Form 4 Tracker
CASTLE BIOSCIENCES INC
CSTL

60 insider filings · Latest: Oct 12, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Sep 9, 2024Sep 9 9:18 PMDerek Maetzold
Proposed Sale
20,583$29.33$603.7K—

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Aug 23, 2024Aug 23 9:17 PMDerek Maetzold
Proposed Sale
44,380$29.57$1.3M—

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Nov 15, 2024—Stokes Frank
Proposed Sale
6,923$31.48$217.9K—

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Oct 5, 2026Oct 7 8:10 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
8,165$2.390(D)

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Oct 1, 2026Oct 5 8:07 PMKristen M OelschlagerChief Operating Officer
Option Exercise
4,153$3.388,305(D)

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Sep 21, 2026Sep 23 8:27 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
8,580$2.398,165(D)

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Sep 11, 2026Sep 15 8:08 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
8,584$2.3916,745(D)

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Sep 1, 2026Sep 3 8:07 PMKristen M OelschlagerChief Operating Officer
Option Exercise
4,152$3.3812,458(D)

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Aug 28, 2026Sep 1 8:12 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
12,428$2.3925,329(D)

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Aug 14, 2026Aug 18 8:09 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
1,100$2.3937,757(D)

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Aug 5, 2026Aug 6 8:14 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
2,546$2.3938,857(D)

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Aug 4, 2026Aug 6 8:14 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
20,356$2.3941,403(D)

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Aug 3, 2026Aug 4 8:35 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
10,664$2.3961,759(D)

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Jul 31, 2026Aug 4 8:35 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
6,480$2.3972,423(D)

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Jul 27, 2026Jul 29 8:09 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
6,214$2.3978,903(D)

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Jul 14, 2026Jul 16 8:16 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
550$2.3985,117(D)

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Jul 1, 2026Jul 6 8:25 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
6,214$2.3985,667(D)

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Jun 15, 2026Jun 17 9:39 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
550$2.3991,881(D)

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Jun 1, 2026Jun 3 8:15 PMDerek J MaetzoldDirector, Pres. & Chief Exec. Officer
Option Exercise
6,214$2.3992,431(D)

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May 28, 2026Jun 1 8:48 PMTiffany OlsonDirector
Grant/Award
11,766—11,766(D)

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May 28, 2026Jun 1 8:48 PMEllen GoldbergDirector
Grant/Award
11,766—11,766(D)

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May 28, 2026Jun 1 8:48 PMMiles HarrisonDirector
Grant/Award
11,766—11,766(D)

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May 28, 2026Jun 1 8:47 PMRodney CottonDirector
Grant/Award
11,766—11,766(D)

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