Material Weakness (new) — Company identified material weakness in internal controls over Comtrafo acquisition purchase accounting during Q4 FY2025; errors in opening balance sheet went undetected due to insufficient precision in management review controls.

NASDAQ: AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ 10-K

AMSC acquires Brazil transformer maker, releases $118M tax reserve, but flags control weakness

Filed May 27, 2026 · Period ending March 31, 2026 · Compared to 10-K May 21, 2025 · ~2 min read

5 material changes detected in this filing.

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Generated by AI · May 30, 2026 2:05 AM