The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 13, 2026 | Liu Chitung | CFO & SVP | Sell(S) | 1.9M | $154.89 | $294.3M |
| Jun 30, 2026 | Hu Che-Jen | Vice President | Sell(S) | 10K | $171.30 | $1.7M |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Issuer: United Microelectronics Corp, SEC CIK 0001033767. The symbol on a Form 4 is typed by the filer, so this page follows the issuer with the newest filing under UMC and shows every filing by that issuer.
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-05. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for UMC