<SEC-DOCUMENT>0001104659-18-067908-index.html : 20181113
<SEC-HEADER>0001104659-18-067908.hdr.sgml : 20181113
<ACCEPTANCE-DATETIME>20181113160756
ACCESSION NUMBER:		0001104659-18-067908
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		9
CONFORMED PERIOD OF REPORT:	20181113
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20181113
DATE AS OF CHANGE:		20181113

FILER:

	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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14023
		FILM NUMBER:		181177985

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a18-39474_38k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a18-39474_38k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.1
<SEQUENCE>2
<FILENAME>a18-39474_3ex1d1.htm
<DESCRIPTION>EX-1.1
<TEXT>
Document 2 - file: a18-39474_3ex1d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>a18-39474_3ex5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 3 - file: a18-39474_3ex5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-8.1
<SEQUENCE>4
<FILENAME>a18-39474_3ex8d1.htm
<DESCRIPTION>EX-8.1
<TEXT>
Document 4 - file: a18-39474_3ex8d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>5
<FILENAME>a18-39474_3ex10d1.htm
<DESCRIPTION>EX-10.1
<TEXT>
Document 5 - file: a18-39474_3ex10d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g394743lai001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g394743lai001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g394743lai002.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g394743lai002.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g394743lai003.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g394743lai003.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g394743kki001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g394743kki001.jpg

</DOCUMENT>
</SEC-DOCUMENT>