Full-year 22nm revenue increases 93% YoY, reaching record high in Q4 2025

2025 earnings per share of NT$3.34

Fourth Quarter 2025 Overview¹:

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

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."

Summary of Operating Results

Operating Results
(Amount: NT$ million)	4Q25		3Q25		QoQ % change		4Q24		YoY % change
Operating Revenues	61,810		59,127		4.5		60,386		2.4
Gross Profit	18,958		17,623		7.6		18,343		3.4
Operating Expenses	(7,384	)	(6,973	)	5.9		(6,748	)	9.4
Net Other Operating Income and Expenses	651		467		39.3		362		79.8
Operating Income	12,225		11,118		10.0		11,957		2.2
Net Non-Operating Income and Expenses	3,278		3,526		(7.0	)	(1,443	)	-
Net Income Attributable to Shareholders of the Parent	10,055		14,982		(32.9	)	8,497		18.3
EPS (NT$ per share)	0.81		1.20				0.68
EPS (US$ per ADS)	0.129		0.197				0.104
Exchange rate (USD/NTD)	31.40		30.47				32.78
Note: Sums may not equal totals due to rounding.

Fourth quarter operating revenues grew 4.5% sequentially to NT$61.81 billion. Revenue contribution from 40nm and below technologies represented 53% of wafer revenue. Gross profit increased 7.6% QoQ to NT$18.96 billion, or 30.7% of revenue. Operating expenses increased 5.9% to NT$7.38 billion. Net other operating income increased 39.3% to NT$0.65 billion. Net non-operating income totaled NT$3.28 billion. Net income attributable to shareholders of the parent amounted to NT$10.06 billion.

Earnings per ordinary share for the quarter was NT$0.81. Earnings per ADS was US$0.129. The basic weighted average number of shares outstanding in 4Q25 was 12,487,002,150, compared with 12,485,162,809 shares in 3Q25 and 12,481,192,676 shares in 4Q24. The diluted weighted average number of shares outstanding was 12,594,788,681 in 4Q25, compared with 12,556,345,829 shares in 3Q25 and 12,610,756,874 shares in 4Q24. The fully diluted shares counted on December 31, 2025 were approximately 12,598,993,000.

Detailed Financials Section

Operating revenues increased to NT$61.81 billion. COGS increased 3.2% QoQ to NT$42.85 billion. Gross profit increased 7.6% to NT$18.96 billion. Operating expenses grew 5.9% QoQ to NT$7.38 billion, as G&A increased 8.1% to NT$1.85 billion and R&D increased 6.6% to NT$4.94 billion, while Sales & Marketing decreased 5.3% to NT$0.60 billion. Net other operating income was NT$0.65 billion. In 4Q25, operating income increased 10.0% QoQ to NT$12.23 billion.

COGS & Expenses
(Amount: NT$ million)	4Q25		3Q25		QoQ % change		4Q24		YoY % change
Operating Revenues	61,810		59,127		4.5		60,386		2.4
COGS	(42,851	)	(41,504	)	3.2		(42,043	)	1.9
Depreciation	(12,991	)	(12,635	)	2.8		(11,841	)	9.7
Other Mfg. Costs	(29,860	)	(28,869	)	3.4		(30,202	)	(1.1	)
Gross Profit	18,958		17,623		7.6		18,343		3.4
Gross Margin (%)	30.7	%	29.8	%			30.4	%
Operating Expenses	(7,384	)	(6,973	)	5.9		(6,748	)	9.4
Sales & Marketing	(595	)	(628	)	(5.3	)	(623	)	(4.6	)
G&A	(1,853	)	(1,715	)	8.1		(1,791	)	3.5
R&D	(4,937	)	(4,631	)	6.6		(4,334	)	13.9
Expected Credit Impairment Gain	0		0		0.0		0		(99.5	)
Net Other Operating Income & Expenses	651		467		39.3		362		79.8
Operating Income	12,225		11,118		10.0		11,957		2.2
Note: Sums may not equal totals due to rounding.

Net non-operating income in 4Q25 was NT$3.28 billion, primarily reflecting the NT$2.81 billion in net investment gain and the NT$0.33 billion in exchange gain.

