Insider tradingForm 4

UNITED MICROELECTRONICS CORP (UMC) Insider Trading

3 open-market trades reported since Sep 17, 2026: 0 purchases worth $0 and 3 sales worth $230.4M.

By insider

Insider	Role	Buys	Bought	Sells	Sold	Latest
Jen-Tsung Lin	President	0	$0	1	$1.63M	Sep 22, 2026
Chitung Liu	CFO	0	$0	2	$228.8M	Sep 17, 2026

UMC insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Sep 22	Sep 22	Jen-Tsung LinPresident	President	▼ SELL	10,000	163.00	$1.63M	−0.8%	Form 4 ↗
Sep 17	Sep 16	Chitung LiuCFO	CFO	▼ SELL	1,200,000	142.33	$170.8M	−28%	Form 4 ↗
Sep 17	Sep 17	Chitung LiuCFO	CFO	▼ SELL	400,000	145.00	$58.0M	−13%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings