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SEC filing
CSTL · CIK 1447362
4 · Jun 17, 2026 · MAETZOLD DEREK J sold 4,172 shares at $20.66/share ($86,194); exercised options for 550 shares
MAETZOLD DEREK J sold 4,172 shares at $20.66/share ($86,194); exercised options for 550 shares
FORM 4