UNITED STATES                                  
                       SECURITIES AND EXCHANGE COMMISSION                       
                             Washington, D.C. 20549                             


                                    FORM 6-K                                    


                            REPORT OFFOREIGN ISSUER                             
                                PURSUANT TO RULE                                
                                     13a-16                                     
                                       OR                                       
                                     15d-16                                     
                     OF THE SECURITIES EXCHANGE ACT OF 1934                     
                                  May 23, 2024                                  
                      (Commission File Number: 001-15128)                       


                       UnitedMicroelectronics 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 whetherthe registrant files or will file annual reports 
under cover
Form 20-F
or
Form 40-F.
                                 Form 20-FForm                                  
                                      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):




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                                   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
                                   
By:                     Chitung Liu
Name:                   Chitung Liu
Title:                  CFO        

Date: May 23, 2024

                                       2                                        

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  www.umc.com

                                    Exhibit                                     


                                                                            
Exhibit  Description                                                        
                                                                            
99.1     Announcement on 2024/05/08: To announce the registration           
         of capital reduction due to cancellation of the RSA                
                                                                            
99.2     Announcement on 2024/05/16: UMC will                               
         attend investor conferences on 2024/05/23                          
                                                                            
99.3     Announcement on 2024/05/07: April Revenue                          
                                                                            
99.4     Announcement on 2024/05/10: the trading and pledge of UMC common   
         shares by directors, executive officers and 10% shareholders of UMC

                                                                    Exhibit 99.1
To announce the registration of capital reduction due to cancellation of the RSA
1. Date of the competent authority's approval of capital reduction: 2024/05/07
2. Date of completion of capitalization change registration: 2024/05/07
3. Effect on the financial statements (including any discrepancy between the 
amount of
paid-in
capital and the no. ofshares outstanding, and the effect on net worth per 
share):
(1) Before the capital reduction: The
paid-in
capitalis NT$125,290,339,750; the shares outstanding are 12,529,033,975 
shares; book value per share is NT$30.16
(2) After the capital reduction: The
paid-in
capital is NT$125,285,889,070; the shares outstanding are 12,528,588,907 
shares; book value per share is NT$30.16
Note : Net worth per share was calculated based on the consolidated financial 
statements for the first quarter of 2024 reviewed by CPA.)
4. Plan for expected share replacement operations: NA
5.Estimated no. of listed common shares after capital reduction and new issue: 
NA
6. Estimated no. of listed common shares as a percentage of issued 
commonshares after capital reduction and new issue (No. of common shares after 
capital reduction/No. of issued common shares): NA
7. Countermeasures for poorcirculation of equity if the aforesaid estimated 
no. of listed common shares does not reach 60 million shares and the 
percentage does not reach 25% after capital reduction: NA
8. Any other matters that need to be specified: None

                                                                    Exhibit 99.2
               UMC will attend investor conferences on 2024/05/23               
1. Date of institutional investor conference: 2024/05/23~2024/05/24
2. Time of institutional investor conference: 09:00 AM
3.Location of institutional investor conference: Teleconference
4. Outline of institutional investor conference:
The Company will attend the "EV and Tech Virtual Conference 2024", held by
CGS-CIMB
Securities.
5. Any other matters that need to be specified: None

                                                                    Exhibit 99.3
                      United Microelectronics Corporation                       
                                  May 7, 2024                                   
This is to report the changes orstatus of 1) Sales volume, 2) Funds lent to 
other parties, 3) Endorsements and guarantees, and 4) Financial derivative 
transactions for the period of April 2024.


1) Sales volume (NT$ Thousand)



                                                                         
Period          Items       2024          2023        Changes       %    
April         Net sales   19,741,391    18,461,436    1,279,955    6.93 %
Year-to-Date  Net sales   74,373,490    72,670,883    1,702,607    2.34 %



2) Funds lent to other parties (NT$ Thousand): None



3) Endorsements and guarantees (NT$ Thousand)



                                                                                                    
Balance as of period end         This Month                  Last Month            Limit of lending 
                           (actual amount provided)    (actual amount provided)                     
UMC                                       8,874,918                   8,717,787         170,060,457 



Note: On February 22, 2017, March 7, 2018, October 24, 2018, July 24,2019, December 18, 2019,July 29, 2020, October 29,   
      2020, December 16, 2020, July 28, 2021, October 27, 2021, December 15, 2021, April 27, 2022, October 26, 2022,      
      December 14, 2022, April 26, 2023, July 26, 2023,December 13, 2023 and February 27, 2024, the board of directors    
      resolved to provide endorsement to USC(Xiamen)'s syndicated loan from banks for the amount up to CNYY 1,989 million.



4) Financial derivatives transactions: None

                                                                    Exhibit 99.4
                      United Microelectronics Corporation                       
                          For the month of April, 2024                          
This is to report1) 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% shareholdersof UMC;


1) The trading of directors, executive officers and 10% shareholders



                                                                                 
Title               Name        Number of shares    Number of shares    Changes  
                                  as of March       as of April 30,              
                                      31,                2024                    
                                     2024                                        
Vice President   Jerry CJ Hu           3,143,000           3,133,000    (10,000 )
                                                                                 



2) The pledge and clear of pledge of UMC common shares by directors, executive officers and 10% shareholders:



                                                                                   
Title               Name         Number of shares    Number of shares    Changes   
                                   as of March         as of April                 
                                       31,                 30,                     
                                      2024                2024                     
Vice President   Steven S Liu           2,700,000           2,200,000    (500,000 )
                                                                                   

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