Derek J. Maetzold, President & Chief Executive Officer at CASTLE BIOSCIENCES INC (CSTL), sold 28,646 shares at $30.15 ($867K) on 2026-07-31, disclosed to the SEC on 2026-08-04.
Scheduled sale ($867k) by President & Chief Executive Officer under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $30.15 | 1,690 | $51K | 5.9% |
| 2 | $30.15 | 1,983 | $60K | 6.9% |
| 3 | $30.15 | 6,480 | $195K | 22.5% |
| 4 | $30.35 | 3,597 | $109K | 12.6% |
| 5 | $30.35 | 4,232 | $128K | 14.8% |
| 6 | $30.35 | 10,664 |
| $324K |
| 37.3% |
| Total | $30.28 avg | 28,646 | $867K | 100% |
| Filing → |
| CSTL | SELL | 2026-09-01 | $588K | — | Filing → |
| CSTL | SELL | 2026-08-18 | $192K | — | Filing → |
| CSTL | SELL | 2026-08-06 | $1.2M | — | Filing → |