Taiwan Semiconductor (NYSE: TSM) VP adds ESPP shares in small buy

Rhea-AI Filing Summary

Taiwan Semiconductor Manufacturing Co. VP Yao-Ching Ku reported a small share purchase through the company’s employee plan. On June 5, 2026, an administrator for the Employee Stock Purchase Plan bought 48 common shares at $76.01 per share for an ESPP trust benefiting Ku, under terms predetermined by the issuer.

After this transaction, reported holdings include 131,000 common shares held by Wei Liang Asset Management Co. Ltd., 73,396 shares held by Ku’s spouse, 30,851 shares held directly, and 48 shares held under the ESPP.

Insider Trade Summary

Net Buyer: 48 shares ($3,648)

Net Buy 4 txns

Insider Ku Yao-Ching

Role VP

Bought 48 shs ($4K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW)	48	$76.01	$4K
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 48 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 30,851 shares (Direct, null)

Footnotes (1)

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. The price was translated from the average purchase price of NT$2,392.5207 in New Taiwan dollars, at the rate of NT$31.475 to US$1. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").

Key Figures

Shares purchased: 48 shares Purchase price: $76.01 per share ESPP NT$ price: NT$2,392.5207 +5 more

8 metrics

Shares purchased 48 shares Common Shares (2330.TW) bought on June 5, 2026 via ESPP

Purchase price $76.01 per share Average U.S. dollar price for ESPP purchase

ESPP NT$ price NT$2,392.5207 Average purchase price in New Taiwan dollars per share

FX rate NT$31.475 to US$1 Exchange rate used to translate ESPP purchase price

Indirect holding via Wei Liang 131,000 shares Common Shares held by Wei Liang Asset Management Co. Ltd.

Spouse holding 73,396 shares Common Shares held by spouse as indirect ownership

Direct holding 30,851 shares Common Shares held directly by Yao-Ching Ku

ESPP holding 48 shares Common Shares purchased and held under the ESPP

Key Terms

Employee Stock Purchase Plan, ESPP Trust, open-market purchase, indirect ownership

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 Trust financial

"Common Shares (2330.TW) ... indirect ownership: By ESPP Trust"

open-market purchase financial

"transaction_action: open-market purchase"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

indirect ownership financial

"ownership_type: indirect; nature_of_ownership: By Wei Liang Asset Management Co. Ltd."

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Form 4 Insider Transactions: What Each Field Means →

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)
06/05/2026

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)	06/05/2026(1)		P	V	48	A	$76.01(2)	48(3)	I	By ESPP Trust
Common Shares (2330.TW)								73,396	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$2,392.5207 in New Taiwan dollars, at the rate of NT$31.475 to US$1.

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

Remarks:

	/s/ Shu-Hua Fang, as attorney-in-fact	06/09/2026
	** 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)

FAQ

What insider transaction did TSM (Taiwan Semiconductor) report for VP Yao-Ching Ku?

VP Yao-Ching Ku reported a small purchase of 48 common shares. The shares were bought on June 5, 2026 through the company’s Employee Stock Purchase Plan and held in an ESPP trust on predetermined terms set by the issuer.

At what price were the new Taiwan Semiconductor (TSM) shares acquired in this Form 4?

The 48 common shares were acquired at $76.01 per share. This U.S. dollar price reflects an average purchase price of NT$2,392.5207, translated at an exchange rate of NT$31.475 to US$1, as disclosed in the filing’s footnotes.

How many Taiwan Semiconductor (TSM) shares does VP Yao-Ching Ku hold after this transaction?

After the reported transaction, Ku is shown with 131,000 shares via Wei Liang Asset Management, 73,396 shares via spouse, 30,851 shares directly, and 48 shares under the ESPP. These positions combine direct and indirect ownership reported in the filing.

Was the Taiwan Semiconductor (TSM) share purchase by VP Ku an open-market transaction?

Yes. The filing classifies the 48-share acquisition as an open-market purchase. However, it was executed by the Employee Stock Purchase Plan administrator on Ku’s behalf, following terms that were predetermined by the issuer rather than a discretionary trade.

What role does the Employee Stock Purchase Plan (ESPP) play in this TSM Form 4 filing?

The ESPP enabled the purchase and holding of 48 common shares for VP Ku. An administrator bought the shares under preset plan terms, and they are held in an ESPP trust, illustrating compensation-related, programmatic accumulation rather than a large discretionary market trade.