Non-Operating Income and Expenses
(Amount: NT$ million)	4Q25	3Q25		4Q24
Non-Operating Income and Expenses	3,278	3,526		(1,443	)
Net Interest Income and Expenses	134	88		290
Net Investment Gain and Loss	2,812	3,192		(2,614	)
Exchange Gain and Loss	332	250		877
Other Gain and Loss	0	(3	)	4
Note: Sums may not equal totals due to rounding.

In 4Q25, cash inflow from operating activities was NT$33.00 billion. Cash outflow from investing activities totaled NT$17.06 billion, including NT$15.62 billion in capital expenditures, resulting in free cash flow of NT$17.38 billion. Cash outflow from financing activities was NT$11.42 billion, primarily due to NT$20.89 billion in bank loans, partially offset by NT$9.80 billion in bonds issued. Net cash inflow in 4Q25 amounted to NT$6.44 billion. Over the next 12 months, the company expects to repay NT$12.48 billion in bank loans.

Cash Flow Summary
(Amount: NT$ million)	For the 3-Month Period Ended Dec. 31, 2025		For the 3-Month Period Ended Sep. 30, 2025
Cash Flow from Operating Activities	33,003		20,938
Net income before tax	15,503		14,644
Depreciation & Amortization	15,630		14,995
Share of profit of associates and joint ventures	(929	)	(1,250	)
Income tax paid	(301	)	(3,341	)
Changes in working capital & others	3,100		(4,110	)
Cash Flow from Investing Activities	(17,059	)	(16,152	)
Increase in financial assets measured at amortized cost	(3,074	)	(4,043	)
Acquisition of PP&E	(14,826	)	(11,223	)
Acquisition of intangible assets	(667	)	(948	)
Others	1,508		62
Cash Flow from Financing Activities	(11,416	)	(15,160	)
Bank loans	(20,885	)	15,874
Bonds issued	9,800		5,000
Cash dividends	-		(35,788	)
Others	(331	)	(246	)
Effect of Exchange Rate	1,915		2,597
Net Cash Flow	6,443		(7,777	)
Beginning balance	104,217		111,994
Ending balance	110,660		104,217
Note: Sums may not equal totals due to rounding.

Cash and cash equivalents increased to NT$110.66 billion. Days sales outstanding decreased 3 days to 47 days, while days of inventory increased 1 day to 77 days.

Current Assets
(Amount: NT$ billion)	4Q25	3Q25	4Q24
Cash and Cash Equivalents	110.66	104.22	105.00
Accounts Receivable	31.27	32.25	33.34
Days Sales Outstanding	47	50	51
Inventories, net	37.23	35.18	35.78
Days of Inventory	77	76	80
Total Current Assets	204.78	192.85	189.68

Current liabilities increased to NT$88.90 billion. Long-term credit / bonds decreased to NT$45.37 billion. Total liabilities increased to NT$199.14 billion, while debt to equity ratio decreased to 52%.

Liabilities
(Amount: NT$ billion)	4Q25		3Q25		4Q24
Total Current Liabilities	88.90		82.28		75.26
Accounts Payable	9.17		8.04		7.63
Short-Term Credit / Bonds	27.60		30.15		19.51
Payables on Equipment	11.68		11.57		10.52
Other	40.45		32.52		37.60
Long-Term Credit / Bonds	45.37		53.76		55.53
Total Liabilities	199.14		194.20		192.02
Debt to Equity	52	%	54	%	51	%

Analysis of Revenue²

Revenue from Asia Pacific increased to 64%, while business from North America decreased to 21% of sales. Business from Europe increased to 11%, while contribution from Japan was 4%.

Revenue Breakdown by Region
Region	4Q25		3Q25		2Q25		1Q25		4Q24
North America	21	%	25	%	20	%	22	%	25	%
Asia Pacific	64	%	63	%	67	%	66	%	61	%
Europe	11	%	8	%	8	%	7	%	11	%
Japan	4	%	4	%	5	%	5	%	3	%

Revenue contribution from 22/28nm was increased to 36% of wafer revenue, while 40nm contribution remained at 17% of sales.

