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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 |
-- |
-- |
-- |
-- |
-- |