-$12M
Net insider buying / selling at TSMC (TSM) over the last 2 years. Updated Aug 4, 2026
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Are TSMC Insiders Buying or Selling?
TSMC (TSM) has had 79 insider transactions in the past 90 days, including 77 buys and 2 sells. The most recent was Bor-Zen Tien, who bought 1,000 shares at $73.06 on August 3, 2026.
Insider trading patterns can signal confidence or concern from the people who know the company best. AltIndex tracks insider transactions as one of 25+ alternative data signals in the TSM AI Score. For government officials trading this stock, see TSM congressional trading.
Who’s Trading TSMC Stock?
| Insider | Activity | Trades | Last Trade |
|---|---|---|---|
| Tzu-Sou Chuang | Sold $14M | 5 | Jul 7, 2026 |
| Shyue-Shyh Lin | Bought $440,000 | 8 | Jul 21, 2026 |
| Bor-Zen Tien | Bought $380,000 | 20 | Aug 3, 2026 |
| URSULA BURNS | Bought $320,000 | 1 | Mar 31, 2026 |
| Lipen Yuan | Bought $170,000 | 6 | Jul 7, 2026 |
| Yeap Choh Fei | Bought $72,000 | 5 | Jul 7, 2026 |
Recent TSMC Insider Transactions
| Insider | Transaction Date | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Bor-Zen Tien | Aug 3, 2026 | Buy | 1,000 | $73.06 | $73,000 |
| Bor-Zen Tien | Jul 28, 2026 | Buy | 1,000 | $67.97 | $68,000 |
| Bor-Zen Tien | Jul 28, 2026 | Buy | 10 | $390 | $3,900 |
| Bor-Zen Tien | Jul 28, 2026 | Buy | 5 | $390 | $2,000 |
| Bor-Zen Tien | Jul 21, 2026 | Buy | 1,000 | $74.75 | $75,000 |
| Shyue-Shyh Lin | Jul 21, 2026 | Buy | 1,000 | $74.13 | $74,000 |
| Bor-Zen Tien | Jul 20, 2026 | Buy | 10 | $405 | $4,100 |
| Shyue-Shyh Lin | Jul 19, 2026 | Buy | 1,000 | $71.94 | $72,000 |
| Chih-Ho Chen | Jul 14, 2026 | Sell | 50 | $75.22 | $3,800 |
| Che-Chia Wei | Jul 7, 2026 | Buy | 146 | $76.62 | $11,000 |
| Ying-Lang Wang | Jul 7, 2026 | Buy | 53 | $76.62 | $4,100 |
| Syun-Ming Jang | Jul 7, 2026 | Buy | 47 | $76.62 | $3,600 |
| Shien-Yang Wu | Jul 7, 2026 | Buy | 54 | $76.62 | $4,100 |
| Yao-Ching Ku | Jul 7, 2026 | Buy | 46 | $76.62 | $3,500 |
| Juiping Chuang | Jul 7, 2026 | Buy | 47 | $76.62 | $3,600 |
| Lin Chris Horng-Dar | Jul 7, 2026 | Buy | 46 | $76.62 | $3,500 |
| Tzonz-Sheng Chang | Jul 7, 2026 | Buy | 52 | $76.62 | $4,000 |
| Chun-Hsien Lee | Jul 7, 2026 | Buy | 50 | $76.62 | $3,800 |
| Pei-Hung Chen | Jul 7, 2026 | Buy | 44 | $76.62 | $3,400 |
| Bor-Zen Tien | Jul 7, 2026 | Buy | 40 | $76.62 | $3,100 |
| Yi-Huang Wu | Jul 7, 2026 | Buy | 39 | $76.62 | $3,000 |
| Yung-Chin Hou | Jul 7, 2026 | Buy | 61 | $76.62 | $4,700 |
| Lipen Yuan | Jul 7, 2026 | Buy | 40 | $76.62 | $3,100 |
| Yung-Pei Chin | Jul 7, 2026 | Buy | 69 | $76.62 | $5,300 |
| Zhang Kevin Xiaoqiang | Jul 7, 2026 | Buy | 61 | $76.62 | $4,700 |
| Kuo-Chin Hsu | Jul 7, 2026 | Buy | 52 | $76.62 | $4,000 |
| Chih-Ho Chen | Jul 7, 2026 | Buy | 31 | $76.62 | $2,400 |
