Company facts
- Industry
- Motors & Generators
- Headquarters
- Devens, Massachusetts
- Most recent report
- 10-Q, filed Aug 5, 2026
- Incorporated
- Delaware
- Filings on record
- 1,000+ filings
- On EDGAR
- CIK 880807
- Fiscal year ends
- March
- Filer status
- Large accelerated filer
Financials 8 of 80
News 8 of 208
Prospectuses and Registrations 8 of 51
- 424B5 Prospectus supplement for an offering Jun 11, 2025
- 424B5 Prospectus supplement for an offering Jun 10, 2025
- S-8 Registration statement for an employee plan Aug 28, 2024
- S-3ASR Automatic shelf registration Aug 12, 2024
- S-3/A Shelf registration statement, amended Mar 8, 2024
- 424B5 Prospectus supplement for an offering Jan 31, 2024
- 424B5 Prospectus supplement for an offering Jan 30, 2024
- S-3 Shelf registration statement Jan 30, 2024
Proxies 8 of 43
- DEFA14A Extra proxy material Jun 18, 2026
- DEF 14A Proxy statement for a shareholder vote Jun 18, 2026
- DEFA14A Extra proxy material Jun 13, 2025
- DEF 14A Proxy statement for a shareholder vote Jun 13, 2025
- DEFA14A Extra proxy material Jun 20, 2024
- DEF 14A Proxy statement for a shareholder vote Jun 20, 2024
- PRE 14A Preliminary proxy statement Jun 10, 2024
- DEFA14A Extra proxy material Jun 28, 2023
Ownership 8 of 541
- SCHEDULE 13G/A Large holder reported a passive stake, amended Jul 31, 2026
- 4 Insider reported a trade Jun 12, 2026
- 144 Notice of a proposed sale of restricted stock Jun 11, 2026
- 4 Insider reported a trade Jun 11, 2026
- 4 Insider reported a trade Jun 11, 2026
- 144 Notice of a proposed sale of restricted stock Jun 11, 2026
- 4 Insider reported a trade Jun 10, 2026
- 4 Insider reported a trade Jun 10, 2026
Other 8 of 77
- ARS Annual report sent to shareholders Jun 18, 2026
- SD Conflict minerals disclosure May 29, 2026
- 424B7 Dec 23, 2025
- ARS Annual report sent to shareholders Jun 13, 2025
- SD Conflict minerals disclosure May 21, 2025
- 424B7 Aug 12, 2024
- ARS Annual report sent to shareholders Jun 20, 2024
- SD Conflict minerals disclosure May 28, 2024
Everything here comes from American Superconductor Corp's own filings on SEC EDGAR. The filing list is rechecked every hour.