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United Microelectronics Corporation (UMC) Form 6-K: Report of foreign private issuer, 2025

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United Microelectronics Corporation Form 6-K: Report of foreign private issuer

Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.

  • 2025-12-30: Form 6-K; Period of report 2025-12-30; Description 6-K; Document 6k_on_12302025.htm.
  • 2025-12-17: Form 6-K; Period of report 2025-12-17; Description 6-K; Document 6k_on_12172025.htm.
  • 2025-12-10: Form 6-K; Period of report 2025-12-10; Description 6-K; Document 6k_on_12102025.htm.
  • 2025-12-04: Form 6-K; Period of report 2025-12-04; Description 6-K; Document 6k_on_12042025.htm.
FiledFormPeriod of reportDescriptionDocument
2025-12-306-K2025-12-306-K6k_on_12302025.htm
2025-12-176-K2025-12-176-K6k_on_12172025.htm
2025-12-106-K2025-12-106-K6k_on_12102025.htm
2025-12-046-K2025-12-046-K6k_on_12042025.htm
2025-11-286-K2025-11-286-K6k_on_11282025.htm
2025-11-206-K2025-11-206-K6k_on_11202025.htm
2025-11-126-K2025-11-126-K6k_on_11122025.htm
2025-11-066-K2025-11-066-K6k_on_11062025.htm
2025-10-296-K2025-10-296-K2025q3_quarterly_reports.htm
2025-10-296-K2025-10-296-K6k_on_10292025.htm
2025-10-286-K2025-10-286-K6k_on_10282025.htm
2025-10-276-K2025-10-276-K6k_on_10272025.htm
2025-10-216-K2025-10-216-K6k_on_10212025.htm
2025-10-156-K2025-10-156-K6k_on_10152025.htm
2025-10-076-K2025-10-076-K6k_on_10072025.htm
2025-09-226-K2025-09-226-K6k_on_09222025.htm
2025-09-106-K2025-09-106-K6k_on_09102025.htm
2025-09-046-K2025-09-046-K6k_on_09042025.htm
2025-08-136-K2025-08-136-K6k_on_08132025.htm
2025-08-126-K2025-08-126-K6k_on_08122025.htm
2025-08-066-K2025-08-066-K6k_on_08062025.htm
2025-07-306-K2025-07-306-K2025q2_quarterly_reports.htm
2025-07-306-K2025-07-306-K6k_on_07302025.htm
2025-07-286-K2025-07-286-K6k_on_07282025.htm
2025-07-226-K2025-07-226-K6k_on_07222025.htm
2025-07-106-K2025-07-106-K6k_on_07102025.htm
2025-07-076-K2025-07-076-K6k_on_07072025.htm
2025-06-306-K2025-06-306-K6k_on_06302025.htm
2025-06-206-K2025-06-206-K6k_on_06202025.htm
2025-06-106-K2025-06-106-K6k_on_06102025.htm
2025-06-056-K2025-06-056-K6k_on_06052025.htm
2025-06-046-K2025-06-046-K6k_on_06042025.htm
2025-05-286-K2025-05-286-K6k_on_05282025.htm
2025-05-156-K2025-05-156-K6k_on_05152025.htm
2025-05-086-K2025-05-086-K6k_on_05082025.htm
2025-04-246-K2025-04-246-K6k_on_04242025.htm
2025-04-236-K2025-04-236-K2025q1_quarterly_reports.htm
2025-04-236-K2025-04-236-K6k_on_04232025.htm
2025-04-106-K2025-04-106-K6k_on_04102025.htm
2025-04-016-K2025-04-016-K6k_on_04012025.htm
2025-03-206-K2024-12-316-Kumcfs4q24_6k.htm
2025-03-116-K2025-03-116-K6k_on_03112025.htm
2025-02-266-K2025-02-266-K6k_on_02262025.htm
2025-02-116-K2025-02-116-K6k_on_02112025.htm
2025-01-216-K2025-01-216-K6k_on_01212025.htm
2025-01-136-K2025-01-106-K6k_on_01102025.htm
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