| Yung-Haw Liaw | Jul 7, 2026 | Buy | 48 | $76.62 | $3,700 |
| Shu-Hua Fang | Jul 7, 2026 | Buy | 54 | $76.62 | $4,100 |
| Yuh-Jier Mii | Jul 7, 2026 | Buy | 68 | $76.62 | $5,200 |
| Yeap Choh Fei | Jul 7, 2026 | Buy | 53 | $76.62 | $4,100 |
| Jun He | Jul 7, 2026 | Buy | 45 | $76.62 | $3,400 |
| Jen-Chau Huang | Jul 7, 2026 | Buy | 28 | $76.62 | $2,100 |
| Chin-Sheng Lu | Jul 7, 2026 | Buy | 37 | $76.62 | $2,800 |
| Tzu-Sou Chuang | Jul 7, 2026 | Buy | 45 | $76.62 | $3,400 |
| Min Cao | Jul 7, 2026 | Buy | 54 | $76.62 | $4,100 |
| Lee-Chung Lu | Jul 7, 2026 | Buy | 49 | $76.62 | $3,800 |
| Shyue-Shyh Lin | Jul 7, 2026 | Buy | 44 | $76.62 | $3,400 |
| Chue-San Yoo | Jul 7, 2026 | Buy | 51 | $76.62 | $3,900 |
| Yuan-Ko Hwang | Jul 7, 2026 | Buy | 40 | $76.62 | $3,100 |
| Bor-Zen Tien | Jul 7, 2026 | Buy | 6 | $76.62 | $460 |
| Lipen Yuan | Jun 22, 2026 | Buy | 1,000 | $79.19 | $79,000 |
| Lipen Yuan | Jun 15, 2026 | Buy | 1,000 | $75.26 | $75,000 |
| Che-Chia Wei | Jun 5, 2026 | Buy | 150 | $76.01 | $11,000 |
| Zhang Kevin Xiaoqiang | Jun 5, 2026 | Buy | 62 | $76.01 | $4,700 |
| Yi-Huang Wu | Jun 5, 2026 | Buy | 40 | $76.01 | $3,000 |
| Lipen Yuan | Jun 5, 2026 | Buy | 42 | $76.01 | $3,200 |
| Yeap Choh Fei | Jun 5, 2026 | Buy | 55 | $76.01 | $4,200 |
| Chue-San Yoo | Jun 5, 2026 | Buy | 53 | $76.01 | $4,000 |
| Ying-Lang Wang | Jun 5, 2026 | Buy | 56 | $76.01 | $4,300 |
| Yuh-Jier Mii | Jun 5, 2026 | Buy | 72 | $76.01 | $5,500 |
| Shien-Yang Wu | Jun 5, 2026 | Buy | 57 | $76.01 | $4,300 |
| Bor-Zen Tien | Jun 5, 2026 | Buy | 43 | $76.01 | $3,300 |
| Lin Chris Horng-Dar | Jun 5, 2026 | Buy | 48 | $76.01 | $3,600 |
| Lee-Chung Lu | Jun 5, 2026 | Buy | 52 | $76.01 | $4,000 |
| Chin-Sheng Lu | Jun 5, 2026 | Buy | 37 | $76.01 | $2,800 |
| Yung-Haw Liaw | Jun 5, 2026 | Buy | 48 | $76.01 | $3,600 |
| Chun-Hsien Lee | Jun 5, 2026 | Buy | 51 | $76.01 | $3,900 |
| Shyue-Shyh Lin | Jun 5, 2026 | Buy | 46 | $76.01 | $3,500 |
| Yuan-Ko Hwang | Jun 5, 2026 | Buy | 40 | $76.01 | $3,000 |
| Yao-Ching Ku | Jun 5, 2026 | Buy | 48 | $76.01 | $3,600 |
| Kuo-Chin Hsu | Jun 5, 2026 | Buy | 53 | $76.01 | $4,000 |
| Jen-Chau Huang | Jun 5, 2026 | Buy | 30 | $76.01 | $2,300 |
| Syun-Ming Jang | Jun 5, 2026 | Buy | 49 | $76.01 | $3,700 |
| Shu-Hua Fang | Jun 5, 2026 | Buy | 55 | $76.01 | $4,200 |
| Yung-Chin Hou | Jun 5, 2026 | Buy | 62 | $76.01 | $4,700 |
| Juiping Chuang | Jun 5, 2026 | Buy | 50 | $76.01 | $3,800 |
| Tzu-Sou Chuang | Jun 5, 2026 | Buy | 46 | $76.01 | $3,500 |
| Jun He | Jun 5, 2026 | Buy | 46 | $76.01 | $3,500 |
| Pei-Hung Chen | Jun 5, 2026 | Buy | 46 | $76.01 | $3,500 |
| Chih-Ho Chen | Jun 5, 2026 | Buy | 32 | $76.01 | $2,400 |
| Tzonz-Sheng Chang | Jun 5, 2026 | Buy | 53 | $76.01 | $4,000 |
| Min Cao | Jun 5, 2026 | Buy | 54 | $76.01 | $4,100 |
