UMC (NYSE: UMC) May 2026 sales rise 17.78% with YTD up 9.05%
Rhea-AI Filing Summary
United Microelectronics Corporation reported higher sales for May 2026 and updated its derivatives positions. May net sales were NT$22,943,755 thousand, up 17.78% from NT$19,480,057 thousand in May 2025. Year-to-date net sales reached NT$106,645,602 thousand, compared with NT$97,793,544 thousand a year earlier, an increase of 9.05%.
The company reported no funds lent to other parties and no endorsements or guarantees for May 2026. It listed financial derivative transactions not under hedging accounting, mainly forward contracts with an unwritten-off notional amount of NT$2,159,010 thousand, a fair value of NT$12,966 thousand, and a net profit from fair value of NT$13,619 thousand, plus a realized loss of NT$743 thousand on written-off forward contracts.
Positive
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Negative
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Insights
UMC shows solid May sales growth with limited derivatives impact.
United Microelectronics Corporation reported May 2026 net sales of NT$22,943,755 thousand, a 17.78% increase over May 2025. Year-to-date net sales reached NT$106,645,602 thousand, up 9.05%, indicating steady demand through May 2026.
The company reported no funds lent to other parties and no endorsements or guarantees, which reduces balance-sheet complexity in this excerpt. Derivative activity centers on forward contracts with unwritten-off notional of NT$2,159,010 thousand and a modest fair value gain of NT$12,966 thousand, plus a small realized loss of NT$743 thousand.
Overall, this update highlights revenue growth with relatively contained derivatives impacts. Subsequent periodic disclosures may provide broader context on margins, capacity utilization, and how monthly sales trends translate into quarterly and full-year performance.
Key Figures
Key Terms
endorsements and guarantees financial
financial derivative transactions financial
hedging accounting financial
unwritten-off trading contracts financial
fair value financial
realized profit (loss) financial
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
June 5, 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: June 5, 2026
2
EXHIBIT INDEX
Exhibit |
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Description |
99.1 |
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6K on 06/05/2026 |
3
www.umc.com
Exhibit
Exhibit Description
99.1 Announcement on 2026/06/05: May Revenue
Exhibit 99.1
United Microelectronics Corporation
June 5, 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 May 2026.
Period |
Items |
2026 |
2025 |
Changes |
% |
May |
Net sales |
22,943,755 |
19,480,057 |
3,463,698 |
17.78% |
Year-to-Date |
Net sales |
106,645,602 |
97,793,544 |
8,852,058 |
9.05% |
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 |
2,159,010 |
0 |
Fair Value |
0 |
0 |
12,966 |
0 |
Net profit (loss) from Fair Value |
0 |
0 |
13,619 |
0 |
Written-off Trading |
|
|
|
|
Contracts |
0 |
0 |
3,670,260 |
0 |
Realized profit (loss) |
0 |
0 |
(743) |
0 |