Arthur H. House

Companies

• American SuperconductorBoard member Sep 22, 2016 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• American Superconductor AMSC51,779 shares²$1.3M at $25.59Apr 3, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Apr 3, 2026Granted 3,116 shares of American Superconductor²
• Aug 8, 2025Sold 9,703 shares at $50.92 of American Superconductor³
• Aug 6, 2025Exercised options 9,703 shares at $6.80 of American Superconductor³
• Apr 3, 2025Granted 2,639 shares of American Superconductor⁴
• Apr 3, 2024Granted 3,840 shares of American Superconductor⁵
• Apr 5, 2023Granted 11,627 shares of American Superconductor⁶
• Apr 5, 2022Granted 6,067 shares of American Superconductor⁷