Office Properties Income Trust Common shares of beneficial interest

Office Properties Income Trust (OPI) is a national REIT that owns and leases office properties to high credit quality tenants across the United States. As of June 30, 2026, approximately 62% of its revenues came from investment grade rated tenants. OPI owned 122 properties totaling about 17.1 million square feet in 29 states and Washington, D.C. as of June 30, 2026. Managed by The RMR Group, which had over $37 billion in assets under management as of June 30, 2026, and 40 years of institutional experience in commercial real estate, OPI is based in Newton, Massachusetts, and was established on February 17, 2009, incorporated in Maryland.