AMERICAN SUPERCONDUCTOR CORP /DE/ — SC 13G/A Filings
63 SC 13G/A filings on record
This page lists all SC 13G/A 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 63 SC 13G/A 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/A | — | 0000932471-24-000909 | Nov 12, 2024 | — |
| SC 13G/A | AMSC 13G/A | 0001535264-24-000048 | Aug 9, 2024 | — |
| SC 13G/A | AMSC 13G/A | 0001535264-24-000022 | Feb 14, 2024 | — |
| SC 13G/A | — | 0001088875-24-000058 | Jan 30, 2024 | — |
| SC 13G/A | — | 0000906304-24-000048 | Jan 30, 2024 | — |
| SC 13G/A | — | 0001088875-23-000092 | Jul 5, 2023 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000914208-23-000148 | Feb 8, 2023 | — |
| SC 13G/A | — | 0001088875-23-000021 | Jan 19, 2023 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000914208-22-000128 | Feb 9, 2022 | — |
| SC 13G/A | — | 0000834237-22-004577 | Feb 1, 2022 | — |
| SC 13G/A | — | 0001037389-21-000063 | Feb 10, 2021 | — |
| SC 13G/A | — | 0000834237-21-003046 | Jan 29, 2021 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR 13G/A | 0001535264-21-000002 | Jan 8, 2021 | — |
| SC 13G/A | SC 13G/A | 0001193125-20-174006 | Jun 19, 2020 | — |
| SC 13G/A | SC 13G/A | 0001193125-20-033720 | Feb 13, 2020 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR 13G/A | 0001535264-20-000013 | Feb 12, 2020 | — |
| SC 13G/A | — | 0001319244-20-000033 | Feb 4, 2020 | — |
| SC 13G/A | SCHEDULE 13G/A (AMENDMENT NO. 1) | 0001193125-19-038123 | Feb 13, 2019 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR 13G/A | 0001535264-19-000027 | Feb 13, 2019 | — |
| SC 13G/A | AMENDMENT TO FORM SC 13G | 0001387131-19-000995 | Feb 8, 2019 | — |
| SC 13G/A | SC 13G/A | 0001019056-18-000230 | Jan 26, 2018 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR | 0001535264-17-000069 | Sep 8, 2017 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR 13G/A | 0001535264-17-000007 | Feb 10, 2017 | — |
| SC 13G/A | SC 13G/A | 0001104659-15-009932 | Feb 13, 2015 | — |
| SC 13G/A | — | 0001086364-14-002377 | Jul 10, 2014 | — |
| SC 13G/A | SC 13G/A | 0001104659-14-009518 | Feb 13, 2014 | — |
| SC 13G/A | — | 0001086364-13-004382 | Dec 10, 2013 | — |
| SC 13G/A | SC 13G/A | 0001104659-13-010050 | Feb 13, 2013 | — |
| SC 13G/A | — | 0001305227-13-000331 | Feb 8, 2013 | — |
| SC 13G/A | — | 0001086364-12-001923 | Feb 13, 2012 | — |
| SC 13G/A | — | 0001086364-11-005094 | Aug 8, 2011 | — |
| SC 13G/A | DOC ONE | 0000315066-11-003591 | Jun 10, 2011 | — |
| SC 13G/A | DOC ONE | 0000315066-11-002232 | Feb 14, 2011 | — |
| SC 13G/A | — | 0000935836-11-000014 | Feb 11, 2011 | — |
| SC 13G/A | — | 0001086364-11-000126 | Jan 10, 2011 | — |
| SC 13G/A | SCHEDULE 13G/A | 0000950123-10-022114 | Mar 8, 2010 | — |
| SC 13G/A | SCHEDULE 13G/A | 0000950123-10-006335 | Jan 29, 2010 | — |
| SC 13G/A | — | 0001086364-10-000289 | Jan 8, 2010 | — |
| SC 13G/A | SCHEDULE 13G/A | 0000950134-09-011066 | May 19, 2009 | — |
| SC 13G/A | AMENDMENT TO SCHEDULE 13G | 0000950134-09-002890 | Feb 17, 2009 | — |
| SC 13G/A | DOC ONE | 0000315066-09-001450 | Feb 17, 2009 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR CORP. | 0000914208-09-000242 | Feb 12, 2009 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR CORP | 0001086364-09-000027 | Feb 10, 2009 | — |
| SC 13G/A | DOC ONE | 0000315066-08-004219 | Nov 10, 2008 | — |
| SC 13G/A | DOC ONE | 0000315066-08-001448 | Feb 14, 2008 | — |
| SC 13G/A | AMENDMENT TO SCHEDULE 13G | 0000950129-08-000847 | Feb 13, 2008 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR | 0001086364-08-000066 | Feb 8, 2008 | — |
| SC 13G/A | AMENDMENT TO SCHEDULE 13G | 0000950134-08-001908 | Feb 7, 2008 | — |
| SC 13G/A | AMENDMENT NO. 1 TO SCHEDULE 13G | 0000950134-07-003256 | Feb 14, 2007 | — |
| SC 13G/A | AMERICAN SUPERCONDUCTOR | 0000065103-07-000068 | Feb 13, 2007 | — |