Office Properties Income Trust Announces the Sale of Two Properties

Office Properties Income Trust OPI today announced that it has sold two properties for an aggregate sales price of $21.9 million, excluding closing costs. The two properties include:

• A six-story, 121,711 square foot office building located at 138 Delaware Avenue in Buffalo, NY.
• A three-story, 287,037 square foot vacant office building located at 111 Powdermill Road in Maynard, MA.

The sales proceeds will be used for general corporate purposes, including the repayment of amounts outstanding on the company's unsecured term loan.

Office Properties Income Trust is a real estate investment trust, or REIT, focused on owning, operating and leasing buildings primarily leased to single tenants and those with high credit quality characteristics such as government entities. OPI is managed by the operating subsidiary of The RMR Group Inc. RMR, an alternative asset management company that is headquartered in Newton, MA.

Warning Concerning Forward-Looking Statements

This press release contains statements that constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and other securities laws. Also, whenever OPI uses words such as "believe", "expect", "anticipate", "intend", "plan", "estimate", "will", "may" and negatives or derivatives of these or similar expressions, OPI is making forward-looking statements. These forward-looking statements are based upon OPI's present intent, beliefs or expectations, but forward-looking statements are not guaranteed to occur and may not occur. Actual results may differ materially from those contained in or implied by OPI's forward-looking statements as a result of various factors. Forward-looking statements involve known and unknown risks, uncertainties and other factors, some of which are beyond OPI's control.

The information contained in OPI's filings with the SEC, including under "Risk Factors" in OPI's periodic reports, or incorporated therein, identifies other important factors that could cause OPI's actual results to differ materially from those stated in or implied by OPI's forward-looking statements. OPI's filings with the SEC are available on the SEC's website at www.sec.gov.

You should not place undue reliance upon forward-looking statements.

Except as required by law, OPI does not intend to update or change any forward-looking statements as a result of new information, future events or otherwise.

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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