Are UMC insiders buying or selling?

Over the last 90 days, UMC insiders were net sellers, reporting $0.00 of open-market purchases and $230,429,680 of sales.

When was the last UMC insider purchase?

No open-market insider purchase of United Micro Electronics - ADR stock was reported in the last 90 days.

Where does UMC insider trading data come from?

Watch Insiders reads the SEC Form 4 filings that United Micro Electronics - ADR officers, directors, and 10% owners submit to EDGAR, and refreshes this page daily.

UMCSector not reported

United Micro Electronics - ADR (UMC) Insider Trading

In the last 90 days, 2 United Micro Electronics - ADR (UMC) insiders reported no open-market purchases and 2 sales totaling $230,429,680. Source: SEC Form 4 filings.

SEC-reported filing activity is provided for research purposes and is not investment advice.

90-day C-suite buyers: 0
90-day purchase value: $0.00
Corporate buyers: 0
Latest transaction: Sep 22, 2026

Executive filings

Open-market transaction history

Purchase and sale summaries are ordered by the latest reported transaction date.

Open-market insider purchase and sale transactions
Date	Insider name	Role	Type	Shares	Price	Total value
Sep 22, 2026	Jen-Tsung Lin	Vice President	Sale	10,000	$163.00	$1,630,000
Sep 17, 2026	Chitung Liu	CFO & SVP	Sale	1,600,000	$143.00	$228,799,680
Jul 13, 2026	Chitung Liu	CFO & SVP	Sale	1,900,000	$154.89	$294,291,000
Jun 30, 2026	Che-Jen Hu	Vice President	Sale	10,000	$171.30	$1,713,000

Common questions

UMC insider trading FAQ

Are UMC insiders buying or selling?: Over the last 90 days, UMC insiders were net sellers, reporting $0.00 of open-market purchases and $230,429,680 of sales.
When was the last UMC insider purchase?: No open-market insider purchase of United Micro Electronics - ADR stock was reported in the last 90 days.
Where does UMC insider trading data come from?: Watch Insiders reads the SEC Form 4 filings that United Micro Electronics - ADR officers, directors, and 10% owners submit to EDGAR, and refreshes this page daily.