This Annual Report on Form 10-K 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 we uselaws 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, we are making forward-looking statements.expressions. These forward-looking statements include, among others, statements about: our leverage levels and possible future financings; demand for office space; our future leasing activity, commitments and obligations; economic and market conditions; our liquidity needs and sources; our capital expenditure plans and commitments; acquisitions and our pending or potential dispositions; our redevelopment and construction activities and plans; and the amount and timing of future distributions.

Forward-looking statements reflect our current expectations, are based uponon judgments and assumptions, are inherently uncertain and are subject to risks, uncertainties and other factors, which could cause our present intent, beliefsactual results, performance or expectations, butachievements 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 our actual results, performance or achievements to differ materially from those expressed or implied by forward-looking statements include, but are not guaranteedlimited to, occurthe following:

These risks, uncertainties, and costs of property development, redevelopment or repositioningother factors are not exhaustive and tenant improvement costs. Our unspent leasing related obligations and development, redevelopment or repositioning costs may cost more and may take longer to complete than we currently expect or than we planned when a project was commenced, and we may incur increased amounts for these and similar purposesshould be read in the future.

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

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

The amended and restated declaration of trust establishing Office Properties Income Trust, dated June 8, 2009, as amended, as filed with the State Department of Assessments and Taxation of Maryland, provides that no trustee, officer, shareholder, employee or agent of Office Properties Income Trust shall be held to any personal liability, jointly or severally, for any obligation of, or claim against, Office Properties Income Trust. All persons dealing with Office Properties Income Trust in any way shall look only to the assets of Office Properties Income Trust for the payment of any sum or the performance of any obligation.

We are a real estate investment trust, or REIT, formed in 2009 under Maryland law. As of December 31, 2022,2023, our wholly owned properties were comprised of 160152 properties containing approximately 21.020.5 million rentable square feet (all square footage amounts included within this Annual Report on Form 10-K are unaudited) and we had noncontrolling ownership interests of 51% and 50% in two unconsolidated joint ventures that ownowned three properties containing approximately 0.40.5 million rentable square feet. As of December 31, 2022,2023, our properties have an undepreciated carrying value of approximately $3.9$4.1 billion and a depreciated carrying value of approximately $3.4 billion, excluding properties classified as held for sale. As of December 31, 2022,2023, our properties were leased to 274258 different tenants, with a weighted average remaining lease term (based on annualized rental income as defined below) of approximately 6.66.4 years. The U.S. government is our largest tenant, representing approximately 19.7%19.5% of our annualized rental income as of December 31, 2022.2023. The term annualized rental income as used herein is defined as the annualized contractual base rents from our tenants pursuant to our lease agreements as of December 31, 2022,2023, plus straight line rent adjustments and estimated recurring expense reimbursements to be paid to us, and excluding lease value amortization.

Our principal executive offices are located at Two Newton Place, 255 Washington Street, Suite 300, Newton, Massachusetts 02458-1634, and our telephone number is (617) 219-1440.

Our business plan is to focus on acquiring, owning developing and leasing high-quality office and mixed-use properties in select, growth-oriented U.S. markets. We seek to diversify our revenue base across geographies with ownership in central business district, urban infill and suburban locations. Our approach emphasizes properties, markets or locations with high barriers to entry, qualities and characteristics to attract and retain talent and investment toward sustainability efforts.

Our internal growth strategy is to increase the rents and corresponding cash flows we receive from our current properties and to increase occupancy by leasing vacant space. To achieve these increases, we may invest in our properties through improvements requested by existing tenants or induce lease renewals or new tenant leases when our current leases expire or through development, redevelopment or repositioning activities. As our lease expirations approach, we will attempt to evaluate the highest and best use for a property and focus on proactive asset management to renew our leases with existing tenants or to enter leases with new tenants to enhance long-term cash flow growth and asset values. Our ability to renew leases with our existing tenants or to enter new leases with new tenants and the rents we are able to charge will depend in large part upon market conditions, which are beyond our control. We believe that if a property previously occupied by a single or majority tenant becomes vacant, it may be capital and time intensive to restabilize, redevelop or reposition depending on various factors including market conditions.

Our primary investment objectives include acquiringincreasing cash flows from operations from stable and diverse sources. We seek to acquire properties or portfolios that enhance our overall portfolio composition and produce greater returns than those

We expect to use the extensive nationwide resources of our manager, The RMR Group LLC, or RMR, to locate and manage the acquisition of such properties. We expect most of our future acquisitions will be office properties; however, we may consider acquiring other types of properties, including properties with specialty uses and properties which have a mix of retail or housing uses, or acquiring properties with the purpose of redeveloping them in conjunction with properties we own.properties. We also expect to further diversify our sources of rents, which we expect would improve the security of our revenues.

In implementing our acquisition strategy, we consider a range of factors relating to proposed property purchases, including:

We have in the past considered, and may in the future consider, the possibility of entering into mergers or strategic combinations with other companies. The principal goals of any such transaction will be to increase our cash flow from operations and to further diversify our revenue sources.

We have no policies which specifically limit the percentage of our assets that may be invested in any individual property, in any one type of property, in properties managed by or leased to any one entity, in properties managed by or leased to any affiliated group of entities or in securities of one or more other persons.

Our Board of Trustees may change our acquisition policies without a vote of, or notice to, our shareholders.

For more information regarding our investing activities, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in Part II, Item 7 of this Annual Report on Form 10-K.

To qualify for taxation as a REIT under the United States Internal Revenue Code of 1986, as amended, or the IRC, we must distribute at least 90% of our annual REIT taxable income (excluding net capital gains). Accordingly, we generally will not be able to retain sufficient cash to fund our operations, repay our debts, invest in our properties and fund acquisitions and development, redevelopment and repositioning efforts. We expect to use proceeds from our capital recycling program to fund acquisitions and development, redevelopment and repositioning efforts and to manage leverage at levels we believe appropriate. We also expect to repay our debts, invest in our properties and fund acquisitions and development, redevelopment and repositioning efforts with borrowings under our revolving credit facility, (as defined below), proceeds from debt or equity securities we may issue, proceeds from our asset sales or retained cash from operations that may exceed our distributions paid. To the extent we obtain additional debt financing, we may do so on an unsecured or a secured basis. We may seek to obtain lines of credit or to issue securities senior to our common shares, including preferred shares or debt securities, which may be convertible into our common shares or be accompanied by warrants to purchase our common shares or to pursue joint venture financing arrangements. We may also finance acquisitions by assuming debt or through the issuance of equity or other securities. The proceeds from any of our financings may be used to pay distributions, to provide working capital, to refinance existing indebtedness or to finance acquisitions or property developments, redevelopments or repositionings.repositionings or pay distributions.

Although there are no limitations in our organizational documents on the type or amount of indebtedness we may incur, the borrowing limitations established by the covenants in the credit agreement governing our revolving credit facility, or our credit agreement (as defined below) and our senior unsecured notes indentures and their supplements currently restrict our ability to incur indebtedness and require us to comply with certain financial and other covenants. However, we may seek to amend these covenants or seek replacement financings with less restrictive covenants. In the future, we may decide to seek changes in the financial covenants which currently restrict our debt leverage based upon then current economic conditions, the relative availability and costs of debt versus equity capital and our need for capital to take advantage of acquisition opportunities or otherwise.

We currently have a $750.0 million unsecured revolving credit facility, or our revolving credit facility, that we use for working capital and general business purposes, including to fund acquisitions and development, redevelopment and repositioning efforts on an interim basis until we may refinance with term debt or equity. In some instances, we may assume outstanding mortgage debt in connection with our acquisitions or place new mortgages on properties we own. For more information regarding our financing sources and activities, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in Part II, Item 7 and Note 9 to the Notes to Consolidated Financial Statements included in Part IV, Item 15 of this Annual Report on Form 10-K.

Generally, we intend to manage our leverage in a way that may allow us to achieve and maintain “investment grade” ratings from nationally recognized rating organizations. However, we cannot be sure that we will be able to achieve and maintain our investment grade ratings in the future.

Our Board of Trustees may change our financing policies at any time without a vote of, or notice to, our shareholders.

