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DEREK J MAETZOLD Insider Profile

4 Followers

DEREK J MAETZOLD, Pres. & Chief Exec. Officer, Director at Castle Biosciences, holds 170.44K shares in Castle Biosciences (Ticker: CSTL).

DEREK J MAETZOLD's Trading History

CSTLCastle Biosciences		Oct 21, 2026Pres. & Chief Exec. Officer, DirectorUninformative Sell462.57K$6.33M
CSTL
Insider Shares: 170.44K (0.56%)
DateTransactionAmountNo. of SharesPrice per ShareProfitLink to Report
Oct 21, 2026Uninformative Sell$462.57K14,496$31.91―
Sep 23, 2026Uninformative Sell$512.14K14,496$35.33―
Sep 23, 2026Uninformative Buy$20.51K8,580$2.39―
Sep 15, 2026Uninformative Sell$464.87K14,518$32.02―
Sep 15, 2026Uninformative Buy$20.52K8,584$2.39―
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DEREK J MAETZOLD insider profile FAQ

What is the percentage of profitable transactions made by DEREK J MAETZOLD?
The percentage of profitable transactions made by DEREK J MAETZOLD is 100%.
What is the average return per transaction made by DEREK J MAETZOLD?
The average return per transaction made by DEREK J MAETZOLD is 52.40%.
What stocks does DEREK J MAETZOLD hold?
DEREK J MAETZOLD holds: CSTL stocks.
What was DEREK J MAETZOLD’s latest transaction?
DEREK J MAETZOLD’s latest transaction was an Uninformative Sell of $462.57K.
What was DEREK J MAETZOLD's most profitable transaction?
DEREK J MAETZOLD’s most profitable transaction was an Informative Buy of CSTL stock on July 31, 2019. The return on the trade was 97.00%.
What is DEREK J MAETZOLD's role in Castle Biosciences?
DEREK J MAETZOLD's role in Castle Biosciences is Pres. & Chief Exec. Officer, Director.
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