AMSC - Company ID 0000880807
AMERICAN SUPERCONDUCTOR CORP /DE/ has filed 1,296 public company documents between 1996 and 2026. The most frequent type is insider trade (505 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| 8-K/A | Major company event (amended) | 4mo ago2026-02-17 | 2025-12-05 | View filing |
| 8-K/A | Major company event (amended) | 1y ago2024-08-06 | 2024-08-01 | View filing |
| 8-K/A | Major company event (amended) | 5y ago2020-12-14 | 2020-10-01 | View filing |
| 8-K/A | Major company event (amended) | 9y ago2017-05-25 | 2017-05-25 | View filing |
| 8-K/A | Major company event (amended) | 14y ago2012-02-06 | 2011-12-08 | View filing |
| 8-K/A | Major company event (amended) | 15y ago2010-09-15 | 2010-05-12 | View filing |
| 8-K/A | Major company event (amended) | 19y ago2007-06-14 | 2007-01-05 | View filing |
| 8-K/A | Major company event (amended) | 19y ago2007-03-23 | 2007-01-05 | View filing |
| 8-K/A | Major company event (amended) | 21y ago2004-11-09 | 2004-11-09 | View filing |
| 8-K/A | Major company event (amended) | 29y ago1997-06-23 | 1997-04-08 | View filing |