MAETZOLD DEREK J

CSTL

MAETZOLD DEREK J serves as director, officer: Pres. & Chief Exec. Officer at Castle Biosciences, Inc. (CSTL). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

162 trades

$64.82M

Net Position

Net Seller

$64.82M

Companies Traded

CSTL

Active Period

Feb 2021 – Oct 2026

162 total trades

Most Recent

Sell CSTL

Oct 21, 2026 · $462.6K

MAETZOLD DEREK J's Insider Trading at Castle Biosciences, Inc. (CSTL)

Buys

0 · $0.00

Sells

12 · $15.29M

Total Shares Bought

Total Shares Sold

225,616

CSTL Price Chart

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Date	Type	Shares	Avg Price	Value
May 13, 2021	Sell	3,333	$50.71	$169.0K
May 11, 2021	Sell	6,666	$52.69	$351.3K
Apr 28, 2021	Sell	14,374	$68.48	$984.3K
Apr 26, 2021	Sell	28,748	$70.02	$2.01M
Apr 15, 2021	Sell	14,374	$68.38	$982.9K
Apr 13, 2021	Sell	28,748	$69.08	$1.99M
Mar 30, 2021	Sell	16,874	$60.97	$1.03M
Mar 26, 2021	Sell	26,249	$59.71	$1.57M
Mar 12, 2021	Sell	14,375	$64.30	$924.4K
Mar 10, 2021	Sell	28,750	$66.33	$1.91M
Feb 26, 2021	Sell	14,375	$75.03	$1.08M
Feb 24, 2021	Sell	28,750	$79.96	$2.30M