Derek J Maetzold Castle Biosciences Inc (CSTL) insider trading activity

Derek J Maetzold is Pres. & Chief Exec. Officer of CASTLE BIOSCIENCES INC. Currently has a direct ownership of 75,863 shares of CSTL, which is worth approximately $1.51 Million. The most recent transaction as insider was on Jan 28, 2021, when has been sold 14,375 shares (Common Stock) at a price of $68.14 per share, resulting in proceeds of $979,512. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 75.9K

6.13% 3M change

15.97% 12M change

Total Value Held $1.51 Million

DEREK J MAETZOLD Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jan 28 2021	SELL Open market or private sale	$979,512 $68.14 p/Share	14,375 Reduced 1.68%	839,135 Common Stock
Jan 27 2021	SELL Open market or private sale	$954,920 $66.42 p/Share	14,377 Reduced 1.66%	853,510 Common Stock
Jan 15 2021	SELL Open market or private sale	$1,088,051 $75.68 p/Share	14,377 Reduced 1.63%	867,887 Common Stock
Jan 14 2021	SELL Open market or private sale	$1,094,809 $76.15 p/Share	14,377 Reduced 1.6%	882,264 Common Stock
Jan 13 2021	SELL Open market or private sale	$1,058,291 $73.61 p/Share	14,377 Reduced 1.58%	896,641 Common Stock
Dec 30 2020	SELL Open market or private sale	$1,035,300 $69.02 p/Share	15,000 Reduced 1.18%	1,257,252 Common Stock
Dec 29 2020	SELL Open market or private sale	$1,032,450 $68.83 p/Share	15,000 Reduced 1.17%	1,272,252 Common Stock
Dec 18 2020	SELL Open market or private sale	$397,563 $63.61 p/Share	6,250 Reduced 0.48%	1,287,252 Common Stock
Dec 17 2020	SELL Open market or private sale	$412,937 $66.07 p/Share	6,250 Reduced 0.48%	1,293,502 Common Stock
Dec 16 2020	SELL Open market or private sale	$414,062 $66.25 p/Share	6,250 Reduced 0.48%	1,299,752 Common Stock
Dec 11 2020	SELL Open market or private sale	$903,150 $60.21 p/Share	15,000 Reduced 1.14%	1,306,002 Common Stock
Dec 10 2020	SELL Open market or private sale	$871,200 $58.08 p/Share	15,000 Reduced 1.12%	1,321,002 Common Stock
Dec 04 2020	SELL Open market or private sale	$323,438 $51.75 p/Share	6,250 Reduced 0.47%	1,336,002 Common Stock
Dec 03 2020	SELL Open market or private sale	$320,062 $51.21 p/Share	6,250 Reduced 0.46%	1,342,252 Common Stock
Dec 02 2020	SELL Open market or private sale	$313,750 $50.2 p/Share	6,250 Reduced 0.46%	1,348,502 Common Stock
Nov 23 2020	SELL Open market or private sale	$154,343 $47.49 p/Share	3,250 Reduced 0.24%	1,354,752 Common Stock
Nov 20 2020	SELL Open market or private sale	$188,523 $47.8 p/Share	3,944 Reduced 0.29%	1,358,002 Common Stock
Nov 18 2020	SELL Open market or private sale	$296,125 $47.38 p/Share	6,250 Reduced 0.46%	1,361,946 Common Stock
Nov 17 2020	SELL Open market or private sale	$308,437 $49.35 p/Share	6,250 Reduced 0.45%	1,368,196 Common Stock
Nov 16 2020	SELL Open market or private sale	$315,937 $50.55 p/Share	6,250 Reduced 0.45%	1,374,446 Common Stock
Nov 10 2020	SELL Open market or private sale	$354,881 $48.27 p/Share	7,352 Reduced 0.53%	1,380,696 Common Stock
Nov 09 2020	SELL Open market or private sale	$200,435 $49.49 p/Share	4,050 Reduced 0.29%	1,388,048 Common Stock
Nov 05 2020	SELL Open market or private sale	$324,000 $51.84 p/Share	6,250 Reduced 0.45%	1,392,098 Common Stock
Nov 04 2020	SELL Open market or private sale	$310,938 $49.75 p/Share	6,250 Reduced 0.44%	1,398,348 Common Stock
Nov 03 2020	SELL Open market or private sale	$296,125 $47.38 p/Share	6,250 Reduced 0.44%	1,404,598 Common Stock

DJM

Derek J Maetzold

Pres. & Chief Exec. Officer

Friendswood, TX

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