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United Microelectronics (UMC) SEC Filings & 10K Form

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$6.85 +0.09 (+1.33%)
Closing price 09/15/2025 03:59 PM Eastern
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$6.86 +0.02 (+0.22%)
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Recent United Microelectronics SEC Filings

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DateFilerForm TypeView
09/10/2025
5:33 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
09/04/2025
5:34 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
08/13/2025
5:14 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
08/12/2025
5:28 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
08/06/2025
5:38 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/30/2025
5:05 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/30/2025
5:08 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/22/2025
5:35 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/10/2025
5:32 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/07/2025
5:35 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/30/2025
5:32 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/20/2025
5:16 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/10/2025
5:59 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/05/2025
5:36 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/04/2025
5:03 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/29/2025
5:05 AM		United Microelectronics (Filer)
Form SD
Specialized Disclosure Report  
05/28/2025
5:40 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/15/2025
5:34 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/08/2025
5:23 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/24/2025
5:22 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/24/2025
5:10 AM		United Microelectronics (Filer)
Form 20-F
Registration statement / Annual report / Transition report  
04/23/2025
5:05 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/23/2025
5:08 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/10/2025
5:34 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/01/2025
5:36 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
03/20/2025
5:03 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
03/11/2025
5:31 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
02/26/2025
5:03 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
02/11/2025
5:02 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
01/21/2025
5:03 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
12/27/2024
5:06 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
12/26/2024
12:19 PM		United Microelectronics (Filer)
Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans  
12/18/2024
5:02 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
12/11/2024
5:03 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/25/2024
5:02 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/14/2024
5:18 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/13/2024
5:04 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
10/30/2024
5:02 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
10/22/2024
5:43 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
10/09/2024
5:24 AM		United Microelectronics (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
(Data available from 1/1/2016 forward)


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This page (NYSE:UMC) was last updated on 9/16/2025 by MarketBeat.com Staff
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