UMC on NYSE

United Microelectronics Corporation

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons⁵

Taiwanese semiconductor foundry

United Microelectronics Corporation (UMC; Chinese: 聯華電子; pinyin: Liánhuá Diànzǐ) is a Taiwanese company based in Hsinchu, Taiwan. It was founded as Taiwan's first semiconductor company in 1980 as a spin-off of the government-sponsored Industrial Technology Research Institute (ITRI).³ It employed about 19,000 people.¹ Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

1980Founded¹

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TickerUMC on NYSE¹
Industrysemiconductor industry¹
HeadquartersHsinchu City¹
Websitewww.umc.com
Legal formCompany Limited by Shares (Taiwan)¹
Listed onNew York Stock Exchange (UMC), Taiwan Stock Exchange (2303)¹
Incorporated inTaiwan⁶
Business address8F, No.68, Sec. 1, Neihu Rd.,, Taipei, F5 11493⁶
Filer categoryLarge accelerated filer⁶
LEI391200YJCAGH9LF96P73⁴
StatusActive⁴
LEI statusIssued and current⁴
Registered addressNo. 3, Lixing 2nd Road, 300094 Hsinchu City, Taiwan⁴
Registered withMinistry of Economic Affairs, 47217677⁴

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Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2024

32.6%Gross margin⁹

22.2%Operating margin⁹

21.0%Net margin⁹

-2.5%Revenue growth, 2024⁹

13.3%Return on equity⁹

$162.5MFree cash flow⁹

Where the money goes

Where each dollar of revenue went, fiscal 2024

Cost of revenueProfit

Cost of revenue67¢$4.8B
Research and development7¢$476.2M
Other costs1¢$37.7M
Interest1¢$53.6M
Income tax4¢$255.3M
Profit21¢$1.5B

Out of $7.1B in revenue.⁹

Where each dollar of operating cash went, fiscal 2024

Capital spending

Capital spending94¢$2.7B
Kept or used elsewhere6¢$162.5M

Out of $2.9B of cash from operations.⁹

Financial statements

Revenue¹⁰¹¹¹²¹³¹⁴¹⁵⁹$7.1B in 2024+43% since 2018

Gross profit¹⁰¹¹¹²¹³¹⁴¹⁵⁹$2.3B in 2024+209% since 2018

Operating income¹⁰¹¹¹²¹³¹⁴¹⁵⁹$1.6B in 2024+748% since 2018

Net income¹⁰¹¹¹²¹³¹⁴¹⁵⁹$1.5B in 2024+1299% since 2018

Every line of the income statement as filed: the last 3 fiscal years, latest first.¹⁶

Period ending	2025-12-31	2024-12-31	2023-12-31
Operating revenues	237.6B TWD	232.3B TWD	222.5B TWD
Operating costs	-168.6B TWD	-156.6B TWD	-144.8B TWD
Gross profit	68.9B TWD	75.7B TWD	77.7B TWD
Sales and marketing expenses	-2.4B TWD	-2.7B TWD	-3.2B TWD
General and administrative expenses	-6.8B TWD	-7.1B TWD	-7.5B TWD
Research and development expenses	-17.7B TWD	-15.6B TWD	-13.3B TWD
Expected credit impairment gains	2.4M TWD	69.5M TWD	130.5M TWD
Subtotal	-26.9B TWD	-25.4B TWD	-23.9B TWD
Net other operating income and expenses	2.0B TWD	1.3B TWD	4.0B TWD
Operating income	43.9B TWD	51.6B TWD	57.9B TWD
Interest income	2.3B TWD	3.7B TWD	4.9B TWD
Other income	2.5B TWD	1.3B TWD	1.8B TWD
Other gains and losses	925.2M TWD	-302.7M TWD	223.1M TWD
Finance costs	-1.6B TWD	-1.8B TWD	-1.6B TWD
Share of profit or loss of associates and joint ventures	657.2M TWD	1.2B TWD	4.3B TWD
Bargain purchase gain in acquisition of equity investee	0 TWD	0 TWD	494.0M TWD
Exchange gain, net	0 TWD	1.3B TWD	478.8M TWD
Exchange loss, net	-583.1M TWD
Subtotal	4.1B TWD	5.4B TWD	10.6B TWD
Income from continuing operations before income tax	48.1B TWD	57.0B TWD	68.5B TWD
Income tax expense	-7.9B TWD	-8.4B TWD	-8.3B TWD
Net income	40.2B TWD	48.7B TWD	60.1B TWD
Remeasurements of defined benefit pension plans	145.1M TWD	188.5M TWD	402.2M TWD
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income	-3.4B TWD	-539.3M TWD	5.5B TWD
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss	3.1B TWD	301.1M TWD	1.6B TWD
Income tax related to items that will not be reclassified subsequently	29.8M TWD	16.2M TWD	-414.4M TWD
Subtotal	-158.7M TWD	-33.5M TWD	7.1B TWD
Exchange differences on translation of foreign operations	-5.8B TWD	8.9B TWD	-2.4B TWD
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss	-17.3M TWD	323.4M TWD	-74.4M TWD
Income tax related to items that may be reclassified subsequently	515.4M TWD	129.0M TWD	390.4M TWD
Subtotal	-5.4B TWD	9.4B TWD	-2.1B TWD
Total other comprehensive income (loss)	-5.5B TWD	9.3B TWD	5.1B TWD
Shareholders of the parent	40.4B TWD	48.8B TWD	59.7B TWD
Non-controlling interests	-181.5M TWD	-104.7M TWD	450.2M TWD
Shareholders of the parent	34.9B TWD	58.1B TWD	64.7B TWD
Non-controlling interests	-181.5M TWD	-104.6M TWD	450.2M TWD
Total comprehensive income (loss)	34.7B TWD	58.0B TWD	65.2B TWD
Earnings per share-basic	3.30 TWD	4.01 TWD	4.92 TWD
Earnings per share-diluted	3.27 TWD	3.94 TWD	4.82 TWD

