Company · CIK 0001447362 · SIC 8071 — Services-Medical Laboratories · Nasdaq
CASTLE BIOSCIENCES INC · CSTL
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 21, 2026 SForm 4 → | Sep 23, 4:27 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 14,496 | $35.33 | $512,202 | 9,550 | −60.3% | 10b5-1 |
| Sep 21, 2026 MForm 4 → | Sep 23, 4:27 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 8,580 | $2.39 | $20,506 | 30,059 | — | 10b5-1 |
| Sep 14, 2026 SForm 4 → | Sep 16, 4:20 pm EDT | Tobin W JuvenalChief Commercial Officer | 6,600 | $33.73 | $222,621 | 58,584 | −10.1% | 10b5-1 |
| Sep 11, 2026 SForm 4 → | Sep 15, 4:08 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 14,518 | $32.02 | $464,870 | 12,268 | −54.2% | 10b5-1 |
| Sep 11, 2026 MForm 4 → | Sep 15, 4:08 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 8,584 | $2.39 | $20,516 | 30,063 | — | 10b5-1 |
| Sep 1, 2026 SForm 4 → | Sep 3, 4:07 pm EDT | Kristen M OelschlagerChief Operating Officer | 4,152 | $33.39 | $138,643 | 13,356 | −23.7% | 10b5-1 |
| Sep 1, 2026 MForm 4 → | Sep 3, 4:07 pm EDT | Kristen M OelschlagerChief Operating Officer | 4,152 | $3.38 | $14,034 | 17,508 | — | 10b5-1 |
| Aug 31, 2026 SForm 4 → | Sep 2, 4:07 pm EDT | Tobin W JuvenalChief Commercial Officer | 1,730 | $32.81 | $56,761 | 65,184 | −2.59% | 10b5-1 |
| Aug 28, 2026 SForm 4 → | Sep 1, 4:12 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 18,560 | $33.20 | $616,134 | 11,256 | −62.2% | 10b5-1 |
| Aug 28, 2026 MForm 4 → | Sep 1, 4:12 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 12,428 | $2.39 | $29,703 | 33,907 | — | 10b5-1 |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 21, 2026 MForm 4 → | Sep 23, 4:27 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 8,580 | — | — | 8,165 | — | 10b5-1 |
| Sep 11, 2026 MForm 4 → | Sep 15, 4:08 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 8,584 | — | — | 16,745 | — | 10b5-1 |
| Sep 1, 2026 MForm 4 → | Sep 3, 4:07 pm EDT | Kristen M OelschlagerChief Operating Officer | 4,152 | — | — | 12,458 | — | 10b5-1 |
| Aug 28, 2026 MForm 4 → | Sep 1, 4:12 pm EDT | Derek J MaetzoldPres. & Chief Exec. Officer, Director | 12,428 | — | — | 25,329 | — | 10b5-1 |