Government Properties Income Trust Prices $300 Million of 4.000% Senior Notes Due 2022

Government Properties Income Trust (Nasdaq: GOV) today announced that it has priced an underwritten public offering of $300 million of 4.000% senior unsecured notes due July 15, 2022 (“Notes”). GOV expects to use the net proceeds from this offering to finance, in part, its previously announced acquisition of First Potomac Realty Trust, or FPO. Pending the consummation of the FPO acquisition and the use of proceeds described in the prior sentence GOV may repay future amounts outstanding under its revolving credit facility or invest the net proceeds from this offering in short term investments consistent with GOV’s intention to maintain its qualification for taxation as a real estate investment trust, or REIT. The closing of this offering is expected to occur on July 20, 2017, subject to customary closing conditions.

The joint book-running managers for the offering were Citigroup, BofA Merrill Lynch, Morgan Stanley, UBS Investment Bank, BBVA, Mizuho Securities, PNC Capital Markets LLC, RBC Capital Markets and Regions Securities LLC. The joint lead managers for the offering were BB&T Capital Markets, Fifth Third Securities, FTN Financial Securities Corp, Ramirez & Co., Inc., SMBC Nikko and US Bancorp.

This press release shall not constitute an offer to sell or a solicitation of an offer to buy, 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. Copies of the prospectus supplement relating to this offering and the related prospectus may be obtained by contacting the offices of: Citigroup, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by calling [phone]; BofA Merrill Lynch, NC1-004-03-43, 200 North College Street, 3rd floor, Charlotte NC 28255-0001, Attn: Prospectus Department, email: [e-mail]; Morgan Stanley, Attn: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014, telephone: [phone]; or UBS Investment Bank, Attn: Prospectus Department, 1285 Avenue of the Americas, New York, NY 10019, telephone: [phone].

Government Properties Income Trust is a real estate investment trust, or REIT, which owns properties leased primarily to the U.S. Government and state governments located throughout the United States. GOV is managed by the operating subsidiary of The RMR Group Inc. (Nasdaq: RMR), an alternative asset management company that is headquartered in Newton, MA.

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 SECURITIES LAWS. THESE FORWARD LOOKING STATEMENTS ARE BASED UPON GOV'S PRESENT BELIEFS AND EXPECTATIONS, BUT THESE STATEMENTS AND THE IMPLICATIONS OF THESE STATEMENTS ARE NOT GUARANTEED TO OCCUR AND MAY NOT OCCUR FOR VARIOUS REASONS, SOME OF WHICH ARE BEYOND GOV’S CONTROL. FOR EXAMPLE:

• THIS PRESS RELEASE STATES THAT THE CLOSING OF THE NOTES OFFERING IS EXPECTED TO OCCUR ON JULY 20, 2017. THE CLOSING OF THIS OFFERING IS SUBJECT TO VARIOUS CONDITIONS AND CONTINGENCIES AS ARE CUSTOMARY IN UNDERWRITING AGREEMENTS IN THE UNITED STATES. IF THESE CONDITIONS ARE NOT SATISFIED OR THE SPECIFIED CONTINGENCIES DO NOT OCCUR, THIS OFFERING MAY NOT CLOSE.
• GOV’S CURRENT INTENT TO USE THE NET PROCEEDS FROM THIS OFFERING TO FINANCE, IN PART, THE ACQUISITION OF FPO IS DEPENDENT ON THE CLOSING OF THIS OFFERING AND MAY NOT OCCUR.

FOR THESE REASONS, AMONG OTHERS, INVESTORS ARE CAUTIONED NOT TO PLACE UNDUE RELIANCE UPON FORWARD LOOKING STATEMENTS.

A Maryland Real Estate Investment Trust with transferable shares of beneficial interest listed on the Nasdaq.No shareholder, Trustee or officer is personally liable for any act or obligation of the Trust.

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Government Properties Income TrustChristopher Ranjitkar, 617-219-1410Director, Investor Relations