United Microelectronics Corp 6-K, filed Apr 15, 2026
United Microelectronics Corp (UMC)
About this 6-K
United Microelectronics Corp filed this 6-K on April 15, 2026.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
OF THE SECURITIES EXCHANGE ACT OF 1934
April 15, 2026
(Commission File Number: 001-15128)
United Microelectronics Corporation
(Translation of registrant’s name into English)
No. 3 Li-Hsin 2nd Road,
Hsinchu Science Park,
Hsinchu, Taiwan, R.O.C.
(Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.
Form 20-F Form 40-F
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101 (b) (1):
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101 (b) (7):
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereto duly authorized.
United Microelectronics Corporation |
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By: |
Chitung Liu |
Name: |
Chitung Liu |
Title: |
CFO |
Date: April 15, 2026
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www.umc.com
Exhibit
Exhibit Description
99.1 Announcement on 2026/04/15: UMC will convene Q1 2026 Investor Conference
99.2 Announcement on 2026/04/09: the trading and pledge of UMC common shares by directors, executive officers and 10% shareholders of UMC
Exhibit 99.1
UMC will convene Q1 2026 Investor Conference
1. Date of institutional investor conference: 2026/04/29
2. Time of institutional investor conference: 17:00
3. Location of institutional investor conference: Online teleconference
4. Outline of institutional investor conference: UMC Q1 2026 Financial and Operating Results
5. Any other matters that need to be specified: None
Exhibit 99.2
United Microelectronics Corporation
For the month of March, 2026
This is to report 1) the trading of directors, executive officers and 10% shareholders of United Microelectronics Corporation (“UMC”) (NYSE: UMC); 2) the pledge and clear of pledge of UMC common shares by directors, executive officers and 10% shareholders of UMC;
Title |
Name |
Number of shares as of February 28, 2026 |
Number of shares as of March 31, 2026 |
Changes |
Senior Vice President Senior Vice President Vice President Vice President Vice President Vice President |
Oliver Chang Chitung Liu JT Lin Jerry CJ Hu Francia Hsu Eric Chen |
3,558,289 4,612,917 560,060 2,405,280 756,280 1,534,280 |
3,549,289 4,012,917 515,060 2,395,280 731,280 1,514,280 |
(9,000) (600,000) (45,000) (10,000) (25,000) (20,000) |
Title |
Name |
Number of shares as of February 28, 2026 |
Number of shares as of March 31, 2026 |
Changes |
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