Form 4 Tracker
Derek J Maetzold

Director, Pres. & Chief Exec. Officer · 23 filings · Latest: Oct 5, 2026

CASTLE BIOSCIENCES INC
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerOct 5, 2026
Sale
$35.5714,496$515.6K6,832
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerOct 5, 2026
Option Exercise
$2.398,165$19.5K29,644
CSTL
Derek Maetzold—Oct 5, 2026
Proposed Sale
$36.6528,992$1.1M—
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerSep 21, 2026
Sale
$35.3314,496$512.2K9,550
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerSep 21, 2026
Option Exercise
$2.398,580$20.5K30,059
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerSep 11, 2026
Sale
$32.0214,518$464.9K12,268
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerSep 11, 2026
Option Exercise
$2.398,584$20.5K30,063
CSTL
Derek Maetzold—Sep 11, 2026
Proposed Sale
$32.3329,014$938.0K—
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 28, 2026
Sale
$33.2018,560$616.1K11,256
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 28, 2026
Option Exercise
$2.3912,428$29.7K33,907
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 14, 2026
Sale
$30.027,232$217.1K11,534
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 14, 2026
Option Exercise
$2.391,100$2.6K22,579
CSTL
Derek Maetzold—Aug 14, 2026
Proposed Sale
$29.6225,792$764.0K—
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 5, 2026
Sale
$30.683,575$109.7K19,607
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 5, 2026
Option Exercise
$2.392,546$6.1K24,025
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 4, 2026
Sale
$31.1135,441$1.1M20,080
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 4, 2026
Option Exercise
$2.3920,356$48.7K41,835
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 3, 2026
Sale
$30.3518,493$561.3K27,009
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerAug 3, 2026
Option Exercise
$2.3910,664$25.5K32,143
CSTL
Derek J MaetzoldDirector, Pres. & Chief Exec. OfficerJul 31, 2026
Sale
$30.1510,153$306.1K30,606

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