STOCK TITAN
  1. Home
  2. Sec-filings
  3. TSMWF
  4. [Form 4] TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD Insider Trading Activity

TSMC VP Yoo granted 8,175 shares in stock vest

After the Sept. 1 vesting, Vice President Yoo Chue-San’s direct holdings rose to 1,805,789 common shares.

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) reported that Vice President Yoo Chue-San acquired 8,175 Common Shares on September 1, 2026 as a grant that vested under the company’s Employee Restricted Stock Awards Rules, at a reported price of $0.00 per share.

After this vesting, Yoo directly holds 1,805,789 Common Shares. In addition, indirect holdings include 6,641 shares by an ESPP trust, 7,036 shares by an LTI trust over which Yoo has investment control, 219,924 shares held by a spouse, and 851,908 shares held by Yuding Investment Co., Ltd.

Positive

  • None.

Negative

  • None.
Insider Yoo Chue-San
Role VP
Type Security Shares Price Value
Grant/Award Common Shares (2330.TW) F1 8,175 $0.00 $0.00
holding Common Shares (2330.TW) F2 -- -- --
holding Common Shares (2330.TW) F3 -- -- --
holding Common Shares (2330.TW) -- -- --
holding Common Shares (2330.TW) -- -- --
Holdings After Transaction: Common Shares (2330.TW) — 1,805,789 shares (Direct); Common Shares (2330.TW) — 6,641 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 (3)
  1. F1. Represents Common Shares vested on September 1, 2026 in accordance with the issuer's Employee Restricted Stock Awards Rules.
  2. F2. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
  3. F3. 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.
Vested grant 8,175 shares Common Shares vested on September 1, 2026 under Employee Restricted Stock Awards Rules
Direct holdings after transaction 1,805,789 shares Direct Common Share ownership by Yoo Chue-San after September 1, 2026 vesting
ESPP trust holdings 6,641 shares Common Shares held indirectly by ESPP Trust
LTI trust holdings 7,036 shares Common Shares held indirectly by LTI trust with Yoo’s investment control
Spouse holdings 219,924 shares Common Shares held indirectly by spouse of reporting person
Yuding Investment Co., Ltd. holdings 851,908 shares Common Shares held indirectly through Yuding Investment Co., Ltd.
Grant price per share $0.00 per share Reported price for 8,175 vested Common Shares on September 1, 2026
Employee Restricted Stock Awards Rules financial
"Common Shares vested on September 1, 2026 in accordance with the issuer's Employee Restricted Stock Awards Rules"
Employee Stock Purchase Plan ("ESPP") financial
"Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP")."
Long-Term Incentive ("LTI") Bonus Plan financial
"purchased by a trust with cash received under the issuer's Long-Term Incentive ("LTI") Bonus Plan"

FAQ

What transaction did TSM VP Yoo Chue-San report on this Form 4?
Yoo Chue-San reported the acquisition of 8,175 TSM Common Shares on September 1, 2026. These shares vested as part of the company’s Employee Restricted Stock Awards Rules and were recorded at a price of $0.00 per share as a grant or award.

How many TSM shares does Yoo Chue-San hold directly after this transaction?
Following the September 1, 2026 vesting, Yoo Chue-San directly holds 1,805,789 TSM Common Shares. This figure reflects holdings after the reported grant of 8,175 vested shares under the Employee Restricted Stock Awards Rules.

What indirect TSM share holdings are associated with Yoo Chue-San?
Indirect holdings include 6,641 shares held by an ESPP trust, 7,036 shares held by an LTI trust over which Yoo has investment control, 219,924 shares held by a spouse, and 851,908 shares held by Yuding Investment Co., Ltd.

Was the TSM share acquisition by Yoo Chue-San a market purchase?
No. The Form 4 describes the 8,175 TSM shares as vested Common Shares under the Employee Restricted Stock Awards Rules, recorded at $0.00 per share, indicating a grant or award rather than an open-market purchase.

Are the reported TSM transactions under a Rule 10b5-1 trading plan?
No. The filing’s Rule 10b5-1 checkbox is marked false, and the footnotes do not state that the reported acquisition or holdings occurred under a Rule 10b5-1 or similar pre-arranged trading plan.

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

Form 4 Insider Transactions: What Each Field Means →
See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
SEC Form 4
FORM 4UNITED 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*
Yoo Chue-San
(Last)(First)(Middle)
NO. 8, LI-HSIN ROAD 6
HSINCHU SCIENCE PARK
(Street)
HSINCHUTAIWAN300096
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
VP
2a. Foreign Trading Symbol
[2330.TW]
3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Shares (2330.TW)09/01/2026A8,175(1)A$01,805,789D
Common Shares (2330.TW)6,641(2)IBy ESPP Trust
Common Shares (2330.TW)7,036(3)IBy LTI Trust
Common Shares (2330.TW)219,924IBy Spouse
Common Shares (2330.TW)851,908IBy Yuding Investment Co., Ltd.
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Represents Common Shares vested on September 1, 2026 in accordance with the issuer's Employee Restricted Stock Awards Rules.
2. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
3. 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:
/s/ Jen-Chau Huang, as attorney-in-fact09/02/2026
** Signature of Reporting PersonDate
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