Company · Ownership research

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD TSM

CIK 0001046179

Form 4 transactions dated Sep 1, 2023 to Sep 27, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 119 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-09.

Insider purchases & sales

Purchased: $2.68M
Sold: $13.97M

Sep 1, 2023 – Sep 9, 2026
Available records · partial months are marked ·

Insiders in this window

202610 of 30 preview events · 119 available in 2026

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-07	Wu Yi-Huang VP	Purchase	$3.05K 40 shares bought	33.33% added Trust holding	▾
2026-09-07	Yoo Chue-San VP	Purchase	$4.04K 53 shares bought	0.80% added Trust holding	▾
2026-09-07	Yeap Choh Fei SVP	Purchase	$4.11K 54 shares bought	0.83% added Trust holding	▾
2026-09-07	Zhang Kevin Xiaoqiang SVP and Deputy Co-COO	Purchase	$4.65K 61 shares bought	0.84% added Trust holding	▾
2026-09-07	Yuan Lipen VP	Purchase	$3.12K 41 shares bought	3.25% added Trust holding	▾
2026-09-07	Mii Yuh-Jier EVP and Co-COO	Purchase	$5.41K 71 shares bought	0.88% added Trust holding	▾
2026-09-07	Wu Shien-Yang SVP	Purchase	$4.34K 57 shares bought	0.84% added Trust holding	▾
2026-09-07	Wei Che-Chia Chairman and CEO · Director	Purchase	$11.35K 149 shares bought	0.83% added Trust holding	▾
2026-09-07	Tien Bor-Zen VP	Purchase	$3.28K 43 shares bought	15.93% added Trust holding	▾
2026-09-07	Wang Ying-Lang SVP	Purchase	$4.11K 54 shares bought	0.84% added Trust holding	▾

Showing 30 / 119 record groups in 2026. The complete set is available through the API.

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD · TSM

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 119 purchase / sale groups and 29 of 29 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"TSM","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.