4
Changes in Ownership
CASTLE BIOSCIENCES INC Filed Acc 0001628280-26-063221
Pres. & Chief Exec. Officer sold 14,496 shares at $35.33 ($512,202)
- Pres. & Chief Exec. Officer acquired 8,580 shares (option exercise)
- Traded under a Rule 10b5-1 plan
From the SEC's structured data for this filing
Trades in this filing
| Insider | Date | Transaction | Shares | Price | Value | Owned after | D/I |
|---|---|---|---|---|---|---|---|
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-09-21 | Option exercise 10b5-1 | +8,580 | $2.39 | $20,506 | 30,059 | D |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-09-21 | Sale 10b5-1 | −8,580 | $35.33 | $303,166 | 21,479 | D |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-09-21 | Sale 10b5-1 | −3,198 | $35.33 | $112,998 | 11,236 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-09-21 | Sale 10b5-1 | −2,718 | $35.33 | $96,038 | 9,550 | I |
| Derivatives | |||||||
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-09-21 | Option exercise · Stock option (right to buy) 10b5-1 | −8,580 | 8,165 | D | ||
| Open-market sales · 14,496 sh · avg $35.33 · $512,202 | |||||||
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