Greedy Insider
TSM Insider Trades and Greediness Scores
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) insider trades: since Mar 22, 2026, Greedy Insider recorded 251 open-market buys and 2 sales on Form 4 from 32 insiders. The strongest recent filing scored 83 (Strong).
Who bought and who sold
Across the last 253 scoreable Form 4 transactions in TSM, 251 were open-market purchases and 2 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| Tien Bor-Zen | VP | Buy | 7.0 | 555.73 | 2026-10-07 | 51 | View |
| He Jun | VP | Buy | 43.0 | 3413.77 | 2026-10-07 | 68 | View |
| Wu Shien-Yang | SVP | Buy | 53.0 | 4207.67 | 2026-10-07 | 68 | View |
| Lu Lee-Chung | VP | Buy | 49.0 | 3890.11 | 2026-10-07 | 69 | View |
| Chuang Tzu-Sou | VP | Buy | 46.0 | 3651.94 | 2026-10-07 | 61 | View |
| Wang Ying-Lang | SVP | Buy | 52.0 | 4128.28 | 2026-10-07 | 69 | View |
| Lee Chun-Hsien | SVP | Buy | 51.0 | 4048.89 | 2026-10-07 | 69 | View |
| Chen Chih-Ho | Controller | Buy | 31.0 | 2461.09 | 2026-10-07 | 63 | View |
| Wei Che-Chia | Chair | Buy | 144.0 | 11432.16 | 2026-10-07 | 76 | View |
| Chang Tzonz-Sheng | SVP | Buy | 51.0 | 4048.89 | 2026-10-07 | 69 | View |
The strongest recent filing
Wei Che-Chia (Chair) bought 160 shares of TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD on May 8, 2026, a filing that scored 83 (Strong). It scored Strong because a senior insider was trading and several insiders moved the same way within a week. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
A cluster buy is present: 28 insiders (Chen Pei-Hung, Tien Bor-Zen, Yeap Choh Fei, Wang Ying-Lang) traded TSM the same direction within a 7-day window. Shared conviction is a stronger structural signal than a lone trade.
How this compares with TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD's own history
Open-market buys make up 99% of the 253 scoreable TSM transactions on record between Mar 22, 2026 and Oct 7, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 253
- Open-market buys: 251
- Sales: 2
- Distinct insiders: 32
- Strongest recent Greediness Score: 83 (Strong)
Primary sources
Related
- Strongest filing
- TSM in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.