TSM Taiwan Semiconductor Manufacturing Company Limited
$433.24
Taiwan Semiconductor Manufacturing Company Limited (TSM) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
Insider signal
Bullish
Insiders bought more than they sold over this window — uncommon at any size.
Cluster activity
30 buyers in the last 30 days
31 buyers in the last 90 days
1 seller in the last 90 days
Insiders buying
31
118 transactions
Insiders selling
1
1 transaction
Purchases
$1.8M
24,246 shares
Sales
$3.8K
50 shares
Net activity
$1.8M
purchases less sales
How much of that selling was preplanned? 0% planned / 100% discretionary
10b5-1 plan sales
$0
0 transactions · 0 shares
Discretionary sales
$3.8K
1 transaction · 50 shares
Largest single sale: $3.8K.
Where they traded
Buy
Sell
Dot area is proportional to transaction value.
Last open-market purchase: September 7, 2026 , by Cao Min .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Wei Che-Chia | Chairman and CEO | Buy | 149 | $76.20 | $11.4K | 18,136 | |
| Mii Yuh-Jier | EVP and Co-COO | Buy | 71 | $76.20 | $5.4K | 8,170 | |
| Chin Yung-Pei | EVP and Co-COO | Buy | 71 | $76.20 | $5.4K | 8,506 | |
| Zhang Kevin Xiaoqiang | SVP and Deputy Co-COO | Buy | 61 | $76.20 | $4.6K | 7,347 | |
| Hou Yung-Chin | SVP and Deputy Co-COO | Buy | 61 | $76.20 | $4.6K | 7,521 | |
| Wu Shien-Yang | SVP | Buy | 57 | $76.20 | $4.3K | 6,862 | |
| Cao Min | VP | Buy | 56 | $76.20 | $4.3K | 6,773 | |
| Fang Shu-Hua | SVP and GC | Buy | 56 | $76.20 | $4.3K | 6,708 | |
| Hsu Kuo-Chin | VP | Buy | 55 | $76.20 | $4.2K | 6,729 | |
| Wang Ying-Lang | SVP | Buy | 54 | $76.20 | $4.1K | 6,499 | |
| Yeap Choh Fei | SVP | Buy | 54 | $76.20 | $4.1K | 6,547 | |
| Chang Tzonz-Sheng | SVP | Buy | 53 | $76.20 | $4.0K | 5,481 | |
| Yoo Chue-San | VP | Buy | 53 | $76.20 | $4.0K | 6,694 | |
| Lee Chun-Hsien | SVP | Buy | 52 | $76.20 | $4.0K | 6,041 | |
| Lu Lee-Chung | VP | Buy | 51 | $76.20 | $3.9K | 6,485 | |
| Chuang Juiping | VP | Buy | 50 | $76.20 | $3.8K | 4,292 | |
| Jang Syun-Ming | VP | Buy | 49 | $76.20 | $3.7K | 5,942 | |
| Tien Bor-Zen 2 fills | VP | Buy | 48 | $76.20 | $3.7K | 313 | |
| Lin Chris Horng-Dar | VP and CIO | Buy | 47 | $76.20 | $3.6K | 5,978 | |
| Chuang Tzu-Sou | VP | Buy | 47 | $76.20 | $3.6K | 5,853 | |
| Ku Yao-Ching | VP | Buy | 47 | $76.20 | $3.6K | 188 | |
| Chen Pei-Hung | VP | Buy | 46 | $76.20 | $3.5K | 1,395 | |
| He Jun | VP | Buy | 46 | $76.20 | $3.5K | 5,407 | |
| Lin Shyue-Shyh | VP | Buy | 44 | $76.20 | $3.4K | 340 | |
| Yuan Lipen | VP | Buy | 41 | $76.20 | $3.1K | 1,301 | |
| Hwang Yuan-Ko | VP | Buy | 40 | $76.20 | $3.0K | 299 | |
| Wu Yi-Huang | VP | Buy | 40 | $76.20 | $3.0K | 160 | |