| Yung-Pei Chin | Jun 5, 2026 | Buy | 71 | $76.01 | $5,400 |
| Bor-Zen Tien | Jun 5, 2026 | Buy | 7 | $76.01 | $530 |
| Bor-Zen Tien | May 20, 2026 | Buy | 7 | $400 | $2,800 |
| Tzu-Sou Chuang | May 19, 2026 | Sell | 200,000 | $69.83 | $14M |
| Bor-Zen Tien | May 19, 2026 | Buy | 1,000 | $69.83 | $70,000 |
| Bor-Zen Tien | May 19, 2026 | Buy | 10 | $391.81 | $3,900 |
| Che-Chia Wei | May 8, 2026 | Buy | 160 | $71.82 | $11,000 |
| Zhang Kevin Xiaoqiang | May 8, 2026 | Buy | 66 | $71.82 | $4,700 |
| Lipen Yuan | May 8, 2026 | Buy | 44 | $71.82 | $3,200 |
| Chue-San Yoo | May 8, 2026 | Buy | 55 | $71.82 | $4,000 |
| Yeap Choh Fei | May 8, 2026 | Buy | 59 | $71.82 | $4,200 |
| Bor-Zen Tien | May 8, 2026 | Buy | 44 | $71.82 | $3,200 |
| Shien-Yang Wu | May 8, 2026 | Buy | 60 | $71.82 | $4,300 |
| Ying-Lang Wang | May 8, 2026 | Buy | 57 | $71.82 | $4,100 |
| Yung-Haw Liaw | May 8, 2026 | Buy | 53 | $71.82 | $3,800 |
| Lin Chris Horng-Dar | May 8, 2026 | Buy | 49 | $71.82 | $3,500 |
| Shyue-Shyh Lin | May 8, 2026 | Buy | 48 | $71.82 | $3,400 |
| Lee-Chung Lu | May 8, 2026 | Buy | 54 | $71.82 | $3,900 |
| Yuh-Jier Mii | May 8, 2026 | Buy | 75 | $71.82 | $5,400 |
| Jen-Chau Huang | May 8, 2026 | Buy | 30 | $71.82 | $2,200 |
| Kuo-Chin Hsu | May 8, 2026 | Buy | 56 | $71.82 | $4,000 |
| Chun-Hsien Lee | May 8, 2026 | Buy | 53 | $71.82 | $3,800 |
| Yuan-Ko Hwang | May 8, 2026 | Buy | 42 | $71.82 | $3,000 |
| Syun-Ming Jang | May 8, 2026 | Buy | 52 | $71.82 | $3,700 |
| Yung-Chin Hou | May 8, 2026 | Buy | 66 | $71.82 | $4,700 |
| Shu-Hua Fang | May 8, 2026 | Buy | 59 | $71.82 | $4,200 |
| Tzu-Sou Chuang | May 8, 2026 | Buy | 48 | $71.82 | $3,400 |
| Juiping Chuang | May 8, 2026 | Buy | 51 | $71.82 | $3,700 |
| Jun He | May 8, 2026 | Buy | 49 | $71.82 | $3,500 |
| Tzonz-Sheng Chang | May 8, 2026 | Buy | 56 | $71.82 | $4,000 |
| Min Cao | May 8, 2026 | Buy | 59 | $71.82 | $4,200 |
| Pei-Hung Chen | May 8, 2026 | Buy | 49 | $71.82 | $3,500 |
| Yung-Pei Chin | May 8, 2026 | Buy | 75 | $71.82 | $5,400 |
| Chih-Ho Chen | May 8, 2026 | Buy | 34 | $71.82 | $2,400 |
| Bor-Zen Tien | May 8, 2026 | Buy | 7 | $71.82 | $500 |
| Bor-Zen Tien | Apr 28, 2026 | Buy | 10 | $386 | $3,900 |
| Bor-Zen Tien | Apr 28, 2026 | Buy | 5 | $390 | $2,000 |
| Che-Chia Wei | Apr 9, 2026 | Buy | 186 | $57.87 | $11,000 |
| Chue-San Yoo | Apr 9, 2026 | Buy | 65 | $57.87 | $3,800 |
| Lipen Yuan | Apr 9, 2026 | Buy | 52 | $57.87 | $3,000 |
| Zhang Kevin Xiaoqiang | Apr 9, 2026 | Buy | 79 | $57.87 | $4,600 |
| Bor-Zen Tien | Apr 9, 2026 | Buy | 53 | $57.87 | $3,100 |
| Ying-Lang Wang | Apr 9, 2026 | Buy | 69 | $57.87 | $4,000 |
| Yeap Choh Fei | Apr 9, 2026 | Buy | 68 | $57.87 | $3,900 |
| Shien-Yang Wu | Apr 9, 2026 | Buy | 71 | $57.87 | $4,100 |
| Yung-Haw Liaw | Apr 9, 2026 | Buy | 61 | $57.87 | $3,500 |