Revenue Breakdown by Geometry
Geometry	4Q25		3Q25		2Q25		1Q25		4Q24
14nm and below	0	%	0	%	0	%	0	%	0	%
14nm<x<=28nm	36	%	35	%	40	%	37	%	34	%
28nm<x<=40nm	17	%	17	%	15	%	16	%	16	%
40nm<x<=65nm	17	%	18	%	17	%	16	%	16	%
65nm<x<=90nm	8	%	8	%	7	%	8	%	11	%
90nm<x<=0.13um	7	%	8	%	7	%	7	%	10	%
0.13um<x<=0.18um	10	%	9	%	9	%	10	%	9	%
0.18um<x<=0.35um	4	%	4	%	4	%	5	%	4	%
0.5um and above	1	%	1	%	1	%	1	%	0	%

Revenue from fabless customers accounted for 80% of revenue.

Revenue Breakdown by Customer Type
Customer Type	4Q25		3Q25		2Q25		1Q25		4Q24
Fabless	80	%	81	%	81	%	82	%	84	%
IDM	20	%	19	%	19	%	18	%	16	%

Revenue from the communication segment accounted for 42%, while business from computer applications was 12% of sales. Business from consumer applications accounted for 28%, while other segments was 18% of revenue.

Revenue Breakdown by Application ⁽¹⁾
Application	4Q25		3Q25		2Q25		1Q25		4Q24
Computer	12	%	12	%	11	%	11	%	13	%
Communication	42	%	42	%	41	%	40	%	39	%
Consumer	28	%	29	%	33	%	34	%	29	%
Others	18	%	17	%	15	%	15	%	19	%

(1) Computer consists of ICs such as CPU, GPU, HDD controllers, DVD/CD-RW control ICs, PC chipset, audio codec, keyboard controller, monitor scaler, USB, I/O chipset, WLAN. Communication consists of handset components, broadband, bluetooth, Ethernet, LAN, DSP, etc. Consumer consists of ICs used for DVD players, DTV, STB, MP3/MP4, flash controller, game consoles, DSC, smart cards, toys, etc.

Blended ASP Trend

(To view blended ASP trend, please click here for 4Q25 ASP)

Shipment and Utilization Rate³

Wafer shipments decreased 0.6% QoQ to 994K during the fourth quarter, while quarterly capacity was 1,305K. Overall utilization rate in 4Q25 was 78%.

Wafer Shipments
	4Q25	3Q25	2Q25	1Q25	4Q24
Wafer Shipments (12" K equivalents)	994	1,000	967	910	909

Quarterly Capacity Utilization Rate
	4Q25	3Q25	2Q25	1Q25	4Q24
Utilization Rate	78%	78%	76%	69%	70%
Total Capacity (12" K equivalents)	1,305	1,305	1,290	1,264	1,280

Capacity⁴

Total capacity in the fourth quarter was 1,305K 12-inch equivalent wafers. Capacity will decrease to 1,283K 12-inch equivalent wafers in the first quarter of 2026, reflecting the annual production maintenance across 8-inch and 12-inch facilities.

Annual Capacity in *thousands of wafers*											Quarterly Capacity in *thousands of wafers*
FAB		Geometry (um)	2025		2024		2023		2022		FAB		1Q26E	4Q25	3Q25	2Q25
WTK	6"	5 – 0.15	317		331		328		335		WTK	6"	78	80	80	80
8A	8"	3 – 0.11	857		829		811		765		8A	8"	212	215	215	215
8C	8"	0.35 – 0.11	500		477		473		459		8C	8"	123	125	125	125
8D	8"	0.18 – 0.11	471		473		440		410		8D	8"	116	118	118	118
8E	8"	0.6 – 0.11	522		524		490		469		8E	8"	129	131	131	131
8F	8"	0.18 – 0.11	583		578		570		550		8F	8"	144	146	146	146
8S	8"	0.18 – 0.11	466		455		447		443		8S	8"	115	117	117	117
8N	8"	0.5 – 0.11	996		1,013		996		952		8N	8"	246	250	250	250
12A	12"	0.13 – 0.014	1,629		1,556		1,305		1,170		12A	12"	402	409	409	409
12i	12"	0.13 – 0.040	684		678		655		655		12i	12"	169	172	172	172
12X	12"	0.080 – 0.022	347		318		317		314		12X	12"	93	95	95	80
12M	12"	0.13 – 0.040	471		455		438		436		12M	12"	117	119	119	119
Total⁽¹⁾			5,163		5,022		4,674		4,458		Total		1,283	1,305	1,305	1,290
YoY Growth Rate			3	%	7	%	5	%	6	%

