UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC  20549

FORM 8-K

CURRENT REPORT PURSUANT

TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): February 27, 2018

SENIOR HOUSING PROPERTIES TRUST

(Exact Name of Registrant as Specified in Its Charter)

Maryland

(State or Other Jurisdiction of Incorporation)

001-15319	04-3445278
(Commission File Number)	(IRS Employer Identification No.)

Two Newton Place, 255 Washington Street, Suite 300 Newton, Massachusetts	02458-1634
(Address of Principal Executive Offices)	(Zip Code)

617-796-8350

(Registrant’s Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition

period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

ITEM 2.02.  RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

On February 27, 2018, Senior Housing Properties Trust, or the Company, issued a press release regarding the Company’s results of operations and financial condition for the quarter and year ended December 31, 2017, and also provided certain supplemental operating and financial data for the quarter and year ended December 31, 2017. Copies of the Company’s press release and supplemental operating and financial data are furnished as Exhibits 99.1 and 99.2 hereto, respectively.

ITEM 9.01.  FINANCIAL STATEMENTS AND EXHIBITS.

(d)Exhibits.

99.1Press Release dated February 27, 2018.

99.2 Fourth Quarter 2017 Supplemental Operating and Financial Data.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

SENIOR HOUSING PROPERTIES TRUST
By:	/s/ Richard W. Siedel, Jr.
Name:	Richard W. Siedel, Jr.
Title:	Chief Financial Officer and Treasurer

Date:  February 27, 2018