UMC · NYSE · CIK 0001033767

UNITED MICROELECTRONICS CORP

UNITED MICROELECTRONICS CORP’s most recent SEC filing in our snapshot is a Form 6-K filed on Oct 23, 2026. In fiscal 2024 (year ended Dec 31, 2024) it reported revenue of TWD 232.3B and net income of TWD 48.7B, according to its XBRL data on EDGAR. Its EDGAR record lists 5 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2024
TWD 232.3B
Net income, FY2024
TWD 48.7B
Form 4 filings on record, past 12 months
5

Company overview

Legal name (as filed)
UNITED MICROELECTRONICS CORP
Ticker
UMC
SEC Central Index Key (CIK)
0001033767
Industry (SIC)
Semiconductors & Related Devices (code 3674)
Business address
TAIPEI, Taiwan
State or country of incorporation
Taiwan
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#339 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from UNITED MICROELECTRONICS CORP’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in TWD; the fiscal year is named for the calendar year in which it ends.

Revenue
TWD 176.8BFY2020TWD 213.0BFY2021TWD 278.7BFY2022TWD 222.5BFY2023TWD 232.3BFY2024
Net income
TWD 20.9BFY2020TWD 50.6BFY2021TWD 90.3BFY2022TWD 60.1BFY2023TWD 48.7BFY2024
UMC annual results
ItemFY2020
ended Dec 31, 2020		FY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024
RevenueTWD 176.8BTWD 213.0BTWD 278.7BTWD 222.5BTWD 232.3B
Net incomeTWD 20.9BTWD 50.6BTWD 90.3BTWD 60.1BTWD 48.7B
Diluted EPSTWD 1.87TWD 4.19TWD 7.16TWD 4.82TWD 3.94
Total assetsTWD 366.5BTWD 451.0BTWD 524.6BTWD 546.6BTWD 560.2B
Cash and equivalentsTWD 94.0BTWD 132.6BTWD 173.8BTWD 132.6BTWD 105.0B

XBRL tags used: revenue = Revenue; netIncome = ProfitLoss; assets = Assets; eps = DilutedEarningsLossPerShare; cash = CashAndCashEquivalents. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

UMC latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Apr 30, 202620-FAnnual report of a foreign private issuer· period Dec 31, 2025Document · Index
Oct 23, 20266-KReport of a foreign private issuer· period Oct 23, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about UNITED MICROELECTRONICS CORP, by form type:

6-K ×324 ×53 ×16-K/A ×1SD ×1
UMC recent filings
FiledFormWhat it isOriginal
Oct 23, 20266-KReport of a foreign private issuer· period Oct 23, 2026Document · Index
Oct 13, 20266-KReport of a foreign private issuer· period Oct 13, 2026Document · Index
Oct 6, 20266-KReport of a foreign private issuer· period Oct 6, 2026Document · Index
Oct 5, 20266-K/A6-K/A· period Oct 5, 2026Document · Index
Oct 5, 20266-KReport of a foreign private issuer· period Oct 5, 2026Document · Index
Sep 29, 20266-KReport of a foreign private issuer· period Sep 29, 2026Document · Index
Sep 22, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 22, 2026Document · Index
Sep 18, 20263Initial statement of beneficial ownership· period Sep 11, 2026Document · Index
Sep 17, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 16, 2026Document · Index
Sep 8, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 7, 2026Document · Index
Sep 4, 20266-KReport of a foreign private issuer· period Sep 4, 2026Document · Index
Sep 2, 20266-KReport of a foreign private issuer· period Sep 2, 2026Document · Index
Aug 26, 20266-KReport of a foreign private issuer· period Aug 26, 2026Document · Index
Aug 14, 20266-KReport of a foreign private issuer· period Aug 14, 2026Document · Index
Aug 6, 20266-KReport of a foreign private issuer· period Aug 6, 2026Document · Index
Aug 5, 20266-KReport of a foreign private issuer· period Aug 5, 2026Document · Index
Jul 30, 20266-KReport of a foreign private issuer· period Jul 30, 2026Document · Index
Jul 29, 20266-KReport of a foreign private issuer· period Jul 29, 2026Document · Index
Jul 29, 20266-KReport of a foreign private issuer· period Jul 29, 2026Document · Index
Jul 21, 20266-KReport of a foreign private issuer· period Jul 21, 2026Document · Index
Jul 15, 20266-KReport of a foreign private issuer· period Jul 15, 2026Document · Index
Jul 14, 20266-KReport of a foreign private issuer· period Jul 14, 2026Document · Index
Jul 13, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 13, 2026Document · Index
Jul 6, 20266-KReport of a foreign private issuer· period Jul 6, 2026Document · Index
Jun 30, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 30, 2026Document · Index
Jun 29, 20266-KReport of a foreign private issuer· period Jun 29, 2026Document · Index
Jun 23, 20266-KReport of a foreign private issuer· period Jun 23, 2026Document · Index
Jun 22, 20266-KReport of a foreign private issuer· period Jun 22, 2026Document · Index
Jun 18, 20266-KReport of a foreign private issuer· period Jun 18, 2026Document · Index
Jun 16, 20266-KReport of a foreign private issuer· period Jun 16, 2026Document · Index
Jun 5, 20266-KReport of a foreign private issuer· period Jun 5, 2026Document · Index
Jun 3, 20266-KReport of a foreign private issuer· period Jun 3, 2026Document · Index
May 29, 2026SDSpecialized disclosure report (conflict minerals)Document · Index
May 27, 20266-KReport of a foreign private issuer· period May 27, 2026Document · Index
May 22, 20266-KReport of a foreign private issuer· period May 22, 2026Document · Index
May 20, 20266-KReport of a foreign private issuer· period May 20, 2026Document · Index
May 15, 20266-KReport of a foreign private issuer· period May 15, 2026Document · Index
May 13, 20266-KReport of a foreign private issuer· period May 13, 2026Document · Index
May 12, 20266-KReport of a foreign private issuer· period May 12, 2026Document · Index
May 11, 20266-KReport of a foreign private issuer· period May 11, 2026Document · Index

Insider filing activity

5 Form 4 filings appear in UNITED MICROELECTRONICS CORP’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001033767 and XBRL company facts. UNITED MICROELECTRONICS CORP on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.