United Microelectronics (NYSE: UMC) sets bond conversion terms and books NTD 248.9M gain
Rhea-AI Filing Summary
United Microelectronics Corporation reports two corporate actions. First, the company confirms that its 1st domestic unsecured convertible corporate bond has become effective upon filing with the Financial Supervisory Commission, R.O.C. (Taiwan) under FSC Letter No. 1150348929 dated July 17, 2026. The base price for conversion is set using the average closing price over the five business days before July 30, 2026, at NT$121.7 per share, with a conversion premium rate of 119.97%, resulting in a conversion price of NT$146.0 per share.
Second, subsidiary Fortune Venture Capital Corporation disposed of common shares of Centera Photonics Inc. between July 29 and July 30, 2026. The sale covered 870,000 shares at an average unit price of NTD 375.45, for total proceeds of NTD 326,642,500 and a reported gain of NTD 248,883,331. After this transaction, cumulative holdings in Centera Photonics amount to 933,662 shares, valued at NTD 83,449,174, representing 1.40% of the company’s shares, with no restrictions on rights. The ratio of securities investment (including this trade) is 2.42% of total assets and 3.03% of shareholders’ equity, and operational capital stands at NTD 44,980,640,000. The stated purpose of the disposal is financing operations.
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Key Figures
Key Terms
domestic unsecured convertible corporate bond financial
Financial Supervisory Commission, R.O.C. (Taiwan) regulatory
Regulations Governing the Acquisition and Disposal of Assets by Public Companies regulatory
operational capital financial
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FAQ
What conversion price did UMC (UMC) set for its 1st domestic unsecured convertible corporate bond?
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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
July 30, 2026
(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: July 30, 2026
2
EXHIBIT INDEX
Exhibit |
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Description |
99 |
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6K on 07/30/2026 |
3
www.umc.com
Exhibit
Exhibit Description
99.1 Announcement on 2026/07/30: Announcement of the conversion price and premium rate for the 1st domestic unsecured convertible corporate bond
99.2 Announcement on 2026/07/30: Represent subsidiary Fortune Venture Capital Corporation to announce related materials on disposal of common shares of Centera Photonics Inc.
Exhibit 99.1
Announcement of the conversion price and premium rate for the 1st domestic unsecured convertible corporate bond
1. Date of occurrence of the event: 2026/07/30
2. Company name: UNITED MICROELECTRONICS CORPORATION
3. Relationship to the Company (please enter “head office” or “subsidiaries”): head office
4. Reciprocal shareholding ratios: Not applicable
5. Cause of occurrence:
Announcement in accordance with “Rules Governing the Issuance and Conversion of the 1st Domestic Unsecured Convertible Corporate Bond.”
6. Countermeasures: None
7. Any other matters that need to be specified (the information disclosure also meets the requirements of Article 7, subparagraph 9 of the Securities and Exchange Act Enforcement Rules, which brings forth a significant impact on shareholders rights or the price of the securities on public companies.):
(1) The issuance of the 1st domestic unsecured convertible corporate bond has become effective upon filing with the Financial Supervisory Commission, R.O.C. (Taiwan) (“FSC”), pursuant to FSC Letter No. 1150348929 dated July 17, 2026.
(2) The base price is determined based on the average closing price of the common shares over the five business days prior to the conversion price determination reference date of July 30, 2026, which is NT$121.7 per share; the conversion premium rate is 119.97%.
(3) Based on the above method, the conversion price is set at NT$146.0 per share.
Exhibit 99.2
Represent subsidiary Fortune Venture Capital Corporation to announce related materials on disposal of common shares of Centera Photonics Inc.
1. Name of the securities: common shares of Centera Photonics Inc.
2. Trading date: 2026/07/29~2026/07/30
3. Date of the board of directors’ resolution: NA
4. Other approval date:
Approval level: NA;
2026/07/30
5. Amount, unit price, and total monetary amount of the transaction:
Trading Volume:870,000 shares;
unit price: NTD 375.45;
total monetary amount: NTD 326,642,500
6. Gain (or loss) through disposal (not applicable in case of acquisition of securities): NTD 248,883,331
7. Relationship with the underlying company of the trade: none
8. Current cumulative amount held, monetary amount, and shareholding percentage of cumulative holdings of the securities being traded (including the current trade), and status of any restriction of rights (e.g. pledges):
cumulative volume: 933,662 shares;
amount: NTD 83,449,174;
percentage of holdings: 1.40%;
status of any restriction of rights: none
9. Current ratio of securities investment (including the current trade, as listed in article 3 of Regulations Governing the Acquisition and Disposal of Assets by Public Companies) to the total assets and equity attributable to owners of the parent as shown in the most recent financial statement and working capital as shown in the most recent financial statement as of the present:
ratio of total assets: 2.42%;
ratio of shareholder's equity: 3.03%;
the operational capital as shown in the most recent financial statement: NTD 44,980,640,000
10. Concrete purpose of the acquisition or disposal: financing operation
11. Any dissenting opinions of directors to the present transaction: NA
12. Whether the counterparty of the current transaction is a related party: no
13. Trading counterparty and its relationship with the Company: NA
14. Date of ratification by supervisors or approval by the audit committee: NA
15. Date on which material information regarding the same event has been previously released: NA
16. Any other matters that need to be specified: none