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: 15
Latest filed: Apr 07, 2026
| Form | Count |
|---|---|
| 4 | 8 |
| 8-K | 4 |
| SCHEDULE 13G/A | 2 |
| 8-K/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| 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 |
| Feb 26, 2026 | 4 | Feb 24, 2026 | 0001193125-26-077349 | View |
| Feb 17, 2026 | 8-K/A | Dec 05, 2025 | 0001437749-26-004349 | View |
| Feb 04, 2026 | 8-K | Feb 04, 2026 | 0001437749-26-002977 | View |
| Jan 30, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000102 | View |
| Dec 23, 2025 | 8-K | Dec 23, 2025 | 0001193125-25-330930 | View |
| Dec 10, 2025 | 8-K | Dec 05, 2025 | 0001193125-25-314153 | View |
| Nov 13, 2025 | 4 | Jun 18, 2019 | 0001193125-25-280371 | View |
| Nov 05, 2025 | 8-K | Nov 05, 2025 | 0001437749-25-033344 | View |