Form 4: Castle Biosciences COO Sells Shares
Insider Transaction (Form 4)
Kristen M Oelschlager, Chief Operating Officer of Castle Biosciences Inc, sold 4,153 shares of common stock on October 1, 2026.
Summary
- Option exercise/conversion: acquired 4,153 Common Stock at $3.38 ($14,037) on October 1, 2026; holds 17,509 after (Direct).
- Open-market sale: disposed of 2,807 Common Stock at $35.75 ($100,350) on October 1, 2026; holds 14,702 after (Direct).
- Open-market sale: disposed of 1,346 Common Stock at $36.38 ($48,967) on October 1, 2026; holds 13,356 after (Direct).
- Option exercise/conversion: disposed of 4,153 Stock option (right to buy) on October 1, 2026; holds 8,305 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $149,318 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Kristen M Oelschlager — Officer (Chief Operating Officer)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-10-01 | Option exercise/conversion | Common Stock | 4,153 | $3 | $14.0K | 17,509 |
| 2026-10-01 | Open-market sale | Common Stock | 2,807 | $36 | $100.4K | 14,702 |
| 2026-10-01 | Open-market sale | Common Stock | 1,346 | $36 | $49.0K | 13,356 |
| 2026-10-01 | Option exercise/conversion | Stock option (right to buy) | 4,153 | — | — | 8,305 |
Key Dates
| Date | Description |
|---|---|
| 2026-10-01 | Option exercise/conversion (4,153 shares) |
| 2026-10-01 | Open-market sale (2,807 shares) |
| 2026-10-01 | Open-market sale (1,346 shares) |
| 2026-10-01 | Option exercise/conversion (4,153 shares) |
Keywords
insider transaction, Form 4, CSTL, CASTLE BIOSCIENCES INC, bearish, Kristen M Oelschlager
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