Derek J. Maetzold, President & Chief Executive Officer at CASTLE BIOSCIENCES INC (CSTL), sold 3,338 shares at $20.00 ($67K) on 2026-05-20, disclosed to the SEC on 2026-05-22.
Scheduled sale ($67k) 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 | $20.00 | 66 | $1K | 2.0% |
| 2 | $20.00 | 130 | $3K | 3.9% |
| 3 | $20.00 | 273 | $5K | 8.1% |
| 4 | $20.00 | 322 | $6K | 9.6% |
| 5 | $20.20 | 212 | $4K | 6.4% |
| 6 | $20.20 | 420 |
| $8K |
| 12.6% |
| 7 | $20.20 | 880 | $18K | 26.4% |
| 8 | $20.20 | 1,035 | $21K | 31.1% |
| Total | $20.15 avg | 3,338 | $67K | 100% |
| Filing → |
| CSTL | SELL | 2026-09-01 | $588K | — | Filing → |
| CSTL | SELL | 2026-08-18 | $192K | — | Filing → |
| CSTL | SELL | 2026-08-06 | $1.2M | — | Filing → |