United Microelectronics Corp 6-K, filed Oct 21, 2025
United Microelectronics Corp (UMC)
About this 6-K
United Microelectronics Corp filed this 6-K on October 21, 2025.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
OF THE SECURITIES EXCHANGE ACT OF 1934
October 21, 2025
(Commission File Number: 001-15128)
United Microelectronics 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 whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.
Form 20-F Form 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):
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 |
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By: |
Chitung Liu |
Name: |
Chitung Liu |
Title: |
CFO |
Date: October 21, 2025
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www.umc.com
Exhibit
Exhibit Description
99.1 Announcement on 2025/10/21: Announcement of the Company’s Board Meeting Date of Q3, 2025 Consolidated Financial Report
99.2 Announcement on 2025/10/21: Supplement to the unsecured straight corporate bond issuance authorized by the Board of Director resolution passed on April 23rd, 2025
Exhibit 99.1
Announcement of the Company’s Board Meeting Date of Q3, 2025 Consolidated Financial Report
1. Date of a notice of the board of directors meeting is issued: 2025/10/21
2. Expected date of the board of directors meeting is convened: 2025/10/29
3. Expected year and quarter of the financial reports or the annual self-assessed financial information submitted to the board of directors or approved by the board of directors:
Q3, 2025 Consolidated Financial Report
4. Any other matters that need to be specified: None
Exhibit 99.2
Supplement to the unsecured straight corporate bond issuance authorized by the Board of Director resolution passed on April 23rd, 2025
1. Date of the board of directors’ resolution: NA
2. Name [issue no.__ of (secured, unsecured) corporate bonds of ___________ (company)]:
United Microelectronics Corporation 3rd unsecured straight corporate bond issuance in 2025
3. Whether to adopt shelf registration (Yes/No): No
4. Total amount issued: NT$5,000 million
5. Face value per bond: NT$1 million
6. Issue price: At par
7. Issuance period: 3 years
8. Coupon rate: Fixed rate, 1.70% p.a.
9. Types, names, monetary values and stipulations of collaterals: N/A
10. Use of the funds raised by the offering and utilization plan: Debt Repayment
11. Underwriting method: Public offering through underwriters
12. Trustees of the corporate bonds: CTBC Bank Co., Ltd
13. Underwriter or agent: Yuanta Securities Co., Ltd as the lead underwriter
14. Guarantor(s) for the issuance: None
15. Agent for payment of the principal and interest: CTBC Bank Co., Ltd
16. Certifying institution: None
17. Where convertible into shares, the rules for conversion: N/A
18. Sell-back conditions: None
19. Buyback conditions: None
20. Reference date for any additional share exchange, stock swap, or subscription: N/A
21. Possible dilution of equity in case of any additional share exchange, stock swap, or subscription: N/A
22.Any other matters that need to be specified: None