Total assets¹⁰¹¹¹²¹³¹⁴¹⁵⁹$17.1B in 2024+44% since 2018

Total liabilities¹⁰¹¹¹²¹³¹⁴¹⁵⁹$5.9B in 2024+15% since 2018

Shareholders’ equity¹⁰¹¹¹²¹³¹⁴¹⁵⁹$11.2B in 2024+67% since 2018

Cash¹¹¹²¹³¹⁴¹⁵⁹$3.2B in 2024+14% since 2018

Every line of the balance sheet as filed: the last 4 fiscal years (annual) or 4 quarters (quarterly), latest first.¹⁶

Period ending	2025-12-31	2024-12-31	2023-12-31	2022-12-31
Cash and cash equivalents	110.7B TWD	105.0B TWD	132.6B TWD	173.8B TWD
Financial assets at fair value through profit or loss, current	568.5M TWD	606.0M TWD
Financial assets at fair value through other comprehensive income, current	4.6B TWD	5.9B TWD
Financial assets measured at amortized cost, current	12.5B TWD	3.7B TWD
Contract assets, current	705.4M TWD	625.7M TWD
Accounts receivable, net	30.8B TWD	32.7B TWD
Accounts receivable-related parties, net	502.1M TWD	620.0M TWD
Other receivables	2.5B TWD	1.7B TWD
Current tax assets	66.4M TWD	83.9M TWD
Inventories, net	37.2B TWD	35.8B TWD
Other current assets	4.7B TWD	3.0B TWD
Total current assets	204.8B TWD	189.7B TWD
Financial assets at fair value through profit or loss, noncurrent	17.6B TWD	17.9B TWD
Financial assets at fair value through other comprehensive income, noncurrent	9.1B TWD	11.3B TWD
Investments accounted for under the equity method	36.9B TWD	33.3B TWD
Property, plant and equipment	271.4B TWD	279.1B TWD
Right-of-use assets	7.5B TWD	8.0B TWD
Intangible assets	4.7B TWD	4.2B TWD
Deferred tax assets	8.6B TWD	5.2B TWD
Prepayment for equipment	1.2B TWD	4.9B TWD
Refundable deposits	1.6B TWD	2.0B TWD
Other noncurrent assets	3.9B TWD	4.6B TWD
Total non-current assets	362.5B TWD	370.5B TWD
Total assets	567.3B TWD	560.2B TWD
Short-term loans	8.4B TWD	8.5B TWD
Financial liabilities at fair value through profit or loss, current	57.2M TWD	901.0M TWD
Contract liabilities, current	2.6B TWD	2.2B TWD	3.3B TWD
Accounts payable	9.2B TWD	7.6B TWD
Other payables	24.4B TWD	24.1B TWD
Payables on equipment	11.7B TWD	10.5B TWD
Current tax liabilities	5.5B TWD	5.5B TWD
Lease liabilities, current	624.8M TWD	636.4M TWD
Current portion of long-term liabilities	19.2B TWD	11.0B TWD
Other current liabilities	7.9B TWD	6.4B TWD
Total current liabilities	89.5B TWD	77.4B TWD
Contract liabilities, noncurrent	1.8B TWD	459.6M TWD	430.6M TWD
Bonds payable	34.1B TWD	24.6B TWD
Long-term loans	11.3B TWD	30.9B TWD
Deferred tax liabilities	12.2B TWD	8.1B TWD
Lease liabilities, noncurrent	5.4B TWD	5.8B TWD
Net defined benefit liabilities, noncurrent	866.2M TWD	1.4B TWD
Guarantee deposits	39.8B TWD	42.0B TWD
Other noncurrent liabilities	6.4B TWD	3.8B TWD
Total non-current liabilities	111.8B TWD	117.1B TWD
Total liabilities	201.4B TWD	194.5B TWD
Common stock	125.9B TWD	125.6B TWD
Premiums	5.2B TWD	5.0B TWD
Treasury stock transactions	9.8B TWD	9.1B TWD
Transactions with noncontrolling interests	3.2B TWD	3.2B TWD
Share-based payment	2.0B TWD	1.9B TWD
Other	21.0M TWD	20.9M TWD
Legal reserve	41.5B TWD	36.7B TWD
Unappropriated earnings	184.2B TWD	184.2B TWD
Exchange differences on translation of foreign operations	-4.4B TWD	915.4M TWD
Unrealized gains or losses on financial assets measured at fair value through other comprehensive income	10.4B TWD	10.7B TWD
Unearned employee compensation	-2.1B TWD	-2.0B TWD
Treasury stock	-9.8B TWD	-9.8B TWD
Total equity attributable to the parent company	365.8B TWD	365.5B TWD
Non-controlling interests	87.2M TWD	256.6M TWD	340.9M TWD	343.7M TWD
Total equity	365.9B TWD	365.7B TWD	343.7B TWD	322.8B TWD
Total liabilities and equity	567.3B TWD	560.2B TWD
Common stock, par value	10.00 TWD	10.00 TWD
Common stock, shares authorized	26.0B shares	26.0B shares
Common stock, shares issued	12.6B shares	12.6B shares

