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United Microelectronics Corporation (UMC) Form 6-K: Report of foreign private issuer, 2021

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.

  • 2021-12-27: Form 6-K; Period of report 2021-12-27; Description 6-K; Document umc-6k_20211227.htm.
  • 2021-11-26: Form 6-K; Period of report 2021-11-26; Description 6-K; Document umc-6k_20211126.htm.
  • 2021-11-17: Form 6-K; Period of report 2021-09-30; Description FORM 6-K; Document umcfs3q21_6k.htm.
  • 2021-10-27: Form 6-K; Period of report 2021-10-27; Description 6-K; Document umc-6k_20211027.htm.
FiledFormPeriod of reportDescriptionDocument
2021-12-276-K2021-12-276-Kumc-6k_20211227.htm
2021-11-266-K2021-11-266-Kumc-6k_20211126.htm
2021-11-176-K2021-09-30FORM 6-Kumcfs3q21_6k.htm
2021-10-276-K2021-10-276-Kumc-6k_20211027.htm
2021-10-256-K2021-10-256-Kumc-6k_20211025.htm
2021-09-276-K2021-09-276-Kumc-6k_20210927.htm
2021-09-036-K2021-09-036-Kumc-6k_20210903.htm
2021-08-256-K2021-08-256-Kumc-6k_20210825.htm
2021-08-106-K2021-06-30FORM 6-Kumcfs2q21_6k.htm
2021-07-286-K2021-07-286-Kumc-6k_20210728.htm
2021-07-266-K2021-07-266-Kumc-6k_20210726.htm
2021-07-086-K/A2021-07-086-K/Aumc-6ka_20210708.htm
2021-07-076-K2021-07-076-Kumc-6k_20210707.htm
2021-06-296-K2021-06-296-Kumc-6k_20210629.htm
2021-06-256-K2021-06-256-Kumc-6k_20210625.htm
2021-06-176-K2021-06-176-Kumc-6k_20210617.htm
2021-05-256-K2021-05-256-Kumc-6k_20210525.htm
2021-05-216-K2021-05-216-Kumc-6k_20210521.htm
2021-05-056-K2021-03-31UMCFS1Q21_6Kumcfs1q21_6k.htm
2021-05-046-K2021-05-046-Kumc-6k_20210504.htm
2021-04-296-K2021-04-296-Kumc-6k_20210429.htm
2021-04-286-K2021-04-286-Kumc-6k_20210428.htm
2021-03-256-K2021-03-256-Kumc-6k_20210325.htm
2021-03-156-K2020-12-31FORM 6-Kumcfs4q20_6k.htm
2021-02-246-K2021-02-246-Kumc-6k_20210224.htm
2021-01-276-K2021-01-276-Kumc-6k_20210127.htm