UMC Insider Activity
View recent SEC Form 4 insider transactions for UMC, including purchases, sales, option exercises, and other insider filings.
| Date | Insider | Type | Quantity | Price | Total Value | Shares Owned |
|---|---|---|---|---|---|---|
| Sep 17, 2026 | Liu Chitung | Sale | 400,000 | $145.00 | $58,000,000.00 | 2,639,757 |
| Sep 16, 2026 | Liu Chitung | Sale | 1,200,000 | $142.33 | $170,799,600.00 | 3,039,757 |
| Sep 07, 2026 | Liu Chitung | Buy | 1,000,000 | $0.00 | $0.00 | 4,322,917 |
| Jul 13, 2026 | Liu Chitung | Sale | 1,900,000 | $154.89 | $294,291,000.00 | 3,322,917 |
| Jun 30, 2026 | HU CHE-JEN | Sale | 10,000 | $171.30 | $1,713,000.00 | 3,214,080 |
Showing 5 of 5