Form 4 for AMSC AMERICAN SUPERCONDUCTOR CORP /DE/
Accepted 2025-08-08 00:00:00 ET · period of report 2025-08-06 · accession 0000950170-25-105858 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-08-08 | 2025-08-08 | AMSC | House Arthur H | Dir | S - Sale+OE | $50.92 | -9,703 | 48.7K | -17% | -$494.1K |
| D | 2025-08-08 | 2025-08-06 | AMSC | House Arthur H | Dir | M - OptEx | $6.80 | +9,703 | 58.4K | +20% | +$66.0K |
| D | 2025-08-08 | 2025-08-06 | AMSC | House Arthur H | Dir | M - OptEx | $0.00 | -9,703 | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-08-08 | S | D | 9,703 | $50.92 | 48,663 | D | — | — | (F2) Following all the transactions reported on this Form 4, the reporting person holds 48,663 shares directly. |
| 2 | Common | Common Stock | 2025-08-06 | M | A | 9,703 | $6.80 | 58,366 | D | — | — | |
| 3 | Derivative | Stock Options (Right to Buy) | 2025-08-06 | M | D | 9,703 | $0.00 | 0 | D | $6.80 · — to 2026-09-20 | 9,703 Common Stock | (F3) The stock option was automatically granted under the Amended and Restated 2007 Director Stock Plan on the third business day following the reporting person's election to the Board. The stock option vested in two equal annual installments beginning September 20, 2017, and became fully vested and exerciseable on September 20, 2018. |