SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13D/A
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
             TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT
                                TO RULE 13d-2(a)
                               (Amendment No. 10)*

                         SENIOR HOUSING PROPERTIES TRUST
                                (Name of Issuer)

              COMMON SHARES OF BENEFICIAL INTEREST, $0.01 PAR VALUE
                         (Title of Class of Securities)

                                   81721M 10 9
                                 (CUSIP Number)

                                 John A. Mannix
                              HRPT Properties Trust
                                400 Centre Street
                                Newton, MA 02458
                                 (617) 332-3990
                  (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                December 7, 2005
             (Date of Event which Requires Filing of this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following 
box / /.

Note: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7(b) for other
parties to whom copies are to be sent.

                         (Continued on following pages)

                              (Page 1 of 12 Pages)
-------------------------

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 2 of 12 Pages


1           NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            HRPT Properties Trust   I.R.S. ID No. 04-6558834

2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
            (a)  / /
            (b)  / /


3           SEC USE ONLY


4           SOURCE OF FUNDS*

            WC


5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)    / /


6           CITIZENSHIP OR PLACE OF ORGANIZATION

            Maryland


                          7         SOLE VOTING POWER
NUMBER OF
SHARES                              7,710,738
BENEFICIALLY
OWNED BY                  8         SHARED VOTING POWER     
EACH                                                       
REPORTING                                                   
PERSON                                                      
WITH                      9         SOLE DISPOSITIVE POWER  
                                                            
                                    7,710,738               
                                                            
                                                            
                          10        SHARED DISPOSITIVE POWER
                          

11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            7,876,154


12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
            SHARES*           / /



13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            11.0%


14          TYPE OF REPORTING PERSON*

            OO

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 3 of 12 Pages

1           NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Reit Management & Research LLC  I.R.S. ID No. 04-3583787


2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
            (a) / /
            (b) / /


3           SEC USE ONLY


4           SOURCE OF FUNDS*

            OO


5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)    / /



6           CITIZENSHIP OR PLACE OF ORGANIZATION

            Delaware


                          7         SOLE VOTING POWER
NUMBER OF
SHARES                              39,019
BENEFICIALLY
OWNED BY                  8         SHARED VOTING POWER     
EACH                                                       
REPORTING                                                   
PERSON                                                      
WITH                      9         SOLE DISPOSITIVE POWER  
                                                            
                                    39,019                  
                                                            
                                                            
                          10        SHARED DISPOSITIVE POWER
                                                            

11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            7,976,381


12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
            SHARES*          / /


13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            11.1%


14          TYPE OF REPORTING PERSON*

            OO

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 4 of 12 Pages

1           NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Reit Management & Research Trust  I.R.S. ID No. 04-3402206


2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
            (a) / /
            (b) / /


3           SEC USE ONLY


4           SOURCE OF FUNDS*

            OO

5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)     / /


6           CITIZENSHIP OR PLACE OF ORGANIZATION

            Massachusetts


                          7         SOLE VOTING POWER
NUMBER OF
SHARES
BENEFICIALLY              8         SHARED VOTING POWER      
OWNED BY                                                     
EACH                                                        
REPORTING                                                    
PERSON                    9         SOLE DISPOSITIVE POWER   
WITH                                                        
                                                             
                                                             
                          10        SHARED DISPOSITIVE POWER 
                          

11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            7,976,381


12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
            SHARES*           / /


13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            11.1%


14          TYPE OF REPORTING PERSON*

            OO

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 5 of 12 Pages

1           NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Barry M. Portnoy


2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
            (a) / /
            (b) / /


3           SEC USE ONLY


4           SOURCE OF FUNDS*

            OO


5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)    / /



6           CITIZENSHIP OR PLACE OF ORGANIZATION

            United States


                          7         SOLE VOTING POWER
NUMBER OF
SHARES                              68,990
BENEFICIALLY
OWNED BY                  8         SHARED VOTING POWER     
EACH                                                       
REPORTING                                                   
PERSON                                                      
WITH                      9         SOLE DISPOSITIVE POWER  
                                                            
