TSM insider buying and SEC filings, explained
Taiwan Semiconductor Manufacturing Co. Ltd. · CIK 1046179
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$2.4M
Insiders who bought
7
Sold (not marked 10b5-1)
$14.0M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Nov 1, 2026 | Purchase (code P) | Lipen Yuan (VP) bought 1,000 shares at $71.49 ($71K), reported as a purchase (code P). Holdings up 14% to 8,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 3, 2026, 8:07 AM ET |
| Oct 7, 2026 | Purchase (code P) | Lipen Yuan (VP) bought 40 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 3% to 1,341 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:35 AM ET |
| Oct 7, 2026 | Purchase (code P) | Choh Fei Yeap (SVP) bought 52 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 999%+ to 53 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:35 AM ET |
| Oct 7, 2026 | Purchase (code P) | Kevin Xiaoqiang Zhang (President / COO) bought 59 shares indirectly (by trust) at $79.39 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 7,406 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:35 AM ET |
| Oct 7, 2026 | Purchase (code P) | Chue-San Yoo (VP) bought 50 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,744 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:35 AM ET |
| Oct 7, 2026 | Purchase (code P) | Shien-Yang Wu (SVP) bought 53 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,915 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:32 AM ET |
| Oct 7, 2026 | Purchase (code P) | Che-Chia Wei (CEO and Director) bought 144 shares indirectly (by trust) at $79.39 ($11K), reported as a purchase (code P). Holdings by trust up 1% to 18,280 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:32 AM ET |
| Oct 7, 2026 | Purchase (code P) | Yi-Huang Wu (VP) bought 39 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 24% to 199 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:32 AM ET |
| Oct 7, 2026 | Purchase (code P) | Ying-Lang Wang (SVP) bought 52 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,551 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:30 AM ET |
| Oct 7, 2026 | Purchase (code P) | Yuh-Jier Mii (President / COO) bought 68 shares indirectly (by trust) at $79.39 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 8,238 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:30 AM ET |
| Oct 7, 2026 | Purchase (code P) | Bor-Zen Tien (VP) bought 47 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 13% to 353 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:30 AM ET |
| Oct 7, 2026 | Purchase (code P) | Chin-Sheng Lu (VP) bought 36 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 24% to 187 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:27 AM ET |
| Oct 7, 2026 | Purchase (code P) | Lee-Chung Lu (VP) bought 49 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,534 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:27 AM ET |
| Oct 7, 2026 | Purchase (code P) | Shyue-Shyh Lin (VP) bought 44 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 13% to 384 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:27 AM ET |
| Oct 7, 2026 | Purchase (code P) | Chris Horng-Dar Lin (VP and CIO) bought 44 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 999%+ to 45 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:25 AM ET |
| Oct 7, 2026 | Purchase (code P) | Chun-Hsien Lee (SVP) bought 51 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,092 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:24 AM ET |
| Oct 7, 2026 | Purchase (code P) | Yao-Ching Ku (VP) bought 46 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 24% to 234 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:24 AM ET |
| Oct 7, 2026 | Purchase (code P) | Yuan-Ko Hwang (VP) bought 39 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 13% to 338 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:21 AM ET |
| Oct 7, 2026 | Purchase (code P) | Jen-Chau Huang (CFO) bought 28 shares indirectly (by trust) at $79.39 ($2K), reported as a purchase (code P). Holdings by trust up 1% to 3,611 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:21 AM ET |
| Oct 7, 2026 | Purchase (code P) | Syun-Ming Jang (VP) bought 46 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,988 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:21 AM ET |
| Oct 7, 2026 | Purchase (code P) | Yung-Chin Hou (President / COO) bought 60 shares indirectly (by trust) at $79.39 ($5K), reported as a purchase (code P). New position of 60 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:17 AM ET |
| Oct 7, 2026 | Purchase (code P) | Kuo-Chin Hsu (VP) bought 52 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,781 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:17 AM ET |
| Oct 7, 2026 | Purchase (code P) | Jun He (VP) bought 43 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 999%+ to 45 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:17 AM ET |
| Oct 7, 2026 | Purchase (code P) | Tzu-Sou Chuang (VP) bought 46 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 999%+ to 47 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:12 AM ET |
