Company Website: https://www.opireit.com
NEWTON, Mass. -- (Business Wire)

Office Properties Income Trust (Nasdaq: OPI) today announced its financial results for the quarter ended September 30, 2026, which can be found at the Quarterly Results section of OPI’s website at https://www.opireit.com/investors/financial-information/default.aspx.

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A conference call discussing OPI's third quarter results will be held on Tuesday, November 10, 2026 at 10:00 a.m. Eastern Time. The conference call may be accessed by dialing (877) 328-1172 or (412) 317-5418 (if calling from outside the United States and Canada); a pass code is not required. A replay will be available for one week by dialing (855) 669-9658; the replay pass code is 5128682. A live audio webcast of the conference call will also be available in a listen only mode on OPI’s website, at www.opireit.com. The archived webcast will be available for replay on OPI’s website after the call. The transcription, recording and retransmission in any way of OPI's third quarter conference call are strictly prohibited without the prior written consent of OPI.

About Office Properties Income Trust:

OPI is a national REIT focused on owning and leasing office properties to high credit quality tenants in markets throughout the United States. As of September 30, 2026, approximately 62% of OPI's revenues were from investment grade rated tenants. OPI owned 109 properties as of September 30, 2026, with approximately 15.6 million square feet located in 27 states and Washington, D.C. OPI is managed by The RMR Group (Nasdaq: RMR), a leading U.S. alternative asset management company with approximately $37 billion in assets under management as of September 30, 2026, and 40 years of institutional experience in buying, selling, financing and operating commercial real estate. OPI is headquartered in Newton, MA. For more information, visit opireit.com.

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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Contacts:

Kevin Barry, Senior Director, Investor Relations
(617) 219-1410

Source: Office Properties Income Trust