Insider · CIK 0001239501
Derek J Maetzold
Files at: CSTL. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 21, 2026 SForm 4 → | Sep 23, 4:27 pm EDT | CASTLE BIOSCIENCES INCCSTL | 14,496 | $35.33 | $512,202 | 9,550 | −60.3% | 10b5-1 |
| Sep 21, 2026 MForm 4 → | Sep 23, 4:27 pm EDT | CASTLE BIOSCIENCES INCCSTL | 8,580 | $2.39 | $20,506 | 30,059 | — | 10b5-1 |
| Sep 11, 2026 SForm 4 → | Sep 15, 4:08 pm EDT | CASTLE BIOSCIENCES INCCSTL | 14,518 | $32.02 | $464,870 | 12,268 | −54.2% | 10b5-1 |
| Sep 11, 2026 MForm 4 → | Sep 15, 4:08 pm EDT | CASTLE BIOSCIENCES INCCSTL | 8,584 | $2.39 | $20,516 | 30,063 | — | 10b5-1 |
| Aug 28, 2026 SForm 4 → | Sep 1, 4:12 pm EDT | CASTLE BIOSCIENCES INCCSTL | 18,560 | $33.20 | $616,134 | 11,256 | −62.2% | 10b5-1 |
| Aug 28, 2026 MForm 4 → | Sep 1, 4:12 pm EDT | CASTLE BIOSCIENCES INCCSTL | 12,428 | $2.39 | $29,703 | 33,907 | — | 10b5-1 |
| Aug 14, 2026 SForm 4 → | Aug 18, 4:09 pm EDT | CASTLE BIOSCIENCES INCCSTL | 7,232 | $30.02 | $217,105 | 11,534 | −38.5% | 10b5-1 |
| Aug 14, 2026 MForm 4 → | Aug 18, 4:09 pm EDT | CASTLE BIOSCIENCES INCCSTL | 1,100 | $2.39 | $2,629 | 22,579 | — | 10b5-1 |
| Aug 4, 2026 SForm 4 → | Aug 6, 4:14 pm EDT | CASTLE BIOSCIENCES INCCSTL | 39,016 | $31.07 | $1,212,230 | 19,607 | −66.6% | 10b5-1 |
| Aug 4, 2026 MForm 4 → | Aug 6, 4:14 pm EDT | CASTLE BIOSCIENCES INCCSTL | 22,902 | $2.39 | $54,736 | 24,025 | — | 10b5-1 |
| Jul 31, 2026 SForm 4 → | Aug 4, 4:35 pm EDT | CASTLE BIOSCIENCES INCCSTL | 28,646 | $30.28 | $867,451 | 27,009 | −51.5% | 10b5-1 |
| Jul 31, 2026 MForm 4 → | Aug 4, 4:35 pm EDT | CASTLE BIOSCIENCES INCCSTL | 17,144 | $2.39 | $40,974 | 32,143 | — | 10b5-1 |
| Jul 27, 2026 SForm 4 → | Jul 29, 4:09 pm EDT | CASTLE BIOSCIENCES INCCSTL | 9,836 | $24.16 | $237,682 | 11,812 | −45.4% | 10b5-1 |
| Jul 27, 2026 MForm 4 → | Jul 29, 4:09 pm EDT | CASTLE BIOSCIENCES INCCSTL | 6,214 | $2.39 | $14,851 | 27,693 | — | 10b5-1 |
| Jul 14, 2026 SForm 4 → | Jul 16, 4:16 pm EDT | CASTLE BIOSCIENCES INCCSTL | 4,172 | $22.92 | $95,622 | 12,090 | −25.7% | 10b5-1 |
| Jul 14, 2026 MForm 4 → | Jul 16, 4:16 pm EDT | CASTLE BIOSCIENCES INCCSTL | 550 | $2.39 | $1,315 | 22,029 | — | 10b5-1 |
| Jul 1, 2026 SForm 4 → | Jul 6, 4:25 pm EDT | CASTLE BIOSCIENCES INCCSTL | 9,836 | $24.29 | $238,916 | 12,368 | −44.3% | 10b5-1 |
| Jul 1, 2026 MForm 4 → | Jul 6, 4:25 pm EDT | CASTLE BIOSCIENCES INCCSTL | 6,214 | $2.39 | $14,851 | 27,693 | — | 10b5-1 |
| Jun 15, 2026 SForm 4 → | Jun 17, 5:39 pm EDT | CASTLE BIOSCIENCES INCCSTL | 4,172 | $20.66 | $86,194 | 12,646 | −24.8% | 10b5-1 |
| Jun 15, 2026 MForm 4 → | Jun 17, 5:39 pm EDT | CASTLE BIOSCIENCES INCCSTL | 550 | $2.39 | $1,315 | 22,029 | — | 10b5-1 |
| Jun 1, 2026 SForm 4 → | Jun 3, 4:15 pm EDT | CASTLE BIOSCIENCES INCCSTL | 9,836 | $20.86 | $205,149 | 1,668 | −85.5% | 10b5-1 |
| Jun 1, 2026 MForm 4 → | Jun 3, 4:15 pm EDT | CASTLE BIOSCIENCES INCCSTL | 6,214 | $2.39 | $14,851 | 27,693 | — | 10b5-1 |