AMERICAN SUPERCONDUCTOR CORP /DE/ — All Filings
1,000 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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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 |
|---|---|---|---|---|
| 4 | 4 | 0000950170-25-074461 | May 19, 2025 | May 15, 2025 |
| SCHEDULE 13G/A | — | 0001576419-25-000693 | Apr 17, 2025 | — |
| 4 | 4 | 0000950170-25-051168 | Apr 4, 2025 | Apr 3, 2025 |
| 4 | 4 | 0000950170-25-051183 | Apr 4, 2025 | Apr 3, 2025 |
| 4 | 4 | 0000950170-25-051189 | Apr 4, 2025 | Apr 3, 2025 |
| 4 | 4 | 0000950170-25-051186 | Apr 4, 2025 | Apr 3, 2025 |
| 4 | 4 | 0000950170-25-051187 | Apr 4, 2025 | Apr 3, 2025 |
| SCHEDULE 13G/A | — | 0001088875-25-000024 | Feb 12, 2025 | — |
| 10-Q | FORM 10-Q | 0001437749-25-002900 | Feb 5, 2025 | Dec 31, 2024 |
| 8-K | FORM 8-K | 0001437749-25-002901 | Feb 5, 2025 | Jan 30, 2025 |
| SCHEDULE 13G/A | — | 0002012383-25-001507 | Feb 5, 2025 | — |
| SC 13G/A | — | 0000932471-24-000909 | Nov 12, 2024 | — |
| SC 13G | — | 0002012383-24-003644 | Nov 8, 2024 | — |
| 4 | 4 | 0000950170-24-122413 | Nov 6, 2024 | Nov 4, 2024 |
| 144 | — | 0001972362-24-001482 | Nov 5, 2024 | — |
| SC 13G | — | 0000932471-24-000274 | Nov 4, 2024 | — |
| SCHEDULE 13G/A | — | 0001088875-24-000106 | Nov 4, 2024 | — |
| 8-K | FORM 8-K | 0001437749-24-032617 | Oct 30, 2024 | — |
| 10-Q | FORM 10-Q | 0001437749-24-032618 | Oct 30, 2024 | Sep 30, 2024 |
| SC 13G | — | 0002012383-24-001660 | Oct 22, 2024 | — |
| 4 | 4 | 0000950170-24-110883 | Oct 1, 2024 | Sep 30, 2024 |
| 4 | 4 | 0000950170-24-110427 | Sep 30, 2024 | Sep 26, 2024 |
| S-8 | S-8 | 0001193125-24-208843 | Aug 28, 2024 | — |
| 8-K | 8-K | 0001193125-24-199141 | Aug 13, 2024 | Aug 12, 2024 |
| 424B7 | 424B7 | 0001193125-24-199010 | Aug 12, 2024 | — |
| S-3ASR | S-3ASR | 0001193125-24-198982 | Aug 12, 2024 | — |
| SC 13G/A | AMSC 13G/A | 0001535264-24-000048 | Aug 9, 2024 | — |
| 8-K | FORM 8-K | 0001437749-24-024881 | Aug 6, 2024 | — |
| 10-Q | FORM 10-Q | 0001437749-24-024886 | Aug 6, 2024 | Jun 30, 2024 |
| 8-K/A | FORM 8-K/A | 0001437749-24-024924 | Aug 6, 2024 | Aug 1, 2024 |
| 8-K | 8-K | 0001193125-24-193965 | Aug 5, 2024 | Aug 2, 2024 |
| 8-K | 8-K | 0001193125-24-193425 | Aug 5, 2024 | Aug 1, 2024 |
| ARS | ARS | 0001193125-24-164457 | Jun 20, 2024 | Mar 31, 2024 |
| DEFA14A | DEFA14A | 0001193125-24-164450 | Jun 20, 2024 | — |
| DEF 14A | DEF 14A | 0001193125-24-164444 | Jun 20, 2024 | Aug 2, 2024 |
| 4 | 4 | 0000950170-24-072272 | Jun 12, 2024 | Jun 11, 2024 |
| 4 | 4 | 0000950170-24-072273 | Jun 12, 2024 | Jun 11, 2024 |
| 144 | — | 0001950047-24-004598 | Jun 11, 2024 | — |
| 144 | — | 0001950047-24-004595 | Jun 11, 2024 | — |
| PRE 14A | PRE 14A | 0001193125-24-158370 | Jun 10, 2024 | Aug 2, 2024 |
| 10-K | FORM 10-K | 0001437749-24-018602 | May 29, 2024 | Mar 31, 2024 |
| 8-K | FORM 8-K | 0001437749-24-018599 | May 29, 2024 | May 23, 2024 |
| SD | FORM SD | 0001437749-24-018462 | May 28, 2024 | — |
| 4 | 4 | 0000950170-24-063979 | May 23, 2024 | May 21, 2024 |
| 4 | 4 | 0000950170-24-063992 | May 23, 2024 | May 21, 2024 |
| 144 | — | 0001950047-24-003981 | May 21, 2024 | — |
| 144 | — | 0001950047-24-003982 | May 21, 2024 | — |
| 4 | 4 | 0000950170-24-041901 | Apr 4, 2024 | Apr 3, 2024 |
| 4 | 4 | 0000950170-24-041899 | Apr 4, 2024 | Apr 3, 2024 |
| 4 | 4 | 0000950170-24-041903 | Apr 4, 2024 | Apr 3, 2024 |