AMSC · American Superconductor Corp /De/ · Documents
Market Cap
$1.36B
Shares
48.44M
The company's filings as submitted to the SEC's EDGAR system — 10-K, 10-Q, 8-K, proxy statements and more — listed most recent first.
| Type | Filing Date | Period | Open |
|---|---|---|---|
| 10-Q | 2026-08-05 | 2026-06-30 | |
| 8-K | 2026-08-05 | 2026-07-31 | |
| DEF 14A | 2026-06-18 | 2026-07-31 | |
| 8-K | 2026-06-02 | 2026-06-01 | |
| 10-K | 2026-05-27 | 2026-03-31 | |
| 8-K | 2026-05-27 | — | |
| 8-K/A | 2026-02-17 | 2025-12-05 | |
| 8-K | 2026-02-04 | — | |
| 10-Q | 2026-02-04 | 2025-12-31 | |
| 8-K | 2025-12-23 | — | |
| 8-K | 2025-12-10 | 2025-12-05 | |
| 10-Q | 2025-11-05 | 2025-09-30 | |
| 8-K | 2025-11-05 | — | |
| 10-Q | 2025-07-30 | 2025-06-30 | |
| 8-K | 2025-07-30 | — | |
| 8-K | 2025-07-29 | 2025-07-25 | |
| DEF 14A | 2025-06-13 | 2025-07-25 | |
| 8-K | 2025-06-11 | 2025-06-10 | |
| 8-K | 2025-05-21 | 2025-05-15 | |
| 10-K | 2025-05-21 | 2025-03-31 | |
| 8-K | 2025-02-05 | 2025-01-30 | |
| 10-Q | 2025-02-05 | 2024-12-31 | |
| 10-Q | 2024-10-30 | 2024-09-30 | |
| 8-K | 2024-10-30 | — | |
| 8-K | 2024-08-13 | 2024-08-12 | |
| 8-K/A | 2024-08-06 | 2024-08-01 | |
| 10-Q | 2024-08-06 | 2024-06-30 | |
| 8-K | 2024-08-06 | — | |
| 8-K | 2024-08-05 | 2024-08-02 | |
| 8-K | 2024-08-05 | 2024-08-01 | |
| DEF 14A | 2024-06-20 | 2024-08-02 | |
| 8-K | 2024-05-29 | 2024-05-23 | |
| 10-K | 2024-05-29 | 2024-03-31 | |
| 8-K | 2024-01-31 | 2024-01-30 | |
| 10-Q | 2024-01-24 | 2023-12-31 | |
| 8-K | 2024-01-24 | — | |
| 8-K | 2023-11-01 | — | |
| 10-Q | 2023-11-01 | 2023-09-30 | |
| 8-K | 2023-08-11 | — | |
| 8-K | 2023-08-09 | — | |
| 10-Q | 2023-08-09 | 2023-06-30 | |
| DEF 14A | 2023-06-28 | 2023-08-11 | |
| 8-K | 2023-06-21 | 2023-06-15 | |
| 10-K | 2023-05-31 | 2023-03-31 | |
| 8-K | 2023-05-31 | — | |
| 8-K | 2023-02-01 | — | |
| 10-Q | 2023-02-01 | 2022-12-31 | |
| 10-Q | 2022-11-01 | 2022-09-30 | |
| 8-K | 2022-11-01 | — | |
| 8-K | 2022-08-05 | 2022-08-02 |
Showing 1–50 of 89 filings
Key facts
CIK
880807
CUSIP
030111207
13F (30d)
13 filings
11 filers
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