AMSC AMERICAN SUPERCONDUCTOR CORP /DE/
Price Chart
Executive Summary
Three AMSC insiders, including the CEO and CFO, sold a total of $767K in open-market transactions over a 4-day window. The cluster is entirely selling, but the total value represents only ~0.04% of the company's $1.9B market cap, falling well below the 0.1% materiality threshold. Per academic literature, cluster sales are weak predictors of future returns, and the dollar amounts here are trivial relative to market cap.
Key Financial Metrics
Actionable Insight
The dollar amounts are too small relative to market cap to warrant a directional read. Monitor for any upcoming 8-K or material event that could explain the timing, but this cluster alone does not signal a change in fundamentals.
Key Facts
- CEO Daniel McGahn sold $636K total across two days (June 8 and June 11)
- CFO John Kosiba sold $324K total across the same two days
- Director Laura Dambier sold $151K on June 11
- Total cluster value of $767K is ~0.04% of AMSC's $1.9B market cap
- All transactions were open-market sales (code S)
Financial Impact
Total insider sales of $767K represent ~0.04% of market cap — immaterial
Risk Factors
- Insiders may continue selling, increasing supply overhang
- CEO and CFO both selling in the same window could indicate personal portfolio rebalancing rather than bearish conviction
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-AMSC-1781295157079 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 12, 2026
2d ago
|
Insider Cluster
| $40.05 awaiting T+5 | awaiting T+5 | — | $40.02 (−0.07%) |
|
Jun 11, 2026
3d ago
|
Institutional Cluster
| $39.52 awaiting T+5 | awaiting T+5 | — | $40.02 (+1.27%) |
|
Jun 11, 2026
3d ago
|
Insider Cluster
| $39.52 awaiting T+5 | awaiting T+5 | — | $40.02 (+1.27%) |
|
Jun 11, 2026
3d ago
|
Insider Cluster
| $39.52 awaiting T+5 | awaiting T+5 | — | $40.02 (+1.27%) |
|
Jun 10, 2026
4d ago
|
Insider Cluster
| $36.76 awaiting T+5 | awaiting T+5 | — | $40.02 (+8.87%) |
|
May 27, 2026
18d ago
|
8-K
| $51.33 $46.40 | ▼ −9.60% | ▼ −9.92% | $40.02 (−22.03%) |
|
May 21, 2026
24d ago
|
Press Release
| $51.84 $51.15 | ▼ −1.33% | ▼ −3.01% | $40.02 (−22.80%) |
US Market Status
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