Littlefield Barbara G.
Director
Award
Calculated transaction value
$0
1,607 shares @ $0
Traded
Sep 18, 2026
Filed
Sep 21, 2026
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American Superconductor Corp
AMSC
ManufacturingElectronic Equipment
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
27 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Littlefield Barbara G. Director | Sep 21, 2026 3-day lag | Award Sep 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Dambier Laura A. Director | Jun 12, 2026 1-day lag | Sale Jun 11, 2026 | $150.52K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 11, 2026 Same-day filing | Sale Jun 11, 2026 | $65.98K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 11, 2026 Same-day filing | Sale Jun 11, 2026 | $187.6K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 11, 2026 Same-day filing | Sale Jun 11, 2026 | $174.46K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 11, 2026 Same-day filing | Sale Jun 11, 2026 | $429.05K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 10, 2026 2-day lag | Sale Jun 8, 2026 | $197.38K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 10, 2026 2-day lag | Sale Jun 8, 2026 | $136.37K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 10, 2026 2-day lag | Sale Jun 8, 2026 | $65.6K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 10, 2026 2-day lag | Sale Jun 8, 2026 | $206.61K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 Same-day filing | Sale Jun 3, 2026 | $221.69K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 Same-day filing | Sale Jun 3, 2026 | $154.58K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 Same-day filing | Sale Jun 3, 2026 | $41.66K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 Same-day filing | Sale Jun 3, 2026 | $130.01K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 Same-day filing | Sale Jun 3, 2026 | $341.77K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 Same-day filing | Sale Jun 3, 2026 | $30.95K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 Same-day filing | Sale Jun 3, 2026 | $25.14K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $680.54K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $1.47M Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $120.17K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $613.6K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $619.44K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $31.32K Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $1.41M Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 1-day lag | Sale Jun 2, 2026 | $282.13K Filed shares x price | SEC Form 4 View filing | |
| Kosiba John W Jr SVP, CFO & Treasurer | Jun 3, 2026 2-day lag | Award Jun 1, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Mcgahn Daniel P Chairman, President And CEO | Jun 3, 2026 2-day lag | Award Jun 1, 2026 | $0 Filed shares x price | SEC Form 4 View filing |
Dambier Laura A.
Director
Sale
Calculated transaction value
$150.52K
4,000 shares @ $37.63
Traded
Jun 11, 2026
Filed
Jun 12, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$65.98K
1,743 shares @ $37.85
Traded
Jun 11, 2026
Filed
Jun 11, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$187.6K
5,026 shares @ $37.33
Traded
Jun 11, 2026
Filed
Jun 11, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$174.46K
4,609 shares @ $37.85
Traded
Jun 11, 2026
Filed
Jun 11, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$429.05K
11,508 shares @ $37.28
Traded
Jun 11, 2026
Filed
Jun 11, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$197.38K
4,678 shares @ $42.19
Traded
Jun 8, 2026
Filed
Jun 10, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$136.37K
3,286 shares @ $41.5
Traded
Jun 8, 2026
Filed
Jun 10, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$65.6K
1,549 shares @ $42.35
Traded
Jun 8, 2026
Filed
Jun 10, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$206.61K
4,992 shares @ $41.39
Traded
Jun 8, 2026
Filed
Jun 10, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$221.69K
4,501 shares @ $49.25
Traded
Jun 3, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$154.58K
3,200 shares @ $48.31
Traded
Jun 3, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$41.66K
817 shares @ $50.99
Traded
Jun 3, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$130.01K
2,638 shares @ $49.28
Traded
Jun 3, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$341.77K
7,075 shares @ $48.31
Traded
Jun 3, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$30.95K
609 shares @ $50.83
Traded
Jun 3, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$25.14K
500 shares @ $50.29
Traded
Jun 3, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$680.54K
13,762 shares @ $49.45
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$1.47M
28,558 shares @ $51.46
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$120.17K
2,305 shares @ $52.14
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$613.6K
12,122 shares @ $50.62
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$619.44K
12,036 shares @ $51.47
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$31.32K
600 shares @ $52.19
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Sale
Calculated transaction value
$1.41M
27,900 shares @ $50.63
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Sale
Calculated transaction value
$282.13K
5,704 shares @ $49.46
Traded
Jun 2, 2026
Filed
Jun 3, 2026
Kosiba John W Jr
SVP, CFO & Treasurer
Award
Calculated transaction value
$0
30,000 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
Mcgahn Daniel P
Chairman, President And CEO
Award
Calculated transaction value
$0
60,000 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026