| Lu Chin-Sheng | VP | Buy | 38 | $76.20 | $2.9K | 151 | |
| Chen Chih-Ho | Controller | Buy | 32 | $76.20 | $2.4K | 202 | |
| Huang Jen-Chau | SVP and CFO | Buy | 30 | $76.20 | $2.3K | 3,583 | |
| Yuan Lipen | VP | Buy | 1,000 | $73.77 | $73.8K | 7,000 | |
| Yuan Lipen 2 fills | VP | Buy | 1,350 | $74.26 | $100.3K | 6,000 | |
| Wei Che-Chia | Chairman and CEO | Buy | 152 | $73.31 | $11.1K | 17,987 | |
| Mii Yuh-Jier | EVP and Co-COO | Buy | 72 | $73.31 | $5.3K | 8,099 | |
| Chin Yung-Pei | EVP and Co-COO | Buy | 72 | $73.31 | $5.3K | 8,435 | |
| Zhang Kevin Xiaoqiang | SVP and Deputy Co-COO | Buy | 63 | $73.31 | $4.6K | 7,286 | |
| Hou Yung-Chin | SVP and Deputy Co-COO | Buy | 63 | $73.31 | $4.6K | 7,460 | |
| Fang Shu-Hua | SVP and GC | Buy | 57 | $73.31 | $4.2K | 6,652 | |
| Yeap Choh Fei | SVP | Buy | 57 | $73.31 | $4.2K | 6,493 | |
| Wu Shien-Yang | SVP | Buy | 57 | $73.31 | $4.2K | 6,805 | |
| Wang Ying-Lang | SVP | Buy | 55 | $73.31 | $4.0K | 6,445 | |
| Cao Min | VP | Buy | 55 | $73.31 | $4.0K | 6,717 | |
| Chang Tzonz-Sheng | SVP | Buy | 54 | $73.31 | $4.0K | 5,428 | |
| Lee Chun-Hsien | SVP | Buy | 54 | $73.31 | $4.0K | 5,989 | |
| Hsu Kuo-Chin | VP | Buy | 54 | $73.31 | $4.0K | 6,674 | |
| Lu Lee-Chung | VP | Buy | 52 | $73.31 | $3.8K | 6,434 | |
| Yoo Chue-San | VP | Buy | 51 | $73.31 | $3.7K | 6,641 | |
| Jang Syun-Ming | VP | Buy | 50 | $73.31 | $3.7K | 5,893 | |
| Lin Chris Horng-Dar | VP and CIO | Buy | 49 | $73.31 | $3.6K | 5,931 | |
| Chuang Juiping | VP | Buy | 49 | $73.31 | $3.6K | 4,242 | |
| Tien Bor-Zen 2 fills | VP | Buy | 49 | $73.31 | $3.6K | 270 | |
| Lin Shyue-Shyh | VP | Buy | 47 | $73.31 | $3.4K | 296 | |
| Chuang Tzu-Sou | VP | Buy | 47 | $73.31 | $3.4K | 5,806 | |
| Ku Yao-Ching | VP | Buy | 47 | $73.31 | $3.4K | 141 | |
| Chen Pei-Hung | VP | Buy | 46 | $73.31 | $3.4K | 1,349 | |
| He Jun | VP | Buy | 46 | $73.31 | $3.4K | 5,361 | |
| Yuan Lipen | VP | Buy | 42 | $73.31 | $3.1K | 1,260 | |
| Wu Yi-Huang | VP | Buy | 41 | $73.31 | $3.0K | 120 | |
| Hwang Yuan-Ko | VP | Buy | 40 | $73.31 | $2.9K | 259 | |
| Lu Chin-Sheng | VP | Buy | 39 | $73.31 | $2.9K | 113 | |
| Chen Chih-Ho | Controller | Buy | 33 | $73.31 | $2.4K | 170 | |
| Huang Jen-Chau | SVP and CFO | Buy | 29 | $73.31 | $2.1K | 3,553 | |
| Tien Bor-Zen | VP | Buy | 1,000 | $73.06 | $73.1K | 14,051 | |
| Tien Bor-Zen 3 fills | VP | Buy | 1,015 | $72.73 | $73.8K | 5,000 | |
| Tien Bor-Zen 4 fills | VP | Buy | 4,000 | $74.33 | $297.3K | 13,051 | |
| Lin Shyue-Shyh | VP | Buy | 1,000 | $74.13 | $74.1K | 30,269 | |
| Lin Shyue-Shyh | VP | Buy | 1,000 | $72.65 | $72.7K | 29,269 | |
