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  1. Home
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  3. MAETZOLD DEREK J

MAETZOLD DEREK J

CIK: 0001239501
Primary company: CASTLE BIOSCIENCES INC (CSTL)

MAETZOLD DEREK J is a corporate insider at CASTLE BIOSCIENCES INC (CSTL) filing SEC Form 4 transactions. 1,526 transactions across 2 companies, totaling $0 in purchases and $87,096,369 in sales. Source: SEC EDGAR.

Total Transactions
1,526
Total Buy Value
$0
Total Sell Value
$87.10M
Net Activity
$-87.10M
Last Transaction
Dec 2025
Companies
2

Companies

Transaction History

Source: SEC EDGAR Form 4 insider transaction filings.

Company
Type
Shares
Price
Value
Shares After
Date
SEC
CASTLE BIOSCIENCES INC
CSTL
Exercise550$2.39$1K91,881
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale278$20.66$6K12,646
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale278$20.66$6K12,646
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale278$20.66$6K12,646
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale278$20.66$6K12,646
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale1,153$20.66$24K35,755
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale1,357$20.66$28K42,067
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale550$20.66$11K21,479
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Exercise550$2.39$1K22,029
6/15/2026
Filed: 6/15/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Exercise6,214$2.39$15K754
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale41$22.59$9262,224
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale41$22.59$9262,224
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale41$22.59$9262,224
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale41$22.59$9262,224
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale168$22.59$4K39,214
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale198$22.59$4K46,138
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale906$22.59$20K21,479
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale237$22.08$5K2,265
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale237$22.08$5K2,265
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Sale237$22.08$5K2,265
5/7/2026
Filed: 5/7/2026
Filing →
CASTLE BIOSCIENCES INC
CSTL
Type
Exercise
Shares
550
Price
$2.39
Value
$1K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
278
Price
$20.66
Value
$6K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
278
Price
$20.66
Value
$6K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
278
Price
$20.66
Value
$6K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
278
Price
$20.66
Value
$6K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
1,153
Price
$20.66
Value
$24K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
1,357
Price
$20.66
Value
$28K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
550
Price
$20.66
Value
$11K
CASTLE BIOSCIENCES INC
CSTL
Type
Exercise
Shares
550
Price
$2.39
Value
$1K
CASTLE BIOSCIENCES INC
CSTL
Type
Exercise
Shares
6,214
Price
$2.39
Value
$15K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
41
Price
$22.59
Value
$926
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
41
Price
$22.59
Value
$926
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
41
Price
$22.59
Value
$926
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
41
Price
$22.59
Value
$926
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
168
Price
$22.59
Value
$4K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
198
Price
$22.59
Value
$4K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
906
Price
$22.59
Value
$20K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
237
Price
$22.08
Value
$5K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
237
Price
$22.08
Value
$5K
CASTLE BIOSCIENCES INC
CSTL
Type
Sale
Shares
237
Price
$22.08
Value
$5K
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© 2026 13F Insight — Track smart money. Ask the AI Agent.

Listed on Turbo0Featured on Findly ToolsFeatured on toolfame.comFeatured on saasfame.comFeatured on Gets.ToolsZ-ImageFeatured On Micro SaaS ExamplesListed on MarketingDBFeatured on SaasDBFeatured on FazierBusiness Services - OnToplist.comFeatured on SubmitMySaasFeatured on ToolDirsFeatured on ToolfioFeatured on Twelve ToolsListed on uno directoryFeatured on Dang.aiFeatured on ToolPilotFeatured on Startup FameFeatured on PostmakeFeatured on Code.Market