AMSC Q1 FY27: Revenue +30% to $94.1M on Comtrafo; gross margin falls 800bp; controls ineffective

Filed August 5, 2026 · Period ending June 30, 2026 · Compared to 10-Q Jul 30, 2025 · ~2 min read

Key Changes

• high

  Disclosure controls now ineffective due to material weakness in Comtrafo acquisition accounting; errors in opening balance sheet went undetected, remediation underway.

  Controls & Procedures verify on EDGAR →
• high

  Gross margin compressed to 26% from 34% (-800bp) driven by unfavorable product mix and $1.2M in Comtrafo purchase accounting charges (backlog amortization, inventory step-up).

  MD&A: Gross Margin verify on EDGAR →
• high

  Grid segment swung to $2.2M operating loss from $4.2M income YoY; consolidated operating income rose 74% to $9.8M on $8.1M non-cash gain from Comtrafo earnout revaluation.

  MD&A: Segment Results verify on EDGAR →