Tobin W. Juvenal - 08 Aug 2025 Form 4 Insider Report for CASTLE BIOSCIENCES INC (CSTL)

Role
Chief Commercial Officer
Signature
/s/ Frank Stokes, Attorney-in-fact
Issuer symbol
CSTL
Transactions as of
08 Aug 2025
Net transactions value
-$83,132
Form type
4
Filing time
12 Aug 2025, 16:30:28 UTC
Previous filing
06 Mar 2025
Next filing
14 Nov 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 12 Aug 2025 0001856542

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CSTL Common Stock Options Exercise $0 +10,640 +14% $0.000000 88,821 08 Aug 2025 Direct
transaction CSTL Common Stock Tax liability $83,132 -4,294 -4.8% $19.36 84,527 08 Aug 2025 Direct
holding CSTL Common Stock 2,230 08 Aug 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 -10,640 -100% $0.000000 0 08 Aug 2025 Common Stock 10,640 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.