United Microelectronics Ownership & Insider Activity

United Microelectronics (UMC) institutional and insider ownership, recent insider transactions and ownership breakdown.

Institutional investors hold 2.2%. Over the past 90 days, insiders made 2 sales worth $230.4M.

Shares Outstanding

2.508B

Shares Float

2.341B

Institutional Shares Held

55.357M

Institutional % Held

2.2%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$230.4M total

Net Activity

Net Selling

Net Value (90d)

-$230.4M

United Microelectronics Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Sep 22, 2026	JENTSUNG LIN	VICE PRESIDENT	SELL	10.000K	$163.00	$1.6M
Sep 16, 2026	Chitung Liu	CFO & SVP	SELL	1.600M	$143.00	$228.8M
Jul 13, 2026	Chitung Liu	CFO & SVP	SELL	1.900M	$154.89	$294.3M
Jun 30, 2026	CHEJEN HU	VICE PRESIDENT	SELL	10.000K	$171.30	$1.7M