<SEC-DOCUMENT>0000313028-21-000021-index.html : 20210211
<SEC-HEADER>0000313028-21-000021.hdr.sgml : 20210211
<ACCEPTANCE-DATETIME>20210211113606
ACCESSION NUMBER:		0000313028-21-000021
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210211
DATE AS OF CHANGE:		20210211

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CORPORATE OFFICE PROPERTIES TRUST
		CENTRAL INDEX KEY:			0000860546
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				232947217
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-51779
		FILM NUMBER:		21617717

	BUSINESS ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046
		BUSINESS PHONE:		4432855400

	MAIL ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CORPORATE OFFICE PROPERTIES TRUST INC
		DATE OF NAME CHANGE:	19980105

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYALE INVESTMENTS INC
		DATE OF NAME CHANGE:	19930328

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYALE REIT INC
		DATE OF NAME CHANGE:	19600201

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BARROW HANLEY MEWHINNEY & STRAUSS LLC
		CENTRAL INDEX KEY:			0000313028
		IRS NUMBER:				752403190
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		2200 ROSS AVENUE
		STREET 2:		31ST FLOOR
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201-2761
		BUSINESS PHONE:		2146651900

	MAIL ADDRESS:	
		STREET 1:		2200 ROSS AVENUE
		STREET 2:		31ST FLOOR
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201-2761

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BARROW HANLEY MEWHINNEY & STRAUSS INC
		DATE OF NAME CHANGE:	19940228
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>ofc13g021121.htm
<DESCRIPTION>SCHEDULE 13G
<TEXT>
Document 1 - file: ofc13g021121.htm

</DOCUMENT>
</SEC-DOCUMENT>