UMC buys NT$1.17B in software and intellectual property
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Rhea-AI Filing Summary
United Microelectronics Corp. (UMC) acquired software and intellectual property for NT$1,171,169,241 from Synopsys International Limited, Taiwan Branch, which UMC identified as a non-related party. The acquisition event dates run from May 5 through November 10, 2026; UMC said the assets are for production and research and development, with funding from working capital. The purchase price was set through price negotiation using market price as the reference, and payment follows the purchase order payment term.
UMC completed registration of a capital reduction due to cancellation of the RSA on November 10, 2026. Paid-in capital was NT$125,700,938,990 before and NT$125,695,204,800 after; shares outstanding were 12,539,542,899 before and 12,538,969,480 after. Book value per share was NT$37.55 before and NT$37.56 after. UMC also announced attendance at investor conferences at W Hotel Taipei on November 16 and Mandarin Oriental, Singapore on November 18, 2026.
Key Figures
Key Terms
capital reduction financial
paid-in capital financial
working capital financial
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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
November 12, 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: November 12, 2026
2
EXHIBIT INDEX
Exhibit |
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Description |
99 |
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6K on 11/12/2026 |
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www.umc.com
Exhibit
Exhibit Description
99.1 Announcement on 2026/11/10: UMC will attend investor conferences on 2026/11/16
99.2 Announcement on 2026/11/10: UMC will attend investor conferences on 2026/11/18
99.3 Announcement on 2026/11/10: To announce related materials on acquisition of intangible assets
99.4 Announcement on 2026/11/11: To announce the registration of capital reduction due to cancellation of the RSA
99.5 Announcement on 2026/11/10: the trading and pledge of UMC common shares by directors, executive officers and 10% shareholders of UMC
Exhibit 99.1
UMC will attend investor conferences on 2026/11/16
1. Date of institutional investor conference: 2026/11/16
2. Time of institutional investor conference: 09:00 AM
3. Location of institutional investor conference: W Hotel Taipei
4. Outline of institutional investor conference:
The Company will attend the “Taiwan Conference 2026”, held by Macquarie.
5. Any other matters that need to be specified: None
Exhibit 99.2
UMC will attend investor conferences on 2026/11/18
1. Date of institutional investor conference: 2026/11/18
2. Time of institutional investor conference: 10:30 AM
3. Location of institutional investor conference: Mandarin Oriental, Singapore
4. Outline of institutional investor conference:
The Company will attend the “Asia Pacific Summit”, held by Morgan Stanley.
5. Any other matters that need to be specified: None
Exhibit 99.3
To announce related materials on acquisition of intangible assets
1. Name and nature of the underlying assets (if preferred shares, the terms and conditions of issuance shall also be indicated, e.g., dividend yield, etc.): Software and intellectual property
2. Date of occurrence of the event: 2026/05/05~2026/11/10
3. Date of the board of directors’ resolution: NA
4. Other approval date:
Approval level: NA; 2026/11/10
5. Amount, unit price, and total monetary amount of the transaction:
Transaction volume: one batch;
average unit price: NT$1,171,169,241;
total transaction price: NT$1,171,169,241.
6. Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and furthermore is not a related party of the Company, the name of the trading counterparty is not required to be disclosed):
SYNOPSYS INTERNATIONAL LIMITED, TAIWAN BRANCH; non-related party transaction
7. Where the trading counterparty is a related party, announcement shall also be made of the reason for choosing the related party as trading counterparty and the identity of the previous owner, its relationship with the Company and the trading counterparty, and the previous date and monetary amount of transfer: NA
8. Where an owner of the underlying assets within the past five years has been a related party of the Company, the announcement shall also include the date and price of acquisition and disposal by the related party, and its relationship with the Company at the time of the transaction: NA
9. Matters related to the current disposal of creditors' rights (including types of collaterals of the disposed creditor’s rights; if creditor’s rights over a related party, announcement shall be made of the name of the related party and the book amount of the creditor’s rights, currently being disposed of, over such related party): NA
10. Profit or loss from the disposal (not applicable in cases of acquisition of securities) (those with deferral should provide a table explaining recognition): NA
11. Terms of delivery or payment (including payment period and monetary amount), restrictive covenants in the contract, and other important terms and conditions: Base on purchase order payment term.
12. The manner of deciding on this transaction (such as invitation to tender, price comparison, or price negotiation), the reference basis for the decision on price, and the decision-making unit:
transaction: price negotiation;
the reference basis for the decision on price: market price;
the decision-making department: the Selection Meeting
13. Net worth per share of the Company’s underlying securities acquired or disposed of: NA
14. Cumulative no. of shares held (including the current transaction), their monetary amount, shareholding percentage, and status of any restriction of rights (e.g., pledges), as of the present moment: NA
15. 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: NA
16. Broker and broker’s fee: None
17. Concrete purpose or use of the acquisition or disposal: For Production and R&D
18. Any dissenting opinions of directors to the present transaction: NA
19. Whether the counterparty of the current transaction is a related party: No
20. Date of ratification by supervisors or approval by the Audit Committee: NA
21. Whether the CPA issued an unreasonable opinion regarding the current transaction: NA
22. Name of the CPA firm: Kau Wei CPAs Firm
23. Name of the CPA: Tsai wen ching
24. Practice certificate number of the CPA:
Certificate No. 1494 of Tai-Tsai-Cheng (No.6) issued by Ministry of Finance, Taiwan
25. Whether the transaction involved in change of business model: No
26. Details on change of business model: NA
27. Details on transactions with the counterparty for the past year and the expected coming year: Depending on the Company’s operation requirements
28. Source of funds: Working capital
29. Date on which material information regarding the same event has been previously released: NA
30. Any other matters that need to be specified: None
Exhibit 99.4
To announce the registration of capital reduction due to cancellation of the RSA
1. Date of the competent authority’s approval of capital reduction: 2026/11/10
2. Date of completion of capitalization change registration: 2026/11/10
3. Effect on the financial statements (including any discrepancy between the amount of paid-in capital and the no. of shares outstanding, and the effect on net worth per share):
(1) Before the capital reduction: The paid-in capital is NT$125,700,938,990; the shares outstanding are 12,539,542,899 shares; book value per share is NT$37.55
(2) After the capital reduction: The paid-in capital is NT$125,695,204,800; the shares outstanding are 12,538,969,480 shares; book value per share is NT$37.56
(Note: Net worth per share was calculated based on the consolidated financial statements for the third quarter of 2026 reviewed by CPA.)
4. Plan for expected share replacement operations: NA
5. Estimated no. of listed common shares after capital reduction and new issue: NA
6. Estimated no. of listed common shares as a percentage of issued common shares after capital reduction and new issue (No. of common shares after capital reduction/No. of issued common shares): NA
7. Countermeasures for poor circulation of equity if the aforesaid estimated no. of listed common shares does not reach 60 million shares and the percentage does not reach 25% after capital reduction: NA
8. Any other matters that need to be specified: None
Exhibit 99.5
United Microelectronics Corporation
For the month of October, 2026
This is to report 1) the trading of directors, executive officers and 10% shareholders of United Microelectronics Corporation (“UMC”) (NYSE: UMC); 2) the pledge and clear of pledge of UMC common shares by directors, executive officers and 10% shareholders of UMC;
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