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Exhibit

Exhibit Description

 

99.1 Announcement on 2025/06/05: May Revenue

 

 

 


 

Exhibit 99.1

United Microelectronics Corporation

June 5, 2025

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 May 2025.

 

1)
Sales volume (NT$ Thousand)

Period

Items

2025

2024

Changes

%

May

Net sales

19,480,057

19,509,486

(29,429)

(0.15)%

Year-to-Date

Net sales

97,793,544

93,882,976

3,910,568

4.17%

 

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

 

3)
Endorsements and guarantees (NT$ Thousand)

Balance as of period end

This Month

(actual amount provided)

Last Month

(actual amount provided)

Limit of lending

UMC

5,907,636

6,256,068

175,772,204

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, February 27, 2024 ,July 31, 2024, December 18, 2024 and February 26, 2025, the board of directors resolved to provide endorsement to USC(Xiamen)’s syndicated loan from banks for the amount up to CNY¥ 1,428 million.

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

238,800

0

  Fair Value

0

0

1,651

0

  Net profit (loss) from Fair Value

0

0

2,688

0

  Written-off Trading

 

 

 

 

  Contracts

0

0

3,153,635

0

  Realized profit (loss)

0

0

18,687

0