We believe corporate sustainability must beis a strategic focus as part of our focus on operational practices, enhancing our competitive position, development and redevelopment efforts and economic performance. Our sustainability practices, which align with those of our manager, RMR — minimizing our impact on the environment, embracing the communities where we operate and attracting top professionals — are critical elements supporting our long-term success.

We recognize our responsibility to minimize the impact of our business on the environment and seek to preserve natural resources and maximize efficiencies in order to reduce the impact our properties have on the planet. Our environmental sustainability strategies and best practices help to mitigate our properties’ environmental footprint, optimize operational efficiency and enhance our competitiveness in the marketplace. Our sustainability and community engagement strategies focus on a complementary set of objectives, including the following:

The following summary of material United States federal income tax considerations is based on existing law and is limited to investors who own our shares as investment assets rather than as inventory or as property used in a trade or business. The summary does not discuss all of the particular tax considerations that might be relevant to you if you are subject to special rules under federal income tax law, for example if you are:

The sections of the IRC that govern the federal income tax qualification and treatment of a REIT and its shareholders are complex. This presentation is a summary of applicable IRC provisions, related rules and regulations, and administrative and

Your federal income tax consequences generally will differ depending on whether or not you are a “U.S. shareholder.” For purposes of this summary, a “U.S. shareholder” is a beneficial owner of our shares that is:

If any entity (or other arrangement) treated as a partnership for federal income tax purposes holds our shares, the tax treatment of a partner in the partnership generally will depend upon the tax status of the partner and the activities of the partnership. Any entity (or other arrangement) treated as a partnership for federal income tax purposes that is a holder of our shares and the partners in such a partnership (as determined for federal income tax purposes) are urged to consult their own tax advisors about the federal income tax consequences and other tax consequences of the acquisition, ownership and disposition of our shares.

We have elected to be taxed as a REIT under Sections 856 through 860 of the IRC, commencing with our 2009 taxable year. Our REIT election, assuming continuing compliance with the then applicable qualification tests, has continued and will continue in effect for subsequent taxable years. Although we cannot be sure, we believe that from and after our 2009 taxable year we have been organized and have operated, and will continue to be organized and to operate, in a manner that qualified us and will continue to qualify us to be taxed as a REIT under the IRC.

As a REIT, we generally are not subject to federal income tax on our net income distributed as dividends to our shareholders. Distributions to our shareholders generally are included in our shareholders’ income as dividends to the extent of our available current or accumulated earnings and profits. Our dividends are not generally entitled to the preferential tax rates on qualified dividend income, but a portion of our dividends may be treated as capital gain dividends or as qualified dividend income, all as explained below. In addition, for taxable years beginning before 2026 and pursuant to the deduction-without-outlay mechanism of Section 199A of the IRC, our noncorporate U.S. shareholders that meet specified holding period requirements are generally eligible for lower effective tax rates on our dividends that are not treated as capital gain dividends or as qualified dividend income. No portion of any of our dividends is eligible for the dividends received deduction for corporate shareholders. Distributions in excess of our current or accumulated earnings and profits generally are treated for federal income tax purposes as returns of capital to the extent of a recipient shareholder’s basis in our shares, and will reduce this basis. Our current or accumulated earnings and profits are generally allocated first to distributions made on our preferred shares, of which there are none outstanding at this time, and thereafter to distributions made on our common shares. For all these purposes, our

If we continue to qualify for taxation as a REIT and meet the tests described below, then we generally will not pay federal income tax on amounts that we distribute to our shareholders. However, even if we continue to qualify for taxation as a REIT, we may still be subject to federal tax in the following circumstances, as described below:

If we fail to qualify for taxation as a REIT in any year, then we will be subject to federal income tax in the same manner as a regular C corporation. Further, as a regular C corporation, distributions to our shareholders will not be deductible by us, nor will distributions be required under the IRC. Also, to the extent of our current and accumulated earnings and profits, all distributions to our shareholders will generally be taxable as ordinary dividends potentially eligible for the preferential tax rates discussed below under the heading “—Taxation of Taxable U.S. Shareholders” and, subject to limitations in the IRC, will be potentially eligible for the dividends received deduction for corporate shareholders. Finally, we will generally be disqualified from taxation as a REIT for the four taxable years following the taxable year in which the termination of our REIT status is effective. Our failure to qualify for taxation as a REIT for even one year could result in us reducing or eliminating distributions to our shareholders, or in us incurring substantial indebtedness or liquidating substantial investments in order to pay the resulting corporate-level income taxes. Relief provisions under the IRC may allow us to continue to qualify for taxation as a REIT even if we fail to comply with various REIT requirements, all as discussed in more detail below. However, it is impossible to state whether in any particular circumstance we would be entitled to the benefit of these relief provisions.

Section 856(b) of the IRC provides that conditions (1) through (4) must be met during the entire taxable year and that condition (5) must be met during at least 335 days of a taxable year of 12 months, or during a proportionate part of a taxable year of less than 12 months. Although we cannot be sure, we believe that we have met conditions (1) through (7) during each of the requisite periods ending on or before the close of our most recently completed taxable year, and that we will continue to meet these conditions in our current and future taxable years. To help comply with condition (6), our declaration of trust restricts transfers of our shares that would otherwise result in concentrated ownership positions. These restrictions, however, do not ensure that we have previously satisfied, and may not ensure that we will in all cases be able to continue to satisfy, the share ownership requirements described in condition (6). If we comply with applicable Treasury regulations to ascertain the ownership of our outstanding shares and do not know, or by exercising reasonable diligence would not have known, that we failed condition (6), then we will be treated as having met condition (6). Accordingly, we have complied and will continue to comply with these regulations, including by requesting annually from holders of significant percentages of our shares information regarding the ownership of our shares. Under our declaration of trust, our shareholders are required to respond to

For purposes of condition (6), an “individual” generally includes a natural person, a supplemental unemployment compensation benefit plan, a private foundation, or a portion of a trust permanently set aside or used exclusively for charitable purposes, but does not include a qualified pension plan or profit-sharing trust. As a result, REIT shares owned by an entity that is not an “individual” are considered to be owned by the direct and indirect owners of the entity that are individuals (as so defined), rather than to be owned by the entity itself. Similarly, REIT shares held by a qualified pension plan or profit-sharing trust are treated as held directly by the individual beneficiaries in proportion to their actuarial interests in such plan or trust. Consequently, five or fewer such trusts could own more than 50% of the interests in an entity without jeopardizing that entity’s qualification for taxation as a REIT.

The IRC provides that we will not automatically fail to qualify for taxation as a REIT if we do not meet conditions (1) through (6), provided we can establish that such failure was due to reasonable cause and not due to willful neglect. Each such excused failure will result in the imposition of a $50,000 penalty instead of REIT disqualification. This relief provision may apply to a failure of the applicable conditions even if the failure first occurred in a year prior to the taxable year in which the failure was discovered.

In addition, any corporation (other than a REIT and other than a QRS) in which a TRS directly or indirectly owns more than 35% of the voting power or value of the outstanding securities is automatically a TRS (excluding, for this purpose, certain “straight debt” securities). Subject to the discussion below, we believe that we and each of our TRSs have complied with, and will continue to comply with, the requirements for TRS status at all times during which the subsidiary’s TRS election is intended to be in effect, and we believe that the same will be true for any TRS that we later form or acquire.

As discussed below, TRSs can perform services for our tenants without disqualifying the rents we receive from those tenants under the 75% gross income test or the 95% gross income test discussed below. Moreover, because our TRSs are taxed as C corporations that are separate from us, their assets, liabilities and items of income, deduction and credit generally are not imputed to us for purposes of the REIT qualification requirements described in this summary. Therefore, our TRSs may generally conduct activities that would be treated as prohibited transactions or would give rise to nonqualified income if conducted by us directly.

