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.
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American Superconductor Corporation is asking stockholders to participate in a fully virtual annual meeting on July 31, 2026, to elect seven directors, ratify RSM US LLP as auditor, and approve an advisory vote on executive compensation.
The proxy highlights strong fiscal 2025 results, with revenue of $299.2 million and net income of $133.8 million, or $3.12 per share, and describes a pay program that ties most executive compensation to non-GAAP net income, revenue, and operating expense goals, plus long-term performance-based restricted stock. It also outlines governance practices, including an independent Lead Director, board and committee structures, risk oversight, insider trading and clawback policies, and beneficial ownership, with 48,462,307 shares outstanding as of June 4, 2026.
AMERICAN SUPERCONDUCTOR CORP /DE/ director Laura A. Dambier sold shares of company stock in an open-market transaction. On the reported date, she sold 4,000 shares of Common Stock at a price of $37.63 per share. According to the footnotes, these sales were made for tax planning purposes.
Following the transaction, the reporting person holds 14,992 shares of Common Stock directly. The filing describes this as a sale in an open market or private transaction and does not show any associated derivative exercises or gifts in this report.
AMSC submitted a Form 144 notice reporting a proposed sale of 6,769 shares of Common stock through Morgan Stanley Smith Barney LLC, dated 06/10/2026. The filing also lists recent sales by John Kosiba: 30,462 shares on 06/02/2026, 6,447 shares on 06/03/2026, and 4,835 shares on 06/08/2026, with the dollar amounts shown alongside each trade.
American Superconductor SVP, CFO & Treasurer John W. Kosiba Jr. reported selling 6,769 shares of common stock on June 11, 2026 in two open-market transactions at weighted average prices of $37.33 and $37.85. According to the footnotes, these sales were made to cover tax withholding obligations tied to vesting of restricted stock awards and were executed under a pre-arranged Rule 10b5-1 trading plan. After these transactions, he holds 334,377 shares directly and 371 shares indirectly through the company 401(k) plan as of June 11, 2026.
American Superconductor (AMSC) chairman, president and CEO Daniel P. McGahn sold shares in a planned, tax-related transaction. On June 11, 2026, he sold a total of 16,117 shares of common stock in open-market trades to cover tax withholding obligations tied to vesting restricted stock awards.
The sales were executed at weighted average prices of $37.2825 and $37.8511 per share under a previously established Rule 10b5-1 trading plan adopted on August 15, 2025 and modified on February 26, 2026. After these transactions, he holds 1,131,929 shares directly and 13,344 shares indirectly through the company’s 401(k) plan as of June 11, 2026.
Daniel McGahn reported sales of Common Stock under Rule 144. The filing lists three reported transactions: 06/02/2026 sale of 72,525 shares for $3,682,892.03, 06/03/2026 sale of 12,893 shares for $630,265.28, and 06/08/2026 sale of 9,670 shares for $403,996.16. The excerpt also shows 16,117 Restricted Stock listed with 06/10/2026 and an issuer designation.
American Superconductor senior vice president, CFO and treasurer John W. Kosiba Jr. reported open-market sales of common stock that were used to cover tax withholding on vesting restricted stock awards. On June 8, 2026, he sold 3,286 shares at a weighted average price of $41.5007 and 1,549 shares at a weighted average price of $42.347, in multiple trades within disclosed price ranges. The transactions were executed under a pre-arranged Rule 10b5-1 trading plan. After these transactions, he holds 341,146 shares directly and 371 shares indirectly through the company’s 401(k) plan as of June 10, 2026.
American Superconductor Corp. Chairman, President and CEO Daniel P. McGahn reported selling a total of 9,670 shares of common stock on June 8, 2026. The sales were made at weighted average prices of $41.3891 and $42.1935 per share in open-market transactions.
According to the filing, these shares were sold to cover tax withholding obligations related to vesting of restricted stock awards and were executed under a previously established Rule 10b5-1 trading plan. After these transactions, McGahn holds 1,148,046 shares directly and 13,344 shares indirectly through the company’s 401(k) plan as of June 10, 2026.
Charles Schwab Corporation filed a Form 144 notice concerning common stock tied to prior restricted stock awards. The filing lists a 2,639-share restricted award dated 04/11/2025 and a 1,361-share restricted award dated 04/12/2024. The filing lists Nasdaq as the market and shows the date 06/10/2026 in the securities section.