Taiwan Semiconductor VP buys 48 shares at $76.20

TSMC vice president Bor-Zen Tien reported indirect open-market style ESPP-related purchases and updated direct and indirect holdings in both common shares and ADSs.

Available on EDGAR 09/09/2026 - 06:08 AM EDT Accepted by SEC EDGAR 09/09/2026 - 06:07 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) reported that Vice President Bor-Zen Tien indirectly purchased additional equity on September 7, 2026. An administrator for the company’s Employee Stock Purchase Plan bought 43 Common Shares (2330.TW) for an ESPP trust and 5 Common Shares for an immediate family member, both at $76.20 per share, with the U.S. price translated from an average purchase price of NT$2,404.3453 at a rate of NT$31.552 to US$1. These purchases were made pursuant to terms predetermined by the issuer and no Rule 10b5-1 trading plan is reported.

Following these transactions, Tien is reported as holding 313 Common Shares indirectly via the ESPP trust and 85 Common Shares indirectly through an immediate family member, along with direct holdings of 14,051 Common Shares and 132 American Depositary Shares, plus 5,000 Common Shares held indirectly through a spouse. Each American Depositary Share represents five Common Shares.

Insider Trade Summary

Net Buyer: 48 shares

Net Buy 2 txns

Insider Tien Bor-Zen

Role VP

Bought 48 shs ($4K)

Increase in Position 13.7%

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) F2, F3, F4	43	$76.20	$3K
Purchase	Common Shares (2330.TW) F5, F3	5	$76.20	$381.00
Holding	Common Shares (2330.TW)	--	--	--
Holding	American Depositary Shares (TSM) F1	--	--	--
Holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 313 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 85 shares (Indirect, By Immediate Family Member); Common Shares (2330.TW) — 14,051 shares (Direct); American Depositary Shares (TSM) — 132 shares (Direct); Common Shares (2330.TW) — 5,000 shares (Indirect, By Spouse)

Holdings Before and After: Common Shares (2330.TW), 270 to 313 shares (Indirect, By ESPP Trust); Common Shares (2330.TW), 80 to 85 shares (Indirect, By Immediate Family Member)

Other Insiders: 29 other insiders reported open-market purchases of this stock in the 30 days up to this filing.

Footnotes (5)

1. F1. Each American Depositary Share represents five (5) Common Shares.
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$2,404.3453 in New Taiwan dollars, at the rate of NT$31.552 to US$1.
4. F4. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
5. F5. Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer's Immediate Family Member, who is a TSMC employee, pursuant to terms predetermined by the issuer.

Key Figures

Shares purchased via ESPP trust: 43 Common Shares Shares purchased for immediate family member: 5 Common Shares Purchase price per share: $76.20 per share +5 more

8 metrics

Shares purchased via ESPP trust 43 Common Shares Indirect purchase on September 7, 2026 for ESPP trust

Shares purchased for immediate family member 5 Common Shares Indirect purchase on September 7, 2026 for immediate family member

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

Indirect ESPP trust holdings after transaction 313 Common Shares Indirectly held via ESPP trust following purchase

Indirect immediate-family holdings after transaction 85 Common Shares Indirectly held through immediate family member following purchase

Direct common share holdings 14,051 Common Shares Reported direct holdings of Bor-Zen Tien

ADS holdings 132 American Depositary Shares Direct ADS position, each ADS represents five Common Shares

Indirect spouse holdings 5,000 Common Shares Indirectly held through spouse

Key Terms

Employee Stock Purchase Plan ("ESPP"), American Depositary Share, Immediate Family Member, New Taiwan dollars, +1 more

5 terms

Employee Stock Purchase Plan ("ESPP") financial

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

American Depositary Share financial

"Each American Depositary Share represents five (5) Common Shares"

An American Depositary Share (ADS) is a U.S.-listed certificate that represents a specified number of shares in a foreign company, held by a custodian bank; it works like a receipt that allows U.S. investors to buy and trade foreign equity on American exchanges without dealing with another country’s markets. Investors care because ADSs make foreign stocks easier to access, improve liquidity and settlement in dollars, and can affect dividend payments, voting rights and regulatory oversight compared with buying the underlying foreign shares directly.

Immediate Family Member regulatory

"on behalf of the filer's Immediate Family Member, who is a TSMC employee"

New Taiwan dollars financial

"average purchase price of NT$2,404.3453 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.

Rule 10b5-1 regulatory

"no Rule 10b5-1 trading plan is reported"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

What did TSM vice president Bor-Zen Tien buy in this Form 4 filing for TSM?

Bor-Zen Tien reported indirect purchases of 43 Common Shares for an ESPP trust and 5 Common Shares for an immediate family member on September 7, 2026, at a translated U.S. price of $76.20 per share.

How many TSM common shares does Bor-Zen Tien hold after these transactions?

After the reported transactions, Bor-Zen Tien holds 14,051 Common Shares directly, 313 Common Shares indirectly via an ESPP trust, 85 Common Shares indirectly through an immediate family member, and 5,000 Common Shares indirectly through a spouse.

What are Bor-Zen Tien’s American Depositary Share (ADS) holdings of TSM?

Bor-Zen Tien is reported as holding 132 American Depositary Shares directly. Each American Depositary Share represents five Common Shares, according to the filing’s footnote.

At what price were the TSM shares acquired in the Form 4 transactions?

The reported purchase price was $76.20 per share, 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.

Were the TSM share purchases by Bor-Zen Tien made under a Rule 10b5-1 plan?

No. The filing indicates that no Rule 10b5-1 trading plan is affirmed. The shares were purchased by the Employee Stock Purchase Plan administrator under terms predetermined by the issuer.

How were the ESPP-related TSM share purchases for Bor-Zen Tien described?

The filing states that common shares were purchased by the administrator of the Employee Stock Purchase Plan on behalf of Bor-Zen Tien and his immediate family member, pursuant to terms predetermined by the issuer, and are held under the ESPP.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

Tien Bor-Zen

(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)
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)								14,051	D
American Depositary Shares (TSM)(1)								132	D
Common Shares (2330.TW)	09/07/2026(2)		P		43	A	$76.2(3)	313(4)	I	By ESPP Trust
Common Shares (2330.TW)								5,000	I	By Spouse
Common Shares (2330.TW)	09/07/2026(5)		P	V	5	A	$76.2(3)	85	I	By Immediate Family Member

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. Each American Depositary Share represents five (5) Common Shares.

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$2,404.3453 in New Taiwan dollars, at the rate of NT$31.552 to US$1.

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

5. Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer's Immediate Family Member, who is a TSMC employee, pursuant to terms predetermined by the issuer.

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)