TSMC VP buys 58 shares via employee stock plan

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD vice president Tzu-Sou Chuang reported an open-market-style purchase of 58 Common Shares (2330.TW) on behalf of his account at an average price of $57.87 per share.

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD vice president Tzu-Sou Chuang reported an open-market-style purchase of 58 Common Shares (2330.TW) on behalf of his account at an average price of $57.87 per share. The shares were bought by the administrator of the company’s Employee Stock Purchase Plan under predetermined terms.

After this transaction, he indirectly holds 5,620 Common Shares through the ESPP trust and 7,036 Common Shares through a Long-Term Incentive bonus plan trust, in addition to 2,695,165 Common Shares held directly. The filing shows a small net increase in his overall ownership.

Insider Trade Summary

Net Buyer: 58 shares

Net Buy 3 txns

Insider Chuang Tzu-Sou

Role VP

Bought 58 shs ($3K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW)	58	$57.87	$3K
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 5,620 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 2,695,165 shares (Direct); Common Shares (2330.TW) — 7,036 shares (Indirect, By LTI Trust)

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$1,837.2789 in New Taiwan dollars, at the rate of NT$31.748 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: 58 shares Purchase price: $57.87 per share Direct holdings after transaction: 2,695,165 shares +4 more

7 metrics

Shares purchased 58 shares Common Shares (2330.TW) acquired under ESPP on 2026-04-09

Purchase price $57.87 per share Average purchase price translated from NT$ on 2026-04-09

Direct holdings after transaction 2,695,165 shares Common Shares held directly after 2026-04-09

ESPP trust holdings 5,620 shares Common Shares held under Employee Stock Purchase Plan

LTI trust holdings 7,036 shares Common Shares held via Long-Term Incentive Bonus Plan trust

NT dollar purchase price NT$1,837.2789 Average ESPP purchase price in New Taiwan dollars

FX rate NT$31.748 to US$1 Exchange rate used to translate purchase price

Key Terms

Employee Stock Purchase Plan, ESPP, Long-Term Incentive ("LTI") Bonus Plan, trust

4 terms

Employee Stock Purchase Plan financial

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

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 financial

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

An Employee Stock Purchase Plan (ESPP) is a company program that lets employees buy the company’s shares at a reduced price, usually by setting aside a small portion of their pay over time. It matters to investors because it encourages employees to own part of the business—like giving staff a discounted membership— which can boost commitment and performance, while also potentially increasing the number of shares available and affecting shareholder value.

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"

trust financial

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

A trust is a legal setup in which one party (the trustee) holds and manages assets—like cash, stocks or property—on behalf of other people (beneficiaries) according to instructions from the person who created it (the grantor). Think of it as a locked box with a keyholder who must follow written rules; for investors it matters because trusts influence who controls and benefits from assets, affect taxes and succession, and can change how quickly or transparently shares are bought, sold or voted.

FAQ

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

What insider transaction did TSM VP Tzu-Sou Chuang report on this Form 4?

Tzu-Sou Chuang reported a purchase of 58 Common Shares (2330.TW) at an average price of $57.87 per share. The shares were acquired by the Employee Stock Purchase Plan administrator on his behalf under predetermined plan terms.

How many TSM shares does Tzu-Sou Chuang hold after this reported transaction?

After the transaction, Tzu-Sou Chuang holds 2,695,165 Common Shares directly, 5,620 Common Shares indirectly through the Employee Stock Purchase Plan trust, and 7,036 Common Shares indirectly through a Long-Term Incentive bonus plan trust.

Was the TSM share purchase by Tzu-Sou Chuang a discretionary open-market buy?

The filing uses an open-market purchase code, but footnotes explain the 58-share purchase was made by the Employee Stock Purchase Plan administrator on predetermined terms, rather than a fully discretionary market trade by Tzu-Sou Chuang.

What currency details are disclosed for TSM VP Tzu-Sou Chuang’s share purchase price?

The average purchase price of $57.87 per share was translated from NT$1,837.2789 using an exchange rate of NT$31.748 to US$1, according to the filing footnotes describing the Employee Stock Purchase Plan transaction.

How are TSM shares held for Tzu-Sou Chuang under employee plans?

The filing states that 5,620 Common Shares are purchased and held under the Employee Stock Purchase Plan, while 7,036 Common Shares are held by a trust funded through the company’s Long-Term Incentive Bonus Plan, over which he has investment control.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 04/13/2026 - 07:32 AM EDT 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^*

Chuang Tzu-Sou

(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)
04/09/2026

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)								2,695,165	D
Common Shares (2330.TW)	04/09/2026(1)		P	V	58	A	$57.87(2)	5,620(3)	I	By ESPP Trust
Common Shares (2330.TW)								7,036(4)	I	By LTI Trust

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$1,837.2789 in New Taiwan dollars, at the rate of NT$31.748 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	04/13/2026
	** 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)