Form 4 Tracker
CASTLE BIOSCIENCES INC
CSTL

45 insider filings · Latest: Aug 4, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Aug 14, 2026Aug 14 10:50 PMFRANKLIN M. STOKES
Proposed Sale
24,908$29.77$741.5K

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Aug 14, 2026Aug 14 9:38 PMDerek Maetzold
Proposed Sale
25,792$29.62$764.0K

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Nov 24, 2025Aug 6 8:14 PMTobin W JuvenalChief Commercial Officer
Sale
1,301$38.39$49.9K77,694(D)

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Aug 5, 2026Aug 6 8:14 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
3,575$30.68$109.7K19,607(I)

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Aug 4, 2026Aug 6 8:14 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
35,441$31.11$1.1M20,080(I)

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Aug 3, 2026Aug 5 8:18 PMKristen M OelschlagerChief Operating Officer
Sale
8,586$29.77$255.6K13,288(D)

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Aug 3, 2026Aug 4 8:36 PMTobin W JuvenalChief Commercial Officer
Sale
1,730$28.25$48.9K78,995(D)

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Jul 31, 2026Aug 4 8:36 PMTobin W JuvenalChief Commercial Officer
Sale
17,310$29.31$507.3K80,725(D)

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Aug 3, 2026Aug 4 8:35 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
18,493$30.35$561.3K27,009(I)

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Jul 31, 2026Aug 4 8:35 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
10,153$30.15$306.1K30,606(I)

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Jul 31, 2026Jul 31 8:52 PMTobin Juvenal
Proposed Sale
22,500$28.00$630.0K

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Jul 31, 2026Jul 31 8:52 PMDerek Maetzold
Proposed Sale
67,662$28.00$1.9M

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Jul 27, 2026Jul 29 8:09 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
9,836$24.16$237.7K11,812(I)

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Jul 14, 2026Jul 16 8:16 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
4,172$22.92$95.6K12,090(I)

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Jul 1, 2026Jul 6 8:25 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
9,836$24.29$238.9K12,368(I)

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Jul 1, 2026Jul 6 8:24 PMKristen M OelschlagerChief Operating Officer
Sale
8,586$24.42$209.7K21,874(D)

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Jul 1, 2026Jul 1 9:35 PMDerek Maetzold
Proposed Sale
23,844$24.71$589.2K

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Jun 16, 2026Jun 18 8:19 PMKristen M OelschlagerChief Operating Officer
Sale
8,587$20.71$177.8K30,460(D)

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Jun 15, 2026Jun 17 9:39 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Sale
4,172$20.66$86.2K12,646(I)

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Jun 16, 2026Jun 16 8:35 PMKRISTEN OELSCHLAGER
Proposed Sale
29,911$20.66$618.0K

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Mar 3, 2026Mar 5 10:08 PMFrank StokesChief Financial Officer
Grant/Award
48,36748,367(D)

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