United Microelectronics Corporation – Filings and Transcripts

NYSE: UMC
Share price (4/24/26): $12.28
Market cap (4/24/26): $30.8 billion

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ended 12/31/24 FY 2024

ended 12/31/23 FY 2023

ended 12/31/22 FY 2022

ended 12/31/21 FY 2021

ended 12/31/20 FY 2020

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Registration of securities for employees

Registration of securities for employees

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Post-effective amendment of registration of ADRs

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Announcement of the Company's Board Meeting Date of Q1, 2026 Consolidated Financial Report

Exhibit Description 99.1 Announcement on 2026/04/15: UMC Will Convene Q1 2026 Investor Conference 99.2 Announcement on 2026/04/09: The Trading and Pledge of UMC Common Shares by Directors, Executive Officers and 10% Shareholders of UMC

Exhibit Description 99.1 Announcement on 2026/04/08: March Revenue

Announcement on Disclosures by Directors and Officers Pursuant to the U.S. Securities Exchange Act

Exhibit Description 99.1 Announcement on 2026/03/12: Represent Major Subsidiary United Semiconductor (Xiamen) Co., Ltd. to Announce Important Resolutions of the 2026 Shareholders’ Meeting

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Conflict Minerals disclosure

Conflict Minerals disclosure

Conflict Minerals disclosure

Conflict Minerals disclosure

Conflict Minerals disclosure