Chitung Liu insider trades: United Microelectronics (UMC) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Chitung reports to the SEC
Open-market buys and sales
1 trade reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | UMC | ↓ Sell | 1,600,000 | $143.00 | $228.8M | Direct | Sep 17, 2026 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other UMC insiders
Open-market trades in the last 12 months
About Chitung Liu's insider trades
Chitung Liu is CFO & SVP at United Microelectronics (UMC). Since Sep 17, 2026, Chitung has reported no open-market purchases and 1 sale worth $228.8M on SEC Form 4. In the last 12 months: 1 sale ($228.8M).
Their filings also include other transactions (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 UMC insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.