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AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) Ownership Summary
Institutional Holders
Total Number of Holders 177
% of Shares Outstanding 70.73%
Total Shares Held 27,085,190
Total Value of Holdings $587,206,919.20
Net Activity 3,980,841
 
Top 5 Holders Shares Held Shares Changed
BLACKROCK INC. 2,544,019 1,797,753
BAILLIE GIFFORD & CO 2,214,083 (312,467)
AWM INVESTMENT COMPANY, INC. 2,153,855 (507,464)
VANGUARD GROUP INC 2,086,720 387,786
HOOD RIVER CAPITAL MANAGEMENT LLC 1,735,014 116,207

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Insider Trades
 Last 3 mos.Last 12 mos.
Number of Insider Trades04
Number of Buys00
Number of Sells04
Net Activity 0 (118,724)
 
Top 5 TradesShares Traded Date
KOSIBA JOHN W JR32,0006/11/2024
MCGAHN DANIEL P37,1656/11/2024
KOSIBA JOHN W JR29,0005/21/2024
MCGAHN DANIEL P20,5595/21/2024
DAMBIER LAURA A.3,8404/3/2024

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5% Ownership (SC 13D & SC 13G Filings)
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View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   AWM INVESTMENT COMPANY, INC.  08/09/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   AWM INVESTMENT COMPANY, INC.  02/14/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   ROYCE & ASSOCIATES LP  01/30/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   BAILLIE GIFFORD & CO  01/30/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   BAILLIE GIFFORD & CO  07/05/23   File this document to a folder.