UMC on NYSE

United Microelectronics Corporation

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons4

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 From Wikipedia, CC BY-SA 4.0

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Last updated Oct 16, 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 inTaiwan5
  • Business address8F, No.68, Sec. 1, Neihu Rd.,, Taipei, F5 114935
  • Filer categoryLarge accelerated filer5
UMC UT Tower
Photo: ABOVE THE SKY, CC BY-SA 4.0, via Wikimedia Commons7

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

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 margin8
22.2%Operating margin8
21.0%Net margin8
-2.5%Revenue growth, 20248
13.3%Return on equity8
$162.5MFree cash flow8

Where the money goes

Where each dollar of revenue went, fiscal 2024

  • Other costs79¢$5.6B
  • Profit21¢$1.5B

Out of $7.1B in revenue.8

Where each dollar of operating cash went, fiscal 2024

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

Out of $2.9B of cash from operations.8

Financial statements

Revenue910111213148$7.1B in 2024+43% since 2018
0$2.5B$5.0B$7.5B$10.0B2018: $4.9B$4.9B20182019: $5.0B$5.0B2019+0%2020: $6.3B$6.3B2020+27%2021: $7.7B$7.7B2021+22%2022: $9.1B$9.1B2022+18%2023: $7.3B$7.3B2023−20%2024: $7.1B$7.1B2024−3%
Gross profit910111213148$2.3B in 2024+209% since 2018
0$2.0B$4.0B$6.0B2018: $746.2M$746.2M20182019: $712.6M$712.6M2019−4%2020: $1.4B$1.4B2020+95%2021: $2.6B$2.6B2021+87%2022: $4.1B$4.1B2022+58%2023: $2.5B$2.5B2023−38%2024: $2.3B$2.3B2024−9%
Operating income910111213148$1.6B in 2024+748% since 2018
0$1.0B$2.0B$3.0B$4.0B2018: $185.6M$185.6M20182019: $163.3M$163.3M2019−12%2020: $781.0M$781.0M2020+378%2021: $1.9B$1.9B2021+139%2022: $3.4B$3.4B2022+82%2023: $1.9B$1.9B2023−44%2024: $1.6B$1.6B2024−17%
Net income910111213148$1.5B in 2024+1299% since 2018
0$1.0B$2.0B$3.0B2018: $106.1M$106.1M20182019: $153.0M$153.0M2019+44%2020: $742.6M$742.6M2020+385%2021: $1.8B$1.8B2021+146%2022: $2.9B$2.9B2022+61%2023: $2.0B$2.0B2023−33%2024: $1.5B$1.5B2024−24%

Every line of the income statement in the latest annual report, as filed.15

Period ending2025-12-312024-12-312023-12-31
Operating revenues237.6B TWD232.3B TWD222.5B TWD
Operating costs-168.6B TWD-156.6B TWD-144.8B TWD
Gross profit68.9B TWD75.7B TWD77.7B 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 gains2.4M TWD69.5M TWD130.5M TWD
Subtotal-26.9B TWD-25.4B TWD-23.9B TWD
Net other operating income and expenses2.0B TWD1.3B TWD4.0B TWD
Operating income43.9B TWD51.6B TWD57.9B TWD
Interest income2.3B TWD3.7B TWD4.9B TWD
Other income2.5B TWD1.3B TWD1.8B TWD
Other gains and losses925.2M TWD-302.7M TWD223.1M TWD
Finance costs-1.6B TWD-1.8B TWD-1.6B TWD
Share of profit or loss of associates and joint ventures657.2M TWD1.2B TWD4.3B TWD
Bargain purchase gain in acquisition of equity investee0 TWD0 TWD494.0M TWD
Exchange gain, net0 TWD1.3B TWD478.8M TWD
Exchange loss, net-583.1M TWD
Subtotal4.1B TWD5.4B TWD10.6B TWD
Income from continuing operations before income tax48.1B TWD57.0B TWD68.5B TWD
Income tax expense-7.9B TWD-8.4B TWD-8.3B TWD
Net income40.2B TWD48.7B TWD60.1B TWD
Remeasurements of defined benefit pension plans145.1M TWD188.5M TWD402.2M TWD
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income-3.4B TWD-539.3M TWD5.5B TWD
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss3.1B TWD301.1M TWD1.6B TWD
Income tax related to items that will not be reclassified subsequently29.8M TWD16.2M TWD-414.4M TWD
Subtotal-158.7M TWD-33.5M TWD7.1B TWD
Exchange differences on translation of foreign operations-5.8B TWD8.9B 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 TWD323.4M TWD-74.4M TWD
Income tax related to items that may be reclassified subsequently515.4M TWD129.0M TWD390.4M TWD
Subtotal-5.4B TWD9.4B TWD-2.1B TWD
Total other comprehensive income (loss)-5.5B TWD9.3B TWD5.1B TWD
Shareholders of the parent40.4B TWD48.8B TWD59.7B TWD
Non-controlling interests-181.5M TWD-104.7M TWD450.2M TWD
Shareholders of the parent34.9B TWD58.1B TWD64.7B TWD
Non-controlling interests-181.5M TWD-104.6M TWD450.2M TWD
Total comprehensive income (loss)34.7B TWD58.0B TWD65.2B TWD
Earnings per share-basic3.30 TWD4.01 TWD4.92 TWD
Earnings per share-diluted3.27 TWD3.94 TWD4.82 TWD

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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 4.0.6

Subsidiaries and ownership

Subsidiaries

  • United Microelectronics (United States)

Also owns

  • Silicon Integrated Systems
  • Wavetek Microelectronics Corporation

From Wikidata.1

Acquisitions

  1. 1995Funtech Entertainment Corporation became a subsidiary1

Timeline

  1. Jul 16, 1985Went public Listed on Taiwan Stock Exchange1
  2. 1980Founded Founded1

Recent filings

  1. Oct 13, 20266-K
  2. Oct 6, 20266-K
  3. Oct 5, 20266-K
  4. Oct 5, 20266-K/A
  5. Sep 29, 20266-K
  6. Sep 22, 20264
  7. Sep 18, 20263
  8. Sep 17, 20264
  9. Sep 8, 20264
  10. Sep 4, 20266-K
  11. Sep 2, 20266-K
  12. Aug 26, 20266-K
  13. Aug 14, 20266-K
  14. Aug 6, 20266-K
  15. Aug 5, 20266-K

Every filing from the last three years, summarized. The full record is on SEC EDGAR.2