AMERICAN SUPERCONDUCTOR CORP /DE/ insider trading
AMSC$30.01+0.51 (+1.73% today)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-49.4%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ1 '25Q2 '25Q3 '25Q4 '25Q1 '26Q2 '26
Unlock quarterly net flowKey players
- DPDaniel P. McGahn2.3642%
- JWJohn W. Kosiba Jr.0.691%
- DRDavid R. Oliver Jr.0.1318%
- AHArthur H. House0.1069%
- BGBarbara G. Littlefield0.0765%
- MDMargaret D. Klein0.0402%
- LALaura A. Dambier0.0309%
- TRTerence Robert Donnelly0.0055%
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| AMSC | Laura A. Dambier | Open market sell$151K | -21.1% | $37.63 | $151K | Jun 11, 2026 | Jun 12, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$66K | -0.5% | $37.85 | $66K | Jun 11, 2026 | Jun 11, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$188K | -1.5% | $37.33 | $188K | Jun 11, 2026 | Jun 11, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$174K | -0.4% | $37.85 | $174K | Jun 11, 2026 | Jun 11, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$429K | -1.0% | $37.28 | $429K | Jun 11, 2026 | Jun 11, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$65.6K | -0.5% | $42.35 | $65.6K | Jun 8, 2026 | Jun 10, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$136K | -1.0% | $41.50 | $136K | Jun 8, 2026 | Jun 10, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$197K | -0.4% | $42.19 | $197K | Jun 8, 2026 | Jun 10, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$207K | -0.4% | $41.39 | $207K | Jun 8, 2026 | Jun 10, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$31K | -0.2% | $50.83 | $31K | Jun 3, 2026 | Jun 3, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$130K | -0.8% | $49.28 | $130K | Jun 3, 2026 | Jun 3, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$155K | -0.9% | $48.31 | $155K | Jun 3, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$41.7K | -0.1% | $50.99 | $41.7K | Jun 3, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$25.1K | 0.0% | $50.29 | $25.1K | Jun 3, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$222K | -0.4% | $49.25 | $222K | Jun 3, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$342K | -0.6% | $48.31 | $342K | Jun 3, 2026 | Jun 3, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$31.3K | -0.2% | $52.19 | $31.3K | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$619K | -3.3% | $51.47 | $619K | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$614K | -3.2% | $50.62 | $614K | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | John W. Kosiba Jr. | Open market sell$282K | -1.5% | $49.46 | $282K | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$120K | -0.2% | $52.14 | $120K | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$1.47M | -2.4% | $51.46 | $1.47M | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$1.41M | -2.3% | $50.63 | $1.41M | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | Daniel P. McGahn | Open market sell$681K | -1.1% | $49.45 | $681K | Jun 2, 2026 | Jun 3, 2026 |
| AMSC | David R. Oliver Jr. | Open market sell$6.82K | -0.3% | $34.10 | $6.82K | Feb 24, 2026 | Feb 26, 2026 |