<SEC-DOCUMENT>0001057352-22-000045-index.html : 20220425
<SEC-HEADER>0001057352-22-000045.hdr.sgml : 20220425
<ACCEPTANCE-DATETIME>20220425164110
ACCESSION NUMBER:		0001057352-22-000045
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20220609
FILED AS OF DATE:		20220425
DATE AS OF CHANGE:		20220425

FILER:

	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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24531
		FILM NUMBER:		22850212

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>a2022proxystatement-def14a.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: a2022proxystatement-def14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>a3a04.jpg
<TEXT>
Document 2 - file: a3a04.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>acsignaturea04.jpg
<TEXT>
Document 3 - file: acsignaturea04.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>ebitda.gif
<TEXT>
Document 4 - file: ebitda.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>geneboxerdigitalsigbw.jpg
<TEXT>
Document 5 - file: geneboxerdigitalsigbw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>long-termincentivecomponen.jpg
<TEXT>
Document 6 - file: long-termincentivecomponen.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>netincome.gif
<TEXT>
Document 7 - file: netincome.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>operatingrevenue.gif
<TEXT>
Document 8 - file: operatingrevenue.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>performancepaycharts.jpg
<TEXT>
Document 9 - file: performancepaycharts.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>proxycardback.jpg
<TEXT>
Document 10 - file: proxycardback.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>proxycardfront.jpg
<TEXT>
Document 11 - file: proxycardfront.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>shareholderproposalimage.jpg
<TEXT>
Document 12 - file: shareholderproposalimage.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>variablepaycharta03.jpg
<TEXT>
Document 13 - file: variablepaycharta03.jpg

</DOCUMENT>
</SEC-DOCUMENT>