<SEC-DOCUMENT>0001193125-21-103071-index.html : 20210401
<SEC-HEADER>0001193125-21-103071.hdr.sgml : 20210401
<ACCEPTANCE-DATETIME>20210401060602
ACCESSION NUMBER:		0001193125-21-103071
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20210513
FILED AS OF DATE:		20210401
DATE AS OF CHANGE:		20210401

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Montrose Environmental Group, Inc.
		CENTRAL INDEX KEY:			0001643615
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
		IRS NUMBER:				464195044
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39394
		FILM NUMBER:		21795912

	BUSINESS ADDRESS:	
		STREET 1:		1 PARK PLAZA, SUITE 1000
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92614
		BUSINESS PHONE:		(949) 988-3500

	MAIL ADDRESS:	
		STREET 1:		1 PARK PLAZA, SUITE 1000
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92614
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>d305541ddef14a.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: d305541ddef14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g305541g00c36.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g305541g00c36.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g305541g07m82.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g305541g07m82.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g305541g09o10.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g305541g09o10.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g305541g13p86.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g305541g13p86.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g305541g16r13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g305541g16r13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g305541g18s56.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g305541g18s56.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g305541g38y55.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g305541g38y55.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g305541g55e01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g305541g55e01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g305541g55e02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g305541g55e02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g305541g64f12.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g305541g64f12.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g305541g78e81.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g305541g78e81.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g305541g81d91.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g305541g81d91.jpg

</DOCUMENT>
</SEC-DOCUMENT>