AMERICAN SUPERCONDUCTOR CORP /DE/ — SCHEDULE 13G/A Filings
6 SCHEDULE 13G/A filings on record
This page lists all SCHEDULE 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 6 SCHEDULE 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 |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-000605 | Mar 26, 2026 | — |
| SCHEDULE 13G/A | — | 0000102909-26-000102 | Jan 30, 2026 | — |
| SCHEDULE 13G/A | — | 0001576419-25-000693 | Apr 17, 2025 | — |
| SCHEDULE 13G/A | — | 0001088875-25-000024 | Feb 12, 2025 | — |
| SCHEDULE 13G/A | — | 0002012383-25-001507 | Feb 5, 2025 | — |
| SCHEDULE 13G/A | — | 0001088875-24-000106 | Nov 4, 2024 | — |