                                    68,990                  
                                                            
                                                            
                          10        SHARED DISPOSITIVE POWER
                          


11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            7,818,747


12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
            SHARES*           / /


13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            10.9%


14          TYPE OF REPORTING PERSON*

            IN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 6 of 12 Pages

1           NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Adam D. Portnoy


2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
            (a) / /
            (b) / /


3           SEC USE ONLY


4           SOURCE OF FUNDS*

            OO


5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)    / /


6           CITIZENSHIP OR PLACE OF ORGANIZATION

            United States


                          7         SOLE VOTING POWER
NUMBER OF
SHARES                              5,000
BENEFICIALLY
OWNED BY                  8         SHARED VOTING POWER     
EACH                                                       
REPORTING                                                   
PERSON                                                      
WITH                      9         SOLE DISPOSITIVE POWER  
                                                            
                                    5,000                   
                                                            
                                                            
                          10        SHARED DISPOSITIVE POWER
                          

11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            7,754,757


12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
            SHARES*          / /


13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            10.8%


14          TYPE OF REPORTING PERSON*

            IN

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 7 of 12 Pages



         This Amendment No. 10 to the original Schedule 13D filed September 29,
1999, by HRPT Properties Trust and Reit Management & Research, Inc., the
original Schedule 13D filed October 23, 2001, by Reit Management & Research
Trust, a Massachusetts business trust ("RMR Trust"), and the original Schedule
13D filed November 8, 2005, by each of Barry M. Portnoy and Adam D. Portnoy is
being filed to reflect the closing of the sale of 950,000 Common Shares of
Beneficial Interest, par value $0.01, of Senior Housing Properties Trust owned
by HRPT Properties Trust in an underwritten public offering at a public offering
price per share of $18.90 (the "HRP Sale") and the grant by HRPT Properties
Trust to the underwriters of that transaction, the option to purchase up to an
additional 630,000 Shares (defined below) at a public offering price per share
of $18.90 on or prior to January 1, 2006 to cover over-allotments, if any (the
"Over-Allotment Option").

Item 1.  Security and Issuer.

         The class of equity securities to which this statement relates is the
Common Shares of Beneficial Interest, par value $0.01 per share (the "Shares"),
of Senior Housing Properties Trust, a Maryland real estate investment trust
("SNH"), with its principal executive offices located at 400 Centre Street,
Newton, Massachusetts 02458.

Item 2.  Identity and Background.

         The persons filing this statement are HRPT Properties Trust, a Maryland
real estate investment trust ("HRP"), Reit Management & Research LLC, a Delaware
limited liability company ("RMR"), RMR Trust, Barry M. Portnoy, and Adam D.
Portnoy.

         HRP's principal business is to operate as a real estate investment
trust. The principal office of HRP is located at 400 Centre Street, Newton,
Massachusetts 02458. The trustees of HRP are Tjarda Clagett, Patrick F. Donelan,
Gerard M. Martin, Barry M. Portnoy and Frederick N. Zeytoonjian. The executive
officers of HRP are John A. Mannix, President and Chief Operating Officer, John
C. Popeo, Treasurer, Chief Financial Officer and Secretary, Adam D. Portnoy,
Executive Vice President, Jennifer B. Clark, Senior Vice President, and David M.
Lepore, Senior Vice President.

         RMR's principal business is providing management services to real
estate investment trusts such as SNH and others. The principal office of RMR is
located at 400 Centre Street, Newton, Massachusetts 02458. The directors of RMR
are David J. Hegarty, Gerard M. Martin and Barry M. Portnoy. The executive
officers of RMR are David J. Hegarty, President and Secretary, John G. Murray,
Executive Vice President, Evrett W. Benton, Vice President, Ethan S. Bornstein,
Vice President, Jennifer B. Clark, Vice President, John R. Hoadley, Vice
President, Mark L. Kleifges, Vice President, David M. Lepore, Vice President,
Bruce J. Mackey Jr., Vice President, John A. Mannix, Vice President, Thomas M.
O'Brien, Vice President, John C. Popeo, 

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 8 of 12 Pages


Vice President and Treasurer and Adam D. Portnoy, Vice President. The sole
member of RMR is RMR Trust.