| Oct 7, 2026 | Purchase (code P) | Min Cao (VP) bought 51 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,824 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:12 AM ET |
| Oct 7, 2026 | Purchase (code P) | Yung-Pei Chin (President / COO) bought 67 shares indirectly (by trust) at $79.39 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 8,573 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:12 AM ET |
| Oct 7, 2026 | Purchase (code P) | Tzonz-Sheng Chang (SVP) bought 51 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 999%+ to 52 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:12 AM ET |
| Oct 7, 2026 | Purchase (code P) | Shu-Hua Fang (SVP and GC) bought 53 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,761 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:12 AM ET |
| Oct 7, 2026 | Purchase (code P) | Juiping Chuang (VP) bought 46 shares indirectly (by trust) at $79.39 ($4K), reported as a purchase (code P). Holdings by trust up 999%+ to 48 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:12 AM ET |
| Oct 7, 2026 | Purchase (code P) | Pei-Hung Chen (VP) bought 43 shares indirectly (by trust) at $79.39 ($3K), reported as a purchase (code P). Holdings by trust up 3% to 1,438 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:11 AM ET |
| Oct 7, 2026 | Purchase (code P) | Chih-Ho Chen (Controller) bought 31 shares indirectly (by trust) at $79.39 ($2K), reported as a purchase (code P). Holdings by trust up 15% to 233 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 8, 2026, 6:11 AM ET |
| Sep 7, 2026 | Purchase (code P) | Yi-Huang Wu (VP) bought 40 shares indirectly (by trust) at $76.20 ($3K), reported as a purchase (code P). Holdings by trust up 33% to 160 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Chue-San Yoo (VP) bought 53 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,694 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Choh Fei Yeap (SVP) bought 54 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,547 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Kevin Xiaoqiang Zhang (President / COO) bought 61 shares indirectly (by trust) at $76.20 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 7,347 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Lipen Yuan (VP) bought 41 shares indirectly (by trust) at $76.20 ($3K), reported as a purchase (code P). Holdings by trust up 3% to 1,301 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Yuh-Jier Mii (President / COO) bought 71 shares indirectly (by trust) at $76.20 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 8,170 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Shien-Yang Wu (SVP) bought 57 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,862 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Che-Chia Wei (CEO and Director) bought 149 shares indirectly (by trust) at $76.20 ($11K), reported as a purchase (code P). Holdings by trust up 1% to 18,136 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Bor-Zen Tien (VP) bought 48 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 16% to 313 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Ying-Lang Wang (SVP) bought 54 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,499 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Chin-Sheng Lu (VP) bought 38 shares indirectly (by trust) at $76.20 ($3K), reported as a purchase (code P). Holdings by trust up 34% to 151 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Chris Horng-Dar Lin (VP and CIO) bought 47 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,978 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Shyue-Shyh Lin (VP) bought 44 shares indirectly (by trust) at $76.20 ($3K), reported as a purchase (code P). Holdings by trust up 15% to 340 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Chun-Hsien Lee (SVP) bought 52 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,041 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Lee-Chung Lu (VP) bought 51 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,485 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Syun-Ming Jang (VP) bought 49 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,942 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Yuan-Ko Hwang (VP) bought 40 shares indirectly (by trust) at $76.20 ($3K), reported as a purchase (code P). Holdings by trust up 15% to 299 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Kuo-Chin Hsu (VP) bought 55 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,729 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Jen-Chau Huang (CFO) bought 30 shares indirectly (by trust) at $76.20 ($2K), reported as a purchase (code P). Holdings by trust up 1% to 3,583 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Yao-Ching Ku (VP) bought 47 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 33% to 188 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Yung-Chin Hou (President / COO) bought 61 shares indirectly (by trust) at $76.20 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 7,521 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Juiping Chuang (VP) bought 50 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 4,292 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Shu-Hua Fang (SVP and GC) bought 56 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,708 