UNITED MICROELECTRONICS CORP (UMC)
NYSE · Semiconductors & Related Devices · Inc. F5
What they're doing
Between 2026-06-21 and 2026-09-19, public records show 3 signals for UNITED MICROELECTRONICS CORP. Most notable: 2026-09-16: Liu Chitung (officer) sold $170.8M of stock; 2026-09-17: Liu Chitung (officer) sold $58.0M of stock; 2026-06-30: HU CHE-JEN (officer) sold $1.7M of stock. Federal contract obligations over the last 24 months total $0. This summary was assembled automatically from SEC EDGAR, USAspending.gov, U.S. Senate lobbying disclosures and Wikimedia pageview counts.
Generated 2026-09-19 from public records.
Signals, last 12 months
- Large insider saleLIN JEN-TSUNG (officer) sold $1.6M of stock
- Large insider saleLiu Chitung (officer) sold $58.0M of stock
- Large insider saleLiu Chitung (officer) sold $170.8M of stock
- Large insider saleHU CHE-JEN (officer) sold $1.7M of stock
Insider transactions
| Date | Insider | Role | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-22 | LIN JEN-TSUNG | officer | S | 10,000 | 163 | $1,630,000 |
| 2026-09-17 | Liu Chitung | officer | S | 400,000 | 145 | $58,000,000 |
| 2026-09-16 | Liu Chitung | officer | S | 1,200,000 | 142.33 | $170,799,600 |
| 2026-09-07 | Liu Chitung | officer | J | 1,000,000 | 0 | $0 |
| 2026-09-07 | Liu Chitung | officer | J | 1,000,000 | 0 | $0 |
| 2026-06-30 | HU CHE-JEN | officer | S | 10,000 | 171.3 | $1,713,000 |
Federal contracts
No federal contract actions on record for this recipient mapping.
Lobbying
No federal lobbying filings on record for this client mapping.
Public attention
7-day average 100 views/day vs 90-day median 103.