John W Kosiba JR sold $1.9M of AMSC
SVP, CFO & Treasurer at AMERICAN SUPERCONDUCTOR CORP /DE/. 36,909 shares at an average of $50.45, traded Jun 2, 2026, filed Jun 3, 2026.
Score components
- +22RoleCFO
- +25Trade size$1.9M at market
- 0Share of holdings soldSold 9.6% of holdings
- +15Cluster3 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
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.
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 0001193125-26-255471, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Jun 1, 2026 | AGrant or award Common Stock10b5-1 | +30,000 | $0.00 | $0 | 382,890 | Jun 3, 2026 |
| Jun 2, 2026 | SOpen-market sale Common Stock10b5-1 | -5,704 | $49.46 | $282k | 377,186 | Jun 3, 2026 |
| Jun 2, 2026 | SOpen-market sale Common Stock10b5-1 | -12,122 | $50.62 | $614k | 365,064 | Jun 3, 2026 |
| Jun 2, 2026 | SOpen-market sale Common Stock10b5-1 | -12,036 | $51.47 | $619k | 353,028 | Jun 3, 2026 |
| Jun 2, 2026 | SOpen-market sale Common Stock10b5-1 | -600 | $52.19 | $31k | 352,428 | Jun 3, 2026 |
| Jun 3, 2026 | SOpen-market sale Common Stock10b5-1 | -3,200 | $48.31 | $155k | 349,228 | Jun 3, 2026 |
| Jun 3, 2026 | SOpen-market sale Common Stock10b5-1 | -2,638 | $49.28 | $130k | 346,590 | Jun 3, 2026 |
| Jun 3, 2026 | SOpen-market sale Common Stock10b5-1 | -609 | $50.83 | $31k | 345,981 | Jun 3, 2026 |
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% | |
| 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% | |
| 38Weak | AMERICAN SUPERCONDUCTOR CORP /DE/ | Arthur H House director | $494k 9,703 shares | -17% | |
| 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.