Frank Stokes, Chief Financial Officer at CASTLE BIOSCIENCES INC (CSTL), sold 24,908 shares at $29.77 ($742K) on 2026-08-14, disclosed to the SEC on 2026-08-18.
Open-market sale of $742k CSTL by Chief Financial Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Something here stands out, but not much.
| Filing → |
| CSTL | SELL | 2025-12-15 | $337K | — | Filing → |
| CSTL | SELL | 2025-11-13 | $378K | — | Filing → |
| CSTL | SELL | 2025-02-24 | $430K | — | Filing → |