Restrictions and sanctions are imposed on TRSs and their affiliated REITs to ensure that the TRSs will be subject to an appropriate level of federal income taxation. For example, if a TRS pays interest, rent or other amounts to its affiliated REIT in an amount that exceeds what an unrelated third party would have paid in an arm’s length transaction, then the REIT generally will be subject to an excise tax equal to 100% of the excessive portion of the payment. Further, if in comparison to an arm’s length transaction, a third-party tenant has overpaid rent to the REIT in exchange for underpaying the TRS for services rendered, and if the REIT has not adequately compensated the TRS for services provided to or on behalf of the third-party tenant, then the REIT may be subject to an excise tax equal to 100% of the undercompensation to the TRS. A safe harbor exception to this excise tax applies if the TRS has been compensated at a rate at least equal to 150% of its direct cost in furnishing or rendering the service. Finally, the 100% excise tax also applies to the underpricing of services provided by a TRS to its affiliated REIT in contexts where the services are unrelated to services for REIT tenants. We cannot be sure that arrangements involving our TRSs will not result in the imposition of one or more of these restrictions or sanctions, but we do not believe that we or our TRSs are or will be subject to these impositions.

In order to qualify as “rents from real property” within the meaning of Section 856(d) of the IRC, several requirements must be met:

We believe that all or substantially all of our rents and related service charges have qualified and will continue to qualify as “rents from real property” for purposes of Section 856 of the IRC.

Absent the “foreclosure property” rules of Section 856(e) of the IRC, a REIT’s receipt of active, nonrental gross income from a property would not qualify under the 75% and 95% gross income tests. But as foreclosure property, the active, nonrental gross income from the property would so qualify. Foreclosure property is generally any real property, including interests in real property, and any personal property incident to such real property:

Property generally ceases to be foreclosure property at the end of the third taxable year following the taxable year in which the REIT acquired the property, or longer if an extension is obtained from the IRS. However, this grace period terminates and foreclosure property ceases to be foreclosure property on the first day:

Other than sales of foreclosure property, any gain that we realize on the sale of property held as inventory or other property held primarily for sale to customers in the ordinary course of a trade or business, together known as dealer gains, may be treated as income from a prohibited transaction that is subject to a penalty tax at a 100% rate. The 100% tax does not apply to gains from the sale of property that is held through a TRS, although such income will be subject to tax in the hands of the TRS at regular corporate income tax rates; we may therefore utilize our TRSs in transactions in which we might otherwise recognize dealer gains. Whether property is held as inventory or primarily for sale to customers in the ordinary course of a trade or business is a question of fact that depends on all the facts and circumstances surrounding each particular transaction. Sections 857(b)(6)(C) and (E) of the IRC provide safe harbors pursuant to which limited sales of real property held for at least two years and meeting specified additional requirements will not be treated as prohibited transactions. However, compliance with the safe harbors is not always achievable in practice. We attempt to structure our activities to avoid transactions that are prohibited transactions, or otherwise conduct such activities through TRSs; but, we cannot be sure whether or not the IRS might successfully assert that we are subject to the 100% penalty tax with respect to any particular transaction. Gains subject to the 100% penalty tax are excluded from the 75% and 95% gross income tests, whereas real property gains that are not dealer gains or that are exempted from the 100% penalty tax on account of the safe harbors are considered qualifying gross income for purposes of the 75% and 95% gross income tests.

We believe that any gain that we have recognized, or will recognize, in connection with our disposition of assets and other transactions, including through any partnerships, will generally qualify as income that satisfies the 75% and 95% gross income tests, and will not be dealer gains or subject to the 100% penalty tax. This is because our general intent has been and is to: (a) own our assets for investment (including through joint ventures) with a view to long-term income production and capital appreciation; (b) engage in the business of developing, owning, leasing and managing our existing properties and acquiring, developing, owning, leasing and managing new properties; and (c) make occasional dispositions of our assets consistent with our long-term investment objectives.

If we fail to satisfy one or both of the 75% gross income test or the 95% gross income test in any taxable year, we may nevertheless qualify for taxation as a REIT for that year if we satisfy the following requirements: (a) our failure to meet the test

Based on the discussion above, we believe that we have satisfied, and will continue to satisfy, the 75% and 95% gross income tests outlined above on a continuing basis beginning with our first taxable year as a REIT.

The IRC also provides an excepted securities safe harbor to the 10% value test that includes among other items (a) “straight debt” securities, (b) specified rental agreements in which payment is to be made in subsequent years, (c) any obligation to pay “rents from real property,” (d) securities issued by governmental entities that are not dependent in whole or in part on the profits of or payments from a nongovernmental entity, and (e) any security issued by another REIT. In addition, any debt instrument issued by an entity classified as a partnership for federal income tax purposes, and not otherwise excepted from the definition of a security for purposes of the above safe harbor, will not be treated as a security for purposes of the 10% value test if at least 75% of the partnership’s gross income, excluding income from prohibited transactions, is qualifying income for purposes of the 75% gross income test.

We have maintained and will continue to maintain records of the value of our assets to document our compliance with the above asset tests and intend to take actions as may be required to cure any failure to satisfy the tests within thirty days after the close of any quarter or within the six month periods described above.

Based on the discussion above, we believe that we have satisfied, and will continue to satisfy, the REIT asset tests outlined above on a continuing basis beginning with our first taxable year as a REIT.

For these purposes, our “real estate investment trust taxable income” is as defined under Section 857 of the IRC and is computed without regard to the dividends paid deduction and our net capital gain and will generally be reduced by specified corporate-level income taxes that we pay (e.g., taxes on built-in gains or foreclosure property income).

The IRC generally limits the deductibility of net interest expense paid or accrued on debt properly allocable to a trade or business to 30% of “adjusted taxable income,” subject to specified exceptions. Any deduction in excess of the limitation is carried forward and may be used in a subsequent year, subject to that year’s 30% limitation. Provided a taxpayer makes an election (which is irrevocable), the limitation on the deductibility of net interest expense does not apply to a trade or business involving real property development, redevelopment, construction, reconstruction, acquisition, conversion, rental, operation, management, leasing, or brokerage, within the meaning of Section 469(c)(7)(C) of the IRC. Treasury regulations provide that a real property trade or business includes a trade or business conducted by a REIT. We have made an election to be treated as a real property trade or business and accordingly do not expect the foregoing interest deduction limitations to apply to us or to the calculation of our “real estate investment trust taxable income.”

Distributions must be paid in the taxable year to which they relate, or in the following taxable year if declared before we timely file our federal income tax return for the earlier taxable year and if paid on or before the first regular distribution payment after that declaration. If a dividend is declared in October, November or December to shareholders of record during one of those months and is paid during the following January, then for federal income tax purposes such dividend will be treated as having been both paid and received on December 31 of the prior taxable year to the extent of any undistributed earnings and profits.

The 90% distribution requirements may be waived by the IRS if a REIT establishes that it failed to meet them by reason of distributions previously made to meet the requirements of the 4% excise tax discussed below. To the extent that we do not distribute all of our net capital gain and all of our “real estate investment trust taxable income,” as adjusted, we will be subject to federal income tax at regular corporate income tax rates on undistributed amounts. In addition, we will be subject to a 4% nondeductible excise tax to the extent we fail within a calendar year to make required distributions to our shareholders of 85% of our ordinary income and 95% of our capital gain net income plus the excess, if any, of the “grossed up required distribution” for the preceding calendar year over the amount treated as distributed for that preceding calendar year. For this purpose, the term “grossed up required distribution” for any calendar year is the sum of our taxable income for the calendar year without regard to the deduction for dividends paid and all amounts from earlier years that are not treated as having been distributed under the provision. We will be treated as having sufficient earnings and profits to treat as a dividend any distribution by us up to the amount required to be distributed in order to avoid imposition of the 4% excise tax.

If we do not have enough cash or other liquid assets to meet our distribution requirements, or if we so choose, we may find it necessary or desirable to arrange for new debt or equity financing to provide funds for required distributions in order to

We may be able to rectify a failure to pay sufficient dividends for any year by paying “deficiency dividends” to shareholders in a later year. These deficiency dividends may be included in our deduction for dividends paid for the earlier year, but an interest charge would be imposed upon us for the delay in distribution. While the payment of a deficiency dividend will apply to a prior year for purposes of our REIT distribution requirements and our dividends paid deduction, it will be treated as an additional distribution to the shareholders receiving it in the year such dividend is paid.

In addition to the other distribution requirements above, to preserve our qualification for taxation as a REIT we are required to timely distribute all C corporation earnings and profits that we inherit from acquired corporations, as described below.

