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Exhibit

Exhibit Description

 

99.1 Announcement on 2026/07/06: June Revenue

 

 

 

 


 

Exhibit 99.1

United Microelectronics Corporation

July 6, 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 June 2026.

 

1)
Sales volume (NT$ Thousand)

Period

Items

2026

2025

Changes

%

June

Net sales

23,124,962

18,823,070

4,301,892

22.85%

Year-to-Date

Net sales

129,770,564

116,616,614

13,153,950

11.28%

 

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

2,670,360

0

  Fair Value

0

0

(11,885)

0

  Net profit (loss) from Fair Value

0

0

(11,232)

0

  Written-off Trading

 

 

 

 

  Contracts

0

0

5,849,595

0

  Realized profit (loss)

0

0

(1,589)

0