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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

AMSC

AMERICAN SUPERCONDUCTOR CORP /DE/

Superinvestors

Institutional investors holding AMSC

Consensus →
InvestorFundWeightSharesValueQuarter
Meridian / ArrowMarkMeridian Contrarian Fund0.12%135,432$4.6M2026Q1
Polen Capital ManagementPolen Capital Management0.00%23,565$678K2025Q4

Congressional Activity

Congressional data coming soon

Insider Activity

6

Total trades

$0

Volume

6

Buys

0

Sells

Last trade: Apr 3, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
Apr 3, 2026Terence Robert DonnellyBuy–
Apr 3, 2026Terence Robert DonnellyBuy–

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

Apr 3, 2026
Terence Robert Donnelly
Buy
–
Apr 3, 2026Terence Robert DonnellyBuy–
Apr 3, 2026Terence Robert DonnellyBuy–
Apr 3, 2026Terence Robert DonnellyBuy–