0001628280-26-059272.txt : 20260827 0001628280-26-059272.hdr.sgml : 20260827 20260827163832 ACCESSION NUMBER: 0001628280-26-059272 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260825 FILED AS OF DATE: 20260827 DATE AS OF CHANGE: 20260827 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Juvenal Tobin W CENTRAL INDEX KEY: 0001856542 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38984 FILM NUMBER: 261331231 MAIL ADDRESS: STREET 1: C/O CASTLE BIOSCIENCES STREET 2: 505 S. FRIENDSWOOD DRIVE, SUITE 401 CITY: FRIENDSWOOD STATE: TX ZIP: 77546 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: CASTLE BIOSCIENCES INC CENTRAL INDEX KEY: 0001447362 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-MEDICAL LABORATORIES [8071] ORGANIZATION NAME: 08 Industrial Applications and Services EIN: 770701774 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 1500 W. PARKWOOD AVE. STREET 2: SUITE 400 CITY: FRIENDSWOOD STATE: TX ZIP: 77546 BUSINESS PHONE: 866-788-9007 MAIL ADDRESS: STREET 1: 1500 W. PARKWOOD AVE. STREET 2: SUITE 400 CITY: FRIENDSWOOD STATE: TX ZIP: 77546 4 1 wk-form4_1787863108.xml FORM 4 X0609 4 2026-08-25 0 0001447362 CASTLE BIOSCIENCES INC CSTL 0001856542 Juvenal Tobin W false C/O CASTLE BIOSCIENCES, INC. 1500 W. PARKWOOD AVE SUITE 400 FRIENDSWOOD TX 77546 0 1 0 0 Chief Commercial Officer 1 Common Stock 2026-08-25 4 S 0 9050 35.04 D 66914 D This transaction was made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 10, 2025. This transaction was executed in multiple trades at prices ranging from $35.00 to $35.14, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Frank Stokes, Attorney-in-fact 2026-08-27