We may elect to retain, rather than distribute, some or all of our net capital gain and pay income tax on such gain. In addition, if we so elect by making a timely designation to our shareholders, our shareholders would include their proportionate share of such undistributed capital gain in their taxable income, and they would receive a corresponding credit for their share of the federal corporate income tax that we pay thereon. Our shareholders would then increase the adjusted tax basis of their shares

Our initial tax bases in our assets will generally be our acquisition cost. We will generally depreciate our depreciable real property on a straight-line basis over forty years and our personal property over the applicable shorter periods. These

We are entitled to depreciation deductions from our properties only if we are treated for federal income tax purposes as the owner of the properties. This means that the leases of our properties must be classified for U.S. federal income tax purposes as true leases, rather than as sales or financing arrangements, and we believe this to be the case.

As described above, we expect to make distributions to our shareholders from time to time. These distributions may include cash distributions, in kind distributions of property, and deemed or constructive distributions resulting from capital market activities. The U.S. federal income tax treatment of our distributions will vary based on the status of the recipient shareholder as more fully described below under the headings “—Taxation of Taxable U.S. Shareholders,” “—Taxation of Tax-Exempt U.S. Shareholders,” and “—Taxation of Non-U.S. Shareholders.”

Section 302 of the IRC treats a redemption of our shares for cash only as a distribution under Section 301 of the IRC, and hence taxable as a dividend to the extent of our available current or accumulated earnings and profits, unless the redemption satisfies one of the tests set forth in Section 302(b) of the IRC enabling the redemption to be treated as a sale or exchange of the shares. The redemption for cash only will be treated as a sale or exchange if it (a) is “substantially disproportionate” with respect to the surrendering shareholder’s ownership in us, (b) results in a “complete termination” of the surrendering shareholder’s entire share interest in us, or (c) is “not essentially equivalent to a dividend” with respect to the surrendering shareholder, all within the meaning of Section 302(b) of the IRC. In determining whether any of these tests have been met, a shareholder must generally take into account shares considered to be owned by such shareholder by reason of constructive ownership rules set forth in the IRC, as well as shares actually owned by such shareholder. In addition, if a redemption is treated as a distribution under the preceding tests, then a shareholder’s tax basis in the redeemed shares generally will be transferred to the shareholder’s remaining shares in us, if any, and if such shareholder owns no other shares in us, such basis generally may be transferred to a related person or may be lost entirely. Because the determination as to whether a shareholder will satisfy any of the tests of Section 302(b) of the IRC depends upon the facts and circumstances at the time that our shares are redeemed, we urge you to consult your own tax advisor to determine the particular tax treatment of any redemption.

As long as we qualify for taxation as a REIT, a distribution to our U.S. shareholders that we do not designate as a capital gain dividend generally will be treated as an ordinary income dividend to the extent of our available current or accumulated earnings and profits (subject to the lower effective tax rates applicable to qualified REIT dividends via the deduction-without-outlay mechanism of Section 199A of the IRC, which is generally available to our noncorporate U.S. shareholders that meet

If for any taxable year we designate capital gain dividends for our shareholders, then a portion of the capital gain dividends we designate will be allocated to the holders of a particular class of shares on a percentage basis equal to the ratio of the amount of the total dividends paid or made available for the year to the holders of that class of shares to the total dividends paid or made available for the year to holders of all outstanding classes of our shares. We will similarly designate the portion of any dividend that is to be taxed to noncorporate U.S. shareholders at preferential maximum rates (including any qualified dividend income and any capital gains attributable to real estate depreciation recapture that are subject to a maximum 25% federal income tax rate) so that the designations will be proportionate among all outstanding classes of our shares.

We may elect to retain and pay income taxes on some or all of our net capital gain. In addition, if we so elect by making a timely designation to our shareholders:

Distributions in excess of our current or accumulated earnings and profits will not be taxable to a U.S. shareholder to the extent that they do not exceed the shareholder’s adjusted tax basis in our shares, but will reduce the shareholder’s basis in such shares. To the extent that these excess distributions exceed a U.S. shareholder’s adjusted basis in such shares, they will be included in income as capital gain, with long-term gain generally taxed to noncorporate U.S. shareholders at preferential maximum rates. No U.S. shareholder may include on its federal income tax return any of our net operating losses or any of our capital losses. In addition, no portion of any of our dividends is eligible for the dividends received deduction for corporate shareholders.

If a dividend is declared in October, November or December to shareholders of record during one of those months and is paid during the following January, then for federal income tax purposes the dividend will be treated as having been both paid and received on December 31 of the prior taxable year.

A U.S. shareholder will generally recognize gain or loss equal to the difference between the amount realized and the shareholder’s adjusted basis in our shares that are sold or exchanged. This gain or loss will be capital gain or loss, and will be long-term capital gain or loss if the shareholder’s holding period in our shares exceeds one year. In addition, any loss upon a sale or exchange of our shares held for six months or less will generally be treated as a long-term capital loss to the extent of any long-term capital gain dividends we paid on such shares during the holding period.

U.S. shareholders who are individuals, estates or trusts are generally required to pay a 3.8% Medicare tax on their net investment income (including dividends on our shares (without regard to any deduction allowed by Section 199A of the IRC) and gains from the sale or other disposition of our shares), or in the case of estates and trusts on their net investment income that is not distributed, in each case to the extent that their total adjusted income exceeds applicable thresholds. U.S. shareholders are urged to consult their tax advisors regarding the application of the 3.8% Medicare tax.

If a U.S. shareholder recognizes a loss upon a disposition of our shares in an amount that exceeds a prescribed threshold, it is possible that the provisions of Treasury regulations involving “reportable transactions” could apply, with a resulting requirement to separately disclose the loss-generating transaction to the IRS. These Treasury regulations are written quite broadly, and apply to many routine and simple transactions. A reportable transaction currently includes, among other things, a sale or exchange of our shares resulting in a tax loss in excess of (a) $10 million in any single year or $20 million in a prescribed combination of taxable years in the case of our shares held by a C corporation or by a partnership with only C corporation partners or (b) $2 million in any single year or $4 million in a prescribed combination of taxable years in the case of

Noncorporate U.S. shareholders who borrow funds to finance their acquisition of our shares could be limited in the amount of deductions allowed for the interest paid on the indebtedness incurred. Under Section 163(d) of the IRC, interest paid or accrued on indebtedness incurred or continued to purchase or carry property held for investment is generally deductible only to the extent of the investor’s net investment income. A U.S. shareholder’s net investment income will include ordinary income dividend distributions received from us and, only if an appropriate election is made by the shareholder, capital gain dividend distributions and qualified dividends received from us; however, distributions treated as a nontaxable return of the shareholder’s basis will not enter into the computation of net investment income.

The rules governing the federal income taxation of tax-exempt entities are complex, and the following discussion is intended only as a summary of material considerations of an investment in our shares relevant to such investors. If you are a tax-exempt shareholder, we urge you to consult your own tax advisor to determine the impact of federal, state, local and foreign tax laws, including any tax return filing and other reporting requirements, with respect to your acquisition of or investment in our shares.

We expect that shareholders that are tax-exempt pension plans, individual retirement accounts or other qualifying tax-exempt entities, and that receive (a) distributions from us, or (b) proceeds from the sale of our shares, should not have such amounts treated as UBTI, provided in each case (x) that the shareholder has not financed its acquisition of our shares with “acquisition indebtedness” within the meaning of the IRC, (y) that the shares are not otherwise used in an unrelated trade or business of the tax-exempt entity, and (z) that, consistent with our present intent, we do not hold a residual interest in a real estate mortgage investment conduit or otherwise hold mortgage assets or conduct mortgage securitization activities that generate “excess inclusion” income.

The rules governing the U.S. federal income taxation of non-U.S. shareholders are complex, and the following discussion is intended only as a summary of material considerations of an investment in our shares relevant to such investors. If you are a non-U.S. shareholder, we urge you to consult your own tax advisor to determine the impact of U.S. federal, state, local and foreign tax laws, including any tax return filing and other reporting requirements, with respect to your acquisition of or investment in our shares.

