Form 8-K Filing by Office Properties Income Trust

Office Properties Income Trust (the "Company") reported on its Form 8-K filing dated December 22, 2025, regarding the status of mediation proceedings. The Company and its debtor affiliates commenced voluntary chapter 11 bankruptcy cases in the Southern District of Texas on October 30, 2025. A mediation process, involving various parties including holders of different senior secured notes and an ad hoc group of unsecured note holders, commenced in early November 2025 to resolve issues related to the chapter 11 plan and other disputed matters. The mediation, overseen by a court-appointed mediator, aimed to reach a resolution on treatment of notes and other claims. Despite participation from all parties, an agreement was not reached by the deadline of December 22, 2025, and the mediator terminated the proceedings. Negotiations are not currently ongoing but may resume in the future. The filing was signed by Brian E. Donley, Chief Financial Officer and Treasurer, on December 23, 2025.