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 119 sells.

Estimated insider holdings value: $1.9M based on current market prices.

Holdings by Company

CSTLJan 12, 2026

Current Shares91.7K

Value$1.90M

Net Activity-456,298

Bought: 0Sold: 456.3K

Showing 10 filings (page 6)

Date	Ticker	Role	Type	Shares	Price	Value	Chg%	3M	12M
Dec 19, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	16,251	$20.59	$334,542.10	-2.4%	-10.1%	+25.8%
Dec 15, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	20,455	$20.74	$424,328.96	-1.9%	-3.8%	+43.8%
Dec 13, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	8,432	$20.19	$170,250.72	-1.1%	-2.9%	+41.7%
Dec 8, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sale+OE	4,852	$20.10	$97,525.20	-1.4%	+2.9%	+54.6%
Dec 6, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	100	$20.02	$2,002.00	-	+14.6%	+65.3%
Dec 4, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	9,644	$20.07	$193,516.30	-1.4%	+6.4%	+54.3%
Nov 30, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	21,429	$20.10	$430,800.27	-2.9%	+22.0%	+51.5%
Nov 24, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	600	$20.03	$12,018.00	-0.2%	+22.5%	+49.9%
Nov 21, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	5,610	$20.03	$112,376.88	-0.7%	+29.5%	+46.8%
Sep 1, 2023	CSTL Castle Biosciences Inc	Pres. &Chief Exec. Officer	Sell	1,500	$20.05	$30,078.00	-0.4%	+1.7%	+50.9%