TSMC CEO buys 149 shares via employee plan

TSM’s chairman and CEO reported a small ESPP-related purchase while disclosing multi-million-share direct and indirect ownership positions.

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) reported that Chairman and CEO Che-Chia Wei had 149 common shares purchased on September 7, 2026 through the administrator of the company’s Employee Stock Purchase Plan, at $76.20 per share, held indirectly via an ESPP trust pursuant to predetermined plan terms. Following this transaction, reported indirect ESPP-related holdings were 18,136 shares, in addition to 7,656,724 shares held directly, 285,245 shares held through a Long-Term Incentive bonus plan trust, and 700,261 shares held indirectly by his spouse.

Insider Trade Summary

Net Buyer: 149 shares

Net Buy 4 txns

Insider Wei Che-Chia

Role Chairman and CEO

Bought 149 shs ($11K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) F1, F2, F3	149	$76.20	$11K
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW) F4	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 18,136 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 7,656,724 shares (Direct); Common Shares (2330.TW) — 285,245 shares (Indirect, By LTI Trust); Common Shares (2330.TW) — 700,261 shares (Indirect, By Spouse)

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: 149 shares Purchase price per share: $76.20 per share Direct holdings after transaction: 7,656,724 shares +4 more

7 metrics

Shares purchased 149 shares Common Shares (2330.TW) purchased on September 7, 2026 via ESPP administrator

Purchase price per share $76.20 per share Translated from NT$2,404.3453 at NT$31.552 to US$1 for the ESPP purchase

Direct holdings after transaction 7,656,724 shares Common Shares held directly by Che-Chia Wei after the reported transactions

ESPP trust holdings after transaction 18,136 shares Common Shares held under the issuer’s Employee Stock Purchase Plan for the filer

LTI trust holdings 285,245 shares Common Shares held by a trust funded under the Long-Term Incentive Bonus Plan

Spousal indirect holdings 700,261 shares Common Shares held indirectly by the filer’s spouse

FX rate used NT$31.552 to US$1 Exchange rate used to translate NT$2,404.3453 average ESPP purchase price into US dollars

Key Terms

Employee Stock Purchase Plan, Long-Term Incentive Bonus Plan, investment control

3 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 Bonus Plan financial

"purchased by a trust with cash received under the issuer's Long-Term Incentive"

investment control financial

"over which the filer has obtained investment control"

FAQ

What insider transaction did TSM report for Chairman and CEO Che-Chia Wei?

Che-Chia Wei had 149 common shares of TSM purchased on September 7, 2026 through the administrator of the Employee Stock Purchase Plan, at a translated price of $76.20 per share, with the shares held indirectly via an ESPP trust pursuant to predetermined terms.

How many TSM shares does Che-Chia Wei hold directly after this Form 4?

After the reported transactions, Che-Chia Wei is shown as holding 7,656,724 TSM common shares directly. This direct position is separate from his indirect holdings through employee plans and his spouse.

What indirect TSM shareholdings are reported for Che-Chia Wei and related entities?

Indirect holdings include 18,136 shares under an ESPP trust, 285,245 shares held by a trust funded under the Long-Term Incentive Bonus Plan over which he has investment control, and 700,261 shares held indirectly by his spouse.

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

The filing’s Rule 10b5-1 checkbox is not affirmed, and there is no footnote stating the trade was made under a Rule 10b5-1 plan. The ESPP purchase was described as made by the plan administrator pursuant to predetermined terms of the Employee Stock Purchase Plan.

How was the purchase price for the TSM ESPP shares determined?

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

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Available on EDGAR 09/09/2026 - 06:08 AM Accepted by SEC EDGAR 09/09/2026 - 06:07 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^*

Wei Che-Chia

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman and CEO

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)								7,656,724	D
Common Shares (2330.TW)	09/07/2026(1)		P		149	A	$76.2(2)	18,136(3)	I	By ESPP Trust
Common Shares (2330.TW)								285,245(4)	I	By LTI Trust
Common Shares (2330.TW)								700,261	I	By Spouse

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)