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Jun He (VP) bought 46 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,407 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Tzu-Sou Chuang (VP) bought 47 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,853 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Chih-Ho Chen (Controller) bought 32 shares indirectly (by trust) at $76.20 ($2K), reported as a purchase (code P). Holdings by trust up 19% to 202 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Min Cao (VP) bought 56 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,773 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Yung-Pei Chin (President / COO) bought 71 shares indirectly (by trust) at $76.20 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 8,506 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Pei-Hung Chen (VP) bought 46 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 3% to 1,395 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 7, 2026 | Purchase (code P) | Tzonz-Sheng Chang (SVP) bought 53 shares indirectly (by trust) at $76.20 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,481 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Jul 2, 2026 | Purchase (code P) | Shu-Hua Fang (SVP and GC) bought 2,000 shares indirectly (by family member) at $77.09 ($154K), reported as a purchase (code P). Holdings by family member up 32% to 8,206 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 4, 2026 |
| Aug 18–19, 2026 | Purchase (code P) | Lipen Yuan (VP) bought 2,350 shares directly and indirectly (by spouse) between Aug 18 and Aug 19 at about $74.05 ($174K), reported as a purchase (code P). Direct holdings up 40% to 7,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 20, 2026 |
| Aug 7, 2026 | Purchase (code P) | Choh Fei Yeap (SVP) bought 57 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,493 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Kevin Xiaoqiang Zhang (President / COO) bought 63 shares indirectly (by trust) at $73.31 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 7,286 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Lipen Yuan (VP) bought 42 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 3% to 1,260 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Yi-Huang Wu (VP) bought 41 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 52% to 120 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Chue-San Yoo (VP) bought 51 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,641 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Yuh-Jier Mii (President / COO) bought 72 shares indirectly (by trust) at $73.31 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 8,099 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Ying-Lang Wang (SVP) bought 55 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,445 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Che-Chia Wei (CEO and Director) bought 152 shares indirectly (by trust) at $73.31 ($11K), reported as a purchase (code P). Holdings by trust up 1% to 17,987 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Shien-Yang Wu (SVP) bought 57 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,805 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Bor-Zen Tien (VP) bought 49 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 18% to 270 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Chris Horng-Dar Lin (VP and CIO) bought 49 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,931 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Lee-Chung Lu (VP) bought 52 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,434 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Shyue-Shyh Lin (VP) bought 47 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 19% to 296 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Chun-Hsien Lee (SVP) bought 54 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,989 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Chin-Sheng Lu (VP) bought 39 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 53% to 113 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Syun-Ming Jang (VP) bought 50 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,893 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Kuo-Chin Hsu (VP) bought 54 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,674 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Jen-Chau Huang (CFO) bought 29 shares indirectly (by trust) at $73.31 ($2K), reported as a purchase (code P). Holdings by trust up 1% to 3,553 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Yuan-Ko Hwang (VP) bought 40 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 18% to 259 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Yao-Ching Ku (VP) bought 47 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 50% to 141 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Jun He (VP) bought 46 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 1% to 5,361 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Tzu-Sou Chuang (VP) bought 47 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 1% to 5,806 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Yung-Chin Hou (President / COO) bought 63 shares indirectly (by trust) at $73.31 