AMERICAN SUPERCONDUCTOR CORP /DE/ — SC 13G Filings
39 SC 13G filings on record
This page lists all SC 13G 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 39 SC 13G 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 |
|---|---|---|---|---|
| SC 13G | — | 0002012383-24-003644 | Nov 8, 2024 | — |
| SC 13G | — | 0000932471-24-000274 | Nov 4, 2024 | — |
| SC 13G | — | 0002012383-24-001660 | Oct 22, 2024 | — |
| SC 13G | AMSC 13G | 0001535264-23-000010 | Feb 14, 2023 | — |
| SC 13G | — | 0000906304-23-000063 | Jan 31, 2023 | — |
| SC 13G | — | 0000834237-22-010258 | Jul 8, 2022 | — |
| SC 13G | SC 13G | 0001193125-22-039174 | Feb 14, 2022 | — |
| SC 13G | — | 0001088875-22-000017 | Jan 18, 2022 | — |
| SC 13G | SEC SCHEDULE 13G | 0000914208-21-000296 | Feb 16, 2021 | — |
| SC 13G | — | 0001037389-20-000006 | Feb 12, 2020 | — |
| SC 13G | — | 0000834237-20-008226 | Feb 7, 2020 | — |
| SC 13G | SC 13G | 0001193125-20-015377 | Jan 27, 2020 | — |
| SC 13G | — | 0001319244-19-000055 | Jun 24, 2019 | — |
| SC 13G | SC 13G | 0001193125-19-041082 | Feb 14, 2019 | — |
| SC 13G | REPORT OF ACQUISITION OF BENEFICIAL OWNERSHIP | 0001387131-19-000975 | Feb 8, 2019 | — |
| SC 13G | ACQUISITION OF BENEFICIAL OWNERSHIP | 0001387131-18-005313 | Oct 5, 2018 | — |
| SC 13G | SC 13G | 0001193125-18-073935 | Mar 8, 2018 | — |
| SC 13G | AMERICAN SUPERCONDUCTOR 13G | 0001535264-18-000030 | Feb 13, 2018 | — |
| SC 13G | SCHEDULE 13G | 0001019056-17-000431 | May 8, 2017 | — |
| SC 13G | SC 13G | 0001193125-16-461405 | Feb 12, 2016 | — |
| SC 13G | AMERICAN SUPERCONDUCTOR 13G | 0001535264-16-000125 | Feb 11, 2016 | — |
| SC 13G | — | 0001086364-14-000254 | Jan 28, 2014 | — |
| SC 13G | SC 13G | 0001104659-12-086858 | Dec 31, 2012 | — |
| SC 13G | DOC ONE | 0000315066-10-001396 | Feb 16, 2010 | — |
| SC 13G | DOC ONE | 0000315066-07-003744 | Nov 13, 2007 | — |
| SC 13G | SCHEDULE 13G | 0000950129-07-000686 | Feb 14, 2007 | — |
| SC 13G | AMERICAN SUPERCONDUCTOR | 0000065103-06-000302 | Oct 10, 2006 | — |
| SC 13G | SCHEDULE 13G | 0000950134-06-014745 | Aug 4, 2006 | — |
| SC 13G | AMERICAN SUPERCONDUCTOR CORP. | 0000065103-05-000053 | Nov 8, 2005 | — |
| SC 13G | — | 0001273960-05-000007 | Feb 11, 2005 | — |
| SC 13G | AMERICANSUPERCONDUCTOR | 0000912938-05-000134 | Feb 4, 2005 | — |
| SC 13G | AMERICAN_SUPERCONDUCTOR | 0000912938-04-000152 | Feb 11, 2004 | — |
| SC 13G | AMERICAN SUPERCONDUCTOR CORPORATION | 0000912938-03-000498 | Nov 10, 2003 | — |
| SC 13G | SCHEDULE 13G | 0000898430-03-001127 | Feb 11, 2003 | — |
| SC 13G | FRONTIER CAPITAL MGT FOR AMERICAN SUPERCONDUCTOR | 0000950135-00-000901 | Feb 15, 2000 | — |
| SC 13G | — | 0000949308-00-000057 | Feb 11, 2000 | — |
| SC 13G | AMERICAN SUPERCONDUCTOR CO. | 0000950128-99-000212 | Feb 2, 1999 | — |
| SC 13G | SCHEDULE 13G RE AMERICAN SUPERCONDUCTOR | 0000921530-98-000026 | Mar 6, 1998 | — |
| SC 13G | SCHEDULE 13G -02-14-97 - AMERICAN SUPERCONDUCTOR CORPORATION | 0000315066-97-000166 | Feb 10, 1997 | — |