// company-profile
American Superconductor Corp /de/
AMSC// activity-summary
Recent insider activity is bullish. Over the last 30 days, 2 insiders purchased shares versus 1 sale. Buying was led by Kosiba John W JR.
// 90-day insight
Over the last 90 days, American Superconductor Corp /de/ insiders bought $0 (8 transactions) and sold $151K (1 transaction).
- Most active insider: McGahn Daniel P with 13 transactions totaling $5.3M.
- Largest single sale: $1.5M by McGahn Daniel P on Jun 2, 2026.
- 96% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of American Superconductor Corp /de/ as of 2026-03-31
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 11, 2026 | Dambier Laura A. | AMSC | Sale | 4,000 | $37.63 | $151K |
| Jun 11, 2026 | Kosiba John W JR | AMSC | Sale10b5 | 5,026 | $37.33 | $188K |
| Jun 11, 2026 | Kosiba John W JR | AMSC | Sale10b5 | 1,743 | $37.85 | $66K |
| Jun 11, 2026 | McGahn Daniel P | AMSC | Sale10b5 | 11,508 | $37.28 | $429K |
| Jun 11, 2026 | McGahn Daniel P | AMSC | Sale10b5 | 4,609 | $37.85 | $174K |
45 more transactions hidden
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