<SEC-DOCUMENT>0001965301-23-000167-index.html : 20231128
<SEC-HEADER>0001965301-23-000167.hdr.sgml : 20231128
<ACCEPTANCE-DATETIME>20231128085930
ACCESSION NUMBER:		0001965301-23-000167
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231128
DATE AS OF CHANGE:		20231128

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COSTAR GROUP, INC.
		CENTRAL INDEX KEY:			0001057352
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				522091509
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	000-24531
		FILM NUMBER:		231442021

	BUSINESS ADDRESS:	
		STREET 1:		1331 L STREET, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20005
		BUSINESS PHONE:		2023466500

	MAIL ADDRESS:	
		STREET 1:		1331 L STREET, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20005

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COSTAR GROUP INC
		DATE OF NAME CHANGE:	19990805

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Hill John W
		CENTRAL INDEX KEY:			0001351689

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		1997 ANNAPOLIS EXCHANGE PARKWAY
		STREET 2:		SUITE 410
		CITY:			ANNAPOLIS
		STATE:			MD
		ZIP:			21401
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
</SEC-DOCUMENT>