Period ending	2025-12-31	2024-12-31	2023-12-31	2022-12-31
Cash and cash equivalents	110.7B TWD	105.0B TWD	132.6B TWD	173.8B TWD
Financial assets at fair value through profit or loss, current	568.5M TWD	606.0M TWD
Financial assets at fair value through other comprehensive income, current	4.6B TWD	5.9B TWD
Financial assets measured at amortized cost, current	12.5B TWD	3.7B TWD
Contract assets, current	705.4M TWD	625.7M TWD
Accounts receivable, net	30.8B TWD	32.7B TWD
Accounts receivable-related parties, net	502.1M TWD	620.0M TWD
Other receivables	2.5B TWD	1.7B TWD
Current tax assets	66.4M TWD	83.9M TWD
Inventories, net	37.2B TWD	35.8B TWD
Other current assets	4.7B TWD	3.0B TWD
Total current assets	204.8B TWD	189.7B TWD
Financial assets at fair value through profit or loss, noncurrent	17.6B TWD	17.9B TWD
Financial assets at fair value through other comprehensive income, noncurrent	9.1B TWD	11.3B TWD
Investments accounted for under the equity method	36.9B TWD	33.3B TWD
Property, plant and equipment	271.4B TWD	279.1B TWD
Right-of-use assets	7.5B TWD	8.0B TWD
Intangible assets	4.7B TWD	4.2B TWD
Deferred tax assets	8.6B TWD	5.2B TWD
Prepayment for equipment	1.2B TWD	4.9B TWD
Refundable deposits	1.6B TWD	2.0B TWD
Other noncurrent assets	3.9B TWD	4.6B TWD
Total non-current assets	362.5B TWD	370.5B TWD
Total assets	567.3B TWD	560.2B TWD
Short-term loans	8.4B TWD	8.5B TWD
Financial liabilities at fair value through profit or loss, current	57.2M TWD	901.0M TWD
Contract liabilities, current	2.6B TWD	2.2B TWD	3.3B TWD
Accounts payable	9.2B TWD	7.6B TWD
Other payables	24.4B TWD	24.1B TWD
Payables on equipment	11.7B TWD	10.5B TWD
Current tax liabilities	5.5B TWD	5.5B TWD
Lease liabilities, current	624.8M TWD	636.4M TWD
Current portion of long-term liabilities	19.2B TWD	11.0B TWD
Other current liabilities	7.9B TWD	6.4B TWD
Total current liabilities	89.5B TWD	77.4B TWD
Contract liabilities, noncurrent	1.8B TWD	459.6M TWD	430.6M TWD
Bonds payable	34.1B TWD	24.6B TWD
Long-term loans	11.3B TWD	30.9B TWD
Deferred tax liabilities	12.2B TWD	8.1B TWD
Lease liabilities, noncurrent	5.4B TWD	5.8B TWD
Net defined benefit liabilities, noncurrent	866.2M TWD	1.4B TWD
Guarantee deposits	39.8B TWD	42.0B TWD
Other noncurrent liabilities	6.4B TWD	3.8B TWD
Total non-current liabilities	111.8B TWD	117.1B TWD
Total liabilities	201.4B TWD	194.5B TWD
Common stock	125.9B TWD	125.6B TWD
Premiums	5.2B TWD	5.0B TWD
Treasury stock transactions	9.8B TWD	9.1B TWD
Transactions with noncontrolling interests	3.2B TWD	3.2B TWD
Share-based payment	2.0B TWD	1.9B TWD
Other	21.0M TWD	20.9M TWD
Legal reserve	41.5B TWD	36.7B TWD
Unappropriated earnings	184.2B TWD	184.2B TWD
Exchange differences on translation of foreign operations	-4.4B TWD	915.4M TWD
Unrealized gains or losses on financial assets measured at fair value through other comprehensive income	10.4B TWD	10.7B TWD
Unearned employee compensation	-2.1B TWD	-2.0B TWD
Treasury stock	-9.8B TWD	-9.8B TWD
Total equity attributable to the parent company	365.8B TWD	365.5B TWD
Non-controlling interests	87.2M TWD	256.6M TWD	340.9M TWD	343.7M TWD
Total equity	365.9B TWD	365.7B TWD	343.7B TWD	322.8B TWD
Total liabilities and equity	567.3B TWD	560.2B TWD
Common stock, par value	10.00 TWD	10.00 TWD
Common stock, shares authorized	26.0B shares	26.0B shares
Common stock, shares issued	12.6B shares	12.6B shares

