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  4. [Form 3/A] TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD Amended Initial Statement of Beneficial Ownership

TSMC (NYSE: TSM) VP updates Form 3, corrects spouse share holdings

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3/A

Rhea-AI Filing Summary

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD vice president Ku Yao-Ching filed an amended Form 3 to correct previously reported indirect holdings. The amendment adjusts the number of Common Shares (2330.TW) owned by the reporting person’s spouse from 73,396 to 72,946 as of June 1, 2026.

Following this correction, reported holdings include 131,000 Common Shares held indirectly through Wei Liang Asset Management Co. Ltd., 72,946 Common Shares held by the spouse, and 30,851 Common Shares held directly. The filing updates earlier ownership information and does not report any new purchase or sale transactions.

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Insider Ku Yao-Ching
Role VP
Type Security Shares Price Value
holding Common Shares (2330.TW) -- -- --
holding Common Shares (2330.TW) -- -- --
holding Common Shares (2330.TW) -- -- --
Holdings After Transaction: Common Shares (2330.TW) — 30,851 shares (Direct, null); Common Shares (2330.TW) — 72,946 shares (Indirect, By Spouse)
Footnotes (1)
  1. [object Object]
Indirect holdings via Wei Liang 131,000 Common Shares (2330.TW) Indirect ownership reported as of June 1, 2026
Spouse indirect holdings corrected 72,946 Common Shares (2330.TW) Adjusted from 73,396 in amended Form 3
Direct holdings 30,851 Common Shares (2330.TW) Direct ownership reported as of June 1, 2026
Original spouse figure 73,396 Common Shares (2330.TW) Previously reported before correction
Spouse holdings overstatement 450 Common Shares (2330.TW) Shares inadvertently included and removed in amendment
Holding entries 3 entries All classified as holdings with unknown transaction codes
amended Form 3 regulatory
"This amended Form 3 is being filed to correct the number of Common Shares"
Common Shares (2330.TW) financial
"correct the number of Common Shares (2330.TW) reported as owned"
indirect ownership financial
"nature_of_ownership: By Wei Liang Asset Management Co. Ltd. and By Spouse"
Form 4 regulatory
"deemed to update such information reported in the Form 4 filed on June 9, 2026"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
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SEC Form 3
FORM 3UNITED 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*
Ku Yao-Ching
(Last)(First)(Middle)
NO. 8, LI-HSIN ROAD 6
HSINCHU SCIENCE PARK
(Street)
HSINCHUTAIWAN300096
(City)(State)(Zip)
TAIWAN
(Country)		2. Date of Event Requiring Statement (Month/Day/Year)
06/01/2026		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)
06/01/2026
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
VP
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)30,851D
Common Shares (2330.TW)72,946(1)IBy Spouse
Common Shares (2330.TW)131,000IBy Wei Liang Asset Management 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 ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. This amended Form 3 is being filed to correct the number of Common Shares (2330.TW) reported as owned by the reporting person's spouse in Table I of the original Form 3 filed on June 1, 2026, which inadvertently included 450 Common Shares (2330.TW) not owned by the reporting person's spouse. This amended Form 3 corrects the number of Common Shares (2330.TW) owned by the reporting person's spouse from 73,396 to 72,946, and is deemed to update such information reported in the Form 4 filed on June 9, 2026.
Remarks:
/s/ Jen-Chau Huang, as attorney-in-fact06/23/2026
** 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 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)

Source: View Original Filing on SEC EDGAR

FAQ

What does the TSM Form 3/A amendment for Ku Yao-Ching change?

The amendment corrects previously reported indirect holdings. It revises the spouse’s Common Shares (2330.TW) from 73,396 to 72,946 and updates the ownership details that were also reflected in a related Form 4 filed on June 9, 2026.

Did the TSM Form 3/A show Ku Yao-Ching buying or selling shares?

The Form 3/A does not show new purchases or sales. It updates reported ownership, classifying entries as holdings with unknown transaction codes and neutral net buy/sell direction, focusing solely on correcting previously disclosed share counts.

How many TSM shares does Ku Yao-Ching now report as indirectly owned?

The filing reports 131,000 Common Shares (2330.TW) held indirectly through Wei Liang Asset Management Co. Ltd. and 72,946 Common Shares held indirectly by the spouse, clarifying indirect ownership structures associated with the reporting person as of June 1, 2026.

How many TSM shares does Ku Yao-Ching hold directly after the amendment?

The amended Form 3 lists 30,851 Common Shares (2330.TW) as directly owned. This figure, together with indirect holdings through Wei Liang Asset Management and the spouse, reflects the updated overall position disclosed for the reporting person.

Why did TSM’s Ku Yao-Ching need to amend the original Form 3 filing?

The original Form 3 inadvertently included 450 Common Shares (2330.TW) that were not owned by the reporting person’s spouse. The amendment removes these shares, lowering the spouse’s reported holdings from 73,396 to 72,946 and updating related information in a prior Form 4.