Key facts
- This page summarizes Chitung Liu's Form 3 filing for UNITED MICROELECTRONICS CORP (UMC).
- 0 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 18 Mar 2026, 06:18.
Chitung Liu - 18 Mar 2026 Form 3 Insider Report for UNITED MICROELECTRONICS CORP (UMC)
- Reporting relationship
- CFO & SVP
- Issuer ticker
- UMC
- Reported as of
- 18 Mar 2026
- Net transaction value
- $0
- Reporting owner signature
- /s/Chitung Liu
Source evidence
Original filing metadata and source links for verification.
3 source fields
Reporting owner
1 detail
Key filing fact
Chitung Liu filed Form 3 for UNITED MICROELECTRONICS CORP (UMC) on 18 Mar 2026.
Change
- No earlier filing in this sequence is available for direct comparison.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Official SEC source
View source filing
Ownership activity is grounded in SEC Form 3 disclosures.
Reporting Owners (1)
CIK 0002120081
Primary reporting owner
Liu Chitung
- Relationship
- CFO & SVP
- Address
- 8F, NO.68, SEC. 1, NEIHU RD.,, TAIPEI, TAIWAN
- Signature
- /s/Chitung Liu
- Signature date
- 18 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
UMC
holding
Common Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 5,222,917
- Date
- 18 Mar 2026
- Ownership
- Direct
- Footnotes
- F1
UMC
holding
Common Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 150,000
- Date
- 18 Mar 2026
- Ownership
- By Spouse
UMC
holding
Common Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,000,000
- Date
- 18 Mar 2026
- Ownership
- By CTBC Bank Trust
- Footnotes
- F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 2 footnotes
Footnote F1
Includes 1,210,000 shares of Restricted Stock Award (RSA) and a specified number of shares subject to the RSA will vest annually on December 5 from 2026 to 2029.
Footnote F2
The shares are under Trust with Discretion Reserved.