House Arthur H
SEC CIK 1685155 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | Dir | 51.8K | — | $494.1K | 7 | 2022-04-05 | 2026-04-03 |
Most active insiders at AMSC, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | McGahn Daniel P | COB, Pres, CEO, Dir | — | $5.32M |
| 2 | Kosiba John W JR | SVP, CFO, Treas | — | $2.32M |
| 3 | Dambier Laura A. | Dir | — | $150.5K |
| 4 | OLIVER DAVID R JR | Dir | — | $6,820 |
| 5 | Donnelly Terence Robert | Dir | — | — |
| 6 | Klein Margaret D. | Dir | — | — |
| 7 | Littlefield Barbara G. | Dir | — | — |
| 8 | House Arthur H | Dir | — | — |
Transactions 7
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-04-07 17:35 | 2026-04-03 | AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | House Arthur H | Dir | A - Grant | $0.00 | +3,116 | 51.8K | +6% | $0 | |
| D | 2025-08-08 | 2025-08-08 | AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | House Arthur H | Dir | S - Sale+OE | $50.92 | -9,703 | 48.7K | -17% | -$494.1K |
| D | 2025-08-08 | 2025-08-06 | AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | House Arthur H | Dir | M - OptEx | $6.80 | +9,703 | 58.4K | +20% | +$66.0K |
| 2025-04-04 | 2025-04-03 | AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | House Arthur H | Dir | A - Grant | $0.00 | +2,639 | 48.7K | +6% | $0 | |
| 2024-04-04 | 2024-04-03 | AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | House Arthur H | Dir | A - Grant | $0.00 | +3,840 | 46.0K | +9% | $0 | |
| 2023-04-07 | 2023-04-05 | AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | House Arthur H | Dir | A - Grant | $0.00 | +11.6K | 42.2K | +38% | $0 | |
| 2022-04-06 | 2022-04-05 | AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | House Arthur H | Dir | A - Grant | $0.00 | +6,067 | 30.6K | +25% | $0 |
Purchase Sale Sale after option exercise All abbreviations