Che-Chia Wei insider trades: Taiwan Semiconductor Manufacturing (TSM) stock purchases
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Che-Chia reports to the SEC
Open-market buys and sales
7 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 7, 2026 | TSM | ↑ Buy | 144 | $79.39 | $11K | By ESPP Trust | Oct 8, 2026 (1d) |
| Sep 7, 2026 | TSM | ↑ Buy | 149 | $76.20 | $11K | By ESPP Trust | Sep 9, 2026 (2d) |
| Aug 7, 2026 | TSM | ↑ Buy | 152 | $73.31 | $11K | By ESPP Trust | Aug 10, 2026 (3d) |
| Jul 7, 2026 | TSM | ↑ Buy | 146 | $76.62 | $11K | By ESPP Trust | Jul 9, 2026 (2d) |
| Jun 5, 2026 | TSM | ↑ Buy | 150 | $76.01 | $11K | By ESPP Trust | Jun 9, 2026 (4d) |
| May 8, 2026 | TSM | ↑ Buy | 160 | $71.82 | $11K | By ESPP Trust | May 11, 2026 (3d) |
| Apr 9, 2026 | TSM | ↑ Buy | 186 | $57.87 | $11K | By ESPP Trust | Apr 13, 2026 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other TSM insiders
Open-market trades in the last 12 months
About Che-Chia Wei's insider trades
Che-Chia Wei is Chairman and CEO at Taiwan Semiconductor Manufacturing (TSM). Since Apr 9, 2026, Che-Chia has reported 7 open-market purchases worth $79K and no sales on SEC Form 4. In the last 12 months: 7 buys ($79K).
Their filings also include grants and awards (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every TSM insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.