<SEC-DOCUMENT>0000876661-17-000351-index.html : 20170627
<SEC-HEADER>0000876661-17-000351.hdr.sgml : 20170627
<ACCEPTANCE-DATETIME>20170627152941
ACCESSION NUMBER:		0000876661-17-000351
CONFORMED SUBMISSION TYPE:	25-NSE
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20170627
DATE AS OF CHANGE:		20170627
EFFECTIVENESS DATE:		20170627

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:		25-NSE
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14023
		FILM NUMBER:		17932292

	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:			NEW YORK STOCK EXCHANGE LLC
		CENTRAL INDEX KEY:			0000876661
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY

	FILING VALUES:
		FORM TYPE:		25-NSE

	BUSINESS ADDRESS:	
		STREET 1:		11 WALL STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005
		BUSINESS PHONE:		212-656-2060

	MAIL ADDRESS:	
		STREET 1:		11 WALL STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NEW YORK STOCK EXCHANGE INC
		DATE OF NAME CHANGE:	19910628
</SEC-HEADER>
<DOCUMENT>
<TYPE>25-NSE
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.25
<SEQUENCE>2
<FILENAME>ruleprovisionnotice.htm
<TEXT>
Document 2 - file: ruleprovisionnotice.htm

</DOCUMENT>
</SEC-DOCUMENT>