         RMR Trust's principal business is to act as the sole member of RMR. The
principal office of RMR Trust is located at 400 Centre Street, Newton,
Massachusetts 02458. The trustees and executive officers of RMR Trust are the
same as the directors and executive officers of RMR. Mr. Barry Portnoy and Mr.
Adam Portnoy own all of the outstanding shares of capital stock of RMR Trust.

         Mr. Barry Portnoy is also a Managing Trustee of SNH, HRP, and
Hospitality Properties Trust, a Managing Director of Five Star Quality Care,
Inc. and a Trustee of RMR Real Estate Fund, RMR Hospitality and Real Estate
Fund, RMR F.I.R.E. Fund and RMR Preferred Dividend Fund, each of which has its
principal office at 400 Centre Street, Newton, Massachusetts 02458.

         Mr. Adam Portnoy is also an Executive Vice President of HRP and a Vice
President of RMR Real Estate Fund, RMR Hospitality and Real Estate Fund, RMR
F.I.R.E. Fund and RMR Preferred Dividend Fund, each of which has its principal
office at 400 Centre Street, Newton, Massachusetts 02458.

         Each of the individuals listed above (i) has a business address at 400
Centre Street, Newton, Massachusetts 02458, (ii) except for Mr. Donelan, is a
United States citizen and (iii) except for Messrs. Clagett, Donelan and
Zeytoonjian, is principally employed by RMR in the capacities specified above.
Mr. Hegarty also serves as the President, Chief Operating Officer and Secretary
of SNH, and Mr. Hoadley also serves as Treasurer and Chief Financial Officer of
SNH. The principal office of SNH is located at 400 Centre Street, Newton,
Massachusetts 02458. Mr. Clagett is principally employed as a private investor.
Mr. Donelan is principally employed as a private investor. Mr. Zeytoonjian is
Chairman and Chief Executive Officer of Turf Products Corporation and is also a
trustee of SNH.

         Neither HRP, RMR, RMR Trust, Mr. Barry Portnoy, Mr. Adam Portnoy nor
any of the other individuals specified above has, during the last five years,
been convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors), or been party to any civil proceeding which resulted in a
judgment, decree or final order enjoining future violations of, or prohibiting
or mandating activities subject to, federal or state securities laws or finding
any violation with respect to such laws.

Item 3.  Source and Amount of Funds or Other Consideration.

         There have been no material changes to the information previously
reported in prior statements with respect to HRP, RMR, RMR Trust, Mr. Barry
Portnoy, and Mr. Adam Portnoy.


                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 9 of 12 Pages


Item 4.  Purpose of Transaction.

         Other than the potential transaction contemplated by the Over-Allotment
Option, there have been no material changes to the information previously
reported in prior statements with respect to HRP, RMR, RMR Trust, Mr. Barry
Portnoy, and Mr. Adam Portnoy.

Item 5.  Interest in Securities of the Issuer.

         (a) Giving effect to the HRP Sale (but not the Over-Allotment Option),
HRP holds 7,710,738 Shares, which represent 10.7% of the issued and outstanding
Shares.

         In addition, the trustees and executive officers of HRP own SNH Shares
as follows: Mr. Barry Portnoy, through a corporation of which he is the sole
stockholder, 68,990 Shares; Mr. Adam Portnoy, 5,000 Shares, and other trustees
and executive officers of HRP, 91,426 Shares in the aggregate. The Shares held
by HRP, when aggregated with such additional Shares held by the trustees and
executive officers of HRP, aggregate 7,876,154 Shares, which represent 11.0% of
the issued and outstanding Shares. The Shares held by Mr. Barry Portnoy, Mr.
Adam Portnoy and the other trustees and executive officers of HRP are reported
herein with respect to HRP pursuant to the provisions of Items 2 and 5 of
Schedule 13D. HRP, however, expressly disclaims any beneficial ownership of the
Shares held by Mr. Barry Portnoy, Mr. Adam Portnoy and the other trustees and
executive officers of HRP.