| Tien Bor-Zen | VP | Buy | 10 | $405.00 | $4.1K | 117 | |
| Lin Shyue-Shyh 3 fills | VP | Buy | 3,000 | $71.79 | $215.4K | 28,269 | |
| Chen Chih-Ho | Controller | Sell | 50 | $75.22 | $3.8K | 363 −12.1% of holding | |
| Chen Chih-Ho | Controller | Buy | 50 | $74.60 | $3.7K | 413 | |
| Wei Che-Chia | Chairman and CEO | Buy | 146 | $76.62 | $11.2K | 17,835 | |
| Chin Yung-Pei | EVP and Co-COO | Buy | 69 | $76.62 | $5.3K | 8,363 | |
| Mii Yuh-Jier | EVP and Co-COO | Buy | 68 | $76.62 | $5.2K | 8,027 | |
| Zhang Kevin Xiaoqiang | SVP and Deputy Co-COO | Buy | 61 | $76.62 | $4.7K | 7,223 | |
| Hou Yung-Chin | SVP and Deputy Co-COO | Buy | 61 | $76.62 | $4.7K | 7,397 | |
| Fang Shu-Hua | SVP and GC | Buy | 54 | $76.62 | $4.1K | 6,595 | |
| Cao Min | VP | Buy | 54 | $76.62 | $4.1K | 6,662 | |
| Wu Shien-Yang | SVP | Buy | 54 | $76.62 | $4.1K | 6,748 | |
| Yeap Choh Fei | SVP | Buy | 53 | $76.62 | $4.1K | 6,436 | |
| Wang Ying-Lang | SVP | Buy | 53 | $76.62 | $4.1K | 6,390 | |
| Hsu Kuo-Chin | VP | Buy | 52 | $76.62 | $4.0K | 6,620 | |
| Chang Tzonz-Sheng | SVP | Buy | 52 | $76.62 | $4.0K | 5,374 | |
| Yoo Chue-San | VP | Buy | 51 | $76.62 | $3.9K | 6,590 | |
| Lee Chun-Hsien | SVP | Buy | 50 | $76.62 | $3.8K | 5,935 | |
| Lu Lee-Chung | VP | Buy | 49 | $76.62 | $3.8K | 6,382 | |
| Liaw Yung-Haw | VP | Buy | 48 | $76.62 | $3.7K | 6,241 | |
| Chuang Juiping | VP | Buy | 47 | $76.62 | $3.6K | 4,193 | |
| Jang Syun-Ming | VP | Buy | 47 | $76.62 | $3.6K | 5,843 | |
| Ku Yao-Ching | VP | Buy | 46 | $76.62 | $3.5K | 94 | |
| Lin Chris Horng-Dar | VP and CIO | Buy | 46 | $76.62 | $3.5K | 5,882 | |
| Tien Bor-Zen 2 fills | VP | Buy | 46 | $76.62 | $3.5K | 228 | |
| He Jun | VP | Buy | 45 | $76.62 | $3.4K | 5,315 | |
| Chuang Tzu-Sou | VP | Buy | 45 | $76.62 | $3.4K | 5,759 | |
| Chen Pei-Hung | VP | Buy | 44 | $76.62 | $3.4K | 1,303 | |
| Lin Shyue-Shyh | VP | Buy | 44 | $76.62 | $3.4K | 249 | |
| Yuan Lipen | VP | Buy | 40 | $76.62 | $3.1K | 1,218 | |
| Hwang Yuan-Ko | VP | Buy | 40 | $76.62 | $3.1K | 219 | |
| Wu Yi-Huang | VP | Buy | 39 | $76.62 | $3.0K | 79 | |
| Lu Chin-Sheng | VP | Buy | 37 | $76.62 | $2.8K | 74 | |
| Chen Chih-Ho | Controller | Buy | 31 | $76.62 | $2.4K | 137 | |
| Huang Jen-Chau | SVP and CFO | Buy | 28 | $76.62 | $2.1K | 3,524 | |
| Fang Shu-Hua 2 fills | SVP and GC | Buy | 2,000 | $77.09 | $154.2K | 8,206 | |
| Tien Bor-Zen | VP | Buy | 1,000 | $75.70 | $75.7K | 1,000 | |
| Tien Bor-Zen | VP | Buy | 1,000 | $76.64 | $76.6K | 12,051 | |
| Yuan Lipen | VP | Buy | 1,000 | $79.19 | $79.2K | 5,000 | |
| Yuan Lipen | VP | Buy | 1,000 | $75.26 | $75.3K | 4,000 |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.