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Insider trades
Open-market buys and sells by officers, directors and 10% owners, from SEC Form 4. Usually filed within two business days.
About this data
- What it is
- When a company's officers, directors or owners of more than 10% buy or sell its stock, they must report the trade to the SEC on Form 4. This feed shows purchases and sales on the open market; stock grants, option exercises and shares withheld for tax are left out.
- Who files it
- The insider, usually through the company, within two business days of the trade.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- Sales are often routine: insiders sell to diversify, to pay taxes, or under a 10b5-1 plan set up months in advance. A purchase with their own money is less common, which is why many investors pay closer attention to it.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Open-market trades per day, last 30 days
Purchases Sales
By trade date. Insiders have two business days to file, so the most recent days fill in later.
Latest open-market insider trades
Showing: ticker AMSC
| Traded | Insider | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Jun 11, 2026 | Laura A. Dambier Director | AMSC American Superconductor Corporation | Sale | 4,000 | $37.63 | $150.5K Sale | Form 4 ↗ |
| Jun 11, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 1,743 | $37.85 | $66.0K Sale | Form 4 ↗ |
| Jun 11, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 5,026 | $37.33 | $187.6K Sale | Form 4 ↗ |
| Jun 11, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 4,609 | $37.85 | $174.5K Sale | Form 4 ↗ |
| Jun 11, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 11,508 | $37.28 | $429.0K Sale | Form 4 ↗ |
| Jun 8, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 1,549 | $42.35 | $65.6K Sale | Form 4 ↗ |
| Jun 8, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 3,286 | $41.50 | $136.4K Sale | Form 4 ↗ |
| Jun 8, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 4,678 | $42.19 | $197.4K Sale | Form 4 ↗ |
| Jun 8, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 4,992 | $41.39 | $206.6K Sale | Form 4 ↗ |
| Jun 3, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 609 | $50.83 | $31.0K Sale | Form 4 ↗ |
| Jun 3, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 2,638 | $49.28 | $130.0K Sale | Form 4 ↗ |
| Jun 3, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 3,200 | $48.31 | $154.6K Sale | Form 4 ↗ |
| Jun 3, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 817 | $50.99 | $41.7K Sale | Form 4 ↗ |
| Jun 3, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 500 | $50.29 | $25.1K Sale | Form 4 ↗ |
| Jun 3, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 4,501 | $49.25 | $221.7K Sale | Form 4 ↗ |
| Jun 3, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 7,075 | $48.31 | $341.8K Sale | Form 4 ↗ |
| Jun 2, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 600 | $52.19 | $31.3K Sale | Form 4 ↗ |
| Jun 2, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 12,036 | $51.47 | $619.5K Sale | Form 4 ↗ |
| Jun 2, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 12,122 | $50.62 | $613.6K Sale | Form 4 ↗ |
| Jun 2, 2026 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 5,704 | $49.46 | $282.1K Sale | Form 4 ↗ |
| Jun 2, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 2,305 | $52.14 | $120.2K Sale | Form 4 ↗ |
| Jun 2, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 28,558 | $51.46 | $1.5M Sale | Form 4 ↗ |
| Jun 2, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 27,900 | $50.63 | $1.4M Sale | Form 4 ↗ |
| Jun 2, 2026 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 13,762 | $49.45 | $680.5K Sale | Form 4 ↗ |
| Feb 24, 2026 | David R. Oliver Jr. Director | AMSC American Superconductor Corporation | Sale | 200 | $34.10 | $6,820 Sale | Form 4 ↗ |
| Aug 8, 2025 | Arthur H. House Director | AMSC American Superconductor Corporation | Sale | 9,703 | $50.92 | $494.1K Sale | Form 4 ↗ |
| Aug 4, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 27,743 | $55.11 | $1.5M Sale | Form 4 ↗ |
| Aug 4, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 73,105 | $54.26 | $4.0M Sale | Form 4 ↗ |
| Aug 4, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 9,843 | $55.26 | $543.9K Sale | Form 4 ↗ |
| Aug 4, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 15,740 | $55.13 | $867.7K Sale | Form 4 ↗ |
| Aug 4, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 34,260 | $54.34 | $1.9M Sale | Form 4 ↗ |
| Jun 11, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 500 | $29.09 | $14.5K Sale | Form 4 ↗ |
| Jun 11, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 12,315 | $28.56 | $351.7K Sale | Form 4 ↗ |
| Jun 11, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 300 | $29.08 | $8,724 Sale | Form 4 ↗ |
| Jun 11, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 6,342 | $28.55 | $181.1K Sale | Form 4 ↗ |
| Jun 6, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 4,744 | $31.83 | $151.0K Sale | Form 4 ↗ |
| Jun 6, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 7,689 | $31.82 | $244.7K Sale | Form 4 ↗ |
| May 27, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 98,149 | $26.60 | $2.6M Sale | Form 4 ↗ |
| May 27, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 24,506 | $25.55 | $626.1K Sale | Form 4 ↗ |
| May 27, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 39,903 | $26.61 | $1.1M Sale | Form 4 ↗ |
| May 27, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 10,097 | $25.55 | $258.0K Sale | Form 4 ↗ |
| May 20, 2025 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 11,860 | $24.50 | $290.6K Sale | Form 4 ↗ |
| May 20, 2025 | Daniel P. McGahn Chairman, President and CEO, Director | AMSC American Superconductor Corporation | Sale | 12,815 | $24.49 | $313.8K Sale | Form 4 ↗ |
| Nov 4, 2024 | John W. Kosiba Jr. SVP, CFO & Treasurer | AMSC American Superconductor Corporation | Sale | 50,000 | $28.28 | $1.4M Sale | Form 4 ↗ |
| Aug 4, 2022 | Margaret D. Klein Director | AMSC American Superconductor Corporation | Buy | 500 | $5.57 | $2,785 Buy | Form 4 ↗ |
| Jun 18, 2019 | David R. Oliver Jr. Director | AMSC American Superconductor Corporation | Buy | 200 | $8.33 | $1,666 Buy | Form 4 ↗ |
46 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 4:50 PM EST.
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