Company · CIK 880807 # AMERICAN SUPERCONDUCTOR CORP /DE/ | CIK | [880807](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000880807) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 3621 — Motors & Generators | | Incorporated in | DE | | Business address | MA | | Listed | AMSC (Nasdaq) | | First annual or quarterly report | 1996-08-13 | ## Offerings 17 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-281496 | Shelf Effective | 2024-08-12 | 2025-06-11 | 3 | | 333-276766 | Shelf Effective | 2024-01-30 | 2024-03-15 | 2 | | 333-253611 | Shelf Effective | 2021-02-26 | 2024-01-31 | 4 | | 333-222874 | Shelf Effective | 2018-02-05 | 2020-10-23 | 4 | | 333-220784 | Shelf Effective | 2017-10-03 | 2017-10-23 | 2 | | 333-198851 | Shelf Effective | 2014-09-19 | 2017-05-08 | 9 | | 333-191153 | Shelf Effective | 2013-09-13 | 2013-11-18 | 3 | | 333-184780 | Shelf Effective | 2012-11-06 | 2012-11-16 | 2 | | 333-180733 | Registered company Effective | 2012-04-13 | 2012-10-18 | 8 | | 333-184218 | Shelf Effective | 2012-10-01 | 2012-10-18 | 2 | | 333-170455 | Shelf Effective | 2010-11-08 | 2010-11-09 | 2 | | 333-145683 | Shelf Effective | 2007-08-24 | 2007-09-05 | 2 | | 333-143902 | Shelf Effective | 2007-06-20 | 2007-08-31 | 2 | | 333-143903 | Shelf Final prospectus | 2007-06-20 | 2007-07-20 | 3 | | 333-124235 | Shelf Dormant | 2005-04-22 | 2005-04-22 | 1 | | 333-121946 | Shelf Final prospectus | 2005-01-11 | 2005-02-24 | 2 | | 333-108347 | Shelf Final prospectus | 2003-08-29 | 2003-10-03 | 2 | ## Filings 53 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2025-06-11 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312525139239/0001193125-25-139239-index.htm) Shelf takedown | 333-281496 | 0001193125-25-139239 | | 2025-06-10 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312525138450/0001193125-25-138450-index.htm) Shelf takedown | 333-281496 | 0001193125-25-138450 | | 2024-08-12 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/880807/000119312524198982/0001193125-24-198982-index.htm) Shelf registered | 333-281496 | 0001193125-24-198982 | | 2024-03-15 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999524000669/9999999995-24-000669-index.htm) Declared effective | 333-276766 | 9999999995-24-000669 | | 2024-01-31 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312524021029/0001193125-24-021029-index.htm) Shelf takedown | 333-253611 | 0001193125-24-021029 | | 2024-01-30 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312524019438/0001193125-24-019438-index.htm) Shelf takedown | 333-253611 | 0001193125-24-019438 | | 2024-01-30 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312524019425/0001193125-24-019425-index.htm) Shelf registered | 333-276766 | 0001193125-24-019425 | | 2021-06-21 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999521002417/9999999995-21-002417-index.htm) Declared effective | 333-253611 | 9999999995-21-002417 | | 2021-02-26 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/880807/000119312521060535/0001193125-21-060535-index.htm) Shelf registered | 333-253611 | 0001193125-21-060535 | | 2020-10-23 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312520275422/0001193125-20-275422-index.htm) Shelf takedown | 333-222874 | 0001193125-20-275422 | | 2020-10-21 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312520273637/0001193125-20-273637-index.htm) Shelf takedown | 333-222874 | 0001193125-20-273637 | | 2018-02-15 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999518000459/9999999995-18-000459-index.htm) Declared effective | 333-222874 | 9999999995-18-000459 | | 2018-02-05 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312518032227/0001193125-18-032227-index.htm) Shelf registered | 333-222874 | 0001193125-18-032227 | | 2017-10-23 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999517002756/9999999995-17-002756-index.htm) Declared effective | 333-220784 | 9999999995-17-002756 | | 2017-10-03 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312517302230/0001193125-17-302230-index.htm) Shelf registered | 333-220784 | 0001193125-17-302230 | | 2017-05-08 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312517162830/0001193125-17-162830-index.htm) Shelf takedown | 333-198851 | 0001193125-17-162830 | | 2017-05-04 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312517158661/0001193125-17-158661-index.htm) Shelf takedown | 333-198851 | 0001193125-17-158661 | | 2017-01-27 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312517021820/0001193125-17-021820-index.htm) Shelf takedown | 333-198851 | 0001193125-17-021820 | | 2015-04-24 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312515146810/0001193125-15-146810-index.htm) Shelf takedown | 333-198851 | 0001193125-15-146810 | | 2015-04-23 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312515144211/0001193125-15-144211-index.htm) Shelf takedown | 333-198851 | 0001193125-15-144211 | | 2014-11-07 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312514403639/0001193125-14-403639-index.htm) Shelf takedown | 333-198851 | 0001193125-14-403639 | | 2014-11-07 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312514402372/0001193125-14-402372-index.htm) Shelf takedown | 333-198851 | 0001193125-14-402372 | | 2014-10-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999514002938/9999999995-14-002938-index.htm) Declared