American Superconductor Corporation (AMSC) — SEC filings
Recent SEC filings for American Superconductor Corporation — 10-K, 10-Q, 8-K, proxy statements, and insider transactions.
| Form Type | Filing Date | Accepted Date |
|---|---|---|
| ARS | 2026-06-18 | 2026-06-18 |
| DEFA14A | 2026-06-18 | 2026-06-18 |
| DEF 14A | 2026-06-18 | 2026-06-18 |
| 4 | 2026-06-12 | 2026-06-12 |
| 4 | 2026-06-11 | 2026-06-11 |
| 4 | 2026-06-11 | 2026-06-11 |
| 4 | 2026-06-10 | 2026-06-10 |
| 4 | 2026-06-10 | 2026-06-10 |
| 8-K | 2026-06-02 | 2026-06-02 |
| SD | 2026-05-29 | 2026-05-29 |
| 10-K | 2026-05-27 | 2026-05-27 |
| 8-K | 2026-05-27 | 2026-05-27 |
| SC 13G | 2026-04-29 | 2026-04-29 |
| 4 | 2026-04-07 | 2026-04-07 |
| 4 | 2026-04-07 | 2026-04-07 |
| 4 | 2026-04-07 | 2026-04-07 |
| 4 | 2026-04-07 | 2026-04-07 |
| 4 | 2026-04-07 | 2026-04-07 |
| 4 | 2026-04-07 | 2026-04-07 |
| SC 13G/A | 2026-03-26 | 2026-03-26 |
Recent SEC filings.