3 insiders reported 7 Form 4 transactions for UNITED MICROELECTRONICS CORP (UMC) over the past 18 months (most recent 2026-09-22). Recent activity: LIN JEN-TSUNG (Vice President) Sell 10,000 shares, Liu Chitung (CFO & SVP) Sell 1.2M shares, Liu Chitung (CFO & SVP) Sell 400,000 shares, Liu Chitung (CFO & SVP) Buy 1.0M shares, Liu Chitung (CFO & SVP) Sell 1.0M shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-22 | LIN JEN-TSUNG | Vice President | Sell | 10,000 | $1.6M |
| 2026-09-17 | Liu Chitung | CFO & SVP | Sell | 1.2M | $170.8M |
| 2026-09-17 | Liu Chitung | CFO & SVP | Sell | 400,000 | $58.0M |
| 2026-09-08 | Liu Chitung | CFO & SVP | Buy | 1.0M | $0 |
| 2026-09-08 | Liu Chitung | CFO & SVP | Sell | 1.0M | $0 |
| 2026-07-13 | Liu Chitung | CFO & SVP | Sell | 1.9M | $294.3M |
| 2026-06-30 | HU CHE-JEN | Vice President | Sell | 10,000 | $1.7M |
来源：SEC Form 4 申报文件 · 截至 2026-09-22