<SEC-DOCUMENT>0001104659-21-043956-index.html : 20210330
<SEC-HEADER>0001104659-21-043956.hdr.sgml : 20210330
<ACCEPTANCE-DATETIME>20210330165225
ACCESSION NUMBER:		0001104659-21-043956
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20210330
DATE AS OF CHANGE:		20210330

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DIVERSIFIED HEALTHCARE TRUST
		CENTRAL INDEX KEY:			0001075415
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				043445278
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15319
		FILM NUMBER:		21786924

	BUSINESS ADDRESS:	
		STREET 1:		C/O THE RMR GROUP
		STREET 2:		TWO NEWTON PL., 255 WASH. ST., STE. 300
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
		BUSINESS PHONE:		(617) 796-8350

	MAIL ADDRESS:	
		STREET 1:		C/O THE RMR GROUP
		STREET 2:		TWO NEWTON PL., 255 WASH. ST., STE. 300
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SENIOR HOUSING PROPERTIES TRUST
		DATE OF NAME CHANGE:	19981217
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>tm212359d3_defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: tm212359d3_defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>tm212359-3_defa14aimg003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: tm212359-3_defa14aimg003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tm212359-3_defa14aimg004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm212359-3_defa14aimg004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm212359-3_defa14aimg001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tm212359-3_defa14aimg001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>tm212359-3_defa14aimg002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: tm212359-3_defa14aimg002.jpg

</DOCUMENT>
</SEC-DOCUMENT>