AMERICAN SUPERCONDUCTOR CORP /DE/ — DEF 14A Filings
31 DEF 14A filings on record
This page lists all DEF 14A filings submitted to the SEC by AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC), sorted by most recent first. Each row links to the full filing on EdgarLookup. AMERICAN SUPERCONDUCTOR CORP /DE/ has filed 31 DEF 14A documents with the SEC since 2007. To view all SEC filings by AMERICAN SUPERCONDUCTOR CORP /DE/, see the full filings list.
All
10-K
10-K/A
10-Q
10-Q/A
144
3
3/A
4
4/A
424B1
424B2
424B3
424B4
424B5
424B7
5
8-A12G
8-A12G/A
8-K
8-K/A
ARS
CORRESP
CT ORDER
D
DEF 14A
DEFA14A
DEFR14A
EFFECT
FWP
NT 10-K
NT 10-Q
POS AM
POSASR
PRE 14A
S-1
S-3
S-3/A
S-3ASR
S-3MEF
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEF 14A | DEF 14A | 0001193125-25-140726 | Jun 13, 2025 | Jul 25, 2025 |
| DEF 14A | DEF 14A | 0001193125-24-164444 | Jun 20, 2024 | Aug 2, 2024 |
| DEF 14A | DEF 14A | 0001193125-23-177510 | Jun 28, 2023 | Aug 11, 2023 |
| DEF 14A | DEF 14A | 0001193125-22-180073 | Jun 23, 2022 | Aug 2, 2022 |
| DEF 14A | DEF 14A | 0001193125-21-193232 | Jun 17, 2021 | Jul 30, 2021 |
| DEF 14A | DEF 14A | 0001193125-20-174030 | Jun 19, 2020 | Jul 31, 2020 |
| DEF 14A | DEF 14A | 0001193125-19-177535 | Jun 20, 2019 | Aug 1, 2019 |
| DEF 14A | DEF 14A | 0001193125-18-194400 | Jun 15, 2018 | Jul 27, 2018 |
| DEF 14A | DEF 14A | 0001193125-17-205545 | Jun 16, 2017 | Jul 27, 2017 |
| DEF 14A | DEF 14A | 0001193125-16-625011 | Jun 17, 2016 | Jul 29, 2016 |
| DEF 14A | DEF 14A | 0001193125-15-228716 | Jun 19, 2015 | Jul 31, 2015 |
| DEF 14A | DEF 14A | 0001193125-15-037115 | Feb 6, 2015 | Mar 18, 2015 |
| DEF 14A | NOTICE & PROXY | 0001193125-14-241079 | Jun 18, 2014 | Aug 1, 2014 |
| DEF 14A | DEF 14A | 0001193125-13-262783 | Jun 18, 2013 | Aug 1, 2013 |
| DEF 14A | DEF 14A | 0001193125-12-283889 | Jun 26, 2012 | Jul 27, 2012 |
| DEF 14A | DEF 14A | 0000950123-11-095267 | Nov 4, 2011 | Dec 8, 2011 |
| DEF 14A | AMERICAN SUPERCONDUCTOR CORPORATION | 0000950123-10-059955 | Jun 22, 2010 | Aug 6, 2010 |
| DEF 14A | DEF 14A | 0001193125-09-134928 | Jun 22, 2009 | Aug 6, 2009 |
| DEF 14A | DEF 14A | 0001193125-08-138231 | Jun 23, 2008 | Aug 7, 2008 |
| DEF 14A | DEF14A | 0001193125-07-148390 | Jul 2, 2007 | Aug 3, 2007 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-06-134584 | Jun 23, 2006 | Jul 27, 2006 |
| DEF 14A | DEFINITIVE NOTICE AND PROXY STATEMENT | 0001193125-05-130657 | Jun 24, 2005 | Jul 28, 2005 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-04-107824 | Jun 24, 2004 | Jul 29, 2004 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-03-046346 | Sep 8, 2003 | Oct 1, 2003 |
| DEF 14A | NOTICE AND PROXY STATEMENT | 0000927016-02-003376 | Jun 25, 2002 | Jul 26, 2002 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0000927016-01-501689 | Jun 27, 2001 | Jul 27, 2001 |
| DEF 14A | NOTICE & PROXY STATEMENT | 0000927016-00-002304 | Jun 27, 2000 | Jul 28, 2000 |
| DEF 14A | NOTICE AND PROXY | 0000927016-99-002456 | Jun 25, 1999 | Jul 29, 1999 |
| DEF 14A | AMERICAN SUPERCONDUCTOR | 0000950135-98-003969 | Jun 24, 1998 | Jul 29, 1998 |
| DEF 14A | AMERICAN SUPERCONDUCTOR CORPORATION | 0000950135-97-003145 | Jul 29, 1997 | Sep 5, 1997 |
| DEF 14A | AMERICAN SUPERCONDUCTOR CORP NOTICE AND PROXY | 0000950135-96-003221 | Jul 29, 1996 | Sep 6, 1996 |