Investor Presentaiton

OFFICE PROPERTIES INCOME TRUST WARNING REGARDING FORWARD LOOKING STATEMENTS, DISCLAIMERS AND NON-GAAP FINANCIAL MEASURES This presentation contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and other securities laws that are subject to risks and uncertainties. These statements may include words such as "believe", "expect", "anticipate", "intend", "plan", "estimate", "will", "may" and negatives or derivatives of these or similar expressions. These forward-looking statements include, among others, statements about: OPI's future leasing activity and pipeline; acquisition and disposition plans and opportunities; and OPI's capital recycling program. Forward-looking statements reflect OPI's current expectations, are based on judgments and assumptions, are inherently uncertain and are subject to risks, uncertainties and other factors, which could cause OPI's actual results, performance or achievements to differ materially from expected future results, performance or achievements expressed or implied in those forward-looking statements. Some of the risks, uncertainties and other factors that may cause OPI's actual results, performance or achievements to differ materially from those expressed or implied by forward-looking statements include, but are not limited to, the following: the impact of increasing or sustained high interest rates, inflation, labor market challenges, dislocation and volatility in the public equity and debt markets, conditions in the commercial real estate industry generally and in the sectors OPI operates, geopolitical instability and economic downturns or recessions on OPI and its tenants; the extent to which changes in office space utilization and needs, including due to remote work arrangements, may impact demand for office space at OPI's properties; the financial strength of OPI's tenants; risks and uncertainties regarding the costs and timing of development, redevelopment and repositioning activities, including as a result of inflation, cost overruns, supply chain challenges, labor shortages, construction delays or inability to obtain necessary permits; whether OPI's tenants will renew or extend their leases and not exercise early termination options pursuant to their leases or that OPI will obtain replacement tenants on terms as favorable to OPI as its prior leases; OPI's ability to successfully recycle and deploy capital; the likelihood that OPI's tenants will pay rent or be negatively affected by cyclical economic conditions or government budget constraints; OPI's ability to pay distributions to its shareholders and to maintain or increase the amount of such distributions; OPI's ability to increase or maintain occupancy at its properties on terms desirable to it; OPI's ability to increase rents when its leases expire or renew; OPI's tenant and geographic concentration; OPI's ability to manage its capital expenditures and other operating costs effectively and to maintain and enhance its properties and their appeal to tenants; OPI's ability to acquire properties that realize its targeted returns; OPI's ability to sell properties at prices it targets; OPI's ability to cost effectively raise and balance its use of debt and equity capital; OPI's ability to make required payments on debt; OPI's ability to maintain sufficient liquidity, including the availability of borrowings under its revolving credit facility and otherwise manage leverage; OPI's credit ratings; the ability of OPI's manager, RMR, to successfully manage OPI; OPI's qualification for taxation as a REIT; changes in federal or state tax laws; competition within the commercial real estate industry, particularly in those markets in which OPI's properties are located; compliance with, and changes to, federal, state and local laws and regulations, accounting rules, tax laws and similar matters; the impact of any U.S. government shutdown or failure to increase the government debt ceiling on OPI's ability to collect rents and pay its operating expenses, debt obligations and distributions to shareholders on a timely basis; actual and potential conflicts of interest with OPI's related parties, including its Managing Trustees, RMR, Sonesta and others affiliated with them; limitations imposed by and OPI's ability to satisfy complex rules to maintain OPI's qualification for taxation as a REIT for U.S. federal income tax purposes; acts of terrorism, outbreaks or continuation of pandemics or other public health safety events or conditions, war or other hostilities, material or prolonged disruption to supply chains, climate change, or other manmade or natural disasters beyond OPI's control; and other matters. These risks, uncertainties and other factors are not exhaustive and should be read in conjunction with other cautionary statements that are included in OPI's periodic filings. The information contained in OPI's filings with the SEC, including under the caption "Risk Factors" in its periodic reports, or incorporated therein, identifies important factors that could cause differences from the forward-looking statements in this presentation. OPI's filings with the SEC are available on the SEC's website at www.sec.gov. You should not place undue reliance upon OPI's 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. Notes Regarding Certain Information in this Presentation This presentation contains industry and statistical data that we obtained from various third party sources. Nothing in the data used or derived from third party sources should be construed as investment advice. Some data and other information presented are also based on our good faith estimates and beliefs, derived from our review of internal surveys and independent sources and our experience. We believe that these external sources, estimates and beliefs are reliable and reasonable, but we have not independently verified them. Although we are not aware of any misstatements regarding the data presented herein, these estimates and beliefs involve inherent risks and uncertainties and are based on assumptions that are subject to change. Unless otherwise expressly noted, (1) all data presented are as of or for the three months ended September 30, 2023, (2) references to "weighted average" mean a weighted average by annualized rental income, (3) references to "annualized rental income" mean the annualized contractual rents, as of September 30, 2023, including straight line rent adjustments and excluding lease value amortization, adjusted for tenant concessions, including free rent and amounts reimbursed to tenants, plus estimated recurring expense reimbursements from tenants (annualized rental income may differ from actual historical rental revenues calculated pursuant to U.S. Generally Accepted Accounting Principles, or GAAP), and (4) all data presented excludes three properties, which are encumbered by $82.0 million of mortgage notes, owned by two unconsolidated joint ventures in which we own 51% and 50% interests. Non-GAAP Financial Measures This presentation contains non-GAAP financial measures including FFO, Normalized FFO, Cash Available for Distribution, EBITDA, EBITDAre, Adjusted EBITDAre, NOI and Cash Basis NOI. Calculations of, and reconciliations for these metrics to the closest GAAP metrics, are included in an Appendix hereto. Please refer to Non-GAAP Financial Measures and Certain Definitions in the Appendix for terms used throughout this presentation. 2