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 91,732 shares of CSTL, which is worth approximately $3.07 Million. The most recent transaction as insider was on Sep 29, 2021, when has been sold 10,000 shares (Common Stock) at a price of $66.25 per share, resulting in proceeds of $662,500. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 91.7K

42.6% 3M change

13.5% 12M change

Total Value Held $3.07 Million

DEREK J MAETZOLD Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Sep 29 2021	SELL Open market or private sale	$662,500 $66.25 p/Share	10,000 Reduced 3.27%	296,018 Common Stock
Sep 28 2021	SELL Open market or private sale	$674,200 $67.42 p/Share	10,000 Reduced 3.16%	306,018 Common Stock
Sep 15 2021	SELL Open market or private sale	$742,300 $74.23 p/Share	10,000 Reduced 3.07%	316,018 Common Stock
Sep 14 2021	SELL Open market or private sale	$749,900 $74.99 p/Share	10,000 Reduced 2.98%	326,018 Common Stock
Sep 13 2021	SELL Open market or private sale	$728,800 $72.88 p/Share	10,000 Reduced 2.89%	336,018 Common Stock
Aug 31 2021	SELL Open market or private sale	$755,300 $75.53 p/Share	10,000 Reduced 2.81%	346,018 Common Stock
Aug 30 2021	SELL Open market or private sale	$751,800 $75.18 p/Share	10,000 Reduced 2.73%	356,018 Common Stock

Aug 27 2021	SELL Open market or private sale	$742,000 $74.2 p/Share	10,000 Reduced 2.66%	366,018 Common Stock
Aug 18 2021	SELL Open market or private sale	$274,474 $61.13 p/Share	4,490 Reduced 1.18%	376,018 Common Stock
Aug 17 2021	SELL Open market or private sale	$326,412 $59.24 p/Share	5,510 Reduced 1.43%	380,508 Common Stock
Aug 16 2021	SELL Open market or private sale	$615,900 $61.59 p/Share	10,000 Reduced 2.53%	386,018 Common Stock
Aug 13 2021	SELL Open market or private sale	$651,900 $65.19 p/Share	10,000 Reduced 2.46%	396,018 Common Stock
Jul 21 2021	SELL Open market or private sale	$676,700 $67.67 p/Share	10,000 Reduced 2.4%	406,018 Common Stock
Jul 20 2021	SELL Open market or private sale	$663,500 $66.35 p/Share	10,000 Reduced 2.35%	416,018 Common Stock
Jul 19 2021	SELL Open market or private sale	$648,500 $64.85 p/Share	10,000 Reduced 2.29%	426,018 Common Stock
Jul 09 2021	SELL Open market or private sale	$721,100 $72.11 p/Share	10,000 Reduced 2.24%	436,018 Common Stock
Jul 08 2021	SELL Open market or private sale	$691,700 $69.17 p/Share	10,000 Reduced 2.19%	446,018 Common Stock
Jul 07 2021	SELL Open market or private sale	$705,000 $70.5 p/Share	10,000 Reduced 2.15%	456,018 Common Stock
Jun 24 2021	SELL Open market or private sale	$751,200 $75.12 p/Share	10,000 Reduced 2.1%	466,018 Common Stock
Jun 23 2021	SELL Open market or private sale	$753,600 $75.36 p/Share	10,000 Reduced 2.06%	476,018 Common Stock
Jun 22 2021	SELL Open market or private sale	$745,600 $74.56 p/Share	10,000 Reduced 2.02%	486,018 Common Stock
Jun 10 2021	SELL Open market or private sale	$701,400 $70.14 p/Share	10,000 Reduced 1.98%	496,018 Common Stock
Jun 09 2021	SELL Open market or private sale	$723,900 $72.39 p/Share	10,000 Reduced 1.94%	506,018 Common Stock
Jun 08 2021	SELL Open market or private sale	$699,400 $69.94 p/Share	10,000 Reduced 1.9%	516,018 Common Stock
Jun 01 2021	SELL Open market or private sale	$144,939 $59.45 p/Share	2,438 Reduced 0.46%	526,018 Common Stock

DJM

Derek J Maetzold

Pres. & Chief Exec. Officer

Friendswood, TX

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