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| Keyboard |
| American Superconductor Corp /DE/ | |
|---|---|
| Ticker | AMSC |
| CIK # | 0000880807 |
| CUSIP | 030111108 |
| Sector | Manufacturing - Motors & Generators |
| Address | Sixty Four Jackson Road, Devens, MA 01434 |
| Source | [EDGAR] |
| Reg D Offering (Form D) | Filed | Raised | Terms |
|---|---|---|---|
| American Superconductor Corp /DE/ | 2012-04-19 | 25.0 M | Exemption: 506 · Remaining: $31,862,627 · Duration: One year or less · Commission: $1,250,000 · Revenue: Decline to Disclose |
| CIK | Filing | 2011 - 2026 |
|---|---|---|
| [0000880807] | 10-K | |
| [0000880807] | 10-Q | |
| [0000880807] | 3 | |
| [0000880807] | 4 | |
| [0000880807] | 8-K | |
| [0000880807] | D | |
| [0000880807] | SC 13G |
| Insider Transaction (Form 3/4/5) | Date | Action | Shares | Price | Value ($) |
|---|---|---|---|---|---|
|
Oliver David R Jr
Common Stock
|
2026-02-24 | Sell | 200 | $34.10 | 6,820 |
|
House Arthur H
Common Stock
|
2025-08-08 | Sell | 9,703 | $50.92 | 494,077 |
|
House Arthur H
Stock Options (Right to Buy) · derivative
|
2025-08-06 | Option exercise | 9,703 | $0.00 | |
|
House Arthur H
Common Stock
|
2025-08-06 | Option exercise | 9,703 | $6.80 | 65,980 |
|
Kosiba John W JR
Common Stock
|
2025-08-04 | Sell | 15,740 | $55.13 | 867,746 |
|
Kosiba John W JR
Common Stock
|
2025-08-04 | Sell | 34,260 | $54.34 | 1,861,688 |
|
McGahn Daniel P
Common Stock
|
2025-08-04 | Sell | 27,743 | $55.11 | 1,528,917 |
|
McGahn Daniel P
Common Stock
|
2025-08-04 | Sell | 73,105 | $54.26 | 3,966,677 |
|
Kosiba John W JR
Common Stock
|
2025-08-04 | Sell | 9,843 | $55.26 | 543,924 |
|
Kosiba John W JR
Common Stock
|
2025-06-11 | Sell | 300 | $29.08 | 8,724 |
|
McGahn Daniel P
Common Stock
|
2025-06-11 | Sell | 500 | $29.09 | 14,545 |
|
Kosiba John W JR
Common Stock
|
2025-06-11 | Sell | 6,342 | $28.55 | 181,064 |
|
McGahn Daniel P
Common Stock
|
2025-06-11 | Sell | 12,315 | $28.56 | 351,716 |
|
McGahn Daniel P
Common Stock
|
2025-06-06 | Sell | 7,689 | $31.82 | 244,664 |
|
Kosiba John W JR
Common Stock
|
2025-06-06 | Sell | 4,744 | $31.83 | 151,002 |
|
Donnelly Terence Robert
Stock Options (Right to Buy) · derivative
|
2025-05-27 | Grant | 2,112 | $0.00 | |
|
McGahn Daniel P
Common Stock
|
2025-05-27 | Sell | 24,506 | $25.55 | 626,128 |
|
McGahn Daniel P
Common Stock
|
2025-05-27 | Sell | 98,149 | $26.60 | 2,610,763 |
|
Kosiba John W JR
Common Stock
|
2025-05-27 | Sell | 39,903 | $26.61 | 1,061,819 |
|
Kosiba John W JR
Common Stock
|
2025-05-27 | Sell | 10,097 | $25.55 | 257,978 |
| showing 20 of 200 most recent transactions | |||||
| 13F Ownership Over Time | Holders | Shares Held |
|---|---|---|
| 2026-03-31 | 247 | 33,725,299 |
| 2025-12-31 | 243 | 34,104,558 |
| 2025-09-30 | 279 | 34,036,438 |
| 2025-06-30 | 235 | 35,392,373 |
| 2025-03-31 | 194 | 28,934,504 |
| 2024-12-31 | 198 | 29,384,651 |
| 2024-09-30 | 178 | 29,041,659 |
| 2024-06-30 | 161 | 28,713,341 |
| 2024-03-31 | 133 | 25,391,583 |
| 2023-12-31 | 106 | 17,611,314 |
| 2023-09-30 | 77 | 14,564,566 |
| 2023-06-30 | 79 | 13,671,219 |