Cash from operations¹⁰¹¹¹²¹³¹⁴¹⁵⁹$2.9B in 2024+72% since 2018

Capital spending¹⁰¹¹¹²¹³¹⁴¹⁵⁹$2.7B in 2024+322% since 2018

Free cash flow¹⁰¹¹¹²¹³¹⁴¹⁵⁹$162.5M in 2024−84% since 2018

Share buybacks¹³¹⁴$0 in 2022

Every line of the cash flow as filed: the last 3 fiscal years, latest first.¹⁶

Period ending	2025-12-31	2024-12-31	2023-12-31
Net income before tax	48.1B TWD	57.0B TWD	68.5B TWD
Depreciation	56.4B TWD	45.5B TWD	37.8B TWD
Amortization	2.8B TWD	2.7B TWD	2.7B TWD
Expected credit impairment gains	-2.4M TWD	-69.5M TWD	-130.5M TWD
Net loss (gain) of financial assets and liabilities at fair value through profit or loss	-707.1M TWD	321.0M TWD	40.6M TWD
Interest expense	1.5B TWD	1.7B TWD	1.5B TWD
Interest income	-2.3B TWD	-3.7B TWD	-4.9B TWD
Dividend income	-2.4B TWD	-1.2B TWD	-1.8B TWD
Share-based payment	491.3M TWD	788.8M TWD	1.0B TWD
Share of profit of associates and joint ventures	-657.2M TWD	-1.2B TWD	-4.3B TWD
Gain on disposal of property, plant and equipment	-99.2M TWD	-72.4M TWD	-268.3M TWD
Gain on disposal of subsidiary	0 TWD	-352.0K TWD	0 TWD
Loss (gain) on disposal of investments accounted for under the equity method	-218.1M TWD	2.1M TWD	-163.4M TWD
Exchange loss (gain) on financial assets and liabilities	-991.4M TWD	1.3B TWD	85.4M TWD
Bargain purchase gain in acquisition of equity investee	0 TWD	0 TWD	-494.0M TWD
Gain on lease modification	-5.8M TWD	-8.6M TWD	-113.0K TWD
Amortization of deferred government grants	-1.5B TWD	-841.1M TWD	-2.7B TWD
Income and expense adjustments	52.4B TWD	45.2B TWD	28.5B TWD
Financial assets and liabilities at fair value through profit or loss	-65.0M TWD	-543.1M TWD	1.9B TWD
Contract assets	-77.3M TWD	110.4M TWD	-381.1M TWD
Accounts receivable	1.8B TWD	-3.3B TWD	7.2B TWD
Other receivables	-232.7M TWD	662.6M TWD	-526.2M TWD
Inventories	-1.8B TWD	365.3M TWD	-4.9B TWD
Other current assets	-400.5M TWD	192.3M TWD	939.9M TWD
Contract fulfillment costs	-600.9M TWD	303.3M TWD	-164.3M TWD
Contract liabilities	1.8B TWD	-599.5M TWD	-267.9M TWD
Accounts payable	1.6B TWD	14.6M TWD	-1.3B TWD
Other payables	70.4M TWD	-1.2B TWD	-5.7B TWD
Other current liabilities	470.0M TWD	1.1B TWD	1.5B TWD
Net defined benefit liabilities	-420.9M TWD	-584.4M TWD	-262.1M TWD
Other noncurrent liabilities	-3.1M TWD	-4.9M TWD	-89.6M TWD
Cash generated from operations	102.6B TWD	98.8B TWD	94.8B TWD
Interest received	2.3B TWD	4.2B TWD	4.6B TWD
Dividend received	2.4B TWD	2.3B TWD	3.6B TWD
Interest paid	-1.0B TWD	-1.3B TWD	-1.0B TWD
Income tax paid	-6.4B TWD	-10.0B TWD	-16.0B TWD
Net cash provided by operating activities	99.9B TWD	93.9B TWD	86.0B TWD
Acquisition of financial assets at fair value through profit or loss	-625.5M TWD	-1.9B TWD	-1.2B TWD
Proceeds from disposal of financial assets at fair value through profit or loss	633.2M TWD	989.1M TWD	525.2M TWD
Proceeds from capital reduction of financial assets at fair value through other comprehensive income	160.7M TWD	0 TWD	0 TWD
Acquisition of financial assets at fair value through other comprehensive income	-150.0M TWD	-64.7M TWD	0 TWD
Acquisition of financial assets measured at amortized cost	-15.0B TWD	-4.2B TWD	-6.3B TWD
Proceeds from redemption of financial assets measured at amortized cost	6.7B TWD	6.7B TWD	678.9M TWD
Acquisition of investments accounted for under the equity method	0 TWD	-534.0M TWD	0 TWD
Proceeds from disposal of investments accounted for under the equity method	0 TWD	0 TWD	293.3M TWD
Proceeds from capital reduction of investments accounted for under the equity method	575.0M TWD	1.6B TWD	1.3B TWD
Increase in prepayment for investments	0 TWD	-7.1M TWD	0 TWD
Acquisition of subsidiary (net of cash acquired)	-19.4M TWD	0 TWD	0 TWD
Disposal of subsidiary	0 TWD	-196.0M TWD	0 TWD
Acquisition of property, plant and equipment	-47.7B TWD	-88.5B TWD	-91.5B TWD
Proceeds from disposal of property, plant and equipment	128.8M TWD	120.9M TWD	323.4M TWD
Increase in refundable deposits	-243.4M TWD	-769.2M TWD	-44.1M TWD
Decrease in refundable deposits	317.3M TWD	1.5B TWD	83.9M TWD
Acquisition of intangible assets	-3.0B TWD	-2.8B TWD	-2.5B TWD
Government grants related to assets acquisition	5.1B TWD	2.1B TWD	591.1M TWD
Increase in other noncurrent assets	-32.4M TWD	-29.2M TWD	-42.5M TWD
Decrease in other noncurrent assets	36.0K TWD	0 TWD	0 TWD
Net cash used in investing activities	-53.2B TWD	-85.9B TWD	-97.8B TWD
Increase in short-term loans	18.8B TWD	30.7B TWD	29.1B TWD
Decrease in short-term loans	-18.9B TWD	-35.7B TWD	-15.6B TWD
Cash payments for the principal portion of the lease liability	-849.8M TWD	-731.1M TWD	-666.4M TWD
Proceeds from bonds issued	20.0B TWD	0 TWD	10.0B TWD
Bonds issuance costs	-15.9M TWD	-465.0K TWD	-10.8M TWD
Redemption of bonds	0 TWD	-8.5B TWD	0 TWD
Proceeds from long-term loans	25.1B TWD	36.3B TWD	15.4B TWD
Repayments of long-term loans	-46.8B TWD	-23.1B TWD	-11.6B TWD
Increase in guarantee deposits	2.8B TWD	68.0M TWD	11.7B TWD
Decrease in guarantee deposits	-3.6B TWD	-640.4M TWD	-1.2B TWD
Decrease in other financial liabilities	0 TWD	0 TWD	-21.2B TWD
Cash dividends	-35.8B TWD	-37.6B TWD	-45.0B TWD
Change in non-controlling interests	22.5M TWD	26.3M TWD	4.2M TWD
Net cash used in financing activities	-39.2B TWD	-39.2B TWD	-29.1B TWD
Effect of exchange rate changes on cash and cash equivalents	-1.8B TWD	3.7B TWD	-392.1M TWD
Net increase (decrease) in cash and cash equivalents	5.7B TWD	-27.6B TWD	-41.3B TWD

