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United Microelectronics Corporation (UMC) Form SD: Specialized disclosure report (conflict minerals)

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United Microelectronics Corporation Form SD: Specialized disclosure report (conflict minerals)

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

  • 2026-05-29: Form SD; Description SD; Document d142231dsd.htm.
  • 2025-05-29: Form SD; Description FORM SD; Document d841725dsd.htm.
  • 2024-05-31: Form SD; Description FORM SD; Document d814020dsd.htm.
  • 2023-05-31: Form SD; Description FORM SD; Document d454319dsd.htm.
FiledFormPeriod of reportDescriptionDocument
2026-05-29SDSDd142231dsd.htm
2025-05-29SDFORM SDd841725dsd.htm
2024-05-31SDFORM SDd814020dsd.htm
2023-05-31SDFORM SDd454319dsd.htm
2022-05-27SDFORM SDd260107dsd.htm
2021-05-28SDFORM SDd164194dsd.htm
2020-05-29SDFORM SDd925594dsd.htm
2019-05-31SDFORM SDd756749dsd.htm
2018-05-31SDFORM SDd592825dsd.htm
2017-05-31SDFORM SDd386241dsd.htm
2016-05-20SDFORM SDd185070dsd.htm
2015-05-22SDFORM SDd929624dsd.htm
2014-05-29SDFORM SDd736077dsd.htm
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