UMC posts Q4 2025 results and 2026 outlook
United Microelectronics Corporation reported solid fourth quarter 2025 results, with consolidated revenue of NT$61.81 billion (US$1.97 billion), up 4.5% from 3Q25 and 2.4% year-on-year.
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Rhea-AI Filing Summary
United Microelectronics Corporation reported solid fourth quarter 2025 results, with consolidated revenue of NT$61.81 billion (US$1.97 billion), up 4.5% from 3Q25 and 2.4% year-on-year. Gross margin was 30.7% and operating margin was 19.8%, reflecting healthy profitability.
Net income attributable to shareholders was NT$10.06 billion (US$320 million), with earnings per share of NT$0.81 and earnings per ADS of US$0.129. For 2025, earnings per share reached NT$3.34. Revenue from 22/28nm technology accounted for 36% of Q4 revenue, while 22nm revenue alone rose 31% quarter-on-quarter and hit a record high, exceeding 13% of total quarterly revenue.
Wafer shipments for 2025 increased 12.3% and revenue in US dollars grew 5.3% year-on-year. Management expects wafer demand to remain firm and views 2026 as another growth year, supported by expanding 22nm platforms, new technology solutions, capacity investments in Singapore, U.S. partnerships, and a 2026 CAPEX plan of US$1.5 billion. First-quarter 2026 guidance calls for flat wafer shipments, firm U.S. dollar ASP, gross margin in the high-20% range, and capacity utilization in the mid-70% range.
Insights
UMC posts steady Q4 growth, strong 22nm ramp, and measured 2026 outlook.
UMC delivered Q4 2025 revenue of NT$61.81 billion, up 4.5% sequentially and 2.4% year-on-year, with a 30.7% gross margin. Net income attributable to shareholders reached NT$10.06 billion, translating to EPS of NT$0.81, while full-year 2025 EPS was NT$3.34.
Mix improvement is notable: 22/28nm contributed 36% of Q4 revenue, and within that, 22nm revenue grew 31% quarter-on-quarter to a record level, above 13% of total revenue. Full-year shipments rose 12.3% and revenue in U.S. dollars increased 5.3%, indicating volume-driven growth despite mild demand in many markets.
For Q1 2026, management guides for flat wafer shipments, firm ASP in U.S. dollars, gross margin in the high-20% range, and mid-70% capacity utilization, suggesting some margin moderation versus Q4. The US$1.5 billion 2026 CAPEX underpins ongoing expansion in technologies such as 22nm, advanced packaging, and silicon photonics, with actual impact depending on execution and customer adoption over 2026 and beyond.
FAQ
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How did UMC (UMC) perform financially in Q4 2025?
How important was 22nm and 28nm technology to UMC (UMC) in Q4 2025?
What guidance did UMC (UMC) give for Q1 2026 operations?
What is UMC’s (UMC) planned capital expenditure for 2026?
How is UMC (UMC) addressing sustainability and waste reduction?
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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
January 28, 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: January 28, 2026
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EXHIBIT INDEX
Exhibit |
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Description |
99.1 |
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6K on 01/28/2026 |
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www.umc.com
Exhibit
Exhibit Description
99.1 Announcement on 2026/01/28: UMC announced its operating results for the fourth quarter of 2025
Exhibit 99.1
UMC announced its operating results for the fourth quarter of 2025
1. Date of occurrence of the event: 2026/01/28
2. Company name: UNITED MICROELECTRONICS CORPORATION
3. Relationship to the Company (please enter “head office” or “subsidiaries”): head office
4. Reciprocal shareholding ratios: N/A
5. Cause of occurrence:
UMC Reports Fourth Quarter 2025 Results
Full-year 22nm revenue increases 93% YoY, reaching record high in Q4 2025
2025 earnings per share of NT$3.34
Fourth Quarter 2025 Overview:
‧Revenue: NT$61.81 billion (US$1.97 billion)
‧Gross margin: 30.7%; Operating margin: 19.8%
‧Revenue from 22/28nm: 36%
‧Capacity utilization rate: 78%
‧Net income attributable to shareholders of the parent: NT$10.06 billion (US$320 million)
‧Earnings per share: NT$0.81; earnings per ADS: US$0.129
Taipei, Taiwan, ROC – January 28, 2026 – United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC” or “The Company”), a leading global semiconductor foundry, today announced its consolidated operating results for the fourth quarter of 2025.
Fourth quarter consolidated revenue was NT$61.81 billion, increasing 4.5% from NT$59.13 billion in 3Q25. Compared to a year ago, 4Q25 revenue increased 2.4%. Consolidated gross margin for 4Q25 was 30.7%. Net income attributable to the shareholders of the parent was NT$10.06 billion, with earnings per ordinary share of NT$0.81.
Jason Wang, co-president of UMC, said, “In the fourth quarter, our results were in line with guidance, with flattish wafer shipments amid mild demand across most markets. The 4.5% revenue increase during the quarter was supported by favorable foreign exchange movement as well as sequential growth in our 22/28nm business, which continues to improve our product mix. Within the 22/28nm segment, 22nm revenue increased 31% quarter-on-quarter to a record high, accounting for more than 13% of total fourth-quarter revenue. Looking at the full year, UMC delivered solid performance in 2025, with shipments increasing 12.3% and revenue in US dollars up 5.3% year-on-year.”
“Going into the first quarter of 2026, we expect wafer demand to remain firm. UMC is confident that 2026 will be another growth year as tape-outs on our 22nm platforms accelerate and other new solutions continue to gain business traction.”
Co-president Wang added, “We have been working hard to lay the foundation for our next phase of growth, investing for the future in both capacity and technology. In 2025, we completed the new Phase 3 facility at our Singapore Fab 12i, which is already playing a central role in supporting customers to diversify supply chains. At the same time, we are striving to expand our footprint in the U.S. through innovative yet cost-effective modes of partnerships, such as our 12nm collaboration with Intel and the
recently announced MOU with Polar Semiconductor. The leadership UMC has built over the past few years across specialty technologies – including embedded High Voltage, Non-Volatile Memory, and BCD - has and will continue to sustain stable business growth. Looking ahead to 2026 and beyond, we expect advanced packaging and silicon photonics to serve as new growth catalysts, positioning UMC to address the evolving needs of high-performance applications across AI, networking, consumer, automotive and more.”
Co-president Wang said, “During 2025, UMC also reached important milestones in our sustainability journey. Just last month, we officially inaugurated our Circular Economy and Recycling Innovation Center, an on-site waste recycling facility expected to reduce UMC’s total waste generated by Taiwan fabs by up to one-third. This is an important initiative in our goal to enhance resource recovery and develop circular economy solutions in our industry. In addition, UMC continues to be recognized as a leader in international corporate sustainability benchmarks, including the CDP and MSCI ESG Ratings.”
First Quarter 2026 Outlook & Guidance
‧Wafer Shipments: Will remain flat
‧ASP in USD: Will remain firm
‧Gross Profit Margin: Will be approximately in the high-20% range
‧Capacity Utilization: mid-70% range
‧2026 CAPEX: US$1.5 billion
6. Countermeasures: N/A
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.): N/A