<SEC-DOCUMENT>0001179110-21-007118-index.html : 20210629
<SEC-HEADER>0001179110-21-007118.hdr.sgml : 20210629
<ACCEPTANCE-DATETIME>20210629172209
ACCESSION NUMBER:		0001179110-21-007118
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210625
FILED AS OF DATE:		20210629
DATE AS OF CHANGE:		20210629

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Summit Partners Growth Equity Fund IX-A, L.P.
		CENTRAL INDEX KEY:			0001634415
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40478
		FILM NUMBER:		211059233

	BUSINESS ADDRESS:	
		STREET 1:		222 BERKELEY STREET 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-824-1000

	MAIL ADDRESS:	
		STREET 1:		222 BERKELEY STREET 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Summit Partners Growth Equity Fund IX-B, L.P.
		CENTRAL INDEX KEY:			0001634426
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40478
		FILM NUMBER:		211059232

	BUSINESS ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-824-1000

	MAIL ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SUMMIT INVESTORS GE IX/VC IV (UK), L.P.
		CENTRAL INDEX KEY:			0001846709
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40478
		FILM NUMBER:		211059231

	BUSINESS ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		(617) 824-1000

	MAIL ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Summit Partners Entrepreneur Advisors Fund II, L.P.
		CENTRAL INDEX KEY:			0001660981
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40478
		FILM NUMBER:		211059229

	BUSINESS ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-824-1000

	MAIL ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SUMMIT INVESTORS GE IX/VC IV, LLC
		CENTRAL INDEX KEY:			0001654074
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40478
		FILM NUMBER:		211059230

	BUSINESS ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		(617) 824-1100

	MAIL ADDRESS:	
		STREET 1:		222 BERKELEY STREET, 18TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LifeStance Health Group, Inc.
		CENTRAL INDEX KEY:			0001845257
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HEALTH SERVICES [8000]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4800 N. SCOTTSDALE ROAD
		STREET 2:		SUITE 6000
		CITY:			SCOTTSDALE
		STATE:			AZ
		ZIP:			85251
		BUSINESS PHONE:		425-279-8500

	MAIL ADDRESS:	
		STREET 1:		4800 N. SCOTTSDALE ROAD
		STREET 2:		SUITE 6000
		CITY:			SCOTTSDALE
		STATE:			AZ
		ZIP:			85251
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
Document 1 - file: edgar.html

Document 1 - RAW XML: edgar.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24devereux032017.htm
<TEXT>
Document 2 - file: ex24devereux032017.htm

</DOCUMENT>
</SEC-DOCUMENT>