Transaction · 0001046179-26-000715

Wei Che-Chia

Wei Che-Chia, CHAIR, reported an open-market or private purchase at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD involving 144.000000 shares for an estimated $11432.16. Reported holdings after the transaction were 18280.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market buySEC transaction code PCHAIR
TSMTAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
Filing timeOct 08
Trade dateOct 07, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position traded0.79%Shares purchased ÷ (holdings after − shares purchased). Estimated position before: 18,136 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$472.20
Pre-filing
1mo ago -9.2%1w ago -3.4%1d ago +2.1%
Returns since
7d30d90d180d1y

TSM price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
TSM since 2026-10-08Filed today · pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Buy
Code P
Identifier
0001046179-26-000715
Common Shares (2330.TW)
Transaction date
Oct 07, 2026
Filed Oct 08, 2026, 10:32 AM · 1d delay
Shares
144 sh
$79.39 per share
Estimated value
$11.4k
Computed from shares × price
Holdings after
18.2k sh
Indirect · By ESPP Trust

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Buy Director Buy
+36score
Filing-only score

+36

Compact filing score computed from stored Form 4 facts. Version v1.

Strong filing signal

This filing has a high positive filing-only score. It may deserve closer research, but it is not an investment recommendation.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chairman and CEO

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  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$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 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.

Original filing · 0001046179-26-000715
Related transactions

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Same reporting owner
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