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AMSCNasdaq
AMERICAN SUPERCONDUCTOR CORP /DE/
Motors & Generators · DE · CIK 880807
Designs, develops, and deploys power control solutions for grids, wind power, and naval vessels
red 8-K · 90d⚡ Elevated coverage
$1.91B
Market cap
$39.83
Last close
+0.3%
1D
-12.1%
5D
842K
Volume
Price · last 39 sessions-20.8%
May 4L $36.78 · H $58.72Jun 29
370
Total filings
Jun 18, 2026
Last filing
03/31
Fiscal year end
DEFA14ADEFA14AJun 18, 2026DEF 14ADEF 14AJun 18, 20268-KExecutive ChangeJun 2, 202610-KFORM 10-KMay 27, 20268-KResults of OperationsMay 27, 20268-K/ACompany UpdateFeb 17, 202610-QFORM 10-QFeb 4, 20268-KResults of OperationsFeb 4, 20268-KCompany UpdateDec 23, 20258-KMaterial Agreement · Acquisition / DispositionDec 10, 202510-QFORM 10-QNov 5, 20258-KResults of OperationsNov 5, 202510-QFORM 10-QJul 30, 20258-KResults of OperationsJul 30, 20258-KShareholder VoteJul 29, 2025DEFA14ADEFA14AJun 13, 2025DEF 14ADEF 14AJun 13, 20258-KCompany UpdateJun 11, 2025424B5424B5Jun 11, 2025424B5424B5Jun 10, 202510-KFORM 10-KMay 21, 20258-KExecutive Change · Results of OperationsMay 21, 20258-KResults of Operations · Bylaw AmendmentFeb 5, 202510-QFORM 10-QFeb 5, 2025SC 13GSC 13GNov 8, 2024SC 13GSC 13GNov 4, 202410-QFORM 10-QOct 30, 20248-KResults of OperationsOct 30, 2024SC 13GSC 13GOct 22, 20248-KCompany UpdateAug 13, 20248-K/ACompany UpdateAug 6, 202410-QFORM 10-QAug 6, 20248-KResults of OperationsAug 6, 20248-KExecutive Change · Shareholder VoteAug 5, 20248-KMaterial Agreement · Acquisition / DispositionAug 5, 2024DEFA14ADEFA14AJun 20, 2024DEF 14ADEF 14AJun 20, 202410-KFORM 10-KMay 29, 20248-KExecutive Change · Results of OperationsMay 29, 2024424B5424B5Jan 31, 20248-KCompany UpdateJan 31, 2024424B5424B5Jan 30, 202410-QFORM 10-QJan 24, 20248-KResults of OperationsJan 24, 202410-QFORM 10-QNov 1, 20238-KResults of OperationsNov 1, 20238-KShareholder VoteAug 11, 202310-QFORM 10-QAug 9, 20238-KResults of OperationsAug 9, 2023DEFA14ADEFA14AJun 28, 2023DEF 14ADEF 14AJun 28, 20238-KExecutive ChangeJun 21, 202310-KFORM 10-KMay 31, 20238-KResults of OperationsMay 31, 2023SC 13GAMSC 13GFeb 14, 202310-QFORM 10-QFeb 1, 20238-KResults of OperationsFeb 1, 2023SC 13GSC 13GJan 31, 202310-QFORM 10-QNov 1, 20228-KResults of OperationsNov 1, 20228-KExecutive Change · Shareholder VoteAug 5, 202210-QFORM 10-QAug 3, 20228-KResults of OperationsAug 3, 2022DEFA14ADEFA14AJul 26, 2022SC 13GSC 13GJul 8, 2022DEFA14ADEFA14AJun 23, 2022DEF 14ADEF 14AJun 23, 20228-KExecutive ChangeJun 10, 202210-KFORM 10-KJun 1, 20228-KResults of OperationsJun 1, 2022SC 13GSC 13GFeb 14, 202210-QFORM 10-QFeb 2, 20228-KResults of OperationsFeb 2, 2022SC 13GSC 13GJan 18, 202210-QFORM 10-QNov 8, 20218-KResults of OperationsNov 8, 202110-QFORM 10-QAug 4, 20218-KResults of OperationsAug 4, 20218-KShareholder VoteAug 2, 2021DEFA14ADEFA14AJun 17, 2021
Insider Activity
In the 90 days to Feb 24, 2026: 1 sold $7K.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Feb 24, 2026 | Oliver David R JrDirector | Sell | 200 | $34.10 | $7K |
| Jun 18, 2019 | Oliver David R JrDirector | Buy | 200 | $8.33 | $2K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
In the News
⚡ Elevated coverageCoverage (30d): 1 reputable article.
Investor's Business DailyAmerican Superconductor CEO Puts AI Data-Center Growth In Perspective26d agoInvestor's Business DailyData Center Grid Company's Profit Soars 150%, But Outlook Light1mo ago
Reputable outlets only (Reuters, WSJ, CNBC, Barron's, and peers). More on Google News ↗
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