AMERICAN SUPERCONDUCTOR CORP /DE/ - AMSC
All tracked SEC files for this issuer. Showing up to 200 latest records.
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Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 28
Latest filed: Aug 05, 2026
| Form | Count |
|---|---|
| 4 | 13 |
| 144 | 9 |
| 8-K | 3 |
| SCHEDULE 13G/A | 2 |
| SCHEDULE 13G | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Aug 05, 2026 | 8-K | Jul 31, 2026 | 0001437749-26-025921 | View |
| Jul 31, 2026 | SCHEDULE 13G/A | — | 0002100119-26-001340 | View |
| Jun 12, 2026 | 4 | Jun 11, 2026 | 0001193125-26-269433 | View |
| Jun 11, 2026 | 4 | Jun 11, 2026 | 0001193125-26-267642 | View |
| Jun 11, 2026 | 4 | Jun 11, 2026 | 0001193125-26-267677 | View |
| Jun 11, 2026 | 144 | — | 0001950047-26-005955 | View |
| Jun 11, 2026 | 144 | — | 0001950047-26-005923 | View |
| Jun 10, 2026 | 4 | Jun 08, 2026 | 0001193125-26-265990 | View |
| Jun 10, 2026 | 4 | Jun 08, 2026 | 0001193125-26-265996 | View |
| Jun 10, 2026 | 144 | — | 0001949846-26-000370 | View |
| Jun 08, 2026 | 144 | — | 0001950047-26-005744 | View |
| Jun 08, 2026 | 144 | — | 0001950047-26-005745 | View |
| Jun 03, 2026 | 144 | — | 0001950047-26-005556 | View |
| Jun 03, 2026 | 144 | — | 0001950047-26-005559 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0001193125-26-255450 | View |
| Jun 03, 2026 | 4 | Jun 01, 2026 | 0001193125-26-255471 | View |
| Jun 02, 2026 | 8-K | Jun 01, 2026 | 0001437749-26-019163 | View |
| Jun 02, 2026 | 144 | — | 0001950047-26-005472 | View |
| Jun 02, 2026 | 144 | — | 0001950047-26-005517 | View |
| May 27, 2026 | 8-K | May 27, 2026 | 0001437749-26-018539 | View |
| Apr 29, 2026 | SCHEDULE 13G | — | 0002100119-26-000109 | View |
| Apr 07, 2026 | 4 | Apr 03, 2026 | 0001193125-26-145787 | View |
| Apr 07, 2026 | 4 | Apr 03, 2026 | 0001193125-26-145795 | View |
| Apr 07, 2026 | 4 | Apr 03, 2026 | 0001193125-26-145799 | View |
| Apr 07, 2026 | 4 | Apr 03, 2026 | 0001193125-26-145803 | View |
| Apr 07, 2026 | 4 | Apr 03, 2026 | 0001193125-26-145810 | View |
| Apr 07, 2026 | 4 | Apr 03, 2026 | 0001193125-26-145815 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000605 | View |