TSMC (TSM) insider trading
37 directors and officers declare holding shares of TSMC (TSM), each in their own filing with the SEC. The largest is Fang Churng Tseng (Director) with 6.9M shares, 0.13% of the company, worth $3.1B at the last close. The most recent move on file: Yung-Pei Chin bought 67 shares at $79.39 on Oct 7, 2026. Of the 32 with a trade on file, 31 last bought and 1 last sold. Purchases and sales are as reported on Forms 3, 4 and 5 — the SEC counts private transactions too, and many large sales follow a plan arranged in advance. Holdings are never added up: two spouses often report the same shares, and a joint filing carries a fund's.
| Insider | Role | Shares | % of company | Value | Last trade on file | Filed |
|---|---|---|---|---|---|---|
| Fang Churng Tseng | Director | 6.9M | 0.13% | $3.1B | sold 10.0M shares on Jul 31, 2026 | Jul 31, 2026 |
| Yung-Pei Chin | EVP and Co-COO | 1.9M | 0.04% | $858.2M | bought 67 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| C. C. Wei | Chairman and CEO · Director | 1.7M | 0.03% | $785.2M | bought 144 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Li-Mei Ho | SVP | 1.3M | 0.03% | $608.6M | — | Mar 18, 2026 |
| Chue-San Yoo | VP | 578,280 | 0.01% | $262.1M | bought 50 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Jen-Chau Huang | SVP and CFO | 371,131 | <0.01% | $168.2M | bought 28 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Ying-Lang Wang | SVP | 305,587 | <0.01% | $138.5M | bought 52 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Tzu-Sou Chuang | VP | 303,255 | <0.01% | $137.5M | bought 46 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Shu-Hua Fang | SVP and GC | 273,154 | <0.01% | $123.8M | bought 53 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Yuh-Jier Mii | EVP and Co-COO | 271,594 | <0.01% | $123.1M | bought 68 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Yung-Haw Liaw | VP | 181,266 | <0.01% | $82.2M | — | Jul 7, 2026 |
| Shien-Yang Wu | SVP | 172,000 | <0.01% | $78.0M | bought 53 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Yung-Chin Hou | SVP and Deputy Co-COO | 154,258 | <0.01% | $69.9M | bought 60 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Min Cao | VP | 114,527 | <0.01% | $51.9M | bought 51 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Chun-Hsien Lee | SVP | 108,317 | <0.01% | $49.1M | bought 51 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Pei-Hung Chen | VP | 105,006 | <0.01% | $47.6M | bought 43 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Syun-Ming Jang | VP | 93,416 | <0.01% | $42.3M | bought 46 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Kevin Xiaoqiang Zhang | SVP and Deputy Co-COO | 78,014 | <0.01% | $35.4M | bought 59 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Juiping Chuang | VP | 73,107 | <0.01% | $33.1M | bought 46 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Tzonz-Sheng Chang | SVP | 69,326 | <0.01% | $31.4M | bought 51 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Lee-Chung Lu | VP | 62,692 | <0.01% | $28.4M | bought 49 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Kuo-Chin Hsu | VP | 50,621 | <0.01% | $22.9M | bought 52 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Choh Fei Yeap | SVP | 48,687 | <0.01% | $22.1M | bought 52 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Chris Horng-Dar Lin | VP and CIO | 47,703 | <0.01% | $21.6M | bought 44 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
| Yao-Ching Ku | VP | 47,006 | <0.01% | $21.3M | bought 46 shares at $79.39 on Oct 7, 2026 | Oct 7, 2026 |
Each insider at TSMC
- Fang Churng Tseng — Director
- Yung-Pei Chin — EVP and Co-COO
- C. C. Wei — Chairman and CEO · Director
- Li-Mei Ho — SVP
- Chue-San Yoo — VP
- Jen-Chau Huang — SVP and CFO
- Ying-Lang Wang — SVP
- Tzu-Sou Chuang — VP
- Shu-Hua Fang — SVP and GC
- Yuh-Jier Mii — EVP and Co-COO
- Yung-Haw Liaw — VP
- Shien-Yang Wu — SVP
What insiders bought and sold across AI stocks · All filings on sec.gov