AMSC
insider transactionsAMERICAN SUPERCONDUCTOR CORP /DE/ — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-163.7K
0 buy · 163.7K sell
Net value · 90d
-$7.8M
$0 in · $7.8M out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
24
0 buy · 163.7K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$66.0K
1.7K sh · $37.85
Own -1%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$187.6K
5.0K sh · $37.33
Own -1%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$174.5K
4.6K sh · $37.85
Own -0%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$429.0K
11.5K sh · $37.28
Own -1%
-
Sell·S
Director
$150.5K
4.0K sh · $37.63
Own -21%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$65.6K
1.5K sh · $42.35
Own -0%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$136.4K
3.3K sh · $41.50
Own -1%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$197.4K
4.7K sh · $42.19
Own -0%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$206.6K
5.0K sh · $41.39
Own -0%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$31.0K
609 sh · $50.83
Own -0%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$130.0K
2.6K sh · $49.28
Own -1%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$154.6K
3.2K sh · $48.31
Own -1%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$41.7K
817 sh · $50.99
Own -0%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$25.1K
500 sh · $50.29
Own -0%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$221.7K
4.5K sh · $49.25
Own -0%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$341.8K
7.1K sh · $48.31
Own -1%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$31.3K
600 sh · $52.19
Own -0%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$619.4K
12.0K sh · $51.47
Own -3%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$613.6K
12.1K sh · $50.62
Own -3%
-
Sell·S
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$282.1K
5.7K sh · $49.46
Own -1%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$120.2K
2.3K sh · $52.14
Own -0%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$1.5M
28.6K sh · $51.46
Own -2%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$1.4M
27.9K sh · $50.63
Own -2%
-
Sell·S
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$680.5K
13.8K sh · $49.45
Own -1%
-
Grant·A
John W Kosiba JR KEY
SVP, CFO & Treasurer · 10b5-1
$0
30.0K sh
Own +9%
-
Grant·A
McGahn Daniel P KEY
Chairman, President and CEO · 10b5-1
$0
60.0K sh
Own +5%
-
Grant·A
Director
$0
2.7K sh
Own New
-
Grant·A
Director
$0
3.1K sh
Own +5%
-
Grant·A
Director
$0
3.1K sh
Own +10%
-
Grant·A
Director
$0
3.1K sh
Own +19%
-
Grant·A
Director
$0
3.1K sh
Own +6%
-
Grant·A
Director
$0
3.1K sh
Own +20%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 11, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 1.7K | $66.0K |
| Jun 11, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 5.0K | $187.6K |
| Jun 11, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 4.6K | $174.5K |
| Jun 11, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 11.5K | $429.0K |
| Jun 11, 2026 | Laura A. Dambier | Sell S | 4.0K | $150.5K |
| Jun 8, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 1.5K | $65.6K |
| Jun 8, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 3.3K | $136.4K |
| Jun 8, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 4.7K | $197.4K |
| Jun 8, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 5.0K | $206.6K |
| Jun 3, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 609 | $31.0K |
| Jun 3, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 2.6K | $130.0K |
| Jun 3, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 3.2K | $154.6K |
| Jun 3, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 817 | $41.7K |
| Jun 3, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 500 | $25.1K |
| Jun 3, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 4.5K | $221.7K |
| Jun 3, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 7.1K | $341.8K |
| Jun 2, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 600 | $31.3K |
| Jun 2, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 12.0K | $619.4K |
| Jun 2, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 12.1K | $613.6K |
| Jun 2, 2026 | John W Kosiba JR KEY 10b5-1 | Sell S | 5.7K | $282.1K |
| Jun 2, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 2.3K | $120.2K |
| Jun 2, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 28.6K | $1.5M |
| Jun 2, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 27.9K | $1.4M |
| Jun 2, 2026 | McGahn Daniel P KEY 10b5-1 | Sell S | 13.8K | $680.5K |
| Jun 1, 2026 | John W Kosiba JR KEY 10b5-1 | Grant A | 30.0K | $0 |
| Jun 1, 2026 | McGahn Daniel P KEY 10b5-1 | Grant A | 60.0K | $0 |
| Apr 3, 2026 | Terence Robert Donnelly | Grant A | 2.7K | $0 |
| Apr 3, 2026 | David R Oliver JR | Grant A | 3.1K | $0 |
| Apr 3, 2026 | Barbara G. Littlefield | Grant A | 3.1K | $0 |
| Apr 3, 2026 | Margaret D. Klein | Grant A | 3.1K | $0 |
| Apr 3, 2026 | Arthur H House | Grant A | 3.1K | $0 |
| Apr 3, 2026 | Laura A. Dambier | Grant A | 3.1K | $0 |
About AMSC insider trading
This page tracks insider transactions for AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.