John W. Kosiba Jr. is CFO & VP +1 at AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC). They have made 17 open-market trades across 1 company since 2017, most recently 2026-06-11.
CIK 0001703463
4 open-market purchases totalling $184K since 2017, against 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMSC | 334,377 | $8.6M |
Shares reported on the most recent Form 4, priced at the 2026-06-11 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMSC | SELL · 10b5-1 | 2026-06-11 | 2026-06-11 | $37.46 | $254K | +4.8% | -12.4% | -24.9% |
| AMSC | SELL · 10b5-1 | 2026-06-08 | 2026-06-10 | $41.77 | $202K | +11.7% | -3.5% | -18.3% |
| AMSC | SELL · 10b5-1 | 2026-06-02 | 2026-06-03 | $50.45 | $1.9M | -9.8% | -16.1% | -37.2% |
| AMSC | SELL | 2025-08-04 | 2025-08-06 | $54.70 | $6.5M | -2.8% | -11.1% | +2.3% |
| AMSC | SELL · 10b5-1 | 2025-06-11 | 2025-06-12 | $28.56 | $371K | +20.8% | +44.5% | +82.6% |
| AMSC | SELL · 10b5-1 | 2025-06-06 | 2025-06-09 | $31.83 | $302K | -9.0% | +19.5% | +49.9% |
| AMSC | SELL · 10b5-1 | 2025-05-27 | 2025-05-29 | $26.40 | $2.6M | +24.8% | +32.9% | +88.8% |
| AMSC | SELL · 10b5-1 | 2025-05-20 | 2025-05-22 | $24.50 | $291K | +26.4% | +33.4% | +98.0% |
| AMSC | SELL | 2024-11-04 | 2024-11-06 | $28.28 | $1.4M | +7.0% | +9.2% | -11.3% |
| AMSC | SELL · 10b5-1 | 2024-06-11 | 2024-06-12 | $21.68 | $694K | -0.4% | +23.5% | -5.8% |
| AMSC | SELL · 10b5-1 | 2024-05-21 | 2024-05-23 | $14.80 | $826K | +46.7% | +52.4% | +35.6% |
| AMSC | SELL · 10b5-1 | 2023-06-21 | 2023-06-23 | $6.08 | $972K | +4.1% | +25.9% | +30.4% |
| AMSC | BUY | 2022-12-16 | 2022-12-19 | $3.50 | $53K | +3.7% | +50.7% | +15.5% |
| AMSC | BUY | 2022-12-12 | 2022-12-13 | $3.34 | $84K | +2.4% | +42.5% | +46.1% |
| AMSC | SELL | 2022-06-10 | 2022-06-13 | $5.97 | $101K | -11.7% | -20.1% | -16.3% |
| AMSC | SELL | 2022-05-31 | 2022-06-02 | $5.45 | $145K | -18.4% | -21.5% | -14.4% |
| AMSC | SELL | 2021-12-10 | 2021-12-13 | $11.31 | $515K | +4.4% | -13.6% | -33.8% |
| AMSC | SELL | 2021-11-01 | 2021-11-02 | $18.84 | $410K | -12.1% | -34.2% | -55.1% |
| AMSC | SELL | 2021-07-01 | 2021-07-06 | $17.66 | $226K | -21.6% | -28.7% | -19.5% |
| AMSC | SELL | 2021-05-24 | 2021-05-24 | $14.18 | $164K | +19.3% | +15.2% | -17.4% |
| AMSC | SELL | 2021-01-21 | 2021-01-22 | $27.69 | $1.2M | -8.3% | -17.0% | -44.0% |
| AMSC | SELL | 2020-11-25 | 2020-11-30 | $19.28 | $482K | -1.6% | +16.2% | +29.5% |
| AMSC | SELL | 2019-12-19 | 2019-12-23 | $7.63 | $157K | -2.0% | -2.9% | -39.3% |
| AMSC | SELL | 2018-12-28 | 2019-01-02 | $10.31 | $255K | +5.0% | +18.0% | +8.5% |
| AMSC | SELL | 2018-12-07 | 2018-12-11 | $10.58 | $66K | -17.9% | +4.8% | +37.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.