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Derek J Maetzold, Pres. & Chief Exec. Officer at Castle Biosciences, sold CSTL on Jul 31, 2026

Data as of Oct 16

▼ SELL$51K1,690 shares at $30.15Derek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc
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Traded
Jul 31, 2026
Disclosed
Aug 4, 2026
Filed
4 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 Jul 31, 2026TRADEDDISCLOSED
CSTLSimilar stocks (XLV — its sector index fund), rebased to CSTL's price on the disclosure day
CSTL since disclosure
+2.5%
after the sale
Similar stocks (XLV) since disclosure
+9.0%
XLV — its sector index fund

Change in closing price from Aug 4, 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$128Kdisclosed Aug 4 · filed 1 day after the trade
  2. ▼ SELLDerek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc$324Kdisclosed Aug 4 · filed 1 day after the trade
  3. ▼ SELLDerek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc$109Kdisclosed Aug 4 · filed 1 day after the trade
  4. ▼ SELLDerek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc$195Kdisclosed Aug 4 · filed 4 days after the trade
  5. ▼ SELLDerek J Maetzold Pres. & Chief Exec. OfficerCSTL Castle Biosciences Inc$59.8Kdisclosed Aug 4 · filed 4 days after the trade

See every trade on CSTL →