Welcome to our dedicated page for American Superconductor 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.
Decoding American Superconductor’s filings can feel like untangling three businesses at once—wind-turbine electronics, grid reliability gear, and ship-protection systems each live in separate footnotes. If you are searching for “American Superconductor insider trading Form 4 transactions” or trying to compare backlog disclosures across segments, hundreds of pages stand between you and clarity.
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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.
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