Taiwan Semi VP boosts holdings with stock and ADS buys (NYSE: TSM)

Rhea-AI Filing Summary

Taiwan Semiconductor Manufacturing Co. Ltd. VP Bor-Zen Tien reported a series of purchase transactions. On 2026-07-21, he bought 1,000 Common Shares (2330.TW) directly at a price of 74.13 per share, bringing his direct common-share holdings to 13,051. On the same date, he also reported spouse-held purchases of 3,000 Common Shares in three 1,000-share blocks at prices of 73.98, 74.44, and 74.75 per share, all as indirect ownership "By Spouse." As of 2026-07-21 he additionally held 228 Common Shares indirectly through an ESPP trust and 73 Common Shares through an immediate family member. On 2026-07-20, he purchased 10 American Depositary Shares (TSM) at a price of 405 per ADS, increasing his direct ADS position to 117 ADSs, with each ADS representing five Common Shares. The filing does not indicate that these purchases were made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Net Buyer: 4,010 shares

Net Buy 7 txns

Insider Tien Bor-Zen

Role VP

Bought 4,010 shs ($301K)

Type	Security	Shares	Price	Value
Purchase	Common Shares (2330.TW) F1	1,000	$74.13	$74K
Purchase	Common Shares (2330.TW) F4	1,000	$73.98	$74K
Purchase	Common Shares (2330.TW) F5	1,000	$74.44	$74K
Purchase	Common Shares (2330.TW) F6	1,000	$74.75	$75K
holding	Common Shares (2330.TW) F3	--	--	--
holding	Common Shares (2330.TW)	--	--	--
Purchase	American Depositary Shares (TSM) F2	10	$405.00	$4K

Holdings After Transaction: Common Shares (2330.TW) — 13,051 shares (Direct); American Depositary Shares (TSM) — 117 shares (Direct); Common Shares (2330.TW) — 4,000 shares (Indirect, By Spouse); Common Shares (2330.TW) — 228 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 73 shares (Indirect, By Immediate Family Member)

Footnotes (6)

1. F1. The price was translated from New Taiwan dollars, NT$2,400, at the rate of NT$32.375 to US$1.
2. F2. Each American Depositary Share represents five (5) Common Shares.
3. F3. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
4. F4. The price was translated from New Taiwan dollars, NT$2,395, at the rate of NT$32.375 to US$1.
5. F5. The price was translated from New Taiwan dollars, NT$2,410, at the rate of NT$32.375 to US$1.
6. F6. The price was translated from New Taiwan dollars, NT$2,420, at the rate of NT$32.375 to US$1.

Key Figures

Direct common purchase: 1,000 Common Shares at 74.13 per share Spouse-held purchases: 1,000 Common Shares at 73.98; 1,000 at 74.44; 1,000 at 74.75 Direct common holdings: 13,051 Common Shares +5 more

8 metrics

Direct common purchase 1,000 Common Shares at 74.13 per share Purchased on 2026-07-21; direct ownership

Spouse-held purchases 1,000 Common Shares at 73.98; 1,000 at 74.44; 1,000 at 74.75 Three indirect purchases "By Spouse" on 2026-07-21

Direct common holdings 13,051 Common Shares Direct ownership after 2026-07-21 common-share purchase

ESPP trust holdings 228 Common Shares Indirect ownership "By ESPP Trust" as of 2026-07-21

Immediate family holdings 73 Common Shares Indirect ownership "By Immediate Family Member" as of 2026-07-21

ADS purchase 10 American Depositary Shares at 405 per ADS Purchased on 2026-07-20; each ADS represents five Common Shares

Direct ADS holdings 117 American Depositary Shares Direct ADS ownership after 2026-07-20 purchase

Net buy direction 4,010 securities bought transactionSummary shows net-buy across reported non-derivative purchases

Key Terms

American Depositary Shares, Employee Stock Purchase Plan, indirect ownership, ESPP Trust

4 terms

American Depositary Shares financial

"American Depositary Shares (TSM) on 2026-07-20"

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"

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

"indirect ownership "By Spouse" and by immediate family member"

ESPP Trust financial

"total_shares_following_transaction of 228, indirect, nature of ownership "By ESPP Trust""

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/23/2026 - 06:16 AM Accepted by SEC EDGAR 07/23/2026 - 06:16 AM Learn about SEC filing dates

FAQ

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

Bor-Zen Tien reported five purchase transactions: four blocks totaling 4,000 Common Shares (2330.TW) on 2026-07-21 and 10 American Depositary Shares (TSM) on 2026-07-20, plus updated indirect holdings through an ESPP trust and an immediate family member.

How many TSM common shares does Bor-Zen Tien now hold directly and indirectly?

After these transactions, Bor-Zen Tien holds 13,051 Common Shares directly. He also reports indirect holdings of 228 Common Shares through an ESPP trust and 73 Common Shares through an immediate family member, along with additional spouse-held shares from recent purchases.

At what prices did the TSM VP buy Taiwan-listed common shares (2330.TW)?

The VP reported purchases of 1,000 Common Shares at 74.13 per share directly, and spouse-held blocks of 1,000 shares each at 73.98, 74.44, and 74.75 per share on 2026-07-21, with prices translated from New Taiwan dollars according to noted exchange rates.

What did the TSM Form 4 disclose about American Depositary Shares (ADSs)?

The filing shows a purchase of 10 American Depositary Shares (TSM) on 2026-07-20 at a price of 405 per ADS, raising direct ADS holdings to 117 ADSs. A footnote explains each ADS represents five Common Shares of Taiwan Semiconductor.

Were Bor-Zen Tien’s reported TSM trades under a Rule 10b5-1 plan?

The Form 4’s Rule 10b5-1 checkbox is not marked as affirming a trading plan, and the footnotes do not state that the transactions were made under such a plan, indicating these purchases are not reported as 10b5-1 trades.

How much of TSM stock is held through employee and family-related structures?

The VP reports 228 Common Shares held indirectly via an Employee Stock Purchase Plan (ESPP) trust and 73 Common Shares held indirectly by an immediate family member, in addition to spouse-held purchases and his direct positions in common shares and ADSs.

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)
07/21/2026

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)	07/21/2026		P		1,000	A	$74.13(1)	13,051	D
American Depositary Shares (TSM)(2)	07/20/2026		P	V	10	A	$405	117	D
Common Shares (2330.TW)								228(3)	I	By ESPP Trust
Common Shares (2330.TW)	07/21/2026		P		1,000	A	$73.98(4)	2,000	I	By Spouse
Common Shares (2330.TW)	07/21/2026		P		1,000	A	$74.44(5)	3,000	I	By Spouse
Common Shares (2330.TW)	07/21/2026		P		1,000	A	$74.75(6)	4,000	I	By Spouse
Common Shares (2330.TW)								73	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$2,400, at the rate of NT$32.375 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$2,395, at the rate of NT$32.375 to US$1.

5. The price was translated from New Taiwan dollars, NT$2,410, at the rate of NT$32.375 to US$1.

6. The price was translated from New Taiwan dollars, NT$2,420, at the rate of NT$32.375 to US$1.

Remarks:

	/s/ Jen-Chau Huang, as attorney-in-fact	07/23/2026
	** 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)