StockCIK 1033767

UNITED MICROELECTRONICS CORP (UMC): Insider Trades and Fund Holdings

In the past 12 months, UNITED MICROELECTRONICS CORP insiders reported 0 open-market purchases worth $0 and 3 sales worth $230.4M; 0 of the sales were reported as made under a 10b5-1 trading plan.

0Insider buys, 12 months

$0Bought by insiders, 12 months

$230.4MSold by insiders, 12 months

0Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Sep 22, 2026.

Recent 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

Insiders who traded in the past year

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

Tracked funds that report UMC

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Bridgewater Associates	Q2 2026	0	$0	0.00%	▼ Sold out

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →