Kristen M. Oelschlager - 08 Aug 2025 Form 4 Insider Report for CASTLE BIOSCIENCES INC (CSTL)

Role
Chief Operating Officer
Signature
/s/ Frank Stokes, Attorney-in-fact
Issuer symbol
CSTL
Transactions as of
08 Aug 2025
Net transactions value
-$54,285
Form type
4
Filing time
12 Aug 2025, 16:31:12 UTC
Previous filing
06 Mar 2025
Next filing
04 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Oelschlager Kristen M Chief Operating Officer C/O CASTLE BIOSCIENCES, INC., 505 S FRIENDSWOOD DRIVE, SUITE 401, FRIENDSWOOD /s/ Frank Stokes, Attorney-in-fact 12 Aug 2025 0001856565

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CSTL Common Stock Options Exercise $0 +10,640 +6.5% $0.000000 174,604 08 Aug 2025 Direct
transaction CSTL Common Stock Tax liability $54,285 -2,804 -1.6% $19.36 171,800 08 Aug 2025 Direct

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 F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 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.