated from an average purchase price of NT$2,524.2277 in New Taiwan dollars, at a rate of NT$31.795 to US$1.

What does the TSM LTI Trust holding represent?

The reported holding was 7,036 common shares. The trust purchased the shares with cash received under the issuer’s Long-Term Incentive (LTI) Bonus Plan, and Chue-San Yoo has investment control over the shares.

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

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Available on EDGAR 10/08/2026 - 06:36 AM Accepted by SEC EDGAR 10/08/2026 - 06:35 AM

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)
10/07/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Shares (2330.TW)								1,805,789	D
Common Shares (2330.TW)	10/07/2026⁽¹⁾		P		50	A	$79.39⁽²⁾	6,744	I	By ESPP Trust⁽³⁾
Common Shares (2330.TW)								7,036	I	By LTI Trust⁽⁴⁾
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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 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	10/08/2026
	** 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)

Source: View Original Filing on SEC EDGAR