Tobin W. Juvenal - Aug 8, 2025 Form 4 Insider Report for CASTLE BIOSCIENCES INC (CSTL)

Role
Chief Commercial Officer
Signature
/s/ Frank Stokes, Attorney-in-fact
Stock symbol
CSTL
Transactions as of
Aug 8, 2025
Transactions value $
-$83,132
Form type
4
Date filed
8/12/2025, 04:30 PM
Previous filing
Mar 6, 2025
Next filing
Nov 14, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Juvenal Tobin W Chief Commercial Officer C/O CASTLE BIOSCIENCES, INC., 505 S FRIENDSWOOD DRIVE, SUITE 401, FRIENDSWOOD /s/ Frank Stokes, Attorney-in-fact 2025-08-12 0001856542

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CSTL Common Stock Options Exercise $0 +10.6K +13.61% $0.00 88.8K Aug 8, 2025 Direct
transaction CSTL Common Stock Tax liability -$83.1K -4.29K -4.83% $19.36 84.5K Aug 8, 2025 Direct
holding CSTL Common Stock 2.23K Aug 8, 2025 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 Performance-Based Stock Unit Options Exercise $0 -10.6K -100% $0.00 0 Aug 8, 2025 Common Stock 10.6K 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 Each Performance-Based Stock Unit ("PSU") represents the right to receive one share of the Issuer's Common Stock. These PSUs represent the remaining 50% of the PSUs granted on December 23, 2022, which were all subject to time-based vesting and vested in full on the one-year anniversary of August 9, 2024.