<SEC-DOCUMENT>0001658784-26-000003-index.html : 20260317
<SEC-HEADER>0001658784-26-000003.hdr.sgml : 20260317
<ACCEPTANCE-DATETIME>20260317161222
ACCESSION NUMBER:		0001658784-26-000003
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20260315
FILED AS OF DATE:		20260317
DATE AS OF CHANGE:		20260317

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Banerjee Nana
		CENTRAL INDEX KEY:			0001658784
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24531
		FILM NUMBER:		26762020

	MAIL ADDRESS:	
		STREET 1:		C/O VERISK ANALYTICS, INC.
		STREET 2:		545 WASHINGTON BOULEVARD
		CITY:			JERSEY CITY
		STATE:			NJ
		ZIP:			07310

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COSTAR GROUP, INC.
		CENTRAL INDEX KEY:			0001057352
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		ORGANIZATION NAME:           	07 Trade & Services
		EIN:				522091509
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1201 WILSON BLVD.
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22209
		BUSINESS PHONE:		2023466500

	MAIL ADDRESS:	
		STREET 1:		1201 WILSON BLVD.
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22209

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COSTAR GROUP INC
		DATE OF NAME CHANGE:	19990805
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wk-form3_1773778339.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wk-form3_1773778339.html

Document 1 - RAW XML: wk-form3_1773778339.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>exhibit24banerjee.htm
<DESCRIPTION>EX-24
<TEXT>
Document 2 - file: exhibit24banerjee.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>exhibit24banerjee001.jpg
<TEXT>
Document 3 - file: exhibit24banerjee001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>exhibit24banerjee002.jpg
<TEXT>
Document 4 - file: exhibit24banerjee002.jpg

</DOCUMENT>
</SEC-DOCUMENT>