         RMR holds 39,019 Shares, which represent less than 1% of the issued and
outstanding Shares. RMR Trust holds no Shares, and, as the sole member of RMR,
may, under applicable regulatory definitions, be deemed to beneficially own
RMR's 39,019 Shares, but expressly disclaims any beneficial ownership of such
Shares.

         RMR, as HRP's manager, and RMR Trust, as the sole member of RMR, may,
under applicable regulatory definitions, be deemed to beneficially own HRP's
7,710,738 Shares. In addition, the trustees, directors and executive officers of
RMR and RMR Trust, including Mr. Barry Portnoy and Mr. Adam Portnoy, as
described above, beneficially own 226,624 Shares in the aggregate. The Shares
held by RMR and HRP, when aggregated with such additional Shares held by the
directors and executive officers of RMR and RMR Trust, aggregate 7,976,381
Shares, which represent 11.1% of the issued and outstanding Shares. The Shares
held by HRP, Mr. Barry Portnoy, Mr. Adam Portnoy and the other directors and
executive officers of RMR and RMR Trust are reported herein with respect to each
of RMR and RMR Trust pursuant to the provisions of Items 2 and 5 of Schedule
13D. RMR and RMR Trust, however, each expressly disclaims any beneficial
ownership of the Shares held by HRP or any of Mr. Barry Portnoy or Mr. Adam
Portnoy or other directors or executive officers of RMR or RMR Trust.

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 10 of 12 Pages


         Mr. Barry Portnoy, through a corporation of which he is the sole
stockholder, owns the 68,990 Shares described above. In addition, as a director
and a beneficial owner of RMR Trust or RMR or as a Managing Trustee of HRP, Mr.
Barry Portnoy may, under applicable regulatory definitions, be deemed to
beneficially own RMR's 39,019 Shares and HRP's 7,710,738 Shares. The Shares held
by Mr. Barry Portnoy, when aggregated with such Shares held by RMR and HRP,
aggregate 7,818,747 Shares, which represent 10.9% of the issued and outstanding
Shares. Mr. Adam Portnoy holds 5,000 Shares. In addition, as a beneficial owner
of RMR Trust or RMR, Mr. Adam Portnoy may, under applicable regulatory
definitions, be deemed to beneficially own RMR's 39,019 Shares and HRP's
7,710,738 Shares. The Shares held by Mr. Adam Portnoy, when aggregated with such
Shares held by RMR and HRP, aggregate 7,754,757 Shares, which represent 10.8% of
the issued and outstanding Shares. The Shares held by HRP and RMR are reported
herein with respect to Mr. Barry Portnoy and Mr. Adam Portnoy pursuant to the
provisions of Items 2 and 5 of Schedule 13D. Mr. Barry Portnoy and Mr. Adam
Portnoy, however, each expressly disclaim any beneficial ownership of the Shares
held by HRP or RMR.

         (b) HRP has sole power to vote or dispose of its 7,710,738 Shares. RMR
has sole power to vote or dispose of its 39,019 Shares. Barry M. Portnoy has
sole power to vote or dispose of his indirectly owned 68,990 Shares. Adam D.
Portnoy has the sole power to vote or dispose of his 5,000 Shares. To HRP's,
RMR's, RMR Trust's, Mr. Barry Portnoy's and Mr. Adam Portnoy's knowledge, each
of the other trustees, directors and executive officers of HRP, RMR and RMR
Trust described above has sole power to vote or dispose of the Shares he or she
beneficially owns.

         (c) Other than the HRP Sale, the granting of the Over-Allotment Option
and the acquisition in November 2005 of an aggregate of 98 Shares by certain
executive officers of HRP, RMR and RMR Trust (which Shares are included in the
totals herein for each such executive officer) pursuant to their participation
in SNH's dividend reinvestment plan, no transactions in Shares have been
effected during the past sixty days by HRP, RMR, RMR Trust or the trustees,
directors and executive officers of HRP, RMR and RMR Trust described above.

