MAETZOLD DEREK J (CIK 1239501) reported 209 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-06). Recent activity: Buy CSTL (6,214 shares), Sell CSTL (6,214 shares), Sell CSTL (1,357 shares), Sell CSTL (1,153 shares), Sell CSTL (278 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Buy | 6,214 | $14,851 |
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 6,214 | $150,938 |
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 1,357 | $32,962 |
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 1,153 | $28,006 |
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $6,753 |
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $6,753 |
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $6,753 |
| 2026-07-06 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $6,753 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,743 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 550 | $11,363 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 1,357 | $28,036 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 1,153 | $23,821 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Buy | 550 | $1,314 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,743 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,743 |
| 2026-06-17 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,743 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Buy | 204 | $488 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Buy | 6,010 | $14,364 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 6,214 | $129,605 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 1,357 | $28,303 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 1,153 | $24,048 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,798 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,798 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,798 |
| 2026-06-03 | CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer | Sell | 278 | $5,798 |
Source: SEC Form 4 filings · as of 2026-07-06