⁽¹⁾One 6-inch wafer is converted into 0.25 (6²/12²) 12-inch equivalent wafer; one 8-inch wafer is converted into 0.44 (8²/12²) 12-inch equivalent wafers. Total capacity figures are expressed in 12-inch equivalent wafers.

CAPEX

CAPEX spending in 4Q25 totaled US$501 million as 2025 CAPEX amounted to US$1.6 billion. 2026 cash-based CAPEX budget will be US$1.5 billion.

Capital Expenditure by Year - in US$ billion
Year	2025	2024	2023	2022	2021
CAPEX	$ 1.6	$ 2.9	$ 3.0	$ 2.7	$ 1.8

2026 CAPEX Plan
8"	12"	Total
10%	90%	US$1.5 billion

Brief Summary of Full Year 2025 Consolidated Results

Consolidated revenue in NTD increased 2.3% YoY to NT$237.55 billion, from NT$232.30 billion in 2024.
Gross profit decreased 8.9%, compared to a year ago, representing 29.0% of 2025 revenue.
Operating income decreased 14.8% year-on-year, accounting for 18.5% of 2025 revenue.
Net income attributable to shareholders of the parent decreased 11.6% to NT$41.72 billion in 2025.
EPS was NT$3.34, or EPADS of US$0.532 for 2025.
22/28nm revenue contribution accounted for 37% in 2025.

Operating Results
(Amount: NT$ million)	2025		2024		YoY % change
Operating Revenues	237,553		232,303		2.3
Gross Profit	68,906		75,654		(8.9	)
Operating Expenses	(26,948	)	(25,365	)	6.2
Net Other Operating Income and Expenses	1,990		1,324		50.3
Operating Income	43,949		51,613		(14.8	)
Net Non-Operating Income and Expenses	5,699		4,607		23.7
Income Tax Expense	(8,113	)	(9,114	)	(11.0	)
Net Income Attributable to Shareholders of the Parent	41,716		47,211		(11.6	)
EPS (NT$ per share)	3.34		3.80
EPS (US$ per ADS)	0.532		0.580
Exchange rate (USD/NTD)	31.40		32.78

Annual Sales Breakdown in Revenue for Foundry Segment

Region	2025		2024
North America	22	%	25	%
Asia Pacific	65	%	63	%
Europe	9	%	8	%
Japan	4	%	4	%

Technology	2025		2024
14nm and below	0	%	0	%
14nm<x<=28nm	37	%	34	%
28nm<x<=40nm	16	%	14	%
40nm<x<=65nm	17	%	16	%
65nm<x<=90nm	8	%	11	%
90nm<x<=0.13um	7	%	10	%
0.13um<x<=0.18um	10	%	10	%
0.18um<x<=0.35um	4	%	4	%
0.5um and above	1	%	1	%

Customer Type	2025		2024
Fabless	81	%	84	%
IDM	19	%	16	%

Application	2025		2024
Computer	12	%	14	%
Communication	41	%	42	%
Consumer	31	%	28	%
Others	16	%	16	%