We expect that a non-U.S. shareholder’s receipt of (a) distributions from us, and (b) proceeds from the sale of our shares, will not be treated as income effectively connected with a U.S. trade or business and a non-U.S. shareholder will therefore not be subject to the often higher federal tax and withholding rates, branch profits taxes and increased reporting and filing requirements that apply to income effectively connected with a U.S. trade or business. This expectation and a number of the determinations below are predicated on our shares being listed on a U.S. national securities exchange, such as The Nasdaq Stock Market LLC, or Nasdaq. Each class of our shares has been listed on a U.S. national securities exchange; however, we cannot be sure that our shares will continue to be so listed in future taxable years or that any class of our shares that we may issue in the future will be so listed.

Tax treaties may reduce the withholding obligations on our distributions. Under some treaties, however, rates below 30% that are applicable to ordinary income dividends from U.S. corporations may not apply to ordinary income dividends from a

If, contrary to our expectation, a class of our shares was not listed on a U.S. national securities exchange and we made a distribution on those shares that was attributable to gain from the sale or exchange of a USRPI, then a non-U.S. shareholder holding those shares would be taxed as if the distribution was gain effectively connected with a trade or business in the United States conducted by the non-U.S. shareholder. In addition, the applicable withholding agent would be required to withhold from a distribution to such a non-U.S. shareholder, and remit to the IRS, up to 21% of the maximum amount of any distribution that was or could have been designated as a capital gain dividend. The non-U.S. shareholder also would generally be subject to the same treatment as a U.S. shareholder with respect to the distribution (subject to any applicable alternative minimum tax and a special alternative minimum tax in the case of a nonresident alien individual), would be subject to fulsome U.S. federal income tax return reporting requirements, and, in the case of a corporate non-U.S. shareholder, may owe the up to 30% branch profits tax under Section 884 of the IRC (or lower applicable tax treaty rate) in respect of these amounts.

Although the law is not entirely clear on the matter, it appears that amounts designated by us as undistributed capital gain in respect of our shares that are held by non-U.S. shareholders generally should be treated in the same manner as actual distributions by us of capital gain dividends. Under this approach, the non-U.S. shareholder would be able to offset as a credit against its resulting U.S. federal income tax liability its proportionate share of the tax paid by us on the undistributed capital gain treated as distributed to the non-U.S. shareholder, and receive from the IRS a refund to the extent its proportionate share of the tax paid by us were to exceed the non-U.S. shareholder’s actual U.S. federal income tax liability on such deemed distribution. If we were to designate any portion of our net capital gain as undistributed capital gain, a non-U.S. shareholder should consult its tax advisors regarding taxation of such undistributed capital gain.

First, for so long as a class of our shares is listed on a U.S. national securities exchange, a non-U.S. shareholder’s gain on the sale of those shares will not be subject to U.S. federal income taxation as a sale of a USRPI. Second, our shares will not constitute USRPIs if we are a “domestically controlled” REIT. We will be a “domestically controlled” REIT if less than 50% of the value of our shares (including any future class of shares that we may issue) is held, directly or indirectly, by non-U.S. shareholders at all times during the preceding five years, after applying specified presumptions regarding the ownership of our shares as described in Section 897(h)(4)(E) of the IRC. For these purposes, we believe that the statutory ownership presumptions apply to validate our status as a “domestically controlled” REIT. Accordingly, we believe that we are and will remain a “domestically controlled” REIT.

Information reporting, backup withholding, and foreign account withholding may apply to distributions or proceeds paid to our shareholders under the circumstances discussed below. If a shareholder is subject to backup or other U.S. federal income tax withholding, then the applicable withholding agent will be required to withhold the appropriate amount with respect to a deemed or constructive distribution or a distribution in kind even though there is insufficient cash from which to satisfy the withholding obligation. To satisfy this withholding obligation, the applicable withholding agent may collect the amount of U.S. federal income tax required to be withheld by reducing to cash for remittance to the IRS a sufficient portion of the property that the shareholder would otherwise receive or own, and the shareholder may bear brokerage or other costs for this withholding procedure.

Amounts withheld under backup withholding are generally not an additional tax and may be refunded by the IRS or credited against the shareholder’s federal income tax liability, provided that such shareholder timely files for a refund or credit with the IRS. A U.S. shareholder may be subject to backup withholding when it receives distributions on our shares or proceeds upon the sale, exchange, redemption, retirement or other disposition of our shares, unless the U.S. shareholder properly executes, or has previously properly executed, under penalties of perjury an IRS Form W-9 or substantially similar form that:

If the U.S. shareholder has not provided and does not provide its correct taxpayer identification number and appropriate certifications on an IRS Form W-9 or substantially similar form, it may be subject to penalties imposed by the IRS, and the applicable withholding agent may have to withhold a portion of any distributions or proceeds paid to such U.S. shareholder. Unless the U.S. shareholder has established on a properly executed IRS Form W-9 or substantially similar form that it comes within an enumerated exempt category, distributions or proceeds on our shares paid to it during the calendar year, and the amount of tax withheld, if any, will be reported to it and to the IRS.

Distributions on our shares to a non-U.S. shareholder during each calendar year and the amount of tax withheld, if any, will generally be reported to the non-U.S. shareholder and to the IRS. This information reporting requirement applies regardless of whether the non-U.S. shareholder is subject to withholding on distributions on our shares or whether the withholding was reduced or eliminated by an applicable tax treaty. Also, distributions paid to a non-U.S. shareholder on our shares will generally be subject to backup withholding, unless the non-U.S. shareholder properly certifies to the applicable withholding agent its non-U.S. shareholder status on an applicable IRS Form W-8 or substantially similar form. Information reporting and backup withholding will not apply to proceeds a non-U.S. shareholder receives upon the sale, exchange, redemption, retirement or other disposition of our shares, if the non-U.S. shareholder properly certifies to the applicable withholding agent its non-U.S. shareholder status on an applicable IRS Form W-8 or substantially similar form. Even without having executed an applicable IRS Form W-8 or substantially similar form, however, in some cases information reporting and backup withholding will not apply to proceeds that a non-U.S. shareholder receives upon the sale, exchange, redemption, retirement or other disposition of our shares if the non-U.S. shareholder receives those proceeds through a broker’s foreign office.

Non-U.S. financial institutions and other non-U.S. entities are subject to diligence and reporting requirements for purposes of identifying accounts and investments held directly or indirectly by U.S. persons. The failure to comply with these additional information reporting, certification and other requirements could result in a 30% U.S. withholding tax on applicable payments to non-U.S. persons, notwithstanding any otherwise applicable provisions of an income tax treaty. In particular, a payee that is a foreign financial institution that is subject to the diligence and reporting requirements described above must enter into an agreement with the U.S. Department of the Treasury requiring, among other things, that it undertake to identify accounts held by “specified United States persons” or “United States owned foreign entities” (each as defined in the IRC and administrative guidance thereunder), annually report information about such accounts, and withhold 30% on applicable payments to noncompliant foreign financial institutions and account holders. Foreign financial institutions located in jurisdictions that have an intergovernmental agreement with the United States with respect to these requirements may be subject to different rules. The foregoing withholding regime generally applies to payments of dividends on our shares. In general, to avoid withholding, any

Our tax treatment and that of our shareholders may be modified by legislative, judicial or administrative actions at any time, which actions may have retroactive effect. The rules dealing with federal income taxation are constantly under review by the U.S. Congress, the IRS and the U.S. Department of the Treasury, and statutory changes, new regulations, revisions to existing regulations and revised interpretations of established concepts are issued frequently. Likewise, the rules regarding taxes other than U.S. federal income taxes may also be modified. No prediction can be made as to the likelihood of passage of new tax legislation or other provisions, or the direct or indirect effect on us and our shareholders. Revisions to tax laws and interpretations of these laws could adversely affect our ability to qualify and be taxed as a REIT, as well as the tax or other

The Employee Retirement Income Security Act of 1974, as amended, or ERISA, the IRC and similar provisions to those described below under applicable foreign or state law, individually and collectively, impose certain duties on persons who are fiduciaries of any employee benefit plan subject to Title I of ERISA, or an ERISA Plan, or an individual retirement account or annuity, or an IRA, a Roth IRA, a tax-favored account (such as an Archer MSA, Coverdell education savings account or health savings account), a Keogh plan or other qualified retirement plan not subject to Title I of ERISA, each a Non-ERISA Plan. Under ERISA and the IRC, any person who exercises any discretionary authority or control over the administration of, or the management or disposition of the assets of, an ERISA Plan or Non-ERISA Plan, or who renders investment advice for a fee or other compensation to an ERISA Plan or Non-ERISA Plan, is generally considered to be a fiduciary of the ERISA Plan or Non-ERISA Plan.

