TSMC VP Yoo Chue-San reports share holdings

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD VP Yoo Chue-San filed an initial Form 3 showing existing ownership of the company’s common shares.

Accepted by SEC EDGAR 03/18/2026 - 06:07 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD VP Yoo Chue-San filed an initial Form 3 showing existing ownership of the company’s common shares. The filing reports 1,797,614 common shares held directly.

In addition, indirect holdings include 6,366 shares through an Employee Stock Purchase Plan trust, 7,036 shares through a Long-Term Incentive plan trust, 219,924 shares held by a spouse, and 851,908 shares held via Yuding Investment Co., Ltd. The filing records ownership positions only and does not report any new buy or sell transactions.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider Yoo Chue-San

Role VP

Type	Security	Shares	Price	Value
Holding	Common Shares (2330.TW)	--	--	--
Holding	Common Shares (2330.TW)	--	--	--
Holding	Common Shares (2330.TW)	--	--	--
Holding	Common Shares (2330.TW)	--	--	--
Holding	Common Shares (2330.TW)	--	--	--

Holdings: Common Shares (2330.TW) — 1,797,614 shares (Direct); Common Shares (2330.TW) — 6,366 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 7,036 shares (Indirect, By LTI Trust); Common Shares (2330.TW) — 219,924 shares (Indirect, By Spouse); Common Shares (2330.TW) — 851,908 shares (Indirect, By Yuding Investment Co., Ltd.)

Footnotes (2)

1. F1. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
2. F2. Represents Common Shares purchased by a trust with cash received under the issuer's Long-Term Incentive ("LTI") Bonus Plan, over which the filer has obtained investment control.

FAQ

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

What does the TSM Form 3 for Yoo Chue-San disclose?

The Form 3 discloses VP Yoo Chue-San’s existing ownership in TSM common shares, including direct and indirect holdings through trusts, an employee stock purchase plan, a long-term incentive plan, a spouse, and Yuding Investment Co., Ltd., without reporting any new transactions.

How many TSM shares does Yoo Chue-San hold directly?

Yoo Chue-San is reported to hold 1,797,614 TSM common shares directly. This figure represents the direct ownership position as of the Form 3 date and serves as a baseline for tracking any future changes reported in subsequent insider filings.

What indirect TSM holdings are reported for Yoo Chue-San on Form 3?

Indirect holdings include 6,366 shares via an Employee Stock Purchase Plan trust, 7,036 shares via a Long-Term Incentive plan trust, 219,924 shares held by a spouse, and 851,908 shares held by Yuding Investment Co., Ltd., reflecting multiple channels of beneficial ownership.

Does the TSM Form 3 show any insider buying or selling activity?

The Form 3 does not show any insider buying or selling activity. It records existing direct and indirect ownership positions in TSM common shares, serving as an initial statement of beneficial ownership rather than a report of new market transactions.

What role do the ESPP and LTI plans play in Yoo Chue-San’s TSM holdings?

Some shares are held through an Employee Stock Purchase Plan and a Long-Term Incentive plan trust. These plans accumulate TSM common shares for employees and executives, and the filing attributes specific indirect ownership amounts to these plan-related trusts for Yoo Chue-San.

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

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Yoo Chue-San

(Last) (First) (Middle)

NO. 8, LI-HSIN ROAD 6

HSINCHU SCIENCE PARK

(Street)

HSINCHU TAIWAN 300096

(City) (State) (Zip)

TAIWAN, PROVINCE OF CHINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD [ TSM ]

3a. Foreign Trading Symbol
[2330.TW]

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Shares (2330.TW)	1,797,614	D
Common Shares (2330.TW)	6,366(1)	I	By ESPP Trust
Common Shares (2330.TW)	7,036(2)	I	By LTI Trust
Common Shares (2330.TW)	219,924	I	By Spouse
Common Shares (2330.TW)	851,908	I	By Yuding Investment Co., Ltd.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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

2. Represents Common Shares purchased by a trust with cash received under the issuer's Long-Term Incentive ("LTI") Bonus Plan, over which the filer has obtained investment control.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Jen-Chau Huang, as attorney-in-fact	03/18/2026
	** 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 5 (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 3: SEC 1473 (03-26)