Derek J. Maetzold, President & Chief Executive Officer at CASTLE BIOSCIENCES INC (CSTL), sold 39,016 shares at $30.79 ($1.2M) on 2026-08-04, disclosed to the SEC on 2026-08-06.
Scheduled sale ($1.2M) 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 | $30.79 | 2,866 | $88K | 7.3% |
| 2 | $30.79 | 3,374 | $104K | 8.6% |
| 3 | $30.79 | 8,421 | $259K | 21.4% |
| 4 | $31.34 | 4,782 | $150K | 12.4% |
| 5 | $31.34 | 11,935 | $374K | 30.9% |
| 6 | $31.34 | 4,063 |
| $127K |
| 10.5% |
| 7 | $30.68 | 2,546 | $78K | 6.4% |
| 8 | $30.68 | 473 | $15K | 1.2% |
| 9 | $30.68 | 556 | $17K | 1.4% |
| Total | $31.07 avg | 39,016 | $1.2M | 100% |
| Filing → |
| CSTL | SELL | 2026-09-01 | $588K | — | Filing → |
| CSTL | SELL | 2026-08-18 | $192K | — | Filing → |
| CSTL | SELL | 2026-08-04 | $867K | — | Filing → |