Compare United Microelectronics Corporation with another company

Corporate structure

United Microelectronics Corporation sits at the top of its group. 6 entities, 3 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of United Microelectronics Corporation

BlackRock Filed SCHEDULE 13G/A on United Microelectronics Corporation, latest Apr 29, 2026 (4 filings since Feb 8, 2022)

United Microelectronics Corporation Hsinchu City, Taiwan
- ITE Subsidiary · Hsinchu Science Park
- Silicon Integrated Systems Subsidiary · Hsinchu, Taiwan
- United Microelectronics (United States) Subsidiary · Sunnyvale, United States
- Wavetek Microelectronics Corporation Subsidiary
- UMC Capital Corporation Subsidiary · Camana Bay, Cayman Islands

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What United Microelectronics Corporation reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

Item	Latest	A year before	Change
Property and equipment, net	$8.5B⁹ Dec 31, 2024	$7.8B¹⁵ Dec 31, 2023	+9.0%
Operating-lease assets (leased space)	$245.2M⁹ Dec 31, 2024	$228.6M¹⁵ Dec 31, 2023	+7.2%

Investments

Item	Latest	A year before	Change
Cash and cash equivalents	$3.2B⁹ Dec 31, 2024	$4.0B⁹ Dec 31, 2023	−20.8%

Inventory

Item	Latest	A year before	Change
Inventory, total	$1.1B⁹ Dec 31, 2024	$1.2B¹⁵ Dec 31, 2023	−6.4%

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.¹

The story

On May 22, 1980, UMC was spun off from the Industrial Technology Research Institute and was formally established as the first private integrated circuit company in Taiwan.

1983: TMC starts a joint research project with US-based Vitelic.

1985

UMC was officially listed on the Taiwan Stock Exchange (code: 2303). It was the first listed semiconductor company in Taiwan. At that time, Morris Chang was its chairman.

UMC sets up a subsidiary, Unicorn Microelectronics Corporation (also abbreviated UMC), in Silicon Valley to improve access to technology, signing joint research agreements with Mosel (later Mosel Vitelic) and Quasel.

