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Derek J Maetzold, Pres. & Chief Exec. Officer at Castle Biosciences, sold CSTL on Oct 5, 2026

Data as of Oct 16

▼ SELL$96.7K2,718 shares at $35.57Derek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc
Watch CSTL
Traded
Oct 5, 2026
Disclosed
Oct 7, 2026
Filed
2 days after the trade

Form 4s are due within two business days.

Official filing (SEC Form 4) ↗

The price around the disclosure

Derek J Maetzold, Pres. & Chief Exec. Officer at Castle Biosciences, sold CSTL on Oct 5, 2026TRADEDDISCLOSED
CSTLSimilar stocks (XLV — its sector index fund), rebased to CSTL's price on the disclosure day
CSTL since disclosure
−3.2%
after the sale
Similar stocks (XLV) since disclosure
+4.7%
XLV — its sector index fund

Change in closing price from Oct 7, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.

Our take

None of our tested rules fired on this trade.

Other trades in the same filing

  1. ▼ SELLDerek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc$114Kdisclosed Oct 7 · filed 2 days after the trade
  2. ▼ SELLDerek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc$305Kdisclosed Oct 7 · filed 2 days after the trade

See every trade on CSTL →