Kosiba John W JR
SEC insider (Form 3/4/5 filer). CIK 0001703463. SVP, CFO & Treasurer at AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC). 24 reported Form 4/5 transactions since Sep 2024; latest on Jun 11, 2026. Located in AYER, MA.
Companies Kosiba John W JR has filed insider reports for
- AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC): Officer, SVP, CFO & Treasurer
Kosiba John W JR
CIK: 0001703463
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
AMERICAN SUPERCONDUCTOR CORP /DE/
Discretionary Trading P&L
Holdings
Transaction History (24 total)
- Jun 11, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect5K shares at avg. $37.33$188K - Jun 11, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect1.7K shares at avg. $37.85$66K - Jun 8, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect1.5K shares at avg. $42.35$66K - Jun 8, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect3.3K shares at avg. $41.50$136K - Jun 3, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect3.2K shares at avg. $48.31$155K - Jun 3, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect2.6K shares at avg. $49.28$130K - Jun 3, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect609 shares at avg. $50.83$31K - Jun 2, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect12K shares at avg. $51.47$619K - Jun 2, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect5.7K shares at avg. $49.46$282K - Jun 2, 2026AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/
SaleDirect600 shares at avg. $52.19$31K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 11, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 5,026 | $37.33 | $187,604 | Direct |
| Jun 11, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 1,743 | $37.85 | $65,975 | Direct |
| Jun 8, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 1,549 | $42.35 | $65,596 | Direct |
| Jun 8, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 3,286 | $41.50 | $136,371 | Direct |
| Jun 3, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 3,200 | $48.31 | $154,582 | Direct |
| Jun 3, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 2,638 | $49.28 | $130,013 | Direct |
| Jun 3, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 609 | $50.83 | $30,953 | Direct |
| Jun 2, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 12,036 | $51.47 | $619,445 | Direct |
| Jun 2, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 5,704 | $49.46 | $282,126 | Direct |
| Jun 2, 2026 | AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ | Sale | 600 | $52.19 | $31,315 | Direct |
1-10 of 24 transactions