Welcome to our dedicated page for AMERICAN SUPERCONDUCTOR /DE/ SEC filings (Ticker: AMSC), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on AMERICAN SUPERCONDUCTOR /DE/'s stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.
Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time EDGAR feed updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into AMERICAN SUPERCONDUCTOR /DE/'s regulatory disclosures and financial reporting.
American Superconductor Corp (AMSC) filed a Form 144 reporting a proposed sale of 9,703 shares of Class A common stock through UBS Financial Services on Nasdaq with an aggregate market value of $493,451. The shares were acquired on 09/20/2016 via a non-qualified stock option issued by the company, and payment for the proposed sale is to be made by wire transfer. The filing lists 45,160,926 shares outstanding and shows no securities sold in the past three months by the seller. The filer also affirms they do not possess undisclosed material information about the issuer.
Arthur H. House, a director of American Superconductor Corporation (AMSC), filed a Form 4 reporting stock option-related activity and an open-market sale. The filing shows a transaction dated 08/06/2025 related to a $6.80 exercise-price stock option covering 9,703 shares and a sale on 08/08/2025 of 9,703 common shares at $50.9205 per share. The Form 4 states the shares were sold for tax and estate planning purposes. Following these transactions the reporting person directly holds 48,663 shares. The filing also references the Amended and Restated 2007 Director Stock Plan and provides vesting/grant timing for the option.