SNH Senior Housing Properties Trust

Senior Housing Properties Trust (NYSE: SNH) today announced that the characterization of dividends for 2010 income tax reporting purposes is as follows:

Common Shares

        Dividend Allocation Per Share       Unrecaptured   Declaration Record Paid/Payable Dividends Ordinary Qualified Capital Section 1250 Return of Dates Dates Dates Per Share Income Dividend Gain Gain Capital   01/07/10 01/19/10 02/16/10 $0.3600 $0.2460 $0.0000 $0.0000 $0.0000 $0.1140 04/01/10 04/15/10 05/14/10 0.3600 0.2460 0.0000 0.0000 0.0000 0.1140 07/02/10 07/15/10 08/13/10 0.3600 0.2460 0.0000 0.0000 0.0000 0.1140 10/04/10 10/15/10 11/12/10 0.3700 0.2528 0.0000 0.0000 0.0000 0.1172 TOTALS: $1.4500 $0.9908 $0.0000 $0.0000 $0.0000 $0.4592 100.00% 68.33% 0.00% 0.00% 0.00% 31.67%

SNH’s common share CUSIP number is 81721M109. This information represents final income allocations.

Senior Housing Properties Trust is a real estate investment trust, or REIT, which owns independent and assisted living communities, nursing homes, rehabilitation hospitals, wellness centers and medical office buildings throughout the United States. SNH is headquartered in Newton, MA.

A Maryland Real Estate Investment Trust with transferable shares of beneficial interest listed on the New York Stock Exchange.

No shareholder, Trustee or officer is personally liable for any act or obligation of the Trust.