TSMC (NYSE: TSM) vice president buys 2,000 shares in open market

Rhea-AI Filing Summary

Taiwan Semiconductor Manufacturing Company vice president Bor-Zen Tien reported open-market purchases of the company’s common shares. On May 19, 2026, he bought 2,000 common shares (2330.TW) in two transactions at prices of about $69.83 and $69.98 per share, translated from New Taiwan dollars.

The filing also shows indirect holdings of 60 common shares by an immediate family member and 145 common shares held through an Employee Stock Purchase Plan trust. In addition, he directly holds 90 American Depositary Shares of TSM, and each ADS represents five common shares.

Insider Trade Summary

Net Buyer: 2,000 shares ($139,810)

Net Buy 5 txns

Insider Tien Bor-Zen

Role VP

Bought 2,000 shs ($140K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW)	1,000	$69.98	$70K
Purchase	Common Shares (2330.TW)	1,000	$69.83	$70K
holding	American Depositary Shares (TSM)	--	--	--
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: Common Shares (2330.TW) — 10,051 shares (Direct, null); American Depositary Shares (TSM) — 90 shares (Direct, null); Common Shares (2330.TW) — 145 shares (Indirect, By ESPP Trust)

Footnotes (1)

1. The price was translated from New Taiwan dollars, NT$2,215, at the rate of NT$31.650 to US$1. The price was translated from New Taiwan dollars, NT$2,210, at the rate of NT$31.650 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").

Key Figures

Open-market purchase 1: 1,000 shares at $69.83 Open-market purchase 2: 1,000 shares at $69.98 Total shares bought: 2,000 common shares +4 more

7 metrics

Open-market purchase 1 1,000 shares at $69.83 Common Shares (2330.TW) on May 19, 2026

Open-market purchase 2 1,000 shares at $69.98 Common Shares (2330.TW) on May 19, 2026

Total shares bought 2,000 common shares Net open-market purchases in this filing

Immediate family holdings 60 common shares Indirect ownership by immediate family member

ESPP Trust holdings 145 common shares Indirect ownership via ESPP Trust

ADS holdings 90 ADS Directly held American Depositary Shares of TSM

ADS to common ratio 1 ADS = 5 common shares Per footnote on ADS structure

Key Terms

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

4 terms

open-market purchase financial

"transaction_action: open-market purchase for two common share trades"

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.

Employee Stock Purchase Plan financial

"Common Shares purchased and held under the 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.

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.

indirect ownership financial

"ownership_type: indirect, nature_of_ownership: By Immediate Family Member / By ESPP Trust"

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^*

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)
05/19/2026

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)	05/19/2026		P		1,000	A	$69.98(1)	10,051	D
Common Shares (2330.TW)	05/19/2026		P		1,000	A	$69.83(2)	11,051	D
American Depositary Shares (TSM)(3)								90	D
Common Shares (2330.TW)								145(4)	I	By ESPP Trust
Common Shares (2330.TW)								60	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$2,215, at the rate of NT$31.650 to US$1.

2. The price was translated from New Taiwan dollars, NT$2,210, at the rate of NT$31.650 to US$1.

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

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

Remarks:

	/s/ Jen-Chau Huang, as attorney-in-fact	05/19/2026
	** 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 VP Bor-Zen Tien report?

Bor-Zen Tien reported open-market purchases of 2,000 Taiwan Semiconductor Manufacturing common shares on May 19, 2026. The buys were split into two 1,000-share trades at prices near $70 per share, translated from New Taiwan dollars.

At what prices did the TSM VP buy common shares?

Bor-Zen Tien purchased 1,000 common shares at $69.83 and another 1,000 at $69.98 per share. These U.S. dollar prices were converted from NT$2,215 and NT$2,210 using an exchange rate of NT$31.650 to US$1.

How many Taiwan Semiconductor shares did the TSM VP buy in total?

The filing shows total open-market purchases of 2,000 common shares of Taiwan Semiconductor Manufacturing. These were executed as two separate 1,000-share transactions on May 19, 2026 at prices just under $70 per share in U.S. dollar terms.

What indirect holdings does the TSM VP report in this Form 4?

The Form 4 lists 60 common shares held indirectly by an immediate family member and 145 common shares held indirectly through an Employee Stock Purchase Plan (ESPP) Trust. These positions are reported as indirect ownership interests related to Bor-Zen Tien.

What American Depositary Share (ADS) holdings does the TSM VP have?

The filing shows Bor-Zen Tien directly owns 90 American Depositary Shares (ADS) of Taiwan Semiconductor Manufacturing. A footnote specifies that each ADS represents five common shares, linking the ADS position to the underlying Taiwan-listed shares.

How were the TSM share purchase prices converted to U.S. dollars?

The reported prices were translated from New Taiwan dollars using an exchange rate of NT$31.650 to US$1. One trade used a price of NT$2,215 and the other NT$2,210, producing U.S. dollar prices of about $69.83 and $69.98 per share.