TSM insider trades & Congress trades
Taiwan Semiconductor Manufacturing Co Ltd: public insider filings and Congress disclosures, in one place.
Bourse has recorded 31 open-market insider transactions in Taiwan Semiconductor Manufacturing Co Ltd (TSM) (31 purchases with code P and 0 sales with code S), the most recent on October 7, 2026.
In the last 90 days: 31 purchases by 30 insiders ($121K) and 0 sales by 0 ($0).
The most recent insider buying cluster (three or more different insiders buying within 14 days) ran from October 7, 2026 to October 7, 2026, with 30 insiders.
Members of Congress have disclosed 3 trades in TSM (3 purchases, 0 sales), the latest transaction dated September 22, 2026. Congress filings can arrive up to 45 days after the trade.
Insider transactions
SEC Form 4, open-market purchases (P) and sales (S) only. Awards, option exercises and tax withholding are excluded. “After” shows the stock’s return over the month following the trade, where available.
| Date | Insider | Role | Type | Shares | Price | Value | After 1M |
|---|---|---|---|---|---|---|---|
| Oct 7, 2026 | Chang Tzonz-Sheng | SVP | Buy | 51 | $79.39 | $4K | – |
| Oct 7, 2026 | Fang Shu-Hua | SVP and GC | Buy | 53 | $79.39 | $4K | – |
| Oct 7, 2026 | Chuang Juiping | VP | Buy | 46 | $79.39 | $4K | – |
| Oct 7, 2026 | Chen Pei-Hung | VP | Buy | 43 | $79.39 | $3K | – |
| Oct 7, 2026 | Chen Chih-Ho | Controller | Buy | 31 | $79.39 | $2K | – |
| Oct 7, 2026 | Chuang Tzu-Sou | VP | Buy | 46 | $79.39 | $4K | – |
| Oct 7, 2026 | Cao Min | VP | Buy | 51 | $79.39 | $4K | – |
| Oct 7, 2026 | Chin Yung-Pei | EVP and Co-COO | Buy | 67 | $79.39 | $5K | – |
| Oct 7, 2026 | Hou Yung-Chin | SVP and Deputy Co-COO | Buy | 60 | $79.39 | $5K | – |
| Oct 7, 2026 | Hsu Kuo-Chin | VP | Buy | 52 | $79.39 | $4K | – |
| Oct 7, 2026 | He Jun | VP | Buy | 43 | $79.39 | $3K | – |
| Oct 7, 2026 | Huang Jen-Chau | SVP and CFO | Buy | 28 | $79.39 | $2K | – |
| Oct 7, 2026 | Jang Syun-Ming | VP | Buy | 46 | $79.39 | $4K | – |
| Oct 7, 2026 | Hwang Yuan-Ko | VP | Buy | 39 | $79.39 | $3K | – |
| Oct 7, 2026 | Lin Chris Horng-Dar | VP and CIO | Buy | 44 | $79.39 | $3K | – |
| Oct 7, 2026 | Lee Chun-Hsien | SVP | Buy | 51 | $79.39 | $4K | – |
| Oct 7, 2026 | Ku Yao-Ching | VP | Buy | 46 | $79.39 | $4K | – |
| Oct 7, 2026 | Lu Chin-Sheng | VP | Buy | 36 | $79.39 | $3K | – |
| Oct 7, 2026 | Lu Lee-Chung | VP | Buy | 49 | $79.39 | $4K | – |
| Oct 7, 2026 | Lin Shyue-Shyh | VP | Buy | 44 | $79.39 | $3K | – |
| Oct 7, 2026 | Wang Ying-Lang | SVP | Buy | 52 | $79.39 | $4K | – |
| Oct 7, 2026 | Mii Yuh-Jier | EVP and Co-COO | Buy | 68 | $79.39 | $5K | – |
| Oct 7, 2026 | Tien Bor-Zen | VP | Buy | 40 | $79.39 | $3K | – |
| Oct 7, 2026 | Tien Bor-Zen | VP | Buy | 7 | $79.39 | $556 | – |
| Oct 7, 2026 | Wu Shien-Yang | SVP | Buy | 53 | $79.39 | $4K | – |
| Oct 7, 2026 | Wei Che-Chia | Chairman and CEO | Buy | 144 | $79.39 | $11K | – |
| Oct 7, 2026 | Wu Yi-Huang | VP | Buy | 39 | $79.39 | $3K | – |
| Oct 7, 2026 | Yoo Chue-San | VP | Buy | 50 | $79.39 | $4K | – |
| Oct 7, 2026 | Yuan Lipen | VP | Buy | 40 | $79.39 | $3K | – |
| Oct 7, 2026 | Yeap Choh Fei | SVP | Buy | 52 | $79.39 | $4K | – |
Showing the 30 most recent of 31 transactions.
Congress trades
Disclosures under the STOCK Act. Amounts are reported as ranges; some trades are made by a spouse or dependent child.
| Traded | Member | Party | Type | Amount | Disclosed | Filing |
|---|---|---|---|---|---|---|
| Sep 22, 2026 | Gilbert Cisneros | house | Buy | $1,001 - $15,000 | Oct 12, 2026 | Source |
| Aug 12, 2026 | Richard W. Allen | house | Buy | $1,001 - $15,000 | Sep 22, 2026 | Source |
| Jul 10, 2026 | Cleo Fields | house | Buy | $1,001 - $15,000 | Jul 30, 2026 | Source |
Data as of October 22, 2026. Public filings only. A purchase or sale by a politician or an insider does not by itself imply any wrongdoing.
New to these filings? Read how to read a Form 4, how Congress trades are disclosed and what insider cluster buying means. Sources and limits are on the Methodology page.
See these filings as they land
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