AMSC
American Superconductor Corporation$40.34+0.86 (+2.18%)Prev Close$39.51·MCap$1.75B·P/E7.39·Vol553.1K·Yield—
▲
Buys (12M)
0
$0.00
▼
Sells (12M)
9
$10.88M
◆
Net Activity
Net Seller
$10.88M
●
Active Insiders
5
last 12 mo
Over the past 12 months, insider activity at American Superconductor Corporation (AMSC) has been exclusively selling, with 0 insider purchases totaling $0.00 and 9 insider sales totaling $10.88M. The most recent insider transaction was by Dambier Laura A. (director), who sold $150.5K worth of shares on Jun 12, 2026. American Superconductor Corporation operates in the Industrials sector, within the Industrial - Machinery industry, with a market cap of $1.75B.
AMSC Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | Dambier Laura A. | director | Sell | 4,000 | $37.63 | $150.5K | 14,992 |
| Jun 11, 2026 | McGahn Daniel P | director, officer: Chairman, President and CEO | Sell | 16,117 | $37.45 | $603.5K | 1,136,538 |
| Jun 11, 2026 | Kosiba John W JR | officer: SVP, CFO & Treasurer | Sell | 6,769 | $37.46 | $253.6K | 336,120 |
| Jun 10, 2026 | McGahn Daniel P | director, officer: Chairman, President and CEO | Sell | 9,670 | $41.78 | $404.0K | 1,152,724 |
| Jun 10, 2026 | Kosiba John W JR | officer: SVP, CFO & Treasurer | Sell | 4,835 | $41.77 | $202.0K | 342,695 |
| Feb 26, 2026 | OLIVER DAVID R JR | director | Sell | 200 | $34.10 | $6.8K | 60,707 |
| Aug 6, 2025 | House Arthur H | Director | Sell | 9,703 | $50.92 | $494.1K | 0 |
| Aug 4, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 59,843 | $54.70 | $3.27M | 0 |
| Aug 4, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 100,848 | $54.49 | $5.50M | 0 |
| Jun 11, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 6,642 | $28.57 | $189.8K | 0 |
| Jun 11, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 12,815 | $28.58 | $366.2K | 0 |
| Jun 6, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 4,744 | $31.83 | $151.0K | 0 |
| Jun 6, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 7,689 | $31.82 | $244.7K | 0 |
| May 27, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 50,000 | $26.40 | $1.32M | 0 |
| May 27, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 122,655 | $26.39 | $3.24M | 0 |
| May 20, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 11,860 | $24.50 | $290.5K | 0 |
| May 20, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 12,815 | $24.49 | $313.9K | 0 |
| Nov 4, 2024 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 50,000 | $28.28 | $1.41M | 0 |
| Jun 11, 2024 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 32,000 | $21.68 | $693.8K | 0 |
| Jun 11, 2024 | McGahn Daniel P | Chairman, President and CEO | Sell | 37,165 | $21.69 | $806.0K | 0 |
| May 21, 2024 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 29,000 | $14.82 | $429.8K | 0 |
| May 21, 2024 | McGahn Daniel P | Chairman, President and CEO | Sell | 20,559 | $14.82 | $304.7K | 0 |
| Jun 21, 2023 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 80,010 | $6.08 | $486.3K | 0 |
| Jun 21, 2023 | McGahn Daniel P | Chairman, President and CEO | Sell | 110,704 | $6.08 | $672.9K | 0 |
| Dec 16, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Buy | 15,000 | $3.50 | $52.5K | 0 |
| Dec 16, 2022 | McGahn Daniel P | Chairman, President and CEO | Buy | 25,000 | $3.49 | $87.3K | 0 |
| Dec 12, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Buy | 25,000 | $3.34 | $83.4K | 0 |
| Aug 4, 2022 | Klein Margaret D. | Director | Buy | 500 | $5.57 | $2.8K | 0 |
| Jun 10, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 8,473 | $5.97 | $50.6K | 0 |
| Jun 10, 2022 | McGahn Daniel P | Chairman, President and CEO | Sell | 32,587 | $5.98 | $194.8K | 0 |
| May 31, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 13,325 | $5.45 | $72.7K | 0 |
| May 31, 2022 | McGahn Daniel P | Chairman, President and CEO | Sell | 21,725 | $5.45 | $118.5K | 0 |
| Dec 10, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 22,754 | $11.31 | $257.4K | 0 |
| Dec 8, 2021 | BUDHRAJA VIKRAM S | Director | Sell | 3,000 | $11.98 | $35.9K | 0 |
| Nov 1, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 11,008 | $18.85 | $207.5K | 0 |
| Nov 1, 2021 | McGahn Daniel P | Chairman, President and CEO | Sell | 7,241 | $18.96 | $137.3K | 0 |
| Jul 1, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 6,409 | $17.66 | $113.2K | 0 |
| Jul 1, 2021 | McGahn Daniel P | Chairman, President and CEO | Sell | 14,664 | $17.66 | $259.0K | 0 |
| May 20, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 5,794 | $14.18 | $82.1K | 0 |
| May 20, 2021 | McGahn Daniel P | Chairman, President and CEO | Sell | 8,690 | $14.19 | $123.3K | 0 |
AMSC Insider Buying Activity
