Bor-Zen Tien, VP at Taiwan Semiconductor Manufacturing, bought TSM on Jul 28, 2026
Data as of Oct 16
- Traded
- Jul 28, 2026
- Disclosed
- Jul 30, 2026
- Filed
- 2 days after the trade
Form 4s are due within two business days.
Official filing (SEC Form 4) ↗
The price around the disclosure
TSM since disclosure
+2.3%
Similar stocks (XLK) since disclosure
+4.4%
XLK — its sector index fund
Change in closing price from Jul 30, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.
Our take
None of our tested rules fired on this trade.
Other trades in the same filing
- ▲ BUYBor-Zen Tien VPTSM Taiwan Semiconductor Manufacturing Co Ltd$3.9Kdisclosed Jul 30 · filed 2 days after the trade
- ▲ BUYBor-Zen Tien VPTSM Taiwan Semiconductor Manufacturing Co Ltd$68Kdisclosed Jul 30 · filed 2 days after the trade