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 7,460 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Juiping Chuang (VP) bought 49 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 4,242 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Shu-Hua Fang (SVP and GC) bought 57 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,652 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Tzonz-Sheng Chang (SVP) bought 54 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 5,428 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Chih-Ho Chen (Controller) bought 33 shares indirectly (by trust) at $73.31 ($2K), reported as a purchase (code P). Holdings by trust up 24% to 170 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Pei-Hung Chen (VP) bought 46 shares indirectly (by trust) at $73.31 ($3K), reported as a purchase (code P). Holdings by trust up 4% to 1,349 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Min Cao (VP) bought 55 shares indirectly (by trust) at $73.31 ($4K), reported as a purchase (code P). Holdings by trust up 1% to 6,717 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 7, 2026 | Purchase (code P) | Yung-Pei Chin (President / COO) bought 72 shares indirectly (by trust) at $73.31 ($5K), reported as a purchase (code P). Holdings by trust up 1% to 8,435 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 10, 2026 |
| Aug 3, 2026 | Purchase (code P) | Bor-Zen Tien (VP) bought 1,000 shares at $73.06 ($73K), reported as a purchase (code P). Holdings up 8% to 14,051 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 4, 2026 |
| Jul 28, 2026 | Purchase (code P) | Bor-Zen Tien (VP) bought 1,015 shares in 2 share classes directly and indirectly (by spouse) at about $72.73 ($74K), reported as a purchase (code P). Holdings of Common Shares (2330.TW) by spouse up 25% to 5,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 30, 2026 |
| Jul 20–21, 2026 | Purchase (code P) | Bor-Zen Tien (VP) bought 4,010 shares in 2 share classes directly and indirectly (by spouse) between Jul 20 and Jul 21 at about $75.15 ($301K), reported as a purchase (code P). Direct holdings of Common Shares (2330.TW) up 8% to 13,051 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 23, 2026 |
| Jul 20–21, 2026 | Purchase (code P) | Shyue-Shyh Lin (VP) bought 2,000 shares between Jul 20 and Jul 21 at about $73.39 ($147K), reported as a purchase (code P). Holdings up 7% to 30,269 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 22, 2026 |
| Jul 19, 2026 | Purchase (code P) | Shyue-Shyh Lin (VP) bought 3,000 shares directly and indirectly (by spouse) at about $71.79 ($215K), reported as a purchase (code P). Direct holdings up 8% to 28,269 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 21, 2026 |
| Jul 14, 2026 | Sale | Chih-Ho Chen (Controller) sold 50 shares indirectly (by spouse) at $75.22 ($4K). Holdings by spouse down 12% to 363 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 16, 2026 |
| Jul 13, 2026 | Purchase (code P) | Chih-Ho Chen (Controller) bought 50 shares indirectly (by spouse) at $74.60 ($4K), reported as a purchase (code P). Holdings by spouse up 14% to 413 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 16, 2026 |
Showing the latest 100 transactions.
27 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
2 insiders bought in 30 days
$83K in purchases since Oct 7, 2026 · Purchases traded Oct 7, 2026 to Nov 1, 2026 · Active
| Insider | Value | Traded | Source |
|---|---|---|---|
| Che-Chia Wei (CEO) | $11K | Oct 7, 2026 | SEC filing |
| Lipen Yuan (VP) | $71K | Nov 1, 2026 | SEC filing |
5 insiders bought in 30 days
$1.6M in purchases since May 8, 2026 · Purchases traded May 8, 2026 to Sep 7, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Che-Chia Wei (CEO) | $11K | May 8, 2026 | SEC filing |
| Bor-Zen Tien (VP) | $140K | May 19, 2026 | SEC filing |
| Che-Chia Wei (CEO) | $11K | Jun 5, 2026 | SEC filing |
| Lipen Yuan (VP) | $75K | Jun 15, 2026 | SEC filing |
| Lipen Yuan (VP) | $79K | Jun 22, 2026 | SEC filing |
| Bor-Zen Tien (VP) | $152K | Jun 30, 2026 | SEC filing |
| Shu-Hua Fang (SVP and GC) | $154K | Jul 2, 2026 | SEC filing |
| Che-Chia Wei (CEO) | $11K | Jul 7, 2026 | SEC filing |
| Shyue-Shyh Lin (VP) | $215K | Jul 19, 2026 | SEC filing |
| Shyue-Shyh Lin (VP) | $147K | Jul 21, 2026 | SEC filing |
| Bor-Zen Tien (VP) | $301K | Jul 21, 2026 | SEC filing |
| Bor-Zen Tien (VP) | $74K | Jul 28, 2026 | SEC filing |
| Bor-Zen Tien (VP) | $73K | Aug 3, 2026 | SEC filing |
| Che-Chia Wei (CEO) | $11K | Aug 7, 2026 | SEC filing |
| Lipen Yuan (VP) | $174K | Aug 19, 2026 | SEC filing |
| Che-Chia Wei (CEO) | $11K | Sep 7, 2026 | SEC filing |
5 insiders bought in 30 days
$720K in purchases since Mar 22, 2026 · Purchases traded Mar 22, 2026 to Apr 9, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Bor-Zen Tien (VP) | $56K | Mar 22, 2026 | SEC filing |
| Choh Fei Yeap (SVP) | $56K | Mar 22, 2026 | SEC filing |
| Shyue-Shyh Lin (VP) | $111K | Mar 29, 2026 | SEC filing |
| Shyue-Shyh Lin (VP) | $164K | Mar 30, 2026 | SEC filing |
| Ursula M. Burns (Director) | $322K | Mar 31, 2026 | SEC filing |
| Che-Chia Wei (CEO) | $11K | Apr 9, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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