Taiwan Semiconductor: 46-share purchase for VP

The reported US$79.39 per-share price was translated from an average purchase price of NT$2,524.2277 at NT$31.795 to US$1.

Rhea-AI Filing Summary

Taiwan Semiconductor Manufacturing Co. Ltd. (TSM) reported that its ESPP administrator purchased 46 common shares for VP Tzu-Sou Chuang on October 7, 2026, at $79.39 per share. The shares were held through the issuer's ESPP Trust, with 47 shares reported after the purchase; as of October 7, 2026, the form also lists 1,516,228 common shares held directly.

Insider Trade Summary

Net Buyer: 46 shares

Net Buy 2 txns

Insider Chuang Tzu-Sou

Role VP

Bought 46 shs ($4K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) F2, F3, F1, F4	46	$79.39	$4K
holding	Common Shares (2330.TW) F1	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 47 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 1,516,228 shares (Direct)

Footnotes (4)

1. F1. On September 30, 2026, 5,852 and 7,036 Common Shares previously held indirectly through the ESPP Trust and LTI Trust, respectively, were transferred to an account directly held by the reporting person. These transfers reflect only a change in the form of beneficial ownership of the shares and are exempt from reporting under Rule 16a-13 of the Securities Exchange Act of 1934, as amended.
2. F2. 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.
3. F3. 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.
4. F4. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").

Key Figures

Common Shares purchased: 46 shares Purchase price: $79.39 per share Common Shares held indirectly: 47 shares +3 more

6 metrics

Common Shares purchased 46 shares Purchased on October 7, 2026, for VP Tzu-Sou Chuang through the issuer's ESPP.

Purchase price $79.39 per share Price reported for the October 7, 2026 purchase.

Common Shares held indirectly 47 shares Reported through ESPP Trust following the October 7, 2026 purchase.

Common Shares held directly 1,516,228 shares Listed as of October 7, 2026.

Shares transferred from ESPP Trust 5,852 shares Previously held indirectly; transferred to a directly held account on September 30, 2026.

Shares transferred from LTI Trust 7,036 shares Previously held indirectly; transferred to a directly held account on September 30, 2026.

Key Terms

Employee Stock Purchase Plan, beneficial ownership, Rule 16a-13

3 terms

Employee Stock Purchase Plan financial

"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.

beneficial ownership regulatory

"change in the form of beneficial ownership"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Rule 16a-13 regulatory

"exempt from reporting under Rule 16a-13"

FAQ

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

How many TSM shares were purchased for Tzu-Sou Chuang, and at what price?

The ESPP administrator purchased 46 common shares on behalf of VP Tzu-Sou Chuang on October 7, 2026, at $79.39 per share. The issuer's Employee Stock Purchase Plan had terms predetermined by the issuer. The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars at NT$31.795 to US$1. No Rule 10b5-1 plan is reported.

What share transfers did TSM report for Tzu-Sou Chuang?

On September 30, 2026, 5,852 common shares previously held indirectly through the ESPP Trust and 7,036 common shares previously held indirectly through the LTI Trust were transferred to an account directly held by VP Tzu-Sou Chuang. The transfers reflected only a change in the form of beneficial ownership and were exempt from reporting under Rule 16a-13.

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

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Available on EDGAR 10/08/2026 - 06:13 AM Accepted by SEC EDGAR 10/08/2026 - 06:12 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^*

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)
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)								1,516,228(1)	D
Common Shares (2330.TW)	10/07/2026(2)		P		46	A	$79.39(3)	47(1)	I	By ESPP Trust(4)

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. On September 30, 2026, 5,852 and 7,036 Common Shares previously held indirectly through the ESPP Trust and LTI Trust, respectively, were transferred to an account directly held by the reporting person. These transfers reflect only a change in the form of beneficial ownership of the shares and are exempt from reporting under Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

2. 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.

3. 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.

4. 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)