NEWTON, Mass.--(BUSINESS WIRE)-- HRPT Properties Trust (NYSE: HRP) today announced that the underwriters of its previously announced public offering have exercised, in full, their overallotment option to purchase an additional 4,500,000 common shares of beneficial interest. The sale of these shares will result in HRP raising additional net proceeds, after the underwriting discount, of approximately $31.2 million. The closing of the overallotment option is expected to occur on March 24, 2010.

This offering is being conducted pursuant to an effective registration statement previously filed with the Securities and Exchange Commission. This press release shall not constitute an offer to sell, nor a solicitation of an offer to buy, shares, nor shall there be any sale of these securities in any state or jurisdiction in which the offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction.

Morgan Stanley, Citi and Wells Fargo Securities acted as joint book-running managers for this offering. Jefferies & Company, Morgan Keegan & Company, Inc., RBC Capital Markets and UBS Investment Bank acted as co-lead managers. Janney Montgomery Scott and Oppenheimer & Co. acted as co-managers. Copies of the prospectus supplement and related prospectus may be obtained from the offices of Morgan Stanley & Co. Incorporated, 180 Varick St., 2^nd Floor, New York, New York, 10014, Attention: Prospectus Department or by email at [email protected], from the offices of Citigroup Global Markets Inc., Attn: Prospectus Department, Brooklyn Army Terminal, 140 58th Street, 8th Floor, Brooklyn, NY 11220, telephone (800) 831-9146, or from the offices of Wells Fargo Securities, LLC, Attn: Equity Syndicate Department, 375 Park Avenue, New York, N.Y., 10152 (e-mail: [email protected] or telephone: 800-326-5897) or by contacting any of the other co-lead managers or co-managers listed above.

WARNING REGARDING FORWARD LOOKING STATEMENTS

THIS PRESS RELEASE CONTAINS FORWARD LOOKING STATEMENTS WITHIN THE MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 AND OTHER FEDERAL SECURITIES LAWS. THESE FORWARD LOOKING STATEMENTS ARE BASED UPON HRP'S PRESENT EXPECTATIONS, BUT THESE STATEMENTS ARE NOT GUARANTEED TO OCCUR. FOR EXAMPLE: THE FACT THAT THE UNDERWRITERS HAVE EXERCISED THEIR OPTION TO PURCHASE 4,500,000 SHARES MAY IMPLY THAT THE CLOSING OF THIS SALE OF SHARES WILL OCCUR; BUT THE CLOSING IS SUBJECT TO CONDITIONS CUSTOMARY IN TRANSACTIONS OF THIS TYPE AND MAY BE DELAYED OR MAY NOT OCCUR AT ALL. INVESTORS SHOULD NOT PLACE UNDUE RELIANCE UPON FORWARD LOOKING STATEMENTS.

    Source: HRPT Properties Trust