UMC · United Microelectronics Corp
Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 4 and 5. Form 3 supplies initial ownership rather than a trade; Form 4 must be filed within two business days of the trade.
Insider Sentiment Score
Peer-relative 0–100 rank of how aggressively insiders accumulated over the trailing 90 days. See the full ranking.
| Date | Insider | Role | Type | Security | Shares |
|---|---|---|---|---|---|
| 2026-07-13 | Liu Chitung |
CFO & SVP |
Sell↓
Filing footnotes — Common Shares (Direct)
New Taiwan Dollars Includes 1,210,000 shares of Restricted Stock Award (RSA) and a specified number of shares subject to the RSA will vest annually on December 5 from 2026 to 2029. |
Common Shares
|
1,900,000 |
| 2026-06-30 | HU CHE-JEN |
Vice President |
Sell↓
Filing footnotes — Common Shares (Direct)
New Taiwan Dollars Includes 828,800 shares of Restricted Stock Award (RSA) and a specified number of shares subject to the RSA will vest annually on December 5 from 2026 to 2029. |
Common Shares
|
10,000 |