1995: UMC decided to transform from an IDM company with its own products to a professional pure-play foundry.

1996: Spun off its IC design units to establish MediaTek, Novatek, ITE Technology, Faraday Technology, AMIC Technology, and Davicom.

1999: Fab 12A 12-inch wafer fab in Tainan Science Park was officially established.

Read the full text

2000:

Listed on the New York Stock Exchange (code: UMC) as Taiwan's second semiconductor company to do so.

Produces the first chips using copper process technology and the first 0.13 micron ICs in the semiconductor industry.

2004: 12-inch wafer fab in Singapore enters mass production.

2013: Fully acquires "Hejian Technology Wafer Fab" in Suzhou, China.

2015: USCXM 12-inch wafer fab located in Xiamen, Fujian Province, China was officially established.

2017: 28 nm mass production begins at USCXM in Xiamen, China.

July 2017: UMC invested US$611 million to expand its Xiamen factory.

2019: Fully acquired Japan-based Mie Fujitsu Semiconductor.

2020: Reached a plea agreement with the U.S. Department of Justice to resolve a 2018 trade secrets case.

2021: Joins RE100 and pledges net zero emissions by 2025.

2021: UMC and Micron announced globally to withdraw their complaints against the other party, and the companies look forward to engaging in mutual business cooperation opportunities.

U.S. Indictment and guilty plea

The United States Department of Justice indicted UMC and Chinese firm Fujian Jinhua in 2018, alleging that they conspired to steal intellectual property from U.S. company Micron. In October 2020, UMC and the U.S. Department of Justice reached a plea agreement, with UMC pleading guilty to one count of receiving and possessing a stolen trade secret and agreeing to pay a fine of $60 million. UMC's plea and Plea Agreement resolved the 2018 trade secrets case brought against UMC by the U.S. Department of Justice. As part of the Plea Agreement, DOJ agreed to dismiss the original indictment against UMC, including allegations of conspiracy to commit economic espionage and conspiracy to steal multiple trade secrets from Micron Technology, Inc. ("Micron"), patent-related allegations, and alleged damages and penalties of US$400 million to $8.75 billion. The one trade secret at issue in the guilty plea and Plea Agreement related to older technology that had been in mass production worldwide for several years. DOJ also dismissed a related civil case against UMC. Aside from the fine amount, UMC has no further financial obligations to DOJ. The Plea Agreement also provides that UMC will cooperate with DOJ and will be subject to a three-year term of non-supervised probation.

In November 2021, UMC and Micron agreed to withdraw complaints against each other globally following a years-long legal dispute over intellectual property rights (IP). UMC will make an undisclosed one-time payment to Micron Technology. Both parties also announced their intention to seek mutual business cooperation opportunities in the future.

In February 2024, US District Judge Maxine M. Chesney in San Francisco ruled that the US prosecutors failed to prove that Chinese firm, Fujian Jinhua had misappropriated trade secrets from Micron Technology Inc. Therefore, the Court found Jinhua not guilty.

From Wikipedia’s article on United Microelectronics Corporation, shared under CC BY-SA 4.0.⁷

Leadership

Who has led United Microelectronics Corporation, and when. Pick a name to see everywhere that person has worked.

1990200020102020

Chief executive officerJason Shi Wang Mar 18, 2026 to now¹⁷
ChairChia-Tsung Hung Mar 18, 2026 to now¹⁸
PresidentMing-Chih Hsu Mar 18, 2026 to now¹⁹
Chief financial officerChitung Liu Mar 18, 2026 to now²⁰
Chief operating officerMing-Chih Hsu Mar 18, 2026 to now¹⁹

Board members and other officers (23)

Vice PresidentChia-Ao Lu May 7, 2026 to now²¹
CISO & SVPChung-Hsien Wu May 7, 2026 to now²²
CHRO & VPJin-Shuang Chen May 7, 2026 to now²³
SVPKuei-Chun Hung May 7, 2026 to now²⁴
Vice PresidentLin-Wu Kuo May 7, 2026 to now²⁵
SVPOliver Chang May 7, 2026 to now²⁶
Vice PresidentShih-Chieh Hsu May 7, 2026 to now²⁷
Vice PresidentShih-Fang Tzou May 7, 2026 to now²⁸
Vice PresidentShih-Wei Liu May 7, 2026 to now²⁹
Vice PresidentShu-Fen Hsu May 7, 2026 to now³⁰
Vice PresidentTzyy-Ming Cheng May 7, 2026 to now³¹
Vice PresidentWen Yi Tan May 7, 2026 to now³²
Vice PresidentYing-Sheng Shen May 7, 2026 to now³³
Vice PresidentYu-Chih Chuang May 7, 2026 to now³⁴
CHRO & VPHung-Yu Yen Sep 18, 2026 to now³⁵
Board memberJason Shi Wang Mar 18, 2026 to now¹⁷
Board memberJyuo-Min Shyu Mar 18, 2026 to now³⁶
Board memberKuang-Si Shiu Mar 18, 2026 to now³⁷
Board memberLih-Juann Chen Mar 18, 2026 to now³⁸
Board memberMing-Chih Hsu Mar 18, 2026 to now¹⁹
Board memberSu-Lin Wang Mar 18, 2026 to now³⁹
Board memberWen Hsin Hsu Mar 18, 2026 to now⁴⁰
General counselChing Yu Liao May 7, 2026 to now⁴¹

