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  4. [Form 4] TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD Insider Trading Activity

TSMC VP adds 51 shares via ESPP purchase

Taiwan Semiconductor Manufacturing Co. vice president Yoo Chue-San reported a small share purchase through the company’s employee plan.

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

Rhea-AI Filing Summary

Taiwan Semiconductor Manufacturing Co. vice president Yoo Chue-San reported a small share purchase through the company’s employee plan. An administrator for the Employee Stock Purchase Plan bought 51 common shares in the open market at $76.62 per share on his behalf, held indirectly via an ESPP trust.

Following this transaction, the ESPP trust position stands at 6,590 common shares. The filing also lists substantial additional indirect holdings through Yuding Investment Co., a spouse account, and an LTI trust, plus a large block of directly held common shares.

Positive

  • None.

Negative

  • None.
Insider Yoo Chue-San
Role VP
Bought 51 shs ($4K)
Type Security Shares Price Value
Purchase Common Shares (2330.TW) 51 $76.62 $4K
holding Common Shares (2330.TW) -- -- --
holding Common Shares (2330.TW) -- -- --
holding Common Shares (2330.TW) -- -- --
holding Common Shares (2330.TW) -- -- --
Holdings After Transaction: Common Shares (2330.TW) — 6,590 shares (Indirect, By ESPP Trust); Common Shares (2330.TW) — 1,797,614 shares (Direct); 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 (4)
  1. F1. Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer pursuant to terms predetermined by the issuer.
  2. F2. The price was translated from the average purchase price of NT$2,462.6361 in New Taiwan dollars, at the rate of NT$32.143 to US$1.
  3. F3. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
  4. F4. 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.
ESPP purchase size 51 shares Common shares bought via ESPP on July 7, 2026
Purchase price $76.62/share Average price for the 51 ESPP shares
ESPP trust holdings 6,590 shares Total common shares held by ESPP trust after transaction
Yuding Investment holdings 851,908 shares Indirect common shares held via Yuding Investment Co., Ltd.
Spouse holdings 219,924 shares Indirect common shares held by spouse
LTI trust holdings 7,036 shares Indirect common shares held by LTI trust
Direct holdings 1,797,614 shares Common shares held directly by the filer after reported entries
Employee Stock Purchase Plan ("ESPP") financial
"Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer"
Long-Term Incentive ("LTI") Bonus Plan financial
"Represents Common Shares purchased by a trust with cash received under the issuer's Long-Term Incentive ("LTI") Bonus Plan"
indirect ownership financial
"nature_of_ownership: By Yuding Investment Co., Ltd. / By Spouse / By LTI Trust / By ESPP Trust"

FAQ

What insider transaction did TSM (Taiwan Semiconductor) disclose for Yoo Chue-San?
TSM disclosed that VP Yoo Chue-San acquired 51 common shares through its Employee Stock Purchase Plan. The ESPP administrator bought the shares in the open market and holds them in a trust for him under predetermined plan terms.

At what price were the 51 Taiwan Semiconductor (TSM) shares purchased?
The 51 Taiwan Semiconductor common shares were purchased at $76.62 per share. The price reflects the average purchase price translated from NT$2,462.6361 using an exchange rate of NT$32.143 to US$1, as described in the filing footnotes.

How many TSM shares does Yoo Chue-San now hold via the ESPP trust?
After the reported ESPP transaction, the ESPP trust holds 6,590 Taiwan Semiconductor common shares for Yoo Chue-San. This reflects the prior ESPP trust balance plus the newly acquired 51 shares purchased under the company’s Employee Stock Purchase Plan.

What other indirect TSM holdings are reported for Yoo Chue-San?
The filing shows additional indirect holdings for Yoo Chue-San through Yuding Investment Co., his spouse, and an LTI trust. These positions collectively represent significant ownership in Taiwan Semiconductor common shares beyond the ESPP trust holdings reported in this Form 4.

Is the TSM share purchase by Yoo Chue-San a discretionary trade or plan-based?
The 51-share purchase is plan-based under TSM’s Employee Stock Purchase Plan. Footnotes explain the ESPP administrator bought the common shares on predetermined terms, indicating a scheduled, programmatic acquisition rather than a discretionary market trade by the executive.

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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)
07/07/2026		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)1,797,614D
Common Shares (2330.TW)07/07/2026(1)P51A$76.62(2)6,590(3)IBy ESPP Trust
Common Shares (2330.TW)7,036(4)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. Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer pursuant to terms predetermined by the issuer.
2. The price was translated from the average purchase price of NT$2,462.6361 in New Taiwan dollars, at the rate of NT$32.143 to US$1.
3. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
4. 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-fact07/09/2026
** 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