First Quarter 2026 Outlook & Guidance

Quarter-over-Quarter 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

Recent Developments / Announcements

Nov. 13, 2025		Metalenz and UMC Bring Breakthrough Face Authentication Solution Polar ID to Mass Production
Dec. 03, 2025		UMC Honors 16 Suppliers for Outstanding Carbon Reduction Achievements
Dec. 04, 2025		UMC and Polar Collaborate to Meet Growing Demand for U.S. Onshore Semiconductor Manufacturing
Dec. 08, 2025		UMC Licenses imec's iSiPP300 Technology to Extend Silicon Photonics Capabilities for Next-Generation Connectivity
Dec. 10, 2025		UMC Inaugurates the Circular Economy & Recycling Innovation Center
Dec. 15, 2025		UMC Awarded Top Climate and Water Ratings by CDP for 4th Consecutive Year
Jan. 14, 2026		UMC Awarded AA Score in MSCI ESG Ratings for the Third Consecutive Year
Jan. 16, 2026		SST and UMC Announce Immediate Availability of 28nm SuperFlash® Gen 4 Automotive Grade 1 Platform

Please visit UMC's website for further details regarding the above announcements

Conference Call / Webcast Announcement

Wednesday, January 28, 2026

Time: 5:00 PM (Taipei) / 4:00 AM (New York) / 09:00 AM (London)

Dial-in numbers and Access Codes:
Taiwan Number:		02 3396 1191
Taiwan Toll Free:		0080 119 6666
US Toll Free:		+1 866 212 5567
Other Areas:		+886 2 3396 1191

Access Code:		1513528#

A live webcast and replay of the 4Q25 results announcement will be available at www.umc.com under the "Investors / Events" section.

About UMC

UMC (NYSE:UMC, TWSE: 2303)) is a leading global semiconductor foundry company. The company provides high-quality IC fabrication services, focusing on logic and various specialty technologies to serve all major sectors of the electronics industry. UMC's comprehensive IC processing technologies and manufacturing solutions include Logic/Mixed-Signal, embedded High-Voltage, embedded Non-Volatile-Memory, RFSOI, BCD etc. Most of UMC's 12-in and 8-in fabs with its core R&D are in Taiwan, with additional ones throughout Asia. UMC has a total of 12 fabs in production with a combined capacity of more than 400,000 wafers per month (12-in equivalent), and all of them are certified with IATF 16949 automotive quality standards. UMC is headquartered in Hsinchu, Taiwan, plus local offices in the United States, Europe, China, Japan, Korea, and Singapore, with a worldwide total of 20,000 employees. For more information, please visit: http://www.umc.com.

Safe Harbor Statements

This press release contains forward-looking statements within the meaning of Section 27A of the United States Securities Act of 1933, as amended, and Section 21E of the United States Securities Exchange Act of 1934, as amended, and as defined in the United States Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding anticipated financial results for the fourth quarter of 2025; the expected wafer shipment and ASP; the anticipated annual budget; capex strategies; environmental protection goals and water management strategies; impact of foreign currency exchange rates; expected foundry capacities; the ability to obtain new business opportunities; and information under the heading "First Quarter 2026 Outlook and Guidance."

These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause the actual performance, financial condition or results of operations of UMC to be materially different from what is stated or may be implied in such forward-looking statements. Investors are cautioned that actual events and results could differ materially from those statements as a result of a number of factors including, but not limited to: (i) dependence upon the frequent introduction of new services and technologies based on the latest developments in the industry in which UMC operates; (ii) the intensely competitive semiconductor, communications, consumer electronics and computer industries and markets; (iii) the risks associated with international business activities; (iv) dependence upon key personnel; (v) general economic and political conditions; (vi) possible disruptions in commercial activities caused by natural and human-induced events and disasters, including natural disasters, terrorist activity, armed conflict and highly contagious diseases; (vii) reduced end-user purchases relative to expectations and orders; and (viii) fluctuations in foreign currency exchange rates. Further information regarding these and other risk factors is included in UMC's filings with the United States Securities and Exchange Commission, including its Annual Report on Form 20-F. All information provided in this release is as of the date of this release and are based on assumptions that UMC believes to be reasonable as of this date, and UMC does not undertake any obligation to update any forward-looking statement as a result of new information, future events or otherwise, except as required under applicable law.

The financial statements included in this release are prepared and published in accordance with Taiwan International Financial Reporting Standards, or TIFRSs, recognized by the Financial Supervisory Commission in the ROC, which is different from International Financial Reporting Standards, or IFRSs, issued by the International Accounting Standards Board. Investors are cautioned that there may be significant differences between TIFRSs and IFRSs. In addition, TIFRSs and IFRSs differ in certain significant respects from generally accepted accounting principles in the ROC and generally accepted accounting principles in the United States.

