UNITED MICROELECTRONICS CORP insider trading
UMC$23.92-2.35 (-8.95%)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+225.4%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
AI Activity Analysis
PremiumComing soon
Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| UMC | Jen-Tsung Lin | Open market sell$1.63M | -0.9% | $163.00 | $1.63M | Sep 22, 2026 | Sep 22, 2026 |
| UMC | Chitung Liu | Open market sell$58M | -9.6% | $145.00 | $58M | Sep 17, 2026 | Sep 17, 2026 |
| UMC | Chitung Liu | Open market sell$171M | -22.3% | $142.33 | $171M | Sep 16, 2026 | Sep 17, 2026 |
| UMC | Chitung Liu | Open market sell$294M | -25.8% | $154.89 | $294M | Jul 13, 2026 | Jul 13, 2026 |
| UMC | Che-Jen Hu | Open market sell$1.71M | -0.3% | $171.30 | $1.71M | Jun 30, 2026 | Jun 30, 2026 |