Kosiba John W JR (CIK 1703463) reported 22 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-11). Recent activity: Sell AMSC (5,026 shares), Sell AMSC (1,743 shares), Sell AMSC (3,286 shares), Sell AMSC (1,549 shares), Buy AMSC (30,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-11 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 5,026 | $187,604 |
| 2026-06-11 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 1,743 | $65,975 |
| 2026-06-10 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 3,286 | $136,371 |
| 2026-06-10 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 1,549 | $65,596 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Buy | 30,000 | $0 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 5,704 | $282,126 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 12,122 | $613,601 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 12,036 | $619,445 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 600 | $31,315 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 3,200 | $154,582 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 2,638 | $130,013 |
| 2026-06-03 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 609 | $30,953 |
| 2025-08-06 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 34,260 | $1.9M |
| 2025-08-06 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 15,740 | $867,746 |
| 2025-08-06 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 9,843 | $543,924 |
| 2025-06-12 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 6,342 | $181,064 |
| 2025-06-12 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 300 | $8,724 |
| 2025-06-09 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 4,744 | $151,002 |
| 2025-05-29 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 10,097 | $257,978 |
| 2025-05-29 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 39,903 | $1.1M |
| 2025-05-22 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Sell | 11,860 | $290,570 |
| 2025-05-19 | AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) | SVP, CFO & Treasurer | Buy | 120,000 | $0 |
Source: SEC Form 4 filings · as of 2026-06-11