| Lee-Chung Lu | Apr 9, 2026 | Buy | 65 | $57.87 | $3,800 |
| Yuh-Jier Mii | Apr 9, 2026 | Buy | 88 | $57.87 | $5,100 |
| Shyue-Shyh Lin | Apr 9, 2026 | Buy | 58 | $57.87 | $3,400 |
| Lin Chris Horng-Dar | Apr 9, 2026 | Buy | 60 | $57.87 | $3,500 |
| Kuo-Chin Hsu | Apr 9, 2026 | Buy | 66 | $57.87 | $3,800 |
| Jen-Chau Huang | Apr 9, 2026 | Buy | 37 | $57.87 | $2,100 |
| Yuan-Ko Hwang | Apr 9, 2026 | Buy | 51 | $57.87 | $3,000 |
| Chun-Hsien Lee | Apr 9, 2026 | Buy | 63 | $57.87 | $3,600 |
| Syun-Ming Jang | Apr 9, 2026 | Buy | 62 | $57.87 | $3,600 |
| Shu-Hua Fang | Apr 9, 2026 | Buy | 70 | $57.87 | $4,100 |
| Tzu-Sou Chuang | Apr 9, 2026 | Buy | 58 | $57.87 | $3,400 |
| Jun He | Apr 9, 2026 | Buy | 58 | $57.87 | $3,400 |
| Juiping Chuang | Apr 9, 2026 | Buy | 62 | $57.87 | $3,600 |
| Yung-Chin Hou | Apr 9, 2026 | Buy | 78 | $57.87 | $4,500 |
| Yung-Pei Chin | Apr 9, 2026 | Buy | 89 | $57.87 | $5,200 |
| Pei-Hung Chen | Apr 9, 2026 | Buy | 57 | $57.87 | $3,300 |
| Chih-Ho Chen | Apr 9, 2026 | Buy | 40 | $57.87 | $2,300 |
| Tzonz-Sheng Chang | Apr 9, 2026 | Buy | 67 | $57.87 | $3,900 |
| Min Cao | Apr 9, 2026 | Buy | 66 | $57.87 | $3,800 |
| Bor-Zen Tien | Apr 9, 2026 | Buy | 9 | $57.87 | $520 |
| URSULA BURNS | Mar 31, 2026 | Buy | 1,000 | $322.05 | $320,000 |
| Shyue-Shyh Lin | Mar 30, 2026 | Buy | 3,000 | $54.72 | $160,000 |
| Shyue-Shyh Lin | Mar 29, 2026 | Buy | 2,000 | $55.63 | $110,000 |
| Yeap Choh Fei | Mar 22, 2026 | Buy | 1,000 | $55.78 | $56,000 |
| Bor-Zen Tien | Mar 22, 2026 | Buy | 1,000 | $55.93 | $56,000 |
Frequently Asked Questions: TSMC Insider Trading
In the past 90 days, TSMC insiders have made 77 buys and 2 sells. The net buying may indicate insider confidence in the company’s outlook.
The most recent sale was by Chih-Ho Chen who sold 50 shares on July 14, 2026. View all transactions in the table on this page.
Insider buying is generally a stronger signal than insider selling, since insiders may sell for personal reasons (diversification, taxes) but typically buy only when they believe the stock is undervalued. AltIndex uses insider transaction patterns alongside 25+ other signals in the AI Score.
Lin Shyue-Shyh has bought the most TSM stock in the last 2 years, with a total value of $440,000.
Chuang Tzu-Sou has sold the most TSM stock in the last 2 years, with a total value of $14M.
The total value of insider transactions for TSMC in the last 2 years is negative, amounting to -$12M. This suggests that insiders have predominantly sold shares, which could reflect various personal or financial considerations rather than a straightforward outlook on the company's future performance.
The analytics provided are estimates and not a substitute for professional advice. All investments involve risks, including possible capital loss.
