Tobin W Juvenal Castle Biosciences Inc (CSTL) insider trading activity

Tobin W Juvenal is Chief Commercial Officer of CASTLE BIOSCIENCES INC. Currently has a direct ownership of 86,825 shares of CSTL, which is worth approximately $2.9 Million. The most recent transaction as insider was on Dec 11, 2025, when has been sold 13,200 shares (Common Stock) at a price of $37.48 per share, resulting in proceeds of $494,735. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 86.8K

2.72% 3M change

24.14% 12M change

Total Value Held $2.9 Million

Tobin W Juvenal Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 11 2025	SELL Open market or private sale	$494,735 $37.48 p/Share	13,200 Reduced 13.2%	86,825 Common Stock
Dec 10 2025	SELL Payment of exercise price or tax liability	$94,669 $38.02 p/Share	2,490 Reduced 2.43%	100,025 Common Stock
Dec 10 2025	BUY Exercise of conversion of derivative security	-	6,170 Added 5.68%	102,515 Common Stock
Dec 09 2025	SELL Payment of exercise price or tax liability	$246,368 $38.25 p/Share	6,441 Reduced 6.27%	96,345 Common Stock
Dec 09 2025	BUY Exercise of conversion of derivative security	-	15,961 Added 13.44%	102,786 Common Stock
Nov 20 2025	SELL Open market or private sale	$166,976 $35.58 p/Share	4,693 Reduced 5.26%	84,595 Common Stock
Nov 20 2025	BUY Exercise of conversion of derivative security	$15,862 $3.38 p/Share	4,693 Added 4.99%	89,288 Common Stock

Nov 12 2025	SELL Open market or private sale	$7,080 $35.4 p/Share	200 Reduced 0.24%	83,827 Common Stock
Nov 11 2025	SELL Open market or private sale	$17,695 $35.39 p/Share	500 Reduced 0.59%	84,027 Common Stock
Aug 08 2025	SELL Payment of exercise price or tax liability	$83,131 $19.36 p/Share	4,294 Reduced 4.83%	84,527 Common Stock
Aug 08 2025	BUY Exercise of conversion of derivative security	-	10,640 Added 10.7%	88,821 Common Stock
Mar 04 2025	SELL Payment of exercise price or tax liability	$123,887 $22.23 p/Share	5,573 Reduced 6.65%	78,181 Common Stock
Mar 04 2025	BUY Exercise of conversion of derivative security	-	13,811 Added 14.16%	83,754 Common Stock
Jan 06 2025	SELL Open market or private sale	$66,900 $30.0 p/Share	2,230 Reduced 3.09%	69,943 Common Stock
Dec 10 2024	SELL Payment of exercise price or tax liability	$59,200 $29.63 p/Share	1,998 Reduced 2.69%	72,173 Common Stock
Dec 10 2024	BUY Exercise of conversion of derivative security	-	7,919 Added 9.71%	73,676 Common Stock
Dec 09 2024	SELL Payment of exercise price or tax liability	$120,147 $30.91 p/Share	3,887 Reduced 5.54%	66,252 Common Stock
Dec 09 2024	BUY Exercise of conversion of derivative security	-	15,961 Added 18.54%	70,139 Common Stock
Nov 05 2024	SELL Open market or private sale	$124,708 $35.56 p/Share	3,507 Reduced 6.08%	54,178 Common Stock
Nov 05 2024	BUY Exercise of conversion of derivative security	$11,853 $3.38 p/Share	3,507 Added 5.73%	57,685 Common Stock
Nov 01 2024	SELL Open market or private sale	$109,709 $35.39 p/Share	3,100 Reduced 5.41%	54,178 Common Stock
Nov 01 2024	BUY Exercise of conversion of derivative security	$3,718 $3.38 p/Share	1,100 Added 1.88%	57,278 Common Stock
Aug 09 2024	SELL Payment of exercise price or tax liability	$69,543 $26.83 p/Share	2,592 Reduced 4.41%	56,178 Common Stock
Aug 09 2024	BUY Grant, award, or other acquisition	-	10,641 Added 15.33%	58,770 Common Stock
Jan 02 2024	BUY Exercise of conversion of derivative security	$19,365 $2.89 p/Share	6,701 Added 12.51%	46,857 Common Stock

TWJ

Tobin W Juvenal

Chief Commercial Officer

Friendswood, TX

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