Tobin W. Juvenal - 02 Jan 2024 Form 4 Insider Report for CASTLE BIOSCIENCES INC (CSTL)

Role: Chief Commercial Officer
Signature: /s/ Derek Maetzold, Attorney-in-fact
Issuer symbol: CSTL
Transactions as of: 02 Jan 2024
Net transactions value: +$19,381
Form type: 4
Filing time: 04 Jan 2024, 17:16:20 UTC
Previous filing: 12 Dec 2023
Next filing: 06 Mar 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CSTL	Common Stock	Options Exercise	$7,889	+3,301	+8.2%	$2.39^*	43,457	02 Jan 2024	Direct
transaction	CSTL	Common Stock	Options Exercise	$11,492	+3,400	+7.8%	$3.38^*	46,857	02 Jan 2024	Direct
holding	CSTL	Common Stock						2,230	02 Jan 2024	By Tobin W and Susan M Juvenal Family Revocable Trust	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CSTL	Stock option (right to buy)	Options Exercise	$0	-3,301	-100%	$0.000000^*	0	02 Jan 2024	Common Stock	3,301	$2.39	Direct	F2
transaction	CSTL	Stock option (right to buy)	Options Exercise	$0	-3,400	-14%	$0.000000	21,210	02 Jan 2024	Common Stock	3,400	$3.38	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Held by Tobin W and Susan M Juvenal Family Revocable Trust of which the Reporting Person and his spouse are the trustees and the Reporting Person, his spouse and their children are the beneficiaries.
F2	The shares subject to the option are fully vested.