CASTLE BIOSCIENCES INC (CSTL) · INSIDERData sourcesSEC Form 45h ago
House PTR5h ago
SEC 13F5h ago
Robinhood Chain5h ago
Public companyCASTLE BIOSCIENCES INC
CSTLCIK 0001447362
Price$32.52
1 year-3.1%
Disclosed transactions33
Buys / sells0 / 23
Max Insider Score21
Connections with evidence6
CSTL · disclosed activity on price
| Score | Actor | Security | Side | Value | Executed | Disclosed | Lag | Source | Evidence |
|---|
| 7 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $12K 325 sh | Nov 2, 2026 |
| Nov 4, 2026 traded Nov 2, 2026 |
| 18 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $101K 2,816 sh | Nov 2, 2026 | Nov 4, 2026 traded Nov 2, 2026 | +2d | SEC Form 4 | |
| 18 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $86K 2,393 sh | Nov 2, 2026 | Nov 4, 2026 traded Nov 2, 2026 | +2d | SEC Form 4 | |
| 7 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $14K 382 sh | Nov 2, 2026 | Nov 4, 2026 traded Nov 2, 2026 | +2d | SEC Form 4 | |
| 21 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $272K 7,555 sh | Nov 2, 2026 | Nov 4, 2026 traded Nov 2, 2026 | +2d | SEC Form 4 | |
| 11 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $38K 1,025 sh | Nov 2, 2026 | Nov 4, 2026 traded Nov 2, 2026 | +2d | SEC Form 4 | |
| 6 | JWJuvenal Tobin WChief Commercial Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $44K 1,237 sh | Oct 28, 2026 | Oct 30, 2026 traded Oct 28, 2026 | +2d | SEC Form 4 | |
| 13 | JWJuvenal Tobin WChief Commercial Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $196K 5,341 sh | Oct 28, 2026 | Oct 30, 2026 traded Oct 28, 2026 | +2d | SEC Form 4 | |
| 13 | JWJuvenal Tobin WChief Commercial Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $109K 3,288 sh | Oct 26, 2026 | Oct 28, 2026 traded Oct 26, 2026 | +2d | SEC Form 4 | |
| 14 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $102K 3,198 sh | Oct 19, 2026 | Oct 21, 2026 traded Oct 19, 2026 | +2d | SEC Form 4 | |
| 17 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $274K 8,580 sh | Oct 19, 2026 | Oct 21, 2026 traded Oct 19, 2026 | +2d | SEC Form 4 | |
| 14 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $87K 2,718 sh | Oct 19, 2026 | Oct 21, 2026 traded Oct 19, 2026 | +2d | SEC Form 4 | |
| 17 | JWJuvenal Tobin WChief Commercial Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $111K 3,288 sh | Oct 12, 2026 | Oct 14, 2026 traded Oct 12, 2026 | +2d | SEC Form 4 | |
| 0 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Option exercise · 10b5-1 plan | M | — 8,165 sh | Oct 5, 2026 | Oct 7, 2026 traded Oct 5, 2026 | +2d | SEC Form 4 | |
| 14 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $114K 3,198 sh | Oct 5, 2026 | Oct 7, 2026 traded Oct 5, 2026 | +2d | SEC Form 4 | |
| 14 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $97K 2,718 sh | Oct 5, 2026 | Oct 7, 2026 traded Oct 5, 2026 | +2d | SEC Form 4 | |
| 0 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Option exercise · 10b5-1 plan | M | $20K 8,165 sh | Oct 5, 2026 | Oct 7, 2026 traded Oct 5, 2026 | +2d | SEC Form 4 | |
| 17 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $305K 8,580 sh | Oct 5, 2026 | Oct 7, 2026 traded Oct 5, 2026 | +2d | SEC Form 4 | |
| 12 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $113K 3,198 sh | Sep 21, 2026 | Sep 23, 2026 traded Sep 21, 2026 | +2d | SEC Form 4 | |
| 12 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $96K 2,718 sh | Sep 21, 2026 | Sep 23, 2026 traded Sep 21, 2026 | +2d | SEC Form 4 | |
| 0 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Option exercise · 10b5-1 plan | M | — 8,580 sh | Sep 21, 2026 | Sep 23, 2026 traded Sep 21, 2026 | +2d | SEC Form 4 | |
| 3 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Option exercise · 10b5-1 plan | M | $21K 8,580 sh | Sep 21, 2026 | Sep 23, 2026 traded Sep 21, 2026 | +2d | SEC Form 4 | |
| 15 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $303K 8,580 sh | Sep 21, 2026 | Sep 23, 2026 traded Sep 21, 2026 | +2d | SEC Form 4 | |
| 4 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $161K 4,017 sh | Jan 20, 2026 | Jan 22, 2026 traded Jan 20, 2026 | +2d | SEC Form 4 | |
| 9 | JWJuvenal Tobin WChief Commercial Officer | CSTLCASTLE BIOSCIENCES INC Grant or award | A | — 9,207 sh | Jan 12, 2026 | Jan 14, 2026 traded Jan 12, 2026 | +2d | SEC Form 4 | |
| 13 | SFStokes FrankChief Financial Officer | CSTLCASTLE BIOSCIENCES INC Grant or award | A | — 8,124 sh | Jan 12, 2026 | Jan 14, 2026 traded Jan 12, 2026 | +2d | SEC Form 4 | |
| 9 | SFStokes FrankChief Financial Officer | CSTLCASTLE BIOSCIENCES INC Grant or award | A | — 8,124 sh | Jan 12, 2026 | Jan 14, 2026 traded Jan 12, 2026 | +2d | SEC Form 4 | |
| 21 | OMOelschlager Kristen MChief Operating Officer | CSTLCASTLE BIOSCIENCES INC Grant or award | A | — 9,207 sh | Jan 12, 2026 | Jan 14, 2026 traded Jan 12, 2026 | +2d | SEC Form 4 | |
| 13 | JWJuvenal Tobin WChief Commercial Officer | CSTLCASTLE BIOSCIENCES INC Grant or award | A | — 9,207 sh | Jan 12, 2026 | Jan 14, 2026 traded Jan 12, 2026 | +2d | SEC Form 4 | |
| 9 | OMOelschlager Kristen MChief Operating Officer | CSTLCASTLE BIOSCIENCES INC Grant or award | A | — 9,207 sh | Jan 12, 2026 | Jan 14, 2026 traded Jan 12, 2026 | +2d | SEC Form 4 | |
| 5 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $7,375 237 sh | Nov 4, 2025 | Nov 6, 2025 traded Nov 4, 2025 | +2d | SEC Form 4 | |
| 4 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $85K 2,678 sh | Nov 5, 2025 | Nov 6, 2025 traded Nov 5, 2025 | +1d | SEC Form 4 | |
| 12 | MJMaetzold Derek JDirector, Pres. & Chief Exec. Officer | CSTLCASTLE BIOSCIENCES INC Open-market sale · 10b5-1 plan | SELL | $196K 6,458 sh | Nov 4, 2025 | Nov 6, 2025 traded Nov 4, 2025 | +2d | SEC Form 4 | |
Chief Commercial Officer · Jan 14, 2026
Planned sales and 5% stakes
Form 144, 13D and 13G