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Why it matters

This signal is anchored to the Form 4 disclosure date from Dataroma insider data.

Evidence

MAETZOLD DEREK J insider Form 4 disclosure for CSTL
Filed 2026-05-22 16:12:00+00 · Period end 2026-05-22 · https://www.sec.gov/Archives/edgar/data/1447362/000162828026037724/xslF345X03/wk-form4_1779480745.xml:1239501:CSTL:2026-05-21:Sale:420:8482:D

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MAETZOLD DEREK J disclosed sale in CASTLE BIOSCIENCES INC | TradingNote AI