Fiduciaries of an ERISA Plan must consider whether:

Fiduciaries of an ERISA Plan may incur personal liability for any loss suffered by the ERISA Plan on account of a violation of their fiduciary responsibilities. In addition, these fiduciaries may be subject to a civil penalty of up to 20% of any amount recovered by the ERISA Plan on account of a violation. Fiduciaries of any Non-ERISA Plan should consider that the Non-ERISA Plan may only make investments that are authorized by the appropriate governing instrument and applicable law.

Fiduciaries considering an investment in our securities should consult their own legal advisors if they have any concern as to whether the investment is consistent with the foregoing criteria or is otherwise appropriate. The sale of our securities to an ERISA Plan or Non-ERISA Plan is in no respect a representation by us or any underwriter of the securities that the investment meets all relevant legal requirements with respect to investments by the arrangements generally or any particular arrangement, or that the investment is appropriate for arrangements generally or any particular arrangement.

Fiduciaries of ERISA Plans and persons making the investment decision for Non-ERISA Plans should consider the application of the prohibited transaction provisions of ERISA and the IRC in making their investment decision. Sales and other transactions between an ERISA Plan or a Non-ERISA Plan and disqualified persons or parties in interest, as applicable, are prohibited transactions and result in adverse consequences absent an exemption. The particular facts concerning the

The U.S. Department of Labor has issued a regulation defining “plan assets.” The regulation, as subsequently modified by ERISA, generally provides that when an ERISA Plan or a Non-ERISA Plan otherwise subject to Title I of ERISA and/or Section 4975 of the IRC acquires an interest in an entity that is neither a “publicly offered security” nor a security issued by an

The regulation provides that whether a security is “freely transferable” is a factual question to be determined on the basis of all relevant facts and circumstances. The regulation further provides that, where a security is part of an offering in which the minimum investment is $10,000 or less, some restrictions on transfer ordinarily will not, alone or in combination, affect a finding that these securities are freely transferable. The restrictions on transfer enumerated in the regulation as not affecting that finding include:

Assuming that each class of our shares will be “widely held” and that no other facts and circumstances exist that restrict transferability of these shares, our counsel, Sullivan & Worcester LLP, is of the opinion that our shares will not fail to be “freely transferable” for purposes of the regulation due to the restrictions on transfer of our shares in our declaration of trust and that under the regulation each class of our currently outstanding shares is publicly offered and our assets will not be deemed to be “plan assets” of any ERISA Plan or Non-ERISA Plan that acquires our shares in a public offering. This opinion is conditioned upon certain assumptions and representations, as discussed above under the heading “Material United States Federal Income Tax Considerations—Taxation as a REIT.”

Our business is subject to a number of risks and uncertainties. The following is a summary of the principal risk factors described in this section:

The risks described below may not be the only risks we face, but are risks we believe may be material at this time. Other risks of which we are not yet aware, or that we currently believe are not material, may also materially and adversely impact our business operations or financial results. If any of the events or circumstances described below occurs, our business, financial condition, liquidity, results of operations or ability to pay distributions to our shareholders could be adversely impacted and the value of an investment in our securities could decline. Investors and prospective investors should consider the risks described below and the information contained under the caption “Warning Concerning Forward-Looking Statements” and elsewhere in this Annual Report on Form 10-K before deciding whether to invest in our securities. We may update these risk factors in our future periodic reports.

Our business depends on our tenants satisfying their lease obligations to us.obligations. The financial capacities of our private sector tenants to pay us rent will depend upon their abilities to successfully operate their businesses, which may be adversely affected

In addition, our government tenants are subject to discretionary funding from federal, state and local governments, as applicable. Federal government programs are subject to annual congressional budget authorization and appropriation processes, and state and local government programs are often subject to similar processes. For many federal programs, Congress appropriates funds on a fiscal year basis even though the program performance period may extend over several years. Laws and plans adopted by federal, state and local governments relating to, along with pressures on and uncertainty surrounding, budgets, potential changes in priorities and spending levels, sequestration, the appropriations process and the permissible debt limits, could adversely affect the funding for our government tenants. The budget environment and uncertainty surrounding the appropriations processes remain significant long-termlong term risks as budget cuts could adversely affect the ability of our government tenants to pay us rent.

We believe that recent government budgetary and spending priorities and enhancements in technology during the pandemic have resulted in a decrease in government office use for employees. Furthermore, over the past several years, government

Under our leases with the U.S. government, the tenants pay us rent monthly in arrears. If the U.S. government experiences a prolonged shutdown, these tenants may not pay us rent during the pendency of the shutdown. Although we expect that these tenants would pay us any outstanding rents after the shutdown ends, our available cash and leverage targets may be adversely impacted during the period we do not receive rents from these tenants. A failure to receive rents during a government shutdown may impair our ability to fund our operations and investments, pay our debt obligations, make capital expenditures and pay distributions to our shareholders. In addition, the impact of a prolonged government shutdown on government personnel resources could hinder our ability to renew expiring leases or initiate or complete renovation, construction and other capital maintenance of the affected properties. Moreover, some of our tenants are government contractors that rely on government business. If a government shutdown results in our government contractor tenants not paying us rent, the negative impact on us from a government shutdown may be compounded.

Through our capital recycling program, we seekWe plan to selectively sell certain properties from time to time to reduce our leverage, fund future acquisitions, capital requirementsexpenditures and to manage leverage at a level we believe appropriatestrategically update, rebalance and reposition our investment portfolio, with athe goal of (1) improving the asset quality of our portfolio through diversification of property types, by reducing the average age of our properties, lengthening the weighted average lease term of our leases and increasing the likelihood of retaining our tenants and (2) increasing our cash available for distribution. However, ourOur ability to sell our properties, we identify for sale, and the prices we may receive upon a sale,in any such sales may be affected by manyvarious factors. In particular, these factors could arise from, weaknessamong other things:

For example, current market conditions have caused, and may continue to cause, increased capitalization rates which, together with risinghigh interest rates, has resulted in reduced commercial real estate transaction volume, and such conditions may continue or worsen. We may not succeed in selling properties that we identify for sale,and any sales may be delayed or may not occur or, if sales do occur, the terms of any such sales may not meet our expectations and we may incur losses in connection with thoseany sales. Further,If we are unable to realize proceeds from the sale of assets sufficient to allow us to reduce our leverage to a level we, or ratings agencies or possible financing sources, believe appropriate, we may not succeed in identifying and acquiring properties that improve the asset quality ofbe unable to fund capital expenditures or future acquisitions to grow our portfolio and enable us to increase our cash available for distribution andbusiness. In addition, we may not succeed in managing leverage at levels we believe appropriate. As a result,elect to change or abandon our capital recycling program may not be successful.strategy and forego or abandon property or other asset sales.

We currently have properties under development and we intend to continue tomay engage in additional development, redevelopment and repositioning activities with respect to our properties in the future, and, as a result, we are subject to certain risks, which could adversely affect us, including our financial condition and results of operations.risks. These risks include cost overruns and untimely completion of construction due to, among other things, weather conditions, inflation, labor or material shortages or delays in receiving permits or other governmental approvals, as well as the availability and pricing of financing on favorable terms or at all. Recent supply chain constraints andThe global economy continues to experience commodity pricing and other inflation,

Our business plan includes the acquisition of additional properties. Our ability to make profitable acquisitions is subject to risks, including, but not limited to, risks associated with:

These risks may limit our ability to grow our business by acquiring additional properties. In addition, we might encounter unanticipated difficulties and expenditures relating to our acquired properties. For example:

For these reasons, among others, we might not realize the anticipated benefits of our acquisitions, and our business plan to acquire additional properties may not succeed or may cause us to experience losses.