The following table shows recent insider purchases of American Superconductor Corporation (AMSC) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Dec 16, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Buy | 15,000 | $3.50 | $52.5K | 0 |
| Dec 16, 2022 | McGahn Daniel P | Chairman, President and CEO | Buy | 25,000 | $3.49 | $87.3K | 0 |
| Dec 12, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Buy | 25,000 | $3.34 | $83.4K | 0 |
| Aug 4, 2022 | Klein Margaret D. | Director | Buy | 500 | $5.57 | $2.8K | 0 |
AMSC Insider Selling Activity
The following table shows recent insider sales of American Superconductor Corporation (AMSC) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | Dambier Laura A. | director | Sell | 4,000 | $37.63 | $150.5K | 14,992 |
| Jun 11, 2026 | McGahn Daniel P | director, officer: Chairman, President and CEO | Sell | 16,117 | $37.45 | $603.5K | 1,136,538 |
| Jun 11, 2026 | Kosiba John W JR | officer: SVP, CFO & Treasurer | Sell | 6,769 | $37.46 | $253.6K | 336,120 |
| Jun 10, 2026 | McGahn Daniel P | director, officer: Chairman, President and CEO | Sell | 9,670 | $41.78 | $404.0K | 1,152,724 |
| Jun 10, 2026 | Kosiba John W JR | officer: SVP, CFO & Treasurer | Sell | 4,835 | $41.77 | $202.0K | 342,695 |
| Feb 26, 2026 | OLIVER DAVID R JR | director | Sell | 200 | $34.10 | $6.8K | 60,707 |
| Aug 6, 2025 | House Arthur H | Director | Sell | 9,703 | $50.92 | $494.1K | 0 |
| Aug 4, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 59,843 | $54.70 | $3.27M | 0 |
| Aug 4, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 100,848 | $54.49 | $5.50M | 0 |
| Jun 11, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 6,642 | $28.57 | $189.8K | 0 |
| Jun 11, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 12,815 | $28.58 | $366.2K | 0 |
| Jun 6, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 4,744 | $31.83 | $151.0K | 0 |
| Jun 6, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 7,689 | $31.82 | $244.7K | 0 |
| May 27, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 50,000 | $26.40 | $1.32M | 0 |
| May 27, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 122,655 | $26.39 | $3.24M | 0 |
| May 20, 2025 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 11,860 | $24.50 | $290.5K | 0 |
| May 20, 2025 | McGahn Daniel P | Chairman, President and CEO | Sell | 12,815 | $24.49 | $313.9K | 0 |
| Nov 4, 2024 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 50,000 | $28.28 | $1.41M | 0 |
| Jun 11, 2024 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 32,000 | $21.68 | $693.8K | 0 |
| Jun 11, 2024 | McGahn Daniel P | Chairman, President and CEO | Sell | 37,165 | $21.69 | $806.0K | 0 |
| May 21, 2024 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 29,000 | $14.82 | $429.8K | 0 |
| May 21, 2024 | McGahn Daniel P | Chairman, President and CEO | Sell | 20,559 | $14.82 | $304.7K | 0 |
| Jun 21, 2023 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 80,010 | $6.08 | $486.3K | 0 |
| Jun 21, 2023 | McGahn Daniel P | Chairman, President and CEO | Sell | 110,704 | $6.08 | $672.9K | 0 |
| Jun 10, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 8,473 | $5.97 | $50.6K | 0 |
| Jun 10, 2022 | McGahn Daniel P | Chairman, President and CEO | Sell | 32,587 | $5.98 | $194.8K | 0 |
| May 31, 2022 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 13,325 | $5.45 | $72.7K | 0 |
| May 31, 2022 | McGahn Daniel P | Chairman, President and CEO | Sell | 21,725 | $5.45 | $118.5K | 0 |
| Dec 10, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 22,754 | $11.31 | $257.4K | 0 |
| Dec 8, 2021 | BUDHRAJA VIKRAM S | Director | Sell | 3,000 | $11.98 | $35.9K | 0 |
| Nov 1, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 11,008 | $18.85 | $207.5K | 0 |
| Nov 1, 2021 | McGahn Daniel P | Chairman, President and CEO | Sell | 7,241 | $18.96 | $137.3K | 0 |
| Jul 1, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 6,409 | $17.66 | $113.2K | 0 |
| Jul 1, 2021 | McGahn Daniel P | Chairman, President and CEO | Sell | 14,664 | $17.66 | $259.0K | 0 |
| May 20, 2021 | Kosiba John W JR | SVP, CFO & Treasurer | Sell | 5,794 | $14.18 | $82.1K | 0 |
| May 20, 2021 | McGahn Daniel P | Chairman, President and CEO | Sell | 8,690 | $14.19 | $123.3K | 0 |
AMSC Insiders
McGahn Daniel P
director, officer: Chairman, President and CEO
Bought $87.3KSold $13.28M
16 tradesLast: Jun 11, 2026
Similar Stocks to AMSC
EMR
Emerson Electric Co.
$143.08+0.70%
$77.36B
ITW
Illinois Tool Works Inc.
$256.38+0.76%
$72.71B
CARR
Carrier Global Corporation
$69.36-0.54%
$55.78B
ROK
Rockwell Automation, Inc.
$458.31+0.16%
$49.71B
IR
Ingersoll Rand Inc.
$73.50+0.42%
$28.27B
SYM
Symbotic Inc.
$42.04-1.76%
$28.25B
OTIS
Otis Worldwide Corporation
$70.61+0.68%
$26.99B
XYL
Xylem Inc.
$109.64+0.54%
$26.13B