TSM (NYSE: TSM) VP Bor-Zen Tien adds 2,000 shares in open-market purchases

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD VP Bor-Zen Tien reported open-market share purchases. On June 29, he bought 1,000 Common Shares (2330.TW) directly at $76.64 per share, bringing his directly held common shares to 12,051. On June 30, a separate account owned by his spouse bought 1,000 Common Shares at $75.70, reported as indirect ownership. The filing also shows post-transaction holdings of 107 American Depositary Shares directly and additional indirect common-share holdings through an immediate family member and an Employee Stock Purchase Plan trust.

Insider Trade Summary

Net Buyer: 2,000 shares ($152,340)

Net Buy 5 txns

Insider Tien Bor-Zen

Role VP

Bought 2,000 shs ($152K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW)	1,000	$75.70	$76K
Purchase	Common Shares (2330.TW)	1,000	$76.64	$77K
holding	American Depositary Shares (TSM)	--	--	--
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 1,000 shares (Indirect, By Spouse); Common Shares (2330.TW) — 12,051 shares (Direct); American Depositary Shares (TSM) — 107 shares (Direct)

Footnotes (1)

1. The price was translated from New Taiwan dollars, NT$2,440, at the rate of NT$31.837 to US$1. Each American Depositary Share represents five (5) Common Shares. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP"). The price was translated from New Taiwan dollars, NT$2,410, at the rate of NT$31.837 to US$1.

Key Figures

Direct purchase shares: 1,000 shares Spouse purchase shares: 1,000 shares Direct common shares after trade: 12,051 shares +5 more

8 metrics

Direct purchase shares 1,000 shares Common Shares (2330.TW) bought on June 29 at $76.64

Spouse purchase shares 1,000 shares Common Shares (2330.TW) bought on June 30 at $75.70

Direct common shares after trade 12,051 shares Total Common Shares (2330.TW) held directly after June 29 purchase

Direct ADS holdings 107 ADS American Depositary Shares (TSM) held directly as of June 29

ESPP Trust common shares 188 shares Common Shares held indirectly by ESPP Trust after June 29

Immediate family common shares 67 shares Common Shares held indirectly by immediate family member after June 29

FX rate used NT$31.837 to US$1 Used to translate NT$2,440 and NT$2,410 share prices

ADS-to-common share ratio 1 ADS : 5 common shares Each ADS represents five Common Shares

Key Terms

open-market purchase, American Depositary Shares, Employee Stock Purchase Plan, indirect ownership, +1 more

5 terms

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.

American Depositary Shares financial

"security_title": "American Depositary Shares (TSM)""

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

Employee Stock Purchase Plan financial

"purchased and held under the 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.

indirect ownership financial

"ownership_type": "indirect""

transaction code financial

"transaction_code_description": "Unknown transaction code""

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/30/2026 - 06:25 AM Accepted by SEC EDGAR 06/30/2026 - 06:24 AM Learn about SEC filing dates

FAQ

What insider transactions did TSM VP Bor-Zen Tien report on this Form 4?

He reported two open-market purchases of TSM common shares totaling 2,000 shares. One 1,000-share lot was bought directly on June 29 at $76.64 per share, and another 1,000-share lot was bought on June 30 at $75.70 per share through his spouse.

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

After the June 29 purchase, he holds 12,051 Common Shares (2330.TW) directly. He also directly holds 107 American Depositary Shares (TSM), according to the post-transaction holdings reported, giving him both local-share and ADS exposure.

What indirect TSM shareholdings are reported for Bor-Zen Tien on this Form 4?

The filing shows 1,000 Common Shares held indirectly via his spouse, 67 Common Shares held by an immediate family member, and 188 Common Shares held by an ESPP Trust under the company’s Employee Stock Purchase Plan.

What are the reported purchase prices for Tien’s recent TSM share buys?

The June 29 direct purchase of 1,000 Common Shares was at $76.64 per share. The June 30 spouse account purchase of 1,000 Common Shares was at $75.70 per share, with both prices translated from New Taiwan dollars using a stated exchange rate.

How do TSM American Depositary Shares relate to the company’s common shares?

Each American Depositary Share (ADS) of TSM represents five (5) Common Shares. The Form 4 notes this ratio explicitly, and shows Bor-Zen Tien holding 107 ADS directly in addition to his directly and indirectly held common shares.

How were the U.S. dollar prices for TSM share purchases calculated in this Form 4?

The filing explains that the U.S. dollar prices were translated from New Taiwan dollar amounts of NT$2,440 and NT$2,410 using an exchange rate of NT$31.837 to US$1, providing transparency on the conversion used.

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)
06/29/2026

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)	06/29/2026		P		1,000	A	$76.64(1)	12,051	D
American Depositary Shares (TSM)(2)								107	D
Common Shares (2330.TW)								188(3)	I	By ESPP Trust
Common Shares (2330.TW)	06/30/2026		P		1,000	A	$75.7(4)	1,000	I	By Spouse
Common Shares (2330.TW)								67	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. The price was translated from New Taiwan dollars, NT$2,440, at the rate of NT$31.837 to US$1.

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

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

4. The price was translated from New Taiwan dollars, NT$2,410, at the rate of NT$31.837 to US$1.

Remarks:

	/s/ Jen-Chau Huang, as attorney-in-fact	06/30/2026
	** 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)