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AMSC US​

American Superconductor Corp /DE/(AMSC US)

$25.12+0.110.44%Ext:$25.09-0.030.13%(Market Closed · 23:43:45 UTC)

Overview

ProfileEntity Structure

Documents

SEC Filings
CategorizedChronologicalBy Owner

Financials & Metrics

FinancialsChartingShort InterestEmployees

Chronological SEC Filings

Non-Ownership Filings(622)

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  • 8-KDeparture of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers21 Sep
  • 10-QQ1ended 30 Jun 20265 Aug
  • 8-KResults of Operations and Financial Condition5 Aug
  • ARSAnnual report to security holders18 Jun
  • DEFA14ADefinitive additional materials18 Jun
  • DEF 14ADefinitive proxy statement18 Jun
  • 8-KDeparture of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers2 Jun
  • SDSD29 May
  • 10-KFY 2026ended 31 Mar 202627 May
  • 8-KResults of Operations and Financial Condition27 May
  • 8-K/AFinancial Statements and Exhibits17 Feb
  • 10-QQ3ended 31 Dec 20254 Feb
  • 8-KResults of Operations and Financial Condition4 Feb
  • 8-KOther Events23 Dec 2025
  • 424B7Prospectus filing (Rule 424(b)(7))23 Dec 2025
  • 8-KEntry into a Material Definitive Agreement10 Dec 2025
  • 10-QQ2ended 30 Sept 20255 Nov 2025
  • 8-KResults of Operations and Financial Condition5 Nov 2025
  • 10-QQ1ended 30 Jun 202530 Jul 2025
  • 8-KResults of Operations and Financial Condition30 Jul 2025

Ownership Filings(699)

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  • 4Statement of changes in beneficial ownership21 Sep
  • SC 13G/AAMERICAN SUPERCONDUCTOR CORP /DE/31 Jul
  • 4Statement of changes in beneficial ownership12 Jun
  • 144Kosiba John W JR11 Jun
  • 4Statement of changes in beneficial ownership11 Jun
  • 4Statement of changes in beneficial ownership11 Jun
  • 144McGahn Daniel P11 Jun
  • 4Statement of changes in beneficial ownership10 Jun
  • 4Statement of changes in beneficial ownership10 Jun
  • 144Dambier Laura A.10 Jun
  • 144Kosiba John W JR8 Jun
  • 144McGahn Daniel P8 Jun
  • 144McGahn Daniel P3 Jun
  • 144Kosiba John W JR3 Jun
  • 4Statement of changes in beneficial ownership3 Jun
  • 4Statement of changes in beneficial ownership3 Jun
  • 144Kosiba John W JR2 Jun
  • 144McGahn Daniel P2 Jun
  • SC 13GAMERICAN SUPERCONDUCTOR CORP /DE/29 Apr
  • 4Statement of changes in beneficial ownership7 Apr