- FINANCIAL TABLES TO FOLLOW -

UNITED MICROELECTRONICS CORPORATION AND SUBSIDIARIES
Consolidated Condensed Balance Sheet
As of December 31, 2025
Figures in Millions of New Taiwan Dollars (NT$) and U.S. Dollars (US$)


	December 31, 2025
	US$	NT$	%
Assets
Current assets
Cash and cash equivalents	3,524	110,660	19.1%
Accounts receivable, net	996	31,274	5.4%
Inventories, net	1,186	37,228	6.4%
Other current assets	816	25,621	4.4%
Total current assets	6,522	204,783	35.4%

Non-current assets
Funds and investments	2,400	75,373	13.0%
Property, plant and equipment	8,643	271,395	46.9%
Right-of-use assets	238	7,476	1.3%
Other non-current assets	636	19,969	3.5%
Total non-current assets	11,918	374,213	64.6%
Total assets	18,439	578,996	100.0%

Liabilities
Current liabilities
Short-term loans	268	8,409	1.5%
Payables	1,557	48,880	8.4%
Current portion of long-term liabilities	611	19,188	3.3%
Other current liabilities	396	12,420	2.2%
Total current liabilities	2,831	88,896	15.4%

Non-current liabilities
Bonds payable	1,085	34,071	5.9%
Long-term loans	360	11,301	2.0%
Lease liabilities, noncurrent	171	5,376	0.9%
Other non-current liabilities	1,895	59,496	10.3%
Total non-current liabilities	3,511	110,244	19.0%
Total liabilities	6,342	199,141	34.4%

Equity
Equity attributable to the parent company
Capital	4,009	125,882	21.7%
Additional paid-in capital	491	15,410	2.7%
Retained earnings and other components of equity	7,595	238,477	41.2%
Total equity attributable to the parent company	12,095	379,768	65.6%
Non-controlling interests	3	87	0.0%
Total equity	12,097	379,855	65.6%
Total liabilities and equity	18,439	578,996	100.0%


Notes:
(1) New Taiwan Dollars have been translated into U.S. Dollars at the December 31, 2025 exchange rate of NT $31.40 per U.S. Dollar.
(2) Sums may not equal totals due to rounding.

UNITED MICROELECTRONICS CORPORATION AND SUBSIDIARIES
Consolidated Condensed Statements of Comprehensive Income
Figures in Millions of New Taiwan Dollars (NT$) and U.S. Dollars (US$)
Except Per Share and Per ADS Data


	Year over Year Comparison								Quarter over Quarter Comparison
	Three-Month Period Ended								Three-Month Period Ended
	December 31, 2025				December 31, 2024		Chg.		December 31, 2025				September 30, 2025		Chg.
	US$		NT$		NT$		%		US$		NT$		NT$		%
Operating revenues	1,968		61,810		60,386		2.4	%	1,968		61,810		59,127		4.5	%
Operating costs	(1,365	)	(42,851	)	(42,043	)	1.9	%	(1,365	)	(42,851	)	(41,504	)	3.2	%
Gross profit	604		18,958		18,343		3.4	%	604		18,958		17,623		7.6	%
	30.7	%	30.7	%	30.4	%			30.7	%	30.7	%	29.8	%
Operating expenses
- Sales and marketing expenses	(19	)	(595	)	(623	)	(4.6	%)	(19	)	(595	)	(628	)	(5.3	%)
- General and administrative expenses	(59	)	(1,853	)	(1,791	)	3.5	%	(59	)	(1,853	)	(1,715	)	8.1	%
- Research and development expenses	(157	)	(4,937	)	(4,334	)	13.9	%	(157	)	(4,937	)	(4,631	)	6.6	%
- Expected credit impairment gain	0		0		0		(99.5	%)	0		0		0		0.0	%
Subtotal	(235	)	(7,384	)	(6,748	)	9.4	%	(235	)	(7,384	)	(6,973	)	5.9	%
Net other operating income and expenses	21		651		362		79.8	%	21		651		467		39.3	%
Operating income	389		12,225		11,957		2.2	%	389		12,225		11,118		10.0	%
	19.8	%	19.8	%	19.8	%			19.8	%	19.8	%	18.8	%

