Trade Summary

3 days ago, Kosiba John W JR, serving as SVP, CFO & Treasurer at AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC), sold 36,909 shares at $50.45 per share, for a total transaction value of $1,862,034.20. Following this transaction, Kosiba John W JR now holds 345,981 shares of AMSC.

This sale represents a 9.64% decrease in Kosiba John W JR's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Tuesday, June 2, 2026 and publicly disclosed via SEC Form 4 filing on Wednesday, June 3, 2026 at 4:15 PM ET, 1 day after the trade was made.

AMERICAN SUPERCONDUCTOR CORP /DE/ operates in the INDUSTRIALS sector, specifically within the SPECIALTY INDUSTRIAL MACHINERY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.