To maintain our qualification for taxation as a REIT under the IRC, we are required to satisfy distribution requirements imposed by the IRC. See “Material United States Federal Income Tax Considerations—REIT Qualification Requirements—Annual Distribution Requirements” included in Part I, Item 1 of this Annual Report on Form 10-K. Accordingly, we may not be able to retain sufficient cash to fund our operations, repay our debts, invest in our properties or fund our acquisitions or development, redevelopment or repositioning efforts. Our business strategies therefore depend, in part, upon our ability to raise additional capital at reasonable costs. We may also be unable to raise capital at reasonable costs or at all because of reasons related to our business, market perceptions of our prospects, the terms of our existing debt, the extent of our leverage or for reasons beyond our control, such as capital market volatility, rising or sustained high interest rates and other market conditions. For example, decreased demand for leased space and increased vacancies due to continued increases in remote and other alternative work arrangements and changes in space utilization, as well as current economic conditions, have negatively impacted the availability of debt capital to office REITs on reasonable terms or at all. Because the earnings we are permitted to retain are limited by the rules

We face competition for tenants at our properties. Some competing properties may be newer, better located or more attractive to tenants. Competing properties may have lower rates of occupancy than our properties, which may result in competing owners offering available space at lower rents than we offer at our properties. Development activities may increase the supply of properties of the type we own in the leasing markets in which we own properties and increase the competition we face. Competition may make it difficult for us to attract and retain tenants and may reduce the rents we are able to charge and the values of our properties.

We also face significant competition for acquisition opportunities from other investors, including publicly traded and private REITs, numerous financial institutions, individuals, foreign investors and other public and private companies. Some of our competitors may have greater financial and other resources than us and may be able to accept more risk than we can prudently manage, including risks with respect to the creditworthiness of tenants and guarantors and the extent of leverage used in their capital structure. Because of competition for acquisitions, we may be unable to acquire desirable properties or we may pay higher prices for, and realize lower net cash flows than we hope to achieve from, acquisitions.

Some of our leases allow the tenants to vacate the leased premises before the stated terms of the leases expire with little or no liability. In particular:

For various reasons, some or all of our tenants may decide to exercise early termination rights under our leases or vacate our properties upon expiration of our leases. If a significant number of our leases are terminated pursuant to these termination rights, our income and cash flow may materially decline, our ability to pay distributions to our shareholders may be negatively impacted and the values of our properties may decline.

Our debt agreements include various conditions, covenants and events of default. We may not be able to satisfy all of these conditions or may default on some of these covenants for various reasons, including for reasons beyond our control. If any of the covenants in these debt agreements are breached and not cured within the applicable cure period, we could be required to repay the debt immediately, even in the absence of a payment default, or be prevented from refinancing maturing debt. Complying with these covenants may limit our ability to take actions that may be beneficial to us and our security holders.

In the future, we may obtain additional debt financing, and the covenants and conditions applicable to that debt may be more restrictive than the covenants and conditions that are contained in our existing debt agreements.

Recent increases in market interest rates have significantly increased our interest expense. In response to significant and prolonged increases in inflation, the U.S. Federal Reserve has raised interest rates severalmultiple times since the beginning of 2022, andwhich has announced an expectationsignificantly increased our interest expense. Although the U.S. Federal Reserve has indicated that it may lower interest rates in 2024, we cannot be sure that it will do so, and interest rates may continue to rise. The timing, number and amount of any futureincrease. High interest rate increases, and the duration that those increased rates will be in effect, are uncertain. Interest rate increases may materially and negatively affect us in several ways, including:

Our outstanding senior unsecured debt is rated investment grade by S&P Global Ratings. In determining our credit ratings, the rating agencies consider a number of both quantitative and qualitative factors, including earnings, fixed charges, cash flows, total debt outstanding, total secured debt, off balance sheet obligations, total capitalization and various ratios calculated from these factors. The rating agencies also consider predictability of cash flows, business strategy, joint venture activity, property development risks, industry conditions and contingencies. Therefore, deteriorationDowngrades in our operating performance may put further pressure on our investment grade rating. In November 2022, Moody’s downgraded our corporate credit rating from Baa3 with a stable outlook to Ba1. Although our corporate credit rating at S&P Global Ratings currently remains “BBB-” with a negative outlook, we cannot be sure that our credit ratings will not be lowered further or withdrawn in their entirety. A negative change in our ratings outlook or any further downgrade in our current investment grade credit ratings by rating agencies could adversely affect our cost and access to sources of liquidity and capital. Additionally, a further downgrade could, among other things, further increase the costs of borrowing under our revolving credit facility,capital, adversely impact our ability to obtain unsecured debt or refinance our unsecured debt on competitive terms in the future, or require us to take certain actions to support our obligations, any of which would adversely affect our business and financial condition.

Ownership of real estate is subject to risks associated with environmental hazards. Under various laws, owners as well as tenants of real estate may be required to investigate and clean up or remove hazardous substances present at or migrating from properties they own, lease or operate and may be held liable for property damage or personal injuries that result from hazardous substances. These laws also expose us to the possibility that we may become liable to government agencies or third parties for costs and damages they incur in connection with hazardous substances. The costs and damages that may arise from environmental hazards may be substantial and are difficult to assess and estimate for numerous reasons, including uncertainty about the extent of contamination, alternative treatment methods that may be applied, the location of the property which subjects it to differing local laws and regulations and their interpretations, as well as the time it may take to remediate contamination. In addition, these laws also impose various requirements regarding the operation and maintenance of properties and recordkeeping and reporting requirements relating to environmental matters that require us or the tenants of our properties to incur costs to comply with.

While our leases with non-government tenants generally require our tenants to operate in compliance with applicable lawlaws and to indemnify us against any environmental liabilities arising from their activities on our properties, applicable lawlaws may make us subject to strict liability by virtue of our ownership interests. Also, our tenants may have insufficient financial resources to satisfy their indemnification obligations under our leases or they may resist doing so. The U.S. government is not required to indemnify us for environmental hazards they create at our properties and therefore could hold us liable for environmental hazards they create at our properties and we could have no recourse to them. We may incur substantial liabilities and costs for environmental matters.

We are subject to risks and could be exposed to additional costs from adverse weather, natural disasters and adverse impacts from global climate change and climate related events.change. For example, our properties could be severely damaged or destroyed from either singular extreme weather events (such as floods, storms and wildfires) or through long-termlong term impacts of climatic conditions (such as precipitation frequency, weather instability and rise of sea levels). Such events could also adversely impact us or the tenants of our properties if we or they are unable to operate our or their businesses due to damage resulting from such events. Insurance may not adequately cover all losses sustained by us or the tenants of our properties. If we fail to adequately prepare for such events, our revenues, results of operations and financial condition may be impacted. In addition, we may incur significant costs in preparing for possible future climate change or climate related events or in response to our tenants’ requests for such investments and we may not realize desirable returns on those investments.

RMR relies on information technology and systems, including the Internet and cloud-based infrastructures and services, commercially available software and its internally developed applications, to process, transmit, store and safeguard information and to manage or support a variety of its business processes (including managing our building systems), including financial transactions and maintenance of records, which may include personal identifying information of employees, tenants and guarantors and lease data. If we or our third party vendors experience material security or other failures, inadequacies or interruptions in our or their

Security breaches, computer viruses, attacks by hackers, online fraud schemes and similar breaches have created and can create significant system disruptions, shutdowns, fraudulent transfer of assets or unauthorized disclosure of confidential information. The risk of a security breach or disruption, particularly through cyberattack or cyber intrusion, including by computer hackers, foreign governments and cyber terrorists, has generally increased as the intensity and sophistication of attempted attacks and intrusions from around the world have increased. The cybersecurity risks to us or our third party vendors are heightened by, among other things, the evolving nature of the threats faced, advances in computer capabilities, new discoveries in the field of cryptography and new and increasingly sophisticated methods used to perpetrate illegal or fraudulent activities, including cyberattacks, email or wire fraud and other attacks exploiting security vulnerabilities in RMR’s or other third parties’ information technology networks and systems or operations. Although muchmost of RMR’s staff returned to its offices during the pandemic, flexible working arrangements have resulted in a higher extent of remote working than it experienced prior to the pandemic. This and other possible changing work practices have adversely impacted, and may in the future

There is an increasingcontinues to be increased focus from regulators, investors, tenants, including the General Services Administration, and other stakeholders and regulators concerning corporate sustainability. The SEC is considering climate change related regulations and certain states have enacted climate focused disclosure laws and we may incur significant costs in compliance with such rules. Some investors may use ESG factors to guide their investment strategies and, in some cases, may choose not to invest in us, or otherwise do business with us, if they believe our or RMR’s policies relating to corporate sustainability are inadequate. Third party providers of corporate sustainability ratings and reports on companies have increased in number, resulting in varied and, in some cases, inconsistent standards. In addition, the criteria by which companies’ corporate sustainability practices are assessed are evolving, which could result in greater expectations of us and RMR and cause us and RMR to undertake costly initiatives to satisfy such new criteria. Alternatively, if we or RMR elect not to or are unable to satisfy such new criteria or do not meet the criteria of a specific third party provider, some investors may conclude that our or RMR’s policies with respect to corporate sustainability are inadequate. In July 2022, RMR announced itsPursuant to RMR’s zero emissions goal, pursuant to which itRMR has pledged to reduce its scopeScope 1 and 2 emissions to net zero by 2050 with a 50% reduction commitment by 2030 from a 2019 baseline. We and RMR may face reputational damage in the event that our or their corporate sustainability procedures or standards do not meet the goals that we or RMR have set or the standards set by various constituencies. If we and RMR fail to comply with ESG related regulations and to satisfy the expectations of investors and our tenants and other stakeholders or our or RMR’s announced goals and other initiatives are not executed as planned, our and RMR’s reputation and financial results could be adversely affected, and our revenues, results of operations and ability to grow our business may be negatively impacted. In addition, we may incur significant costs in attempting to comply with regulatory requirements, ESG policies or third party expectations or demands.

We have no employees. Personnel and services that we require are provided to us by RMR pursuant to our management agreements with RMR. Our ability to achieve our business objectives depends on RMR and its ability to effectively manage our properties, to appropriately identify and complete our acquisitions and dispositions and to execute our growth strategy. Accordingly, our business is dependent upon RMR’s business contacts, its ability to successfully hire, train, supervise and manage its personnel and its ability to maintain its operating systems. If we lose the services provided by RMR or its key personnel, our business and growth prospects may decline. We may be unable to duplicate the quality and depth of management

Our manager, RMR, is authorized to follow broad operating and investment guidelines and, therefore, has discretion in identifying the properties that will be appropriate investments for us, as well as our individual operating and investment decisions. Our Board of Trustees periodically reviews our operating and investment guidelines and our operating activities and investments but it does not review or approve each decision made by RMR on our behalf. In addition, in conducting periodic reviews, our Board of Trustees relies primarily on information provided to it by RMR. RMR may exercise its discretion in a manner that results in investment returns that are substantially below expectations or that results in losses.

RMR is a majority owned subsidiary of RMR Inc. The Chair of our Board of Trustees and one of our Managing Trustees, Adam Portnoy, is the sole trustee, an officer and the controlling shareholder of ABP Trust, which is the controlling shareholder of RMR Inc., chair of the board of directors, a managing director and the president and chief executive officer of RMR Inc. and an officer and employee of RMR. RMR or its subsidiarysubsidiaries also actsact as the manager to certain other Nasdaq listed companies and private companies, and Mr. Portnoy serves as a managing director, managing trustee, director or trustee, as applicable, of those companies, and as chair of the board of trustees or board of directors, as applicable, of those Nasdaq listed companies.

Jennifer Clark, our other Managing Trustee, Christopher Bilotto,Yael Duffy, our President and Chief Operating Officer, and Matthew Brown,Brian Donley, our Chief Financial Officer and Treasurer, are also officers and employees of RMR. Ms. Duffy is also the president and chief operating officer of Industrial Logistics Properties Trust, or ILPT, and Mr. Donley is also the chief financial officer and treasurer of Service Properties Trust, or SVC, other REITs managed by RMR. Messrs. Portnoy Bilotto and BrownDonley and Ms.Mses. Clark and Duffy have duties to RMR, Ms. Duffy has duties to ILPT and Mr. Donley has duties to SVC, as well as to us, and we do not have their undivided attention. They and other RMR personnel may have conflicts in allocating their time and resources between us and RMR and other companies to which RMR or its subsidiaries provide services. Some of our Independent Trustees also serve as independent directors or independent trustees of other public companies to which RMR or its subsidiaries provide management services.

In addition, we may in the future enter into additional transactions with RMR, its affiliates or entities managed by it or its subsidiaries. In addition to his investments in RMR Inc. and RMR, Mr. Portnoy holds equity investments in other companies to which RMR or its subsidiaries provide management services and some of these companies have significant cross ownership interests. Our executive officers may also own equity investments in other companies to which RMR or its subsidiaries provide management services. These multiple responsibilities, relationships and cross ownerships may give rise to conflicts of interest or the perception of such conflicts of interest with respect to matters involving us, RMR Inc., RMR, our Managing Trustees, the other companies to which RMR or its subsidiaries provide management services and their related parties. Conflicts of interest or the perception of conflicts of interest could have a material adverse impact on our reputation, business and the market price of our common shares and other securities and we may be subject to increased risk of litigation as a result.

In our management agreements with RMR, we acknowledge that RMR may engage in other activities or businesses and act as the manager to any other person or entity (including other REITs) even though such person or entity has investment policies and objectives similar to our policies and objectives and we are not entitled to preferential treatment in receiving information,

As a result of our relationships with RMR and its current and former controlling shareholder(s), our management agreements with RMR were not negotiated on an arm’s length basis between unrelated parties, and therefore, while such agreements were negotiated with the use of a special committee and disinterested Trustees, the terms, including the fees payable to RMR, may be different from those negotiated on an arm’s length basis between unrelated parties. Our property management

The terms of our management agreements with RMR automatically extend on December 31 of each year so that such terms thereafter end on the 20th anniversary of the date of the extension. We have the right to terminate these agreements: (1) at any time on 60 days’ written notice for convenience, (2) immediately upon written notice for cause, as defined in the agreements, (3) on written notice given within 60 days after the end of any applicable calendar year for a performance reason, as defined in the agreements, and (4) by written notice during the 12 months following a manager change of control, as defined in the agreements. However, if we terminate a management agreement for convenience, or if RMR terminates a management agreement with us for good reason, as defined in such agreement, we are obligated to pay RMR a termination fee in an amount equal to the sum of the present values of the monthly future fees, as defined in the applicable agreement, payable to RMR for the term that was remaining before such termination, which, depending on the time of termination, would be between 19 and 20 years. Additionally, if we terminate a management agreement for a performance reason, as defined in the agreement, we are obligated to pay RMR the termination fee calculated as described above, but assuming a remaining term of 10 years. These provisions substantially increase the cost to us of terminating the management agreements without cause, which may limit our ability to end our relationship with RMR as our manager. The payment of the termination fee could have a material adverse effect on our financial condition, including our ability to pay distributions to our shareholders.

Our management agreements with RMR have continuing 20 year terms that renew annually. As noted in the preceding risk factor, if we terminate either of these management agreements other than for cause or upon a change of control of our manager, we are obligated to pay RMR a substantial termination fee. For these reasons, our management agreements with RMR may discourage a change of control of us, including a change of control which might result in payment of a premium for our common shares.

We are party to transactions with related parties, including with entities controlled by Adam Portnoy or to which RMR or its subsidiaries provide management services. Our agreements with related parties or in respect of transactions among related parties may not be on terms as favorable to us as they would have been if they had been negotiated among unrelated parties. We are subject to the risk that ourOur shareholders or the shareholders of RMR Inc. or other related parties may challenge any such related party transactions. If any challenges to related party transactions were to be successful, we might not realize the benefits

Companies with business dealings with related persons and entities may more often be the target of dissident shareholder trustee nominations, dissident shareholder proposals and shareholder litigation alleging conflicts of interest in their business dealings. The various relationships noted above may precipitate such activities. Certain proxy advisory firms which have significant influence over the voting by shareholders of public companies have, in the past, recommended, and in the future may recommend, that shareholders withhold votes for the election of our incumbent Trustees, vote against our say on pay vote or other management proposals or vote for shareholder proposals that we oppose. These recommendations by proxy advisory

Our declaration of trust prohibits any shareholder, other than RMR and its affiliates (as defined under Maryland law) and certain persons who have been exempted