Net non-operating income and expenses	104		3,278		(1,443	)	-		104		3,278		3,526		(7.0	%)
Income from continuing operations before income tax	494		15,503		10,514		47.4	%	494		15,503		14,644		5.9	%
	25.1	%	25.1	%	17.4	%			25.1	%	25.1	%	24.8	%

Income tax benefit (expense)	(175	)	(5,504	)	(2,054	)	167.9	%	(175	)	(5,504	)	300		-
Net income	318		9,999		8,460		18.2	%	318		9,999		14,944		(33.1	%)
	16.2	%	16.2	%	14.0	%			16.2	%	16.2	%	25.3	%

Other comprehensive income (loss)	278		8,721		1,270		586.4	%	278		8,721		9,005		(3.2	%)

Total comprehensive income (loss)	596		18,720		9,730		92.4	%	596		18,720		23,949		(21.8	%)

Net income attributable to:
Shareholders of the parent	320		10,055		8,497		18.3	%	320		10,055		14,982		(32.9	%)
Non-controlling interests	(2	)	(56	)	(37	)	50.7	%	(2	)	(56	)	(38	)	46.9	%

Comprehensive income (loss) attributable to:
Shareholders of the parent	598		18,776		9,767		92.2	%	598		18,776		23,987		(21.7	%)
Non-controlling interests	(2	)	(56	)	(37	)	50.5	%	(2	)	(56	)	(38	)	47.0	%

Earnings per share-basic	0.026		0.81		0.68				0.026		0.81		1.20
Earnings per ADS ⁽²⁾	0.129		4.05		3.40				0.129		4.05		6.00
Weighted average number of shares
outstanding (in millions)			12,487		12,481						12,487		12,485


Notes:
(1) New Taiwan Dollars have been translated into U.S. Dollars at the December 31, 2025 exchange rate of NT $31.40 per U.S. Dollar.
(2) 1 ADS equals 5 common shares.
(3) Sums may not equal totals due to rounding.

UNITED MICROELECTRONICS CORPORATION AND SUBSIDIARIES
Consolidated Condensed Statements of Comprehensive Income
Figures in Millions of New Taiwan Dollars (NT$) and U.S. Dollars (US$)
Except Per Share and Per ADS Data

	For the Three-Month Period Ended						For the Twelve-Month Period Ended
	December 31, 2025						December 31, 2025
	US$		NT$		%		US$		NT$		%
Operating revenues	1,968		61,810		100.0	%	7,565		237,553		100.0	%
Operating costs	(1,365	)	(42,851	)	(69.3	%)	(5,371	)	(168,647	)	(71.0	%)
Gross profit	604		18,958		30.7	%	2,194		68,906		29.0	%


Operating expenses
- Sales and marketing expenses	(19	)	(595	)	(1.0	%)	(77	)	(2,433	)	(1.0	%)
- General and administrative expenses	(59	)	(1,853	)	(3.0	%)	(216	)	(6,792	)	(2.9	%)
- Research and development expenses	(157	)	(4,937	)	(8.0	%)	(564	)	(17,725	)	(7.5	%)
- Expected credit impairment gain	0		0		0.0	%	0		2		0.0	%
Subtotal	(235	)	(7,384	)	(11.9	%)	(858	)	(26,948	)	(11.3	%)
Net other operating income and expenses	21		651		1.1	%	63		1,990		0.8	%
Operating income	389		12,225		19.8	%	1,400		43,949		18.5	%

Net non-operating income and expenses	104		3,278		5.3	%	181		5,699		2.4	%
Income from continuing operations before income tax	494		15,503		25.1	%	1,581		49,648		20.9	%


Income tax expense	(175	)	(5,504	)	(8.9	%)	(258	)	(8,113	)	(3.4	%)
Net income	318		9,999		16.2	%	1,323		41,535		17.5	%

