Derek J. Maetzold, President & Chief Executive Officer at CASTLE BIOSCIENCES INC (CSTL), sold 17,726 shares at $33.14 ($588K) on 2026-08-28, disclosed to the SEC on 2026-09-01.
Scheduled sale ($588k) 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 | $33.14 | 257 | $9K | 1.4% |
| 2 | $33.14 | 2,129 | $71K | 12.0% |
| 3 | $33.14 | 2,505 | $83K | 14.1% |
| 4 | $33.14 | 11,472 | $380K | 64.6% |
| 5 | $33.88 | 956 | $32K | 5.5% |
| 6 | $33.88 | 177 |
| $6K |
| 1.0% |
| 7 | $33.88 | 209 | $7K | 1.2% |
| 8 | $33.88 | 21 | $711 | 0.1% |
| Total | $33.20 avg | 17,726 | $588K | 100% |
| Filing → |
| CSTL | SELL | 2026-08-18 | $192K | — | Filing → |
| CSTL | SELL | 2026-08-06 | $1.2M | — | Filing → |
| CSTL | SELL | 2026-08-04 | $867K | — | Filing → |