Taiwan Semiconductor controller buys 31 shares

Other reported positions on October 7, 2026 included 5,367 shares directly, 363 held by Chen’s spouse and 8,000 held by Homewarm Advisory Co., Ltd.

Rhea-AI Filing Summary

Taiwan Semiconductor Manufacturing Co., Ltd. (TSM) Controller Chih-Ho Chen reported a purchase of 31 common shares on October 7, 2026, through the issuer’s Employee Stock Purchase Plan (ESPP). The plan administrator purchased the shares on Chen’s behalf under terms predetermined by the issuer. The translated average price was US$79.3900 per share, and the ESPP Trust held 233 shares following the purchase.

Insider Trade Summary

Net Buyer: 31 shares

Net Buy 4 txns

Insider Chen Chih-Ho

Role Controller

Bought 31 shs ($2K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) F1, F2, F3	31	$79.39	$2K
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 233 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 5,367 shares (Direct); Common Shares (2330.TW) — 363 shares (Indirect, By Spouse); Common Shares (2330.TW) — 8,000 shares (Indirect, By Homewarm Advisory Co., Ltd.)

Footnotes (3)

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

Key Figures

Common shares purchased: 31 shares Translated average price: US$79.3900 per share ESPP Trust holding following purchase: 233 shares +5 more

8 metrics

Common shares purchased 31 shares October 7, 2026, through the issuer’s Employee Stock Purchase Plan

Translated average price US$79.3900 per share October 7, 2026 purchase

ESPP Trust holding following purchase 233 shares Reported following the October 7, 2026 purchase

Direct holdings 5,367 shares Reported October 7, 2026

Shares held by spouse 363 shares Reported October 7, 2026

Shares held by Homewarm Advisory Co., Ltd. 8,000 shares Reported October 7, 2026

Average purchase price in New Taiwan dollars NT$2,524.2277 Translated to US$79.3900 per share

Currency conversion rate NT$31.795 per US$1 Rate used to translate the average purchase price

Key Terms

Employee Stock Purchase Plan, average purchase price, New Taiwan dollars

3 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.

average purchase price financial

"average purchase price of NT$2,524.2277"

New Taiwan dollars financial

"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.

FAQ

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

How many TSM shares did Controller Chih-Ho Chen purchase?

The ESPP administrator purchased 31 common shares on Chih-Ho Chen’s behalf on October 7, 2026, at a translated average price of US$79.3900 per share. The price was translated from NT$2,524.2277 at NT$31.795 per US$1, and the shares were purchased under terms predetermined by the issuer. No Rule 10b5-1 plan is reported.

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

Available on EDGAR 10/08/2026 - 06:12 AM Accepted by SEC EDGAR 10/08/2026 - 06:11 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^*

Chen Chih-Ho

(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)
	Controller

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)
			Code	V	Amount	(A) or (D)	Price
Common Shares (2330.TW)								5,367	D
Common Shares (2330.TW)	10/07/2026(1)		P		31	A	$79.39(2)	233	I	By ESPP Trust(3)
Common Shares (2330.TW)								363	I	By Spouse
Common Shares (2330.TW)								8,000	I	By Homewarm Advisory 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$2,524.2277 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").

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)