AMERICAN SUPERCONDUCTOR CORP /DE/ — 424B5 Filings
19 424B5 filings on record
This page lists all 424B5 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 19 424B5 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 |
|---|---|---|---|---|
| 424B5 | 424B5 | 0001193125-25-139239 | Jun 11, 2025 | — |
| 424B5 | 424B5 | 0001193125-25-138450 | Jun 10, 2025 | — |
| 424B5 | 424B5 | 0001193125-24-021029 | Jan 31, 2024 | — |
| 424B5 | 424B5 | 0001193125-24-019438 | Jan 30, 2024 | — |
| 424B5 | 424B5 | 0001193125-20-275422 | Oct 23, 2020 | — |
| 424B5 | 424B5 | 0001193125-20-273637 | Oct 21, 2020 | — |
| 424B5 | 424B5 | 0001193125-17-162830 | May 8, 2017 | — |
| 424B5 | 424B5 | 0001193125-17-158661 | May 4, 2017 | — |
| 424B5 | 424B5 | 0001193125-17-021820 | Jan 27, 2017 | — |
| 424B5 | 424B5 | 0001193125-15-146810 | Apr 24, 2015 | — |
| 424B5 | 424B5 | 0001193125-15-144211 | Apr 23, 2015 | — |
| 424B5 | 424(B)(5) | 0001193125-14-403639 | Nov 7, 2014 | — |
| 424B5 | 424(B)(5) | 0001193125-14-402372 | Nov 7, 2014 | — |
| 424B5 | 424B5 | 0001193125-13-444693 | Nov 18, 2013 | — |
| 424B5 | PROSPECTUS SUPPLEMENT NO. 1 | 0001193125-12-283914 | Jun 26, 2012 | — |
| 424B5 | FORM 424(B)(5) | 0001193125-12-265872 | Jun 11, 2012 | — |
| 424B5 | 424B5 | 0001193125-12-228584 | May 11, 2012 | — |
| 424B5 | 424B5 | 0001193125-12-228542 | May 11, 2012 | — |
| 424B5 | 424B5 | 0000950123-10-102629 | Nov 9, 2010 | — |