AMERICAN SUPERCONDUCTOR CORP /DE/ reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Devens, MA
SEC filing record 1 source field available
Fiscal year end
31 March
AMERICAN SUPERCONDUCTOR CORP /DE/ has filed 1,322 SEC EDGAR filings since 29 Jul 1996

SEC filing history

Showing 26-50 of 858 matching filings.

Per page
25
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2
4

4

Filing date
07 Apr 2026
Reporting date
03 Apr 2026
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4

Filing date
07 Apr 2026
Reporting date
03 Apr 2026
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4

4

Filing date
07 Apr 2026
Reporting date
03 Apr 2026
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4

4

Filing date
07 Apr 2026
Reporting date
03 Apr 2026
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4

4

Filing date
07 Apr 2026
Reporting date
03 Apr 2026
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4

4

Filing date
07 Apr 2026
Reporting date
03 Apr 2026
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SCHEDULE 13G/A File 005-41994

SCHEDULE 13G/A filing

Filing date
26 Mar 2026
Reporting date
Not listed
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4

4

Filing date
26 Feb 2026
Reporting date
24 Feb 2026
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8-K/A File 000-19672

FORM 8-K/A

Filing date
17 Feb 2026
Reporting date
05 Dec 2025
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SCHEDULE 13G/A File 005-41994

SCHEDULE 13G/A filing

Filing date
30 Jan 2026
Reporting date
Not listed
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4

4

Filing date
13 Nov 2025
Reporting date
18 Jun 2019
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144 File 000-19672

144 filing

Filing date
08 Aug 2025
Reporting date
Not listed
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4

4

Filing date
08 Aug 2025
Reporting date
06 Aug 2025
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4

4

Filing date
06 Aug 2025
Reporting date
04 Aug 2022
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4

4

Filing date
06 Aug 2025
Reporting date
04 Aug 2025
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4

4

Filing date
06 Aug 2025
Reporting date
04 Aug 2025
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144 File 000-19672

144 filing

Filing date
04 Aug 2025
Reporting date
Not listed
SEC evidence
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144 File 000-19672

144 filing

Filing date
04 Aug 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
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