Laura A. Dambier, an insider of American Superconductor Corp. (AMSC), reported a recent change in her ownership of the company’s common stock through a Form 4 filing dated June 12, 2026. The transaction occurred on June 11, 2026, the report date for the filing. The filing reports a sale of 4,000 shares of American Superconductor common stock at a price of $37.63 per share. Based on the reported price and share count, the sale had an aggregate value of approximately $150,520 before any commissions, taxes, or other expenses. The document states that the sales were made by the reporting person “for tax planning purposes.” After completing all transactions reported in the filing, Dambier directly owned 14,992 shares of AMSC common stock. The filing text does not provide additional vesting details, option exercises, derivative securities transactions, or equity award information. It also does not show a transaction code in the provided excerpt, though the narrative note characterizes the reported activity as sales. The filing was signed on Dambier’s behalf by John R. Samia, acting as attorney-in-fact, on June 12, 2026. The transaction is notable as an insider sale by a company-affiliated reporting person, while the explanatory note indicates the stated purpose was tax planning rather than a disclosed change in investment outlook.
Stock detail
American Superconductor (AMSC) stock price, chart, and key data
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Stock detail
American Superconductor
AMSC · XNAS
+$6.02 (+17.86%) past day
$39.73
Overnight $39.63 (-0.25%)
Key metrics
Earnings
Quarterly results and the next expected release
FY26 Q1
Q2
Q3
Q4
FY27 Q1
Q2
Day range
$30.32 - $33.71
52-week range
$24.87 - $70.49
Close price
$33.00
Market cap
$1.6B
P/E ratio
13.03
Beta
3.22
About the company
AMERICAN SUPERCONDUCTOR
American Superconductor Corporation is an American energy technologies company headquartered in Ayer, Massachusetts. The firm specializes in using superconductors for the development of diverse power systems, including but not limited to superconducting wire. The company operates across three primary business segments: production of high-temperature superconductor wire, which has a significantly higher electrical current capacity than copper wire; development of HTS-based motors and generators; and design and manufacturing of power electronic systems for wind farms and transmission systems. AMSC employs superconductors in the construction of ship protection systems. The company has a subsidiary, AMSC Windtec, located in Klagenfurt, Austria.
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