AMSC · Nasdaq · CIK 0000880807

AMERICAN SUPERCONDUCTOR CORP /DE/

AMERICAN SUPERCONDUCTOR CORP /DE/’s most recent SEC filing in our snapshot is a Form 8-K filed on Sep 21, 2026. In fiscal 2026 (year ended Mar 31, 2026) it reported revenue of $299.2M and net income of $133.8M, according to its XBRL data on EDGAR. Its EDGAR record lists 16 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2026
$299.2M
Net income, FY2026
$133.8M
Form 4 filings on record, past 12 months
16

Company overview

Legal name (as filed)
AMERICAN SUPERCONDUCTOR CORP /DE/
Ticker
AMSC
SEC Central Index Key (CIK)
0000880807
Industry (SIC)
Motors & Generators (code 3621)
Business address
DEVENS, MA
State or country of incorporation
DE
Fiscal year ends
March 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#2314 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from AMERICAN SUPERCONDUCTOR CORP /DE/’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$108.4MFY2022$106.0MFY2023$145.6MFY2024$222.8MFY2025$299.2MFY2026
Net income
-$19.2MFY2022-$35.0MFY2023-$11.1MFY2024$6.0MFY2025$133.8MFY2026
AMSC annual results
ItemFY2022
ended Mar 31, 2022		FY2023
ended Mar 31, 2023		FY2024
ended Mar 31, 2024		FY2025
ended Mar 31, 2025		FY2026
ended Mar 31, 2026
Revenue$108.4M$106.0M$145.6M$222.8M$299.2M
Net income-$19.2M-$35.0M-$11.1M$6.0M$133.8M
Diluted EPS-$0.71-$1.26-$0.37$0.16$3.05
Total assets$173.9M$175.6M$232.8M$310.5M$739.5M
Cash and equivalents$40.6M$23.4M$90.5M$79.5M$140.7M

XBRL tags used: revenue = RevenueFromContractWithCustomerIncludingAssessedTax; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

AMSC latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
May 27, 202610-KAnnual report· period Mar 31, 2026Document · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Sep 21, 20268-KDirector or officer change· period Sep 17, 2026Document · Index
Jun 18, 2026DEF 14ADefinitive proxy statement· period Jul 31, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about AMERICAN SUPERCONDUCTOR CORP /DE/, by form type:

4 ×15144 ×98-K ×510-Q ×2SCHEDULE 13G/A ×2ARS ×1DEFA14A ×1DEF 14A ×1SD ×110-K ×1SCHEDULE 13G ×18-K/A ×1
AMSC recent filings
FiledFormWhat it isOriginal
Sep 21, 20268-KDirector or officer change· period Sep 17, 2026Document · Index
Sep 21, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 18, 2026Document · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 5, 20268-KResults of operations; Shareholder vote results· period Jul 31, 2026Document · Index
Jul 31, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Jun 18, 2026ARSARS· period Mar 31, 2026Document · Index
Jun 18, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Jun 18, 2026DEF 14ADefinitive proxy statement· period Jul 31, 2026Document · Index
Jun 12, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 11, 2026Document · Index
Jun 11, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 11, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 11, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 11, 2026Document · Index
Jun 11, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 11, 2026Document · Index
Jun 10, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 10, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 8, 2026Document · Index
Jun 10, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 8, 2026Document · Index
Jun 8, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 8, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 3, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 3, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 3, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 1, 2026Document · Index
Jun 3, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 1, 2026Document · Index
Jun 2, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 2, 2026144Notice of proposed sale of securitiesDocument · Index
Jun 2, 20268-KDirector or officer change· period Jun 1, 2026Document · Index
May 29, 2026SDSpecialized disclosure report (conflict minerals)Document · Index
May 27, 202610-KAnnual report· period Mar 31, 2026Document · Index
May 27, 20268-KResults of operations· period May 27, 2026Document · Index
Apr 29, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 7, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 3, 2026Document · Index
Apr 7, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 3, 2026Document · Index
Apr 7, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 3, 2026Document · Index
Apr 7, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 3, 2026Document · Index
Apr 7, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 3, 2026Document · Index
Apr 7, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 3, 2026Document · Index
Mar 26, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Feb 26, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 24, 2026Document · Index
Feb 17, 20268-K/ACurrent report· period Dec 5, 2025Document · Index
Feb 4, 202610-QQuarterly report· period Dec 31, 2025Document · Index
Feb 4, 20268-KResults of operations· period Feb 4, 2026Document · Index

Insider filing activity

16 Form 4 filings appear in AMERICAN SUPERCONDUCTOR CORP /DE/’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

Other companies in Motors & Generators

All 3 companies in Motors & Generators· Companies headquartered in Massachusetts

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0000880807 and XBRL company facts. AMERICAN SUPERCONDUCTOR CORP /DE/ on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.