AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) is a publicly traded company in the Unknown sector. Across all available filings, 27 corporate insiders have executed 1009 transactions totaling $247.3M, demonstrating a bullish sentiment with $103.6M in net insider flow. The most recent transaction on Aug 8, 2025 involved a sale of 9,703 shares valued at $494.1K.
No significant insider buying has been recorded for AMSC in the recent period.
No significant insider selling has been recorded for AMSC in the recent period.
Based on recent SEC filings, insider sentiment for AMSC is bullish with an Insider Alignment Score of 71/100 and a net flow of $103.6M. Insiders are accumulating shares, which historically signals confidence in the company's future performance.
Insider trading at AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 27 insiders are actively trading AMSC stock, having executed 1009 transactions in the past 90 days. The most active insider is Family Trust Douglas (Executive), who has made 62 transactions totaling $106.4M.
Get notified when executives and directors at AMSC file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Aug 8, 2025 | H. House Arthur | Executive | Sale | 9,703 | $50.92 | $494.1K | |
| Aug 6, 2025 | H. House Arthur | Executive | Option Exercise | 9,703 | $6.80 | $66.0K | |
| Aug 4, 2025 | W. Kosiba John Jr | Executive | Sale | 15,740 | $55.13 | $867.7K | Large |
| Aug 4, 2025 | W. Kosiba John Jr | Executive | Sale | 34,260 | $54.34 | $1.9M | Large |
| Aug 4, 2025 | W. Kosiba John Jr | Executive | Sale | 9,843 | $55.26 | $543.9K | Large |
| Aug 4, 2025 | P. Mcgahn Daniel | Executive | Sale | 73,105 | $54.26 | $4.0M | Large |
| Aug 4, 2025 | P. Mcgahn Daniel | Executive | Sale | 27,743 | $55.11 | $1.5M | Large |
| Sep 26, 2024 | W. Kosiba John Jr | Executive | Award | 90,000 | $N/A | $0 | |
| Jun 11, 2024 | W. Kosiba John Jr | Executive | Sale | 32,000 | $21.68 | $693.8K | Large10b5-1 |
| Jun 11, 2024 | P. Mcgahn Daniel | Executive | Sale | 37,165 | $21.69 | $806.1K | Large10b5-1 |
| May 21, 2024 | P. Mcgahn Daniel | Executive | Sale | 1,620 | $15.30 | $24.8K | 10b5-1 |
| May 21, 2024 | P. Mcgahn Daniel | Executive | Sale | 18,939 | $14.78 | $279.9K | 10b5-1 |
| May 21, 2024 | W. Kosiba John Jr | Executive | Sale | 26,830 | $14.78 | $396.5K | 10b5-1 |
| May 21, 2024 | W. Kosiba John Jr | Executive | Sale | 2,170 | $15.30 | $33.2K | 10b5-1 |
| Apr 3, 2024 | R. Oliver David Jr | Executive | Award | 3,840 | $N/A | $0 |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Purchase(P) | 200 | $175.5M | 61.5% |
Sale(S) | 525 | $71.9M | 25.2% |
Exercise(M) | 60 | $27.7M | 9.7% |
Exercise (Options)(X) | 6 | $6.6M | 2.3% |
Payment(F) | 54 | $2.9M | 1.0% |
Award(A) | 144 | $597.0K | 0.2% |
Disposition(D) | 15 | $0 | 0.0% |
Gift(G) | 5 | $0 | 0.0% |
Insiders at AMERICAN SUPERCONDUCTOR CORP /DE/ are accumulating shares at an accelerated pace. With 27 insiders making 1009 transactions totaling $175.5M in purchases versus $71.9M in sales, the net buying activity of $103.6M signals strong executive confidence. Family Trust Douglas (Executive) leads the buying activity with $106.4M in transactions across all time.