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TSM (NYSE: TSM) VP Tzu-Sou Chuang sells 200,000 common shares in open market

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD vice president Tzu-Sou Chuang reported an open-market sale of 200,000 Common Shares (2330.TW) at $69.83 per share. After this direct sale, he holds 2,495,165 Common Shares directly, plus additional indirect holdings through an ESPP trust and an LTI bonus plan trust.

Positive

  • None.

Negative

  • None.
Insider Chuang Tzu-Sou
Role VP
Sold 200,000 shs ($13.97M)
Type Security Shares Price Value
Sale Common Shares (2330.TW) 200,000 $69.83 $13.97M
holding Common Shares (2330.TW) -- -- --
holding Common Shares (2330.TW) -- -- --
Holdings After Transaction: Common Shares (2330.TW) — 2,495,165 shares (Direct, null); Common Shares (2330.TW) — 5,668 shares (Indirect, By ESPP Trust)
Footnotes (1)
  1. The price was translated from New Taiwan dollars, NT$2,210, at the rate of NT$31.650 to US$1. Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP"). 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.
Shares sold 200,000 shares Open-market sale of Common Shares (2330.TW) on May 19, 2026
Sale price per share $69.83 per share Price for the 200,000-share sale
Direct holdings after sale 2,495,165 shares Common Shares held directly following the transaction
LTI trust indirect holdings 7,036 shares Common Shares held by LTI Bonus Plan trust
ESPP trust indirect holdings 5,668 shares Common Shares held by ESPP trust
Taiwan dollar price NT$2,210 Local currency price translated to US$69.83
FX rate used NT$31.650 = US$1 Exchange rate for translating NT$2,210 to U.S. dollars
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.
Long-Term Incentive Bonus Plan financial
"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."
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
indirect ownership financial
"direct_or_indirect": "I", "nature_of_ownership": "By LTI Trust""
Form 4 Insider Transactions: What Each Field Means →
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*
Chuang Tzu-Sou
(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)
05/19/2026		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)05/19/2026S200,000D$69.83(1)2,495,165D
Common Shares (2330.TW)5,668(2)IBy ESPP Trust
Common Shares (2330.TW)7,036(3)IBy LTI Trust
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. The price was translated from New Taiwan dollars, NT$2,210, at the rate of NT$31.650 to US$1.
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-fact05/19/2026
** 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

FAQ

What insider transaction did TSM VP Tzu-Sou Chuang report on this Form 4?

Tzu-Sou Chuang reported an open-market sale of 200,000 TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD Common Shares (2330.TW) at $69.83 per share. The transaction is coded “S,” indicating a sale in the open market or a private transaction on May 19, 2026.

How many TSM shares does Tzu-Sou Chuang hold after the reported sale?

Following the 200,000-share sale, Tzu-Sou Chuang holds 2,495,165 Common Shares directly. The Form 4 also shows 7,036 shares held indirectly through a Long-Term Incentive plan trust and 5,668 shares held indirectly through an Employee Stock Purchase Plan trust.

What price did TSM VP Tzu-Sou Chuang receive per share in the sale?

The reported sale price was $69.83 per Common Share. A footnote explains this reflects a translation from NT$2,210 using an exchange rate of NT$31.650 to US$1, providing U.S. dollar context for the Taiwan-listed share transaction.

How many TSM shares were involved in indirect holdings on this Form 4?

The filing lists 7,036 Common Shares held indirectly by a Long-Term Incentive (LTI) Bonus Plan trust and 5,668 Common Shares held indirectly by an Employee Stock Purchase Plan (ESPP) trust. These holdings are separate from Tzu-Sou Chuang’s 2,495,165 directly owned shares.

What do the ESPP and LTI trust holdings mean for TSM VP Tzu-Sou Chuang?

The ESPP trust holds Common Shares purchased under TSM’s Employee Stock Purchase Plan, while the LTI trust holds shares bought with cash from the Long-Term Incentive Bonus Plan. The filing notes Chuang has obtained investment control over shares in the LTI trust specifically.

Does the Form 4 show any derivative or option exercises by TSM VP Tzu-Sou Chuang?

No derivative or option exercises are listed in this Form 4. The derivative section is empty, and the transaction summary shows zero derivative exercises, indicating the reported activity relates only to Common Share holdings and one open-market sale transaction.