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American Superconductor Corp /DE/(AMSC US)

$24.13-0.913.63%Ext:$23.85-0.281.15%(Market Closed · 01:00:00 UTC)

Doc Search Profile Entity StructureFinancials Charting Short Interest Employees

Overview

Profile Entity Structure

Documents

Categorized Chronological By Owner

Financials & Metrics

Financials Charting Short Interest Employees

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Home Stock Screener Document Search Charting Watchlists Recent Filings

American Superconductor Corp /DE/(AMSC US)

$24.13-0.913.63%Ext:$23.85-0.281.15%(Market Closed · 01:00:00 UTC)

Doc Search Profile Entity StructureFinancials Charting Short Interest Employees

Overview

Profile Entity Structure

Documents

Categorized Chronological By Owner

Financials & Metrics

Financials Charting Short Interest Employees

AMSC US

AMSC US

Chronological SEC Filings

Chronological SEC Filings

Non-Ownership Filings(624)

10-QQ2ended 30 Sept 20264 Nov
8-KResults of Operations and Financial Condition4 Nov
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

Ownership Filings(699)

Form 4Littlefield Barbara G.21 Sep
SC 13G/AAMERICAN SUPERCONDUCTOR CORP /DE/31 Jul
Form 4Dambier Laura A.12 Jun
Form 144Kosiba John W JR11 Jun
Form 4Kosiba John W JR11 Jun
Form 4McGahn Daniel P11 Jun
Form 144McGahn Daniel P11 Jun
Form 4Kosiba John W JR10 Jun
Form 4McGahn Daniel P10 Jun
Form 144Dambier Laura A.10 Jun
Form 144Kosiba John W JR8 Jun
Form 144McGahn Daniel P8 Jun
Form 144McGahn Daniel P3 Jun
Form 144Kosiba John W JR3 Jun
Form 4Kosiba John W JR3 Jun
Form 4McGahn Daniel P3 Jun
Form 144Kosiba John W JR2 Jun
Form 144McGahn Daniel P2 Jun
SC 13GAMERICAN SUPERCONDUCTOR CORP /DE/29 Apr
Form 4Donnelly Terence Robert7 Apr

Non-Ownership Filings(624)

10-QQ2ended 30 Sept 20264 Nov
8-KResults of Operations and Financial Condition4 Nov
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

Ownership Filings(699)

Form 4Littlefield Barbara G.21 Sep
SC 13G/AAMERICAN SUPERCONDUCTOR CORP /DE/31 Jul
Form 4Dambier Laura A.12 Jun
Form 144Kosiba John W JR11 Jun
Form 4Kosiba John W JR11 Jun
Form 4McGahn Daniel P11 Jun
Form 144McGahn Daniel P11 Jun
Form 4Kosiba John W JR10 Jun
Form 4McGahn Daniel P10 Jun
Form 144Dambier Laura A.10 Jun
Form 144Kosiba John W JR8 Jun
Form 144McGahn Daniel P8 Jun
Form 144McGahn Daniel P3 Jun
Form 144Kosiba John W JR3 Jun
Form 4Kosiba John W JR3 Jun
Form 4McGahn Daniel P3 Jun
Form 144Kosiba John W JR2 Jun
Form 144McGahn Daniel P2 Jun
SC 13GAMERICAN SUPERCONDUCTOR CORP /DE/29 Apr
Form 4Donnelly Terence Robert7 Apr