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American Superconductor Corp /De/ (NASDAQ:AMSC)
US · Delayed Price · Currency is USD
25.43+0.31 (+1.23%)
Insider Score
––Not scored
AMSC Insider Score
Insiders here have filed 1 Form 4 in the last 90 days, but all of them are share awards, grants or other non-market transactions. Those are compensation, not a decision to buy, so they are not scored.
AMSC Stock Insider Trading Activity
AMSC stock’s insider trading shows 24 sales on the open market for an estimated $7.79M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Littlefield Barbara G. Director | Award | 1,607 | — | — | 4.5% | 37,034 | Sep 18, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 5,026 | $37.33 | $187.62K | 1.5% | 336,120 | Jun 11, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 1,743 | $37.85 | $65.97K | 0.5% | 334,377 | Jun 11, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 4,609 | $37.85 | $174.45K | 0.4% | 1,131,929 | Jun 11, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 11,508 | $37.28 | $429.02K | 1.0% | 1,136,538 | Jun 11, 2026 | — | Form 4 |
| Dambier Laura A. Director | Sell | 4,000 | $37.63 | $150.52K | 21.1% | 14,992 | Jun 11, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 3,286 | $41.50 | $136.37K | 0.9% | 342,695 | Jun 8, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 1,549 | $42.35 | $65.60K | 0.5% | 341,146 | Jun 8, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 4,992 | $41.39 | $206.62K | 0.4% | 1,152,724 | Jun 8, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 4,678 | $42.19 | $197.36K | 0.4% | 1,148,046 | Jun 8, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 3,200 | $48.31 | $154.59K | 0.9% | 349,228 | Jun 3, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 2,638 | $49.28 | $130.00K | 0.8% | 346,590 | Jun 3, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 609 | $50.83 | $30.96K | 0.2% | 345,981 | Jun 3, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 4,501 | $49.25 | $221.67K | 0.4% | 1,159,033 | Jun 3, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 7,075 | $48.31 | $341.79K | 0.6% | 1,163,534 | Jun 3, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 500 | $50.29 | $25.14K | 0.0% | 1,158,533 | Jun 3, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 817 | $50.99 | $41.66K | 0.1% | 1,157,716 | Jun 3, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 5,704 | $49.46 | $282.12K | 1.5% | 377,186 | Jun 2, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 12,122 | $50.62 | $613.62K | 3.2% | 365,064 | Jun 2, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 12,036 | $51.47 | $619.49K | 3.3% | 353,028 | Jun 2, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 13,762 | $49.45 | $680.53K | 1.1% | 1,229,372 | Jun 2, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 27,900 | $50.63 | $1.41M | 2.3% | 1,201,472 | Jun 2, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 28,558 | $51.46 | $1.47M | 2.4% | 1,172,914 | Jun 2, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Sell | 2,305 | $52.14 | $120.18K | 0.2% | 1,170,609 | Jun 2, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Sell | 600 | $52.19 | $31.31K | 0.2% | 352,428 | Jun 2, 2026 | — | Form 4 |
| McGahn Daniel P CEO | Award | 60,000 | — | — | 5.1% | 1,243,134 | Jun 1, 2026 | — | Form 4 |
| Kosiba John W JR CFO | Award | 30,000 | — | — | 8.5% | 382,890 | Jun 1, 2026 | — | Form 4 |
| House Arthur H Director | Award | 3,116 | — | — | 6.4% | 51,779 | Apr 3, 2026 | — | Form 4 |
| Donnelly Terence Robert Director | Award | 2,665 | — | — | New | 2,665 | Apr 3, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.