4
Changes in Ownership
CASTLE BIOSCIENCES INC Filed Acc 0001628280-26-059816
Pres. & Chief Exec. Officer sold 18,560 shares at an average $33.20 ($616,134)
- Pres. & Chief Exec. Officer acquired 12,428 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 | 2026-08-28 | Option exercise 10b5-1 | +12,428 | $2.39 | $29,703 | 33,907 | D |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −11,472 | $33.14 | $380,182 | 22,435 | D |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −2,505 | $33.14 | $83,016 | 17,850 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −2,129 | $33.14 | $70,555 | 15,172 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −257 | $33.14 | $8,517 | 11,277 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −257 | $33.14 | $8,517 | 11,277 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −257 | $33.14 | $8,517 | 11,277 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −257 | $33.14 | $8,517 | 11,277 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −956 | $33.88 | $32,389 | 21,479 | D |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −209 | $33.88 | $7,081 | 17,641 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −177 | $33.88 | $5,997 | 14,995 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −21 | $33.88 | $711 | 11,256 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −21 | $33.88 | $711 | 11,256 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −21 | $33.88 | $711 | 11,256 | I |
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Sale 10b5-1 | −21 | $33.88 | $711 | 11,256 | I |
| Derivatives | |||||||
| MAETZOLD DEREK J Pres. & Chief Exec. Officer | 2026-08-28 | Option exercise · Stock option (right to buy) 10b5-1 | −12,428 | 25,329 | D | ||
| Open-market sales · 18,560 sh · avg $33.20 · $616,134 | |||||||
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