InsidersTradesSigma
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Explore the detailed record of transactions filed by JOHN KOSIBA. Director active across 1 company, notably AMERICAN SUPERCONDUCTOR CORPORATION. Cumulatively, 4 reports have been recorded. History available since 2 June 2026. The latest transaction was disclosed on 11 June 2026 (Notice of proposed sale (Form 144)). Regulator: SEC (Form 4). The full history is free.
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