What other TSM common share holdings does Bor-Zen Tien report on this Form 4?

As of May 19, 2026, Tien reports direct ownership of 11,051 common shares. He also has indirect holdings of 60 common shares held by an immediate family member and 145 common shares held by an ESPP trust, in addition to his American Depositary Shares position.

What does each TSM American Depositary Share represent according to the Form 4 footnotes?

Each American Depositary Share represents five common shares of TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD. This ratio means Tien’s 107 ADS correspond economically to 535 common shares, separate from his directly and indirectly held common shares reported in the same filing.

Are any of Bor-Zen Tien’s TSM common shares held through employee plans or related parties?

Yes. The filing notes 145 common shares are held under the issuer’s Employee Stock Purchase Plan through an ESPP trust. It also shows 60 common shares held indirectly by an immediate family member, in addition to his directly owned common and ADS positions.

TSMC VP Tien Bor-Zen buys 17 ADS

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD VP Bor-Zen Tien reported open-market purchases of 17 American Depositary Shares, buying 10 ADS at 391.8064 per share on 2026-05-19 and 7 ADS at 400.0000 per share on 2026-05-20.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

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Form Type

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD VP Bor-Zen Tien reported open-market purchases of 17 American Depositary Shares, buying 10 ADS at 391.8064 per share on 2026-05-19 and 7 ADS at 400.0000 per share on 2026-05-20. Following these trades, he directly holds 107 ADS, with each ADS representing five common shares. As of 2026-05-19, he also directly holds 11,051 common shares and has additional indirect common share holdings through an immediate family member and an ESPP trust, indicating these ADS purchases are small relative to his overall position.

Insider Trade Summary

Net Buyer: 17 shares

Net Buy 5 txns

Insider Tien Bor-Zen

Role VP

Bought 17 shs ($7K)

Type	Security	Shares	Price	Value
Purchase	American Depositary Shares (TSM)	7	$400.00	$3K
Purchase	American Depositary Shares (TSM)	10	$391.8064	$4K
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--
holding	Common Shares (2330.TW)	--	--	--

Holdings After Transaction: American Depositary Shares (TSM) — 107 shares (Direct); Common Shares (2330.TW) — 11,051 shares (Direct); Common Shares (2330.TW) — 145 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 60 shares (Indirect, By Immediate Family Member)

Footnotes (2)

F1. Each American Depositary Share represents five (5) Common Shares.
F2. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").

Key Figures

ADS purchased May 19, 2026: 10 ADS at 391.8064 per share ADS purchased May 20, 2026: 7 ADS at 400.0000 per share Total ADS after transactions: 107 ADS +5 more

8 metrics

ADS purchased May 19, 2026 10 ADS at 391.8064 per share Open-market purchase, American Depositary Shares (TSM)

ADS purchased May 20, 2026 7 ADS at 400.0000 per share Open-market purchase, American Depositary Shares (TSM)

Total ADS after transactions 107 ADS Directly held following May 20, 2026 purchase

Direct common shares 11,051 shares Direct TSM common share holdings as of May 19, 2026

Indirect family holdings 60 common shares Held by immediate family member, indirect ownership

ESPP trust holdings 145 common shares Common shares purchased and held under ESPP trust

ADS to common ratio 1 ADS = 5 common shares From footnote on American Depositary Shares

Net ADS bought 17 ADS Net open-market purchases reported, Form 4 transactionSummary

Key Terms

American Depositary Shares, Employee Stock Purchase Plan, indirect ownership, immediate family member, +1 more

5 terms

American Depositary Shares financial

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

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

"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.

indirect ownership financial

"Common Shares (2330.TW) held with nature of ownership noted as indirect, including by immediate family member and by ESPP Trust."

immediate family member financial

"Nature of ownership is described as "By Immediate Family Member" for 60 common shares."

ESPP Trust financial

"Nature of ownership is listed as "By ESPP Trust" for 145 common shares."

FAQ

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

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

Bor-Zen Tien reported buying 17 American Depositary Shares in open-market transactions. He purchased 10 ADS at 391.8064 per share on May 19, 2026 and 7 ADS at 400.0000 per share on May 20, 2026, increasing his direct ADS holdings.

How many TSM American Depositary Shares does Bor-Zen Tien hold after these purchases?

After the reported purchases, Bor-Zen Tien directly holds 107 American Depositary Shares. Each ADS represents five common shares of TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD, so these ADS complement his larger direct and indirect common share holdings disclosed in the filing.

How significant are the 17 ADS TSM purchases compared with Bor-Zen Tien’s total holdings?

The 17 ADS purchases are relatively small compared with Tien’s overall stake. He holds 107 ADS after the trades plus 11,051 directly held common shares and additional indirect common share positions, so the new ADS purchases modestly increase an already established ownership base.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/21/2026 - 07:21 AM EDT

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Shares (2330.TW)								11,051	D
American Depositary Shares (TSM)⁽¹⁾	05/19/2026		P	V	10	A	$391.8064	100	D
American Depositary Shares (TSM)⁽¹⁾	05/20/2026		P	V	7	A	$400	107	D
Common Shares (2330.TW)								145⁽²⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

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

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

Remarks:

	/s/ Jen-Chau Huang, as attorney-in-fact	05/21/2026
	** 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)

Source: View Original Filing on SEC EDGAR