Maetzold Derek J

Pres. &Chief Exec. Officer

1 company

Strong

Trades Analyzed

180

12M Win Rate

73.0%

Avg 3M Return

+5.9%

Avg 12M Return

+20.8%

Maetzold Derek J is a Pres. &Chief Exec. Officer at Castle Biosciences, Inc.. Recent SEC Form 4 filings include 0 buys and 19 sells.

Estimated insider holdings value: $312K based on current market prices.

Holdings by Company

CSTLJun 15, 2026

Current Shares12.6K

Value$312.2K

Net Activity-459,729

Bought: 0Sold: 459.7K

Showing 10 filings

Date	Ticker	Role	Type	Shares	Price	Value	Chg%	3M	12M
Jun 15, 2026	CSTL Castle Biosciences, Inc.	Pres. &Chief Exec. Officer	Sale+OE	4,172	$20.66	$86,193.52	-2.7%	-	-
Jan 6, 2026	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	4,017	$38.76	$155,693.56	-6.2%	-38.3%	-
Dec 22, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	830	$40.35	$33,490.50	-2.4%	-37.8%	-
Dec 17, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	509	$40.04	$20,380.36	-1.5%	-34.7%	-
Dec 16, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	32,346	$38.69	$1,251,399.69	-19.8%	-33.9%	-
Dec 4, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	1,339	$40.03	$53,600.17	-3.4%	-28.9%	-
Dec 2, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	2,678	$39.23	$105,057.94	-6.4%	-28.5%	-
Nov 26, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	4,258	$40.09	$170,703.22	-9.3%	-25.0%	-
Nov 25, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	5,115	$40.05	$204,850.64	-10.0%	-27.5%	-
Nov 18, 2025	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	2,678	$34.02	$91,105.56	-5.0%	-0.4%	-