UNITED MICROELECTRONICS CORP (UMC) Form 10-K Annual Reports
UNITED MICROELECTRONICS CORP (UMC) is a publicly traded company on the NYSE, categorized under SIC 3674 (Semiconductors & Related Devices). Access real-time SEC filings, 10-K annual reports, 10-Q quarterlies, 8-K current reports, PCAOB auditor history, and executive compensation disclosures.
Ticker: UMC
CIK: 1033767
Exchange: NYSE
SIC 3674: Semiconductors & Related Devices
Fiscal Year End: 12/31
State: F5
Independent PCAOB Auditor
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Audit Firm
Ernst & Young
Auditor SinceSince 12/31/2016 12:00:00 AM
Lead Engagement PartnerYu Ni Yang
Audit LocationTaipei, Taiwan
Latest SEC EDGAR Filings
Showing 10-K, 10-Q, 8-K, Form 4, and other SEC submissions| Form | Filing Date | Reporting Period | Description | Accession Number | Actions |
|---|---|---|---|---|---|
| 6-K | 2026-10-13 | 2026-10-13 | 6-K | 0001193125-26-419602 | View SEC Doc Filr Page |
| 6-K | 2026-10-06 | 2026-10-06 | 6-K | 0001193125-26-414888 | View SEC Doc Filr Page |
| 6-K/A | 2026-10-05 | 2026-10-05 | 6-K/A | 0001193125-26-413417 | View SEC Doc Filr Page |
| 6-K | 2026-10-05 | 2026-10-05 | 6-K | 0001193125-26-413371 | View SEC Doc Filr Page |
| 6-K | 2026-09-29 | 2026-09-29 | 6-K | 0001193125-26-405903 | View SEC Doc Filr Page |
| 4 | 2026-09-22 | 2026-09-22 | 4 | 0001193125-26-397195 | View SEC Doc Filr Page |
| 3 | 2026-09-18 | 2026-09-11 | 3 | 0001193125-26-395009 | View SEC Doc Filr Page |
| 4 | 2026-09-17 | 2026-09-16 | 4 | 0001193125-26-393652 | View SEC Doc Filr Page |
| 4 | 2026-09-08 | 2026-09-07 | 4 | 0001193125-26-384273 | View SEC Doc Filr Page |
| 6-K | 2026-09-04 | 2026-09-04 | 6-K | 0001193125-26-382689 | View SEC Doc Filr Page |
| 6-K | 2026-09-02 | 2026-09-02 | 6-K | 0001193125-26-379275 | View SEC Doc Filr Page |
| 6-K | 2026-08-26 | 2026-08-26 | 6-K | 0001193125-26-365826 | View SEC Doc Filr Page |
| 6-K | 2026-08-14 | 2026-08-14 | 6-K | 0001193125-26-350180 | View SEC Doc Filr Page |
| 6-K | 2026-08-06 | 2026-08-06 | 6-K | 0001193125-26-336498 | View SEC Doc Filr Page |
| 6-K | 2026-08-05 | 2026-08-05 | 6-K | 0001193125-26-333718 | View SEC Doc Filr Page |
| 6-K | 2026-07-30 | 2026-07-30 | 6-K | 0001193125-26-324785 | View SEC Doc Filr Page |
| 6-K | 2026-07-29 | 2026-07-29 | 6-K | 0001193125-26-322030 | View SEC Doc Filr Page |
| 6-K | 2026-07-29 | 2026-07-29 | 6-K | 0001193125-26-322027 | View SEC Doc Filr Page |
| 6-K | 2026-07-21 | 2026-07-21 | 6-K | 0001193125-26-309462 | View SEC Doc Filr Page |
| 6-K | 2026-07-15 | 2026-07-15 | 6-K | 0001193125-26-303966 | View SEC Doc Filr Page |
| 6-K | 2026-07-14 | 2026-07-14 | 6-K | 0001193125-26-302459 | View SEC Doc Filr Page |
| 4 | 2026-07-13 | 2026-07-13 | 4 | 0001193125-26-301380 | View SEC Doc Filr Page |
| 6-K | 2026-07-06 | 2026-07-06 | 6-K | 0001193125-26-295459 | View SEC Doc Filr Page |
| 4 | 2026-06-30 | 2026-06-30 | 4 | 0001193125-26-291233 | View SEC Doc Filr Page |
| 6-K | 2026-06-29 | 2026-06-29 | 6-K | 0001193125-26-286731 | View SEC Doc Filr Page |