<SEC-DOCUMENT>0001047469-18-002485-index.html : 20180403
<SEC-HEADER>0001047469-18-002485.hdr.sgml : 20180403
<ACCEPTANCE-DATETIME>20180403165457
ACCESSION NUMBER:		0001047469-18-002485
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20180403
DATE AS OF CHANGE:		20180403
EFFECTIVENESS DATE:		20180403

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SENIOR HOUSING PROPERTIES 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:		18734189

	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
</SEC-HEADER>
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<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>a2235183zdefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a2235183zdefa14a.htm

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<SEQUENCE>2
<FILENAME>g962485.jpg
<DESCRIPTION>G962485.JPG
<TEXT>
Document 2 - file: g962485.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g560118.jpg
<DESCRIPTION>G560118.JPG
<TEXT>
Document 3 - file: g560118.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g28594bii001.gif
<DESCRIPTION>G28594BII001.GIF
<TEXT>
Document 4 - file: g28594bii001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g28594bii002.gif
<DESCRIPTION>G28594BII002.GIF
<TEXT>
Document 5 - file: g28594bii002.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g28594bii003.gif
<DESCRIPTION>G28594BII003.GIF
<TEXT>
Document 6 - file: g28594bii003.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g28594bii004.gif
<DESCRIPTION>G28594BII004.GIF
<TEXT>
Document 7 - file: g28594bii004.gif

</DOCUMENT>
</SEC-DOCUMENT>