Open Insider Trading Activity for Castle Biosciences Inc Pres. & Chief Exec. Officer Maetzold Derek J
31-day price and insider activity (up to 2 years)
Daily candles with triangles for the buy and sale transactions shown below. Scroll left or zoom out to load earlier candles (up to 2 years).
▲ Insider buy
▼ Insider sale
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10b5-1: Scheduled Form 4 Transaction CSTL | 2026-10-07 | 2026-10-05 | Castle Biosciences Inc | Maetzold Derek J | Pres. & Chief Exec. Officer | Sell | 3 | 14,496 | $35.57 | $515,564.74 | 34.20% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CSTL | 2026-06-17 | 2026-06-15 | Castle Biosciences Inc | Maetzold Derek J | Pres. & Chief Exec. Officer | Sell | 7 | 4,172 | $20.66 | $86,193.52 | 2.71% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CSTL | 2026-06-03 | 2026-06-01 | Castle Biosciences Inc | Maetzold Derek J | Pres. & Chief Exec. Officer | Sell | 7 | 9,836 | $20.86 | $205,178.96 | 8.31% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CSTL | 2026-05-22 | 2026-05-21 | Castle Biosciences Inc | Maetzold Derek J | Pres. & Chief Exec. Officer | Sell | 14 | 4,172 | $20.15 | $84,076.60 | 1.80% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CSTL | 2026-04-23 | 2026-04-21 | Castle Biosciences Inc | Maetzold Derek J | Pres. & Chief Exec. Officer | Sell | 7 | 4,172 | $25.10 | $104,717.20 | 3.38% | View Filing |