FolioLanternBeta
CSTLCastle Biosciences Inc

Derek Maetzold

Pres. & Chief Exec. Officer, Director at Castle Biosciences Inc, as of Oct 7, 2026Sold $11.2M of stock in the past 12 months: 100% under a disclosed plan.

Updated Oct 16, 2026 from SEC filings · covers Oct 17, 2025 to Oct 16, 2026
374K
shares sold, past 12 months
43
days with sales
$1.1M
largest single day, Aug 4, 2026
1
company filed for

Share of stake sold and shares held at Castle Biosciences Inc are being verified and not shown yet. Why

Selling by month

Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planOne dollar scale for every month; the tallest bar is labeled
Oct 2025: $30K under a disclosed planOctNov 2025: $756K under a disclosed planNovDec 2025: $1.5M under a disclosed planDecJan 2026: $316K under a disclosed planJanFeb 2026: $159K under a disclosed planFebMar 2026: $2.5M under a disclosed planMarApr 2026: $351K under a disclosed planAprMay 2026: $302K under a disclosed planMayJun 2026: $291K under a disclosed planJunJul 2026: $878K under a disclosed planJulAug 2026: $2.6M under a disclosed plan$2.6MAugSep 2026: $977K under a disclosed planSepOct 2026: $516K under a disclosed planOct

Pattern

What the filings show, past 12 months. Nothing here rates or predicts.

Roles from filings

Every company we track where this person has filed, newest filing first.

CompanyTitleFirst filingLatest filing
Castle Biosciences Inc (CSTL)Pres. & Chief Exec. Officer, DirectorJul 24, 2019Oct 7, 2026

Recent filings

The last 5 days with transactions, newest first, one line per trade date. Each number links to an SEC filing.

This page shows only what this person reported on SEC ownership filings. See the methodology. Spotted something wrong? Report an error.