House Arthur H
SEC insider (Form 3/4/5 filer). CIK 0001685155. Director at AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC). 4 reported Form 4/5 transactions since Sep 2024; latest on Apr 3, 2026. Located in AYER, MA.
Companies House Arthur H has filed insider reports for
- AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC): Director
House Arthur H
CIK: 0001685155
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)1 (25.0%)
Position reduction
Option Exercises (M)1 (25.0%)
Derivative conversions
Awards (A)2 (50.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
Director
Discretionary Trading P&L
Holdings
Transaction History (4 total)
- Apr 3, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
AwardDirect3.1K shares- - Aug 8, 2025AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect9.7K shares at avg. $50.92$494K - Aug 6, 2025AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
ExerciseDirect9.7K shares at avg. $6.80$66K - Apr 3, 2025AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
AwardDirect2.6K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Apr 3, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Award | 3,116 | - | $0 | Direct |
| Aug 8, 2025 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 9,703 | $50.92 | $494,082 | Direct |
| Aug 6, 2025 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Exercise | 9,703 | $6.80 | $65,980 | Direct |
| Apr 3, 2025 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Award | 2,639 | - | - | Direct |
1-4 of 4 transactions