Companies: 10,795·Total market cap: $144.5T
United Microelectronics Corporation

United Microelectronics Corporation

UMCNYSETechnology● Active
$20.00
+$0.30(+1.52%)
Market Cap$49.9B
P/E Ratio—
52W High$23.69
52W Low$6.56
SEC Filings
Foreign Private Issuer · Files 20-F / 6-K

United Microelectronics Corporation (UMC) SEC Filings & 10-K Annual Reports

SEC EDGAR regulatory submissions (10-K, 10-Q, 8-K), latest forms, and full filing history — quick links to financials and earnings below.

SEC EDGAR · data.sec.gov · CIK 0001033767 · UMC · NYSE · as of Jun 8, 2026

Filing snapshot

709
Total Filings
6-K
Latest Form
2026-06-05
Most Recent
2000
Filing Since
FinancialsEarningsView All on EDGAR

Source: SEC EDGAR (data.sec.gov) · CIK 0001033767 · Updated hourly · Not investment advice

Latest Annual Report

20-F · Annual Report (Foreign Issuer)FY
Filed Date
2026-04-30
Fiscal Year End
Apr 30, 2026
Accession No.
0001193125-26-193757
Primary Document
d91630d20f.htm
View on SEC EDGARDownload PDFFiling Index
Source: data.sec.gov · CIK 0001033767 · Accession 0001193125-26-193757

Latest Key Filings

6-KQuarterly Report
6-K
2026-06-05
View 6-K on SEC
8-KCurrent Report

No recent filings

Form 4Insider Activity
Ownership Change Disclosures

Executive & director trade disclosures. Full buy/sell sentiment analysis on the dedicated tab.

View Insider Trades Tab

SEC Filing History

Hide Form 4 / 144
6-KCurrent Report (Foreign Issuer)
6-K
2026-06-05
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-06-03
View
SDSD
SD
2026-05-29
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-27
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-22
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-20
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-15
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-13
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-12
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-11
View
6-KCurrent Report (Foreign Issuer)
6-K
2026-05-08
View
3Initial Statement of Beneficial Ownership
3
2026-05-07
View
3Initial Statement of Beneficial Ownership
3
2026-05-07
View
3Initial Statement of Beneficial Ownership
3
2026-05-07
View
3Initial Statement of Beneficial Ownership
3
2026-05-07
View
Showing 1–15 of 709 filingsForm 4 / 144 hidden

About SEC Filings & 10-K Annual Reports

Data source: SEC EDGAR (data.sec.gov)  |  Updated: Hourly  |  CIK: 0001033767  |  Exchange: NYSE · Technology

United Microelectronics Corporation (NYSE: UMC) has submitted 709 documents to the U.S. Securities and Exchange Commission (SEC) since its IPO in 2000. As a Technology sector company with CIK 0001033767, all filings are publicly accessible via the EDGAR database at no cost.

The annual 10-K report is United Microelectronics Corporation's most comprehensive regulatory disclosure. The most recent United Microelectronics Corporation 10-K was filed on 2026-04-30 for fiscal year ending 2026. Historical UMC 10-K annual reports are available from 1997 through 2026.

Investors researching United Microelectronics Corporation SEC filings can access 10-K annual reports, quarterly 10-Q reports, material event 8-K filings, and proxy statements directly from the links above. All documents are sourced from the official SEC EDGAR system.

Source: SEC EDGAR · data.sec.gov · SEC Form 10-K · SEC Form 10-Q · SEC Form 8-K2026-06-08
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→ UMC Financials→ UMC Earnings→ UMC Insider Trades

Frequently Asked Questions

UMC SEC Filings · 8 questions

United Microelectronics Corporation (UMC) SEC filings are publicly available on this page and on the official SEC EDGAR database at sec.gov. You can browse all 709 filings and access original documents at no cost. United Microelectronics Corporation's CIK is 0001033767.

UMC SEC filingsUnited Microelectronics Corporation SEC documentsfind UMC 10-K