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Exhibit

Exhibit Description

 

99.1 Announcement on 2026/02/05: January Revenue

 

 

 

 


 

United Microelectronics Corporation

February 5, 2026

This is to report the changes or status of 1) Sales volume, 2) Funds lent to other parties, 3) Endorsements and guarantees, and 4) Financial derivative transactions for the period of January 2026.

 

1)
Sales volume (NT$ Thousand)

Period

Items

2026

2025

Changes

%

January

Net sales

20,862,150

19,806,795

1,055,355

5.33%

Year-to-Date

Net sales

20,862,150

19,806,795

1,055,355

5.33%

 

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

 

3)
Endorsements and guarantees (NT$ Thousand): None

 

4)
Financial derivatives transactions:

a Not under hedging accounting: NT$ thousand

UMC

  Financial instruments

Option

Forwards

IRS

 

Put

Call

 

 

  Deposit Paid

0

0

0

0

  Royalty Income (Paid)

0

0

0

0

  Unwritten-off Trading

 

 

 

 

  Contracts

0

0

565,380

0

  Fair Value

0

0

3,920

0

  Net profit (loss) from Fair Value

0

0

4,574

0

  Written-off Trading

 

 

 

 

  Contracts

0

0

691,840

0

  Realized profit (loss)

0

0

(3,346)

0