TSM (Taiwan Semiconductor Manufacturing Company Ltd.)
Insider Trading Activity
Every open-market purchase and sale reported by TSM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-04 | Shu-Hua Fang | SVP and GC | Buy | — | — |
| 2026-09-02 | Tzu-Sou Chuang | VP | A | — | — |
| 2026-09-02 | Kevin Xiaoqiang Zhang | SVP and Deputy Co-COO | A | — | — |
| 2026-09-02 | Syun-Ming Jang | VP | A | — | — |
| 2026-09-02 | Yung-Chin Hou | SVP and Deputy Co-COO | A | — | — |
| 2026-09-02 | Ying-Lang Wang | SVP | A | — | — |
| 2026-09-02 | Kuo-Chin Hsu | VP | A | — | — |
| 2026-09-02 | Chris Horng-Dar Lin | VP and CIO | A | — | — |
| 2026-09-02 | Tzonz-Sheng Chang | SVP | A | — | — |
| 2026-09-02 | Che-Chia Wei | Chairman and CEO | A | — | — |
| 2026-09-02 | Yung-Pei Chin | EVP and Co-COO | A | — | — |
| 2026-09-02 | Lee-Chung Lu | VP | A | — | — |
| 2026-09-02 | Choh Fei Yeap | SVP | A | — | — |
| 2026-09-02 | Shu-Hua Fang | SVP and GC | A | — | — |
| 2026-09-02 | Yuh-Jier Mii | EVP and Co-COO | A | — | — |
| 2026-09-02 | Min Cao | VP | A | — | — |
| 2026-09-02 | Jen-Chau Huang | SVP and CFO | A | — | — |
| 2026-09-02 | Juiping Chuang | VP | A | — | — |
| 2026-09-02 | Shien-Yang Wu | SVP | A | — | — |
| 2026-09-02 | Chue-San Yoo | VP | A | — | — |
| 2026-09-02 | Jun He | VP | A | — | — |
| 2026-09-02 | Chun-Hsien Lee | SVP | A | — | — |
| 2026-08-20 | Lipen Yuan | VP | Buy | — | — |
| 2026-08-10 | Chun-Hsien Lee | SVP | Buy | — | — |
| 2026-08-10 | Tzu-Sou Chuang | VP | Buy | — | — |
| 2026-08-10 | Chue-San Yoo | VP | Buy | — | — |
| 2026-08-10 | Yi-Huang Wu | VP | Buy | — | — |
| 2026-08-10 | Shyue-Shyh Lin | VP | Buy | — | — |
| 2026-08-10 | Yung-Chin Hou | SVP and Deputy Co-COO | Buy | — | — |
| 2026-08-10 | Choh Fei Yeap | SVP | Buy | — | — |
| 2026-08-10 | Yuh-Jier Mii | EVP and Co-COO | Buy | — | — |
| 2026-08-10 | Pei-Hung Chen | VP | Buy | — | — |
| 2026-08-10 | Syun-Ming Jang | VP | Buy | — | — |
| 2026-08-10 | Chih-Ho Chen | Controller | Buy | — | — |
| 2026-08-10 | Chris Horng-Dar Lin | VP and CIO | Buy | — | — |
| 2026-08-10 | Kuo-Chin Hsu | VP | Buy | — | — |
| 2026-08-10 | Ying-Lang Wang | SVP | Buy | — | — |
| 2026-08-10 | Yuan-Ko Hwang | VP | Buy | — | — |
| 2026-08-10 | Tzonz-Sheng Chang | SVP | Buy | — | — |
| 2026-08-10 | Chin-Sheng Lu | VP | Buy | — | — |
| 2026-08-10 | Kevin Xiaoqiang Zhang | SVP and Deputy Co-COO | Buy | — | — |
| 2026-08-10 | Shu-Hua Fang | SVP and GC | Buy | — | — |
| 2026-08-10 | Che-Chia Wei | Chairman and CEO | Buy | — | — |
| 2026-08-10 | Lee-Chung Lu | VP | Buy | — | — |
| 2026-08-10 | Yung-Pei Chin | EVP and Co-COO | Buy | — | — |
| 2026-08-10 | Min Cao | VP | Buy | — | — |
| 2026-08-10 | Yao-Ching Ku | VP | Buy | — | — |
| 2026-08-10 | Jen-Chau Huang | SVP and CFO | Buy | — | — |
| 2026-08-10 | Bor-Zen Tien | VP | Buy | — | — |
| 2026-08-10 | Juiping Chuang | VP | Buy | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 34,605,530 | — |
| — | EVP and Co-COO | 9,394,246 | — |
| — | Chairman and CEO | 8,356,985 | — |
| — | VP | 2,657,697 | — |
| — | SVP and CFO | 1,852,046 | — |
| — | VP | 1,510,376 | — |
| — | SVP and GC | 898,895 | — |
| — | SVP | 842,052 | — |
| — | SVP and Deputy Co-COO | 743,518 | — |
| — | VP | 531,341 | — |
| — | SVP | 524,902 | — |
| — | VP | 470,090 | — |
| — | VP | 459,090 | — |
| — | VP | 434,763 | — |
| — | SVP | 385,854 | — |
| — | VP | 353,913 | — |
| — | SVP | 330,519 | — |
| — | VP | 291,325 | — |
| — | SVP | 236,837 | — |
| — | VP | 206,677 | — |
| — | VP | 161,851 | — |
| — | VP and CIO | 139,919 | — |
| — | VP | 53,967 | — |
| — | VP | 44,479 | — |
| — | VP | 30,565 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the TSM quote page; the site-wide leaderboard is on the insider transactions hub.