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 1,321 SEC EDGAR filings since 29 Jul 1996

SEC filing history

Showing 1-25 of 857 matching filings.

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25
Current page
1
ARS File 000-19672

ARS

Filing date
18 Jun 2026
Reporting date
31 Mar 2026
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DEFA14A File 000-19672

DEFA14A

Filing date
18 Jun 2026
Reporting date
Not listed
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DEF 14A File 000-19672

DEF 14A

Filing date
18 Jun 2026
Reporting date
31 Jul 2026
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4

4

Filing date
12 Jun 2026
Reporting date
11 Jun 2026
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144 File 000-19672

144 filing

Filing date
11 Jun 2026
Reporting date
Not listed
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4

4

Filing date
11 Jun 2026
Reporting date
11 Jun 2026
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4

4

Filing date
11 Jun 2026
Reporting date
11 Jun 2026
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144 File 000-19672

144 filing

Filing date
11 Jun 2026
Reporting date
Not listed
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4

4

Filing date
10 Jun 2026
Reporting date
08 Jun 2026
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4

4

Filing date
10 Jun 2026
Reporting date
08 Jun 2026
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144 File 000-19672

144 filing

Filing date
10 Jun 2026
Reporting date
Not listed
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144 File 000-19672

144 filing

Filing date
08 Jun 2026
Reporting date
Not listed
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144 File 000-19672

144 filing

Filing date
08 Jun 2026
Reporting date
Not listed
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144 File 000-19672

144 filing

Filing date
03 Jun 2026
Reporting date
Not listed
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144 File 000-19672

144 filing

Filing date
03 Jun 2026
Reporting date
Not listed
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4

4

Filing date
03 Jun 2026
Reporting date
01 Jun 2026
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4

4

Filing date
03 Jun 2026
Reporting date
01 Jun 2026
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144 File 000-19672

144 filing

Filing date
02 Jun 2026
Reporting date
Not listed
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144 File 000-19672

144 filing

Filing date
02 Jun 2026
Reporting date
Not listed
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SD File 000-19672

FORM SD

Filing date
29 May 2026
Reporting date
Not listed
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SCHEDULE 13G File 005-41994

SCHEDULE 13G filing

Filing date
29 Apr 2026
Reporting date
Not listed
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4

4

Filing date
07 Apr 2026
Reporting date
03 Apr 2026
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