         (d) No other person is known to have the right to receive or the power
to direct the receipt of distributions from, or the proceeds from the sale of
securities covered by this statement.

Item 6.  Contracts, Arrangements, Understandings or Relationships With Respect 
         to Securities of the Issuer.

         Other than the potential transaction contemplated by the Over-Allotment
Option, HRP has formed no definitive intent to sell the Shares or any portion
thereof. However, depending upon its continuing review of its investments and
various other facts, HRP may in the future desire, subject to any applicable
securities laws, to sell all or a portion of the Shares. SNH has registered the
offer and sale of the Shares under the Securities Act of 1933, as amended (the
"Securities Act"), pursuant to a registration statement on Form S-3 (No.
333-109659). That registration statement became effective on October 24, 2003.
In connection with the registration 

                                  SCHEDULE 13D

CUSIP NO. 81721M 10 9                                       Page 11 of 12 Pages


statement, HRP and SNH entered into a Registration Agreement (the "Registration
Agreement"). Under the Registration Agreement, SNH agreed to, among other
things, file the registration statement and use reasonable efforts to effect the
registration of the Shares and HRP, among other things, agreed to pay all
expenses incurred by SNH relating to the registration and any sale of the
Shares. SNH also agreed to indemnify HRP against certain liabilities, including
liabilities under the Securities Act and, alternately, to contribute to payments
that HRP may be required to make as a result of these liabilities.

         The HRP Sale was consummated pursuant to an Underwriting Agreement,
dated December 2, 2005, by and among SNH, HRP, and the underwriters named
therein (the "Underwriting Agreement"). Pursuant to the Underwriting Agreement,
SNH issued and sold, concurrently with the HRP Sale, 3,250,000 Shares in an
underwritten public offering at a public offering price per share of $18.90. The
Underwriting Agreement also provides that the total expenses of the offering
will be paid by SNH and HRP jointly and severally.

Item 7.  Material to be Filed as Exhibits.

         The following documents are filed as exhibits to this statement:

         99.1     Underwriting Agreement, dated December 2, 2005, by and among
                  SNH, HRP, and the underwriters named therein (incorporated by
                  reference to Exhibit 1.1 to SNH's Current Report on Form 8-K
                  dated December 2, 2005).

         99.2     Amended and Restated Joint Filing Agreement, dated as of
                  November 8, 2005, by and among HRP, RMR, RMR Trust, Barry M.
                  Portnoy and Adam D. Portnoy (incorporated by reference to
                  Exhibit 99.1 to the filing on Schedule 13D/A by HRP, RMR, RMR
                  Trust, Barry M. Portnoy and Adam D. Portnoy dated October 26,
                  2005).

         99.3.    Registration Agreement, dated as of October 10, 2003, by and
                  between SNH and HRP (incorporated by reference to Exhibit 10.1
                  to SNH's Registration Statement on Form S-3 (No. 333-109659)
                  filed October 14, 2003).





                                    SIGNATURE

         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.


December 8, 2005                   HRPT PROPERTIES TRUST


                                   By: /s/ John C. Popeo
                                       ----------------------------------
                                       John C. Popeo
                                       Treasurer, Chief Financial Officer 
                                       and Secretary 


                                   REIT MANAGEMENT & RESEARCH LLC


                                   By: /s/ John C. Popeo
                                       ----------------------------------
                                       John C. Popeo
                                       Vice President and Treasurer


                                   REIT MANAGEMENT & RESEARCH TRUST

                                   By: /s/ John C. Popeo
                                       ----------------------------------
                                       John C. Popeo
                                       Vice President and Treasurer


                                   /s/ Barry M. Portnoy
                                   ----------------------------------
                                   Barry M. Portnoy, individually


                                   /s/ Adam D. Portnoy
                                   ----------------------------------
                                   Adam D. Portnoy, individually