Frank Stokes Castle Biosciences Inc (CSTL) insider trading activity

Frank Stokes is Chief Financial Officer of CASTLE BIOSCIENCES INC. Currently has a direct ownership of 50,326 shares of CSTL, which is worth approximately $1.68 Million. The most recent transaction as insider was on Dec 11, 2025, when has been sold 4,496 shares (Common Stock) at a price of $37.45 per share, resulting in proceeds of $168,375. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 50.3K

3.3% 3M change

16.05% 12M change

Total Value Held $1.68 Million

Frank Stokes Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 11 2025	SELL Open market or private sale	$168,375 $37.45 p/Share	4,496 Reduced 8.2%	50,326 Common Stock
Dec 10 2025	SELL Payment of exercise price or tax liability	$104,859 $38.02 p/Share	2,758 Reduced 4.79%	54,822 Common Stock
Dec 10 2025	BUY Exercise of conversion of derivative security	-	6,170 Added 9.68%	57,580 Common Stock
Dec 09 2025	SELL Payment of exercise price or tax liability	$249,925 $38.25 p/Share	6,534 Reduced 11.28%	51,410 Common Stock
Dec 09 2025	BUY Exercise of conversion of derivative security	-	14,616 Added 20.14%	57,944 Common Stock
Nov 11 2025	SELL Open market or private sale	$189,011 $35.08 p/Share	5,388 Reduced 11.06%	43,328 Common Stock
Aug 08 2025	SELL Payment of exercise price or tax liability	$84,332 $19.36 p/Share	4,356 Reduced 8.21%	48,716 Common Stock

Aug 08 2025	BUY Exercise of conversion of derivative security	-	9,744 Added 15.51%	53,072 Common Stock
Mar 04 2025	SELL Payment of exercise price or tax liability	$121,109 $22.23 p/Share	5,448 Reduced 11.17%	43,328 Common Stock
Mar 04 2025	BUY Exercise of conversion of derivative security	-	12,186 Added 19.99%	48,776 Common Stock
Feb 20 2025	SELL Open market or private sale	$214,828 $26.7 p/Share	8,046 Reduced 18.55%	35,319 Common Stock
Dec 10 2024	SELL Payment of exercise price or tax liability	$108,830 $29.63 p/Share	3,673 Reduced 7.81%	43,365 Common Stock
Dec 10 2024	BUY Exercise of conversion of derivative security	-	8,169 Added 15.04%	46,138 Common Stock
Dec 09 2024	SELL Payment of exercise price or tax liability	$203,109 $30.91 p/Share	6,571 Reduced 14.46%	38,869 Common Stock
Dec 09 2024	BUY Exercise of conversion of derivative security	-	14,617 Added 24.34%	45,440 Common Stock
Nov 15 2024	SELL Open market or private sale	$208,659 $30.14 p/Share	6,923 Reduced 18.34%	30,823 Common Stock
Aug 09 2024	SELL Payment of exercise price or tax liability	$75,714 $26.83 p/Share	2,822 Reduced 6.96%	37,746 Common Stock
Aug 09 2024	BUY Grant, award, or other acquisition	-	9,745 Added 19.37%	40,568 Common Stock
Aug 07 2024	SELL Open market or private sale	$256,700 $25.67 p/Share	10,000 Reduced 24.5%	30,823 Common Stock
Dec 10 2023	SELL Payment of exercise price or tax liability	$48,125 $20.17 p/Share	2,386 Reduced 5.69%	39,551 Common Stock
Dec 10 2023	BUY Exercise of conversion of derivative security	-	8,170 Added 16.91%	40,135 Common Stock
Dec 09 2023	SELL Payment of exercise price or tax liability	$86,105 $20.17 p/Share	4,269 Reduced 11.22%	33,767 Common Stock
Dec 09 2023	BUY Exercise of conversion of derivative security	-	14,617 Added 27.76%	38,036 Common Stock
Apr 04 2023	BUY Exercise of conversion of derivative security	$13,520 $3.38 p/Share	4,000 Added 14.59%	23,419 Common Stock
Dec 10 2022	SELL Payment of exercise price or tax liability	$53,701 $22.32 p/Share	2,406 Reduced 11.49%	18,539 Common Stock

Also insider at

XGN

EXAGEN INC. Healthcare

Director

Frank Stokes

Chief Financial Officer

Friendswood, TX

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