SEC Form 4 · accession 0001193125-26-393652
UNITED MICROELECTRONICS CORP · UMC
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Chitung Liu
Officer — CFO & SVP
Period of report
Sep 16, 2026
Accepted (ET)
Sep 17, 2026 · 6:07 am EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001033767
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common SharesF1,F2 | Sep 16, 2026 | S | 1,200,000 | $142.333 | D | 3,039,757 | D | |
| Common SharesF1,F2 | Sep 17, 2026 | S | 400,000 | $145.00 | D | 2,639,757 | D | |
| Common Shares | holding | — | — | — | 150,000 | I | By Spouse | |
| Common SharesF3 | holding | — | — | — | 1,000,000 | I | By CTBC Bank Trust |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1New Taiwan Dollars
- F2Includes 1,126,840 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.
- F3The shares are under Trust with Discretion Reserved.