effective | 333-198851 | 9999999995-14-002938 | | 2014-09-19 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312514347180/0001193125-14-347180-index.htm) Shelf registered | 333-198851 | 0001193125-14-347180 | | 2013-11-18 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312513444693/0001193125-13-444693-index.htm) Shelf takedown | 333-191153 | 0001193125-13-444693 | | 2013-09-25 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999513002789/9999999995-13-002789-index.htm) Declared effective | 333-191153 | 9999999995-13-002789 | | 2013-09-13 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312513366603/0001193125-13-366603-index.htm) Shelf registered | 333-191153 | 0001193125-13-366603 | | 2012-11-16 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999512003293/9999999995-12-003293-index.htm) Declared effective | 333-184780 | 9999999995-12-003293 | | 2012-11-06 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312512454505/0001193125-12-454505-index.htm) Shelf registered | 333-184780 | 0001193125-12-454505 | | 2012-10-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999512003028/9999999995-12-003028-index.htm) Declared effective | 333-184218 | 9999999995-12-003028 | | 2012-10-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999512003021/9999999995-12-003021-index.htm) Declared effective | 333-180733 | 9999999995-12-003021 | | 2012-10-01 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312512411374/0001193125-12-411374-index.htm) Shelf registered | 333-184218 | 0001193125-12-411374 | | 2012-06-26 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312512283914/0001193125-12-283914-index.htm) Shelf takedown | 333-180733 | 0001193125-12-283914 | | 2012-06-11 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312512265872/0001193125-12-265872-index.htm) Shelf takedown | 333-180733 | 0001193125-12-265872 | | 2012-06-08 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999512001777/9999999995-12-001777-index.htm) Declared effective | 333-180733 | 9999999995-12-001777 | | 2012-05-11 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312512228584/0001193125-12-228584-index.htm) Shelf takedown | 333-180733 | 0001193125-12-228584 | | 2012-05-11 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000119312512228542/0001193125-12-228542-index.htm) Shelf takedown | 333-180733 | 0001193125-12-228542 | | 2012-04-26 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999512001210/9999999995-12-001210-index.htm) Declared effective | 333-180733 | 9999999995-12-001210 | | 2012-04-13 | [S-1](https://www.sec.gov/Archives/edgar/data/880807/000119312512162732/0001193125-12-162732-index.htm) Registration filed | 333-180733 | 0001193125-12-162732 | | 2010-11-09 | [424B5](https://www.sec.gov/Archives/edgar/data/880807/000095012310102629/0000950123-10-102629-index.htm) Shelf takedown | 333-170455 | 0000950123-10-102629 | | 2010-11-08 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/880807/000095012310102438/0000950123-10-102438-index.htm) Shelf registered | 333-170455 | 0000950123-10-102438 | | 2007-09-05 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999507003546/9999999995-07-003546-index.htm) Declared effective | 333-145683 | 9999999995-07-003546 | | 2007-08-31 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999507003502/9999999995-07-003502-index.htm) Declared effective | 333-143902 | 9999999995-07-003502 | | 2007-08-24 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312507188972/0001193125-07-188972-index.htm) Shelf registered | 333-145683 | 0001193125-07-188972 | | 2007-07-20 | [424B1](https://www.sec.gov/Archives/edgar/data/880807/000119312507158541/0001193125-07-158541-index.htm) Final prospectus | 333-143903 | 0001193125-07-158541 | | 2007-07-19 | [EFFECT](https://www.sec.gov/Archives/edgar/data/880807/999999999507002887/9999999995-07-002887-index.htm) Declared effective | 333-143903 | 9999999995-07-002887 | | 2007-06-20 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312507139090/0001193125-07-139090-index.htm) Shelf registered | 333-143903 | 0001193125-07-139090 | | 2007-06-20 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312507139086/0001193125-07-139086-index.htm) Shelf registered | 333-143902 | 0001193125-07-139086 | | 2005-04-22 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312505082377/0001193125-05-082377-index.htm) Shelf registered | 333-124235 | 0001193125-05-082377 | | 2005-02-24 | [424B1](https://www.sec.gov/Archives/edgar/data/880807/000119312505035526/0001193125-05-035526-index.htm) Final prospectus | 333-121946 | 0001193125-05-035526 | | 2005-01-11 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312505004026/0001193125-05-004026-index.htm) Shelf registered | 333-121946 | 0001193125-05-004026 | | 2003-10-03 | [424B4](https://www.sec.gov/Archives/edgar/data/880807/000119312503057546/0001193125-03-057546-index.htm) Final prospectus | 333-108347 | 0001193125-03-057546 | | 2003-08-29 | [S-3](https://www.sec.gov/Archives/edgar/data/880807/000119312503043579/0001193125-03-043579-index.htm) Shelf registered | 333-108347 | 0001193125-03-043579 | [All filings of this company](https://equitycapital.markets/filings?cik=880807) · [CSV](https://equitycapital.markets/filings.csv?cik=880807) --- Source page: https://equitycapital.markets/company/880807 · Data: U.S. SEC EDGAR · CC BY 4.0