American Superconductor Corporation

AMSC

Financials

10-QQ1 ended 06/30/2608/05/26 10-KFY 202605/27/26 10-QQ3 ended 12/31/2502/04/26 10-QQ2 ended 09/30/2511/05/25 10-QQ1 ended 06/30/2507/30/25

Disclosures

8-KCurrent report09/21/26 8-KCurrent report08/05/26 8-KCurrent report06/02/26 8-KCurrent report05/27/26 8-K/ACurrent report (amended)02/17/26

Prospectuses and Registrations

424B7Prospectus12/23/25 424B5Prospectus supplement06/11/25 424B5Prospectus supplement06/10/25 S-8Registration of securities for employees08/28/24 424B7Prospectus08/12/24

Proxies

DEF 14ADefinitive proxy06/18/26 DEFA14AAdditional proxy materials06/18/26 DEF 14ADefinitive proxy06/13/25 DEFA14AAdditional proxy materials06/13/25 DEF 14ADefinitive proxy06/20/24

Ownership

Form 4Insider transaction09/21/26 SC 13G/ABeneficial ownership (amended)07/31/26 Form 4Insider transaction06/12/26 144Proposed sale of securities06/11/26 144Proposed sale of securities06/11/26

Other

ARSAnnual report to shareholders06/18/26 SDConflict Minerals disclosure05/29/26 ARSAnnual report to shareholders06/13/25 SDConflict Minerals disclosure05/21/25 ARSAnnual report to shareholders06/20/24