Other comprehensive income (loss)	278		8,721		14.1	%	(155	)	(4,860	)	(2.0	%)

Total comprehensive income (loss)	596		18,720		30.3	%	1,168		36,675		15.4	%

Net income attributable to:
Shareholders of the parent	320		10,055		16.3	%	1,329		41,716		17.6	%
Non-controlling interests	(2	)	(56	)	(0.1	%)	(6	)	(182	)	(0.1	%)

Comprehensive income (loss) attributable to:
Shareholders of the parent	598		18,776		30.4	%	1,174		36,857		15.5	%
Non-controlling interests	(2	)	(56	)	(0.1	%)	(6	)	(182	)	(0.1	%)

Earnings per share-basic	0.026		0.81				0.106		3.34
Earnings per ADS ⁽²⁾	0.129		4.05				0.532		16.70

Weighted average number of shares outstanding (in millions)			12,487						12,485

Notes:
(1) New Taiwan Dollars have been translated into U.S. Dollars at the December 31, 2025 exchange rate of NT $31.40 per U.S. Dollar.
(2) 1 ADS equals 5 common shares.
(3) Sums may not equal totals due to rounding.

UNITED MICROELECTRONICS CORPORATION AND SUBSIDIARIES
Consolidated Condensed Statement of Cash Flows
For the Twelve-Month Period Ended December 31, 2025
Figures in Millions of New Taiwan Dollars (NT$) and U.S. Dollars (US$)

	US$		NT$
Cash flows from operating activities :
Net income before tax	1,581		49,648
Depreciation & Amortization	1,887		59,259
Share of profit of associates and joint ventures	(77	)	(2,418	)
Income tax paid	(203	)	(6,361	)
Changes in working capital & others	(8	)	(264	)
Net cash provided by operating activities	3,180		99,864

Cash flows from investing activities :
Increase in financial assets measured at amortized cost	(263	)	(8,263	)
Acquisition of property, plant and equipment	(1,521	)	(47,745	)
Acquisition of intangible assets	(95	)	(2,989	)
Others	186		5,842
Net cash used in investing activities	(1,693	)	(53,154	)

Cash flows from financing activities :
Decrease in short-term loans	(3	)	(107	)
Proceeds from bonds issued	637		20,000
Proceeds from long-term loans	801		25,142
Repayments of long-term loans	(1,491	)	(46,831	)
Cash dividends	(1,140	)	(35,784	)
Others	(52	)	(1,624	)
Net cash used in financing activities	(1,249	)	(39,204	)

Effect of exchange rate changes on cash and cash equivalents	(59	)	(1,846	)
Net increase in cash and cash equivalents	180		5,660

Cash and cash equivalents at beginning of period	3,344		105,000

Cash and cash equivalents at end of period	3,524		110,660


Notes:
(1) New Taiwan Dollars have been translated into U.S. Dollars at the December 31, 2025 exchange rate of NT $31.40 per U.S. Dollar.
(2) Sums may not equal totals due to rounding.

¹ Unless otherwise stated, all financial figures discussed in this announcement are prepared in accordance with TIFRSs recognized by Financial Supervisory Commission in the ROC, which is different from IFRSs issued by the International Accounting Standards Board. They represent comparisons among the three-month period ending December 31, 2025, the three-month period ending September 30, 2025, and the equivalent three-month period that ended December 31, 2024. For all 4Q25 results, New Taiwan Dollar (NT$) amounts have been converted into U.S. Dollars at the December 31, 2025 exchange rate of NT$ 31.40 per U.S. Dollar.

² Revenue in this section represents wafer sales.

³ Utilization Rate = Quarterly Wafer Out / Quarterly Capacity

⁴ Estimated capacity numbers are based on calculated maximum output rather than designed capacity. The actual capacity numbers may differ depending upon equipment delivery schedules, pace of migration to more advanced process technologies, and other factors affecting production ramp-up.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260128921163/en/

Michael Lin / David Wong

UMC, Investor Relations

+ 886-2-2658-9168, ext. 16900

jinhong_lin@umc.com

david_wong@umc.com

UMC Reports Fourth Quarter 2025 Results