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    <ACCEPTANCE-DATETIME>20260226160752
    ACCESSION NUMBER:		0001628280-26-012263
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		47
    CONFORMED PERIOD OF REPORT:	20260226
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20260226
    DATE AS OF CHANGE:		20260226

    FILER:

    	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

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38984
    		FILM NUMBER:		26687923

    	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
    </SEC-HEADER>
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