TSM insider buying
24 cluster buysTAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
When two or more insiders at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD buy TSM in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in TSM plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Aug 7 – Nov 1, 2026Detected Nov 3, 2026Executive buyer30 insidersTotal bought$607.7KMarket capUnknown
- Jul 13 – Oct 7, 2026Detected Oct 8, 2026Executive buyer30 insidersTotal bought$1.4MMarket capUnknown
- Jul 13 – Oct 7, 2026Detected Oct 8, 2026Executive buyer30 insidersTotal bought$1.3MMarket capUnknown
21 more clusters in TSM
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All notable open-market buys in TSM
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Nov 1, 2026 | Yuan Lipencluster VP | 1,000 | $71.49 | $71.5K | SEC ↗ |
| Oct 7, 2026 | Wei Che-Chiacluster Director, Chairman and CEO | 144 | $79.39 | $11.4K | SEC ↗ |
| Oct 7, 2026 | Mii Yuh-Jiercluster EVP and Co-COO | 68 | $79.39 | $5.4K | SEC ↗ |
| Oct 7, 2026 | Chin Yung-Peicluster EVP and Co-COO | 67 | $79.39 | $5.3K | SEC ↗ |
| Oct 7, 2026 | Hou Yung-Chincluster SVP and Deputy Co-COO | 60 | $79.39 | $4.8K | SEC ↗ |
| Oct 7, 2026 | Zhang Kevin Xiaoqiangcluster SVP and Deputy Co-COO | 59 | $79.39 | $4.7K | SEC ↗ |
| Oct 7, 2026 | Wu Shien-Yangcluster SVP | 53 | $79.39 | $4.2K | SEC ↗ |
| Oct 7, 2026 | Fang Shu-Huacluster SVP and GC | 53 | $79.39 | $4.2K | SEC ↗ |
| Oct 7, 2026 | Hsu Kuo-Chincluster VP | 52 | $79.39 | $4.1K | SEC ↗ |
| Oct 7, 2026 | Wang Ying-Langcluster SVP | 52 | $79.39 | $4.1K | SEC ↗ |
| Oct 7, 2026 | Yeap Choh Feicluster SVP | 52 | $79.39 | $4.1K | SEC ↗ |
| Oct 7, 2026 | Cao Mincluster VP | 51 | $79.39 | $4.0K | SEC ↗ |
| Oct 7, 2026 | Lee Chun-Hsiencluster SVP | 51 | $79.39 | $4.0K | SEC ↗ |
| Oct 7, 2026 | Chang Tzonz-Shengcluster SVP | 51 | $79.39 | $4.0K | SEC ↗ |
| Oct 7, 2026 | Yoo Chue-Sancluster VP | 50 | $79.39 | $4.0K | SEC ↗ |
| Oct 7, 2026 | Lu Lee-Chungcluster VP | 49 | $79.39 | $3.9K | SEC ↗ |
| Oct 7, 2026 | Ku Yao-Chingcluster VP | 46 | $79.39 | $3.7K | SEC ↗ |
| Oct 7, 2026 | Jang Syun-Mingcluster VP | 46 | $79.39 | $3.7K | SEC ↗ |
| Oct 7, 2026 | Chuang Tzu-Soucluster VP | 46 | $79.39 | $3.7K | SEC ↗ |
| Oct 7, 2026 | Chuang Juipingcluster VP | 46 | $79.39 | $3.7K | SEC ↗ |
| Oct 7, 2026 | Lin Chris Horng-Darcluster VP and CIO | 44 | $79.39 | $3.5K | SEC ↗ |
| Oct 7, 2026 | Lin Shyue-Shyhcluster VP | 44 | $79.39 | $3.5K | SEC ↗ |
| Oct 7, 2026 | Chen Pei-Hungcluster VP | 43 | $79.39 | $3.4K | SEC ↗ |
| Oct 7, 2026 | He Juncluster VP | 43 | $79.39 | $3.4K | SEC ↗ |
| Oct 7, 2026 | Tien Bor-Zencluster VP | 40 | $79.39 | $3.2K | SEC ↗ |
TSM insider buying — FAQ
- Are insiders buying TSM stock?
- Yes — 34 distinct insiders have bought TSM (TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD) on the open market, including 24 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Nov 3, 2026.
- How much TSM stock have insiders bought?
- Insiders have bought a combined $2.4M of TSM across 151 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in TSM?
- A cluster buy is two or more distinct TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD insiders — officers, directors, or 10% owners — each buying TSM on the open market within a rolling window. TSM has 24 detected cluster buys to date.
- Where does this TSM insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in TSM
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy TSM within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding TSM.