Arthur H House sold $494k of AMSC
director at AMERICAN SUPERCONDUCTOR CORP /DE/. 9,703 shares at an average of $50.92, traded Aug 8, 2025, filed Aug 8, 2025.
Score components
- +15RoleDirector
- +18Trade size$494k at market
- +5Share of holdings soldSold 17% of holdings
- +15Cluster3 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -4.1%, 3m -23.8%, 6m -44.8%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0000950170-25-105858, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 6, 2025 | MOption exercise Common Stock | +9,703 | $6.80 | $66k | 58,366 | Aug 8, 2025 |
| Aug 8, 2025 | SOpen-market sale Common Stock | -9,703 | $50.92 | $494k | 48,663 | Aug 8, 2025 |
| Aug 6, 2025 | MOption exercise Stock Options (Right to Buy)derivative | -9,703 | $0.00 | $0 | 0 | Aug 8, 2025 |
Related signals
Other insiders at AMERICAN SUPERCONDUCTOR CORP /DE/ and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 46Moderate | AMERICAN SUPERCONDUCTOR CORP /DE/ | Laura A. Dambier director | $151k 4,000 shares | -21% | |
| 39Weak | AMERICAN SUPERCONDUCTOR CORP /DE/ | Daniel P McGahn Chairman, President and CEO | $604k 16,117 shares | -1% | |
| 30Weak | AMERICAN SUPERCONDUCTOR CORP /DE/ | John W Kosiba JR SVP, CFO & Treasurer | $254k 6,769 shares | -2% | |
| 36Weak | AMERICAN SUPERCONDUCTOR CORP /DE/ | Daniel P McGahn Chairman, President and CEO | $404k 9,670 shares | -1% | |
| 29Weak | AMERICAN SUPERCONDUCTOR CORP /DE/ | John W Kosiba JR SVP, CFO & Treasurer | $202k 4,835 shares | -1% | |
| 45Moderate | AMERICAN SUPERCONDUCTOR CORP /DE/ | Daniel P McGahn Chairman, President and CEO | $4.3M 85,418 shares | -7% | |
| 42Moderate | AMERICAN SUPERCONDUCTOR CORP /DE/ | John W Kosiba JR SVP, CFO & Treasurer | $1.9M 36,909 shares | -10% | |
| 15Weak | AMSCsell AMERICAN SUPERCONDUCTOR CORP /DE/ | David R Oliver Jr director | $6,820 200 shares | -0% | |
| 10Weak | AMSCbuy AMERICAN SUPERCONDUCTOR CORP /DE/ | David R Oliver Jr director | $1,666 200 shares | +0% | |
| 67Notable | AMERICAN SUPERCONDUCTOR CORP /DE/ | John W Kosiba JR SVP, CFO & Treasurer | $3.3M 59,843 shares | -15% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.