Chitung Liu - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Chitung Liu has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $294.29M.
Profile
Chitung Liu is a corporate insider at UNITED MICROELECTRONICS CORP (UMC). Liu has reported 1 insider filing with the SEC since 2026. The most recent filing was in July 2026.
| Role | CFO & SVP |
|---|---|
| Notability | 20/100 |
Board memberships
- UNITED MICROELECTRONICS CORP
Trading Pattern
InsiderAlpha's records for Chitung Liu go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Chitung Liu has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- CFO & SVP at UNITED MICROELECTRONICS CORP (UMC) - 1 filing, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-13 | UMC | UNITED MICROELECTRONICS CORP | S - Open-market sale | 1.90M | $154.89 | $294.29M |
Companies - Last 90 Days
- UNITED MICROELECTRONICS CORP (UMC) - 1 filing, last 2026-07-13
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Chitung Liu has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Che-Jen Hu - $1.71M of UMC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Mahesh Choudhury
- Jonathan H. Cohen
- Ryan Cohen
- Charles K. Cohn
- Coliseum Capital Management, LLC
- Column Group IV GP, LP
- Connect Midstream, LLC
- CONSTELLATION SOFTWARE INC
Frequently Asked Questions
Who is Chitung Liu?
Chitung Liu is a corporate insider at UNITED MICROELECTRONICS CORP (UMC). Liu has reported 1 insider filing with the SEC since 2026. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Chitung Liu submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Chitung Liu been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($294.29M) across all tracked filings.
Where can I see all of Chitung Liu's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Chitung Liu profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.