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CSTL Castle Biosciences

Cover

CoverMay 10, 2021
Cover [Abstract]
Document Type8-K
Document Period End DateMay 10,
2021
Entity Registrant NameCastle Biosciences, Inc.
Entity Incorporation, State or Country CodeDE
Entity File Number001-38984
Entity Tax Identification Number77-0701774
Entity Address, Address Line One505 S. Friendswood Drive
Entity Address, Address Line TwoSuite 401
Entity Address, City or TownFriendswood
Entity Address, State or ProvinceTX
Entity Address, Postal Zip Code77546
City Area Code866
Local Phone Number788-9007
Written Communicationsfalse
Soliciting Materialfalse
Pre-commencement Tender Offerfalse
Pre-commencement Issuer Tender Offerfalse
Title of 12(b) SecurityCommon Stock, $0.001 par value per share
Trading SymbolCSTL
Security Exchange NameNASDAQ
Entity Emerging Growth Companytrue
Entity Ex Transition Periodfalse
Entity Central Index Key0001447362
Amendment Flagfalse