Subsidiaries and ownership

Subsidiaries

United Microelectronics (United States)

Also owns

From Wikidata.¹

Acquisitions

1995Funtech Entertainment Corporation became a subsidiary¹

Timeline

Mar 18, 2026New chief executive Jason Shi Wang becomes CEO¹⁷
Jul 16, 1985Went public Listed on Taiwan Stock Exchange¹
1980Founded Founded¹

Calendar

Coming up

Oct 28, 2026 · Before the openReports results for the quarter ending Sep/2026 A year earlier it reported $0.20 a share, on Oct 29, 2025.⁴²

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar

Filings

231 filings to the SEC since October 2021: 5 annual reports, 35 insider forms, 4 large holders, 187 other. The latest 20:

Oct 13, 20266-K EDGAR
Oct 6, 20266-K EDGAR
Oct 5, 20266-K/A EDGAR
Oct 5, 20266-K EDGAR
Sep 29, 20266-K EDGAR
Sep 22, 20264 EDGAR
Sep 18, 20263 EDGAR
Sep 17, 20264 EDGAR
Sep 8, 20264 EDGAR
Sep 4, 20266-K EDGAR
Sep 2, 20266-K EDGAR
Aug 26, 20266-K EDGAR
Aug 14, 20266-K EDGAR
Aug 6, 20266-K EDGAR
Aug 5, 20266-K EDGAR
Jul 30, 20266-K EDGAR
Jul 29, 20266-K EDGAR
Jul 29, 20266-K EDGAR
Jul 21, 20266-K EDGAR
Jul 15, 20266-K EDGAR

The 231 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

5 open-market trades by officers, directors and large owners since October 2021: 0 buys and 5 sales. Grants, option exercises and gifts are left out.

Date	Who	Trade	Shares	Price	Value	Filing
Sep 22, 2026	LIN JEN-TSUNGVice President	Sale	10,000	$163.00	$1.6M	Form 4
Sep 17, 2026	Liu ChitungCFO & SVP	Sale	400,000	$145.00	$58.0M	Form 4
Sep 16, 2026	Liu ChitungCFO & SVP	Sale	1,200,000	$142.33	$170.8M	Form 4
Jul 13, 2026	Liu ChitungCFO & SVP	Sale	1,900,000	$154.89	$294.3M	Form 4
Jun 30, 2026	HU CHE-JENVice President	Sale	10,000	$171.30	$1.7M	Form 4

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

BlackRockSCHEDULE 13G/A, 4 filings Feb 8, 2022 to Apr 29, 2026⁴³

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.

Fund	Shares	Value	Share of the fund	Change
BlackRock, Inc.	31,544,454	$858.3M	0.0%	+4,048,574
UBS Group AG	11,632,967	$316.5M	0.1%	+3,457,823
Goldman Sachs Group Inc	11,109,785	$302.3M	0.0%	+5,234,921
Bank Of America Corp /de/	10,181,208	$277.0M	0.0%	+7,577,990
Vanguard Capital Management LLC	8,601,967	$234.1M	0.0%	−386,476
Morgan Stanley	8,285,573	$225.5M	0.0%	−492,330
Aqr Capital Management LLC	7,718,125	$210.0M	0.1%	−6,995,905
Rafferty Asset Management, LLC	7,653,378	$208.2M	0.5%	+2,669,725
Man Group plc	5,593,427	$152.2M	0.3%	−135,474
Citigroup Inc	5,414,362	$147.3M	0.1%	+1,117,640
Barclays PLC	4,892,286	$133.1M	0.0%	+153,419
State Street Corp	4,878,124	$132.7M	0.0%	−135,085
Neuberger Berman Group LLC	4,134,788	$111.0M	0.1%	+4,020,723
Northern Trust Corp	3,986,872	$108.5M	0.0%	+787,998
Jpmorgan Chase & Co	3,660,899	$98.3M	0.0%	+3,400,195
Dimensional Fund Advisors LP	3,218,824	$87.6M	0.0%	+369,087
Two Sigma Investments, LP	3,088,852	$84.0M	0.1%	−6,566,550
Creative Planning	2,450,717	$66.7M	0.0%	+86,346
Tidal Investments LLC	2,355,267	$64.1M	0.2%	+759,116
Empowered Funds, LLC	1,891,076	$51.5M	0.3%	New
Matthews International Capital Management LLC	1,465,694	$39.9M	13.7%	+488,049
Connor, Clark & Lunn Investment Management Ltd.	1,342,996	$36.5M	0.1%	+632,913
Vanguard Portfolio Management LLC	1,231,451	$33.5M	0.0%	−1,531,631
Bnp Paribas Financial Markets	1,126,943	$30.7M	0.0%	−454,936
E Fund Management Co., Ltd.	995,790	$27.1M	0.6%	New

13F reports cover disclosed long positions in U.S. stocks only.

SEC filer profile

How United Microelectronics Corporation is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

Name on EDGARUNITED MICROELECTRONICS CORP²
CIK0001033767
Filer statusLarge accelerated filer not an emerging growth company; not a shell company⁴⁴
Incorporated inF5⁴⁴
Fiscal year endsDecember 31²
Industry code (SIC)3674 Semiconductors & Related Devices²
SEC reviewing officeOffice of Manufacturing, Division of Corporation Finance²
Business address8F, No.68, Sec. 1, Neihu Rd.,, Taipei, F5 11493²
Phone886-2-2658-9168²
Shares outstanding12,588,156,344 shares as of Dec 31, 2025⁴⁴
AuditorErnst & Young, Taipei, Taiwan PCAOB ID 1443; it also attests to the company’s internal control over financial reporting⁴⁴
On EDGAR sinceFeb 14, 1997²
Filings738 in all: 6-K (582), 3 (30), 20-F (25), UPLOAD (22), SC 13G/A (14), SD (13), CORRESP (12), SC 13G (10)²
All 21 form types
4 (5), S-8 (5), F-6 POS (4), 6-K/A (3), SC 13D/A (3), 424B5 (2), SC 13D (2), 20-F/A (1), EFFECT (1), F-3/A (1), F-6 (1), F-6EF (1), SCHEDULE 13G/A (1)
Latest filingsAnnual report (20-F) Apr 30, 2026

Securities registered for trading

Class	Symbol	Exchange
American Depositary Shares, each representing five common shares	UMC	New York Stock Exchange

From the cover page of the 20-F filed Apr 30, 2026 (Section 12(b) of the Exchange Act).⁴⁴

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataUnited Microelectronics Corporation on Wikidata
2
SEC EDGARUnited Microelectronics Corporation filings on SEC EDGAR
3
WikipediaUnited Microelectronics Corporation on Wikipedia
4
GLEIFUnited Microelectronics Corporation LEI record (391200YJCAGH9LF96P73)
5
Wikimedia CommonsUnited Microelectronics Corporation logo by Unknown author Unknown author, Public domain
6
SEC EDGARUnited Microelectronics Corporation filings on SEC EDGAR
7
WikipediaUnited Microelectronics Corporation on Wikipedia (revision used)
8
Wikimedia CommonsUnited Microelectronics Corporation photo by ABOVE THE SKY, CC BY-SA 4.0
9
SEC EDGARUnited Microelectronics Corporation 10-K for fiscal 2024
10
SEC EDGARUnited Microelectronics Corporation 10-K for fiscal 2018
11
SEC EDGARUnited Microelectronics Corporation 10-K for fiscal 2019
12
SEC EDGARUnited Microelectronics Corporation 10-K for fiscal 2020
13
SEC EDGARUnited Microelectronics Corporation 10-K for fiscal 2021
14
SEC EDGARUnited Microelectronics Corporation 10-K for fiscal 2022
15
SEC EDGARUnited Microelectronics Corporation 10-K for fiscal 2023
16
SEC EDGARUnited Microelectronics Corporation 20-F filed 2026-04-30: income statement
17
SEC EDGARJason Shi Wang, Chief executive officer
18
SEC EDGARChia-Tsung Hung, Chair
19
SEC EDGARMing-Chih Hsu, President
20
SEC EDGARChitung Liu, Chief financial officer
21
SEC EDGARChia-Ao Lu, Vice President
22
SEC EDGARChung-Hsien Wu, CISO & SVP
23
SEC EDGARJin-Shuang Chen, CHRO & VP
24
SEC EDGARKuei-Chun Hung, SVP
25
SEC EDGARLin-Wu Kuo, Vice President
26
SEC EDGAROliver Chang, SVP
27
SEC EDGARShih-Chieh Hsu, Vice President
28
SEC EDGARShih-Fang Tzou, Vice President
29
SEC EDGARShih-Wei Liu, Vice President
30
SEC EDGARShu-Fen Hsu, Vice President
31
SEC EDGARTzyy-Ming Cheng, Vice President
32
SEC EDGARWen Yi Tan, Vice President
33
SEC EDGARYing-Sheng Shen, Vice President
34
SEC EDGARYu-Chih Chuang, Vice President
35
SEC EDGARHung-Yu Yen, CHRO & VP
36
SEC EDGARJyuo-Min Shyu, Board member
37
SEC EDGARKuang-Si Shiu, Board member
38
SEC EDGARLih-Juann Chen, Board member
39
SEC EDGARSu-Lin Wang, Board member
40
SEC EDGARWen Hsin Hsu, Board member
41
SEC EDGARChing Yu Liao, General counsel
42
NasdaqNasdaq calendar
43
SEC EDGARBlackRock SCHEDULE 13G/A on United Microelectronics Corporation
44
SEC EDGARUnited Microelectronics Corporation 20-F filed Apr 30, 2026: cover page