UNITED MICROELECTRONICS CORP - UMC
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 41
Latest filed: Sep 17, 2026
| Form | Count |
|---|---|
| 6-K | 36 |
| 4 | 4 |
| SCHEDULE 13G/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Sep 17, 2026 | 4 | Sep 16, 2026 | 0001193125-26-393652 | View |
| Sep 08, 2026 | 4 | Sep 07, 2026 | 0001193125-26-384273 | View |
| Sep 04, 2026 | 6-K | Sep 04, 2026 | 0001193125-26-382689 | View |
| Sep 02, 2026 | 6-K | Sep 02, 2026 | 0001193125-26-379275 | View |
| Aug 26, 2026 | 6-K | Aug 26, 2026 | 0001193125-26-365826 | View |
| Aug 14, 2026 | 6-K | Aug 14, 2026 | 0001193125-26-350180 | View |
| Aug 06, 2026 | 6-K | Aug 06, 2026 | 0001193125-26-336498 | View |
| Aug 05, 2026 | 6-K | Aug 05, 2026 | 0001193125-26-333718 | View |
| Jul 30, 2026 | 6-K | Jul 30, 2026 | 0001193125-26-324785 | View |
| Jul 29, 2026 | 6-K | Jul 29, 2026 | 0001193125-26-322027 | View |
| Jul 29, 2026 | 6-K | Jul 29, 2026 | 0001193125-26-322030 | View |
| Jul 21, 2026 | 6-K | Jul 21, 2026 | 0001193125-26-309462 | View |
| Jul 15, 2026 | 6-K | Jul 15, 2026 | 0001193125-26-303966 | View |
| Jul 14, 2026 | 6-K | Jul 14, 2026 | 0001193125-26-302459 | View |
| Jul 13, 2026 | 4 | Jul 13, 2026 | 0001193125-26-301380 | View |
| Jul 06, 2026 | 6-K | Jul 06, 2026 | 0001193125-26-295459 | View |
| Jun 30, 2026 | 4 | Jun 30, 2026 | 0001193125-26-291233 | View |
| Jun 29, 2026 | 6-K | Jun 29, 2026 | 0001193125-26-286731 | View |
| Jun 23, 2026 | 6-K | Jun 23, 2026 | 0001193125-26-278424 | View |
| Jun 22, 2026 | 6-K | Jun 22, 2026 | 0001193125-26-276606 | View |
| Jun 18, 2026 | 6-K | Jun 18, 2026 | 0001193125-26-274873 | View |
| Jun 16, 2026 | 6-K | Jun 16, 2026 | 0001193125-26-271747 | View |
| Jun 05, 2026 | 6-K | Jun 05, 2026 | 0001193125-26-258291 | View |
| Jun 03, 2026 | 6-K | Jun 03, 2026 | 0001193125-26-254481 | View |
| May 27, 2026 | 6-K | May 27, 2026 | 0001193125-26-240337 | View |
| May 22, 2026 | 6-K | May 22, 2026 | 0001193125-26-235406 | View |
| May 20, 2026 | 6-K | May 20, 2026 | 0001193125-26-231655 | View |
| May 15, 2026 | 6-K | May 15, 2026 | 0001193125-26-225017 | View |
| May 13, 2026 | 6-K | May 13, 2026 | 0001193125-26-220535 | View |
| May 12, 2026 | 6-K | May 12, 2026 | 0001193125-26-218058 | View |
| May 11, 2026 | 6-K | May 11, 2026 | 0001193125-26-215564 | View |
| May 08, 2026 | 6-K | May 08, 2026 | 0001193125-26-213164 | View |
| May 07, 2026 | 6-K | May 07, 2026 | 0001193125-26-210117 | View |
| Apr 30, 2026 | 6-K | Apr 30, 2026 | 0001193125-26-193804 | View |
| Apr 29, 2026 | SCHEDULE 13G/A | — | 0002012383-26-001777 | View |
| Apr 29, 2026 | 6-K | Apr 29, 2026 | 0001193125-26-188788 | View |
| Apr 29, 2026 | 6-K | Apr 29, 2026 | 0001193125-26-188808 | View |
| Apr 21, 2026 | 6-K | Apr 21, 2026 | 0001193125-26-164977 | View |
| Apr 15, 2026 | 6-K | Apr 15, 2026 | 0001193125-26-155859 | View |
| Apr 08, 2026 | 6-K | Apr 08, 2026 | 0001193125-26-146257 | View |
| Mar 26, 2026 | 6-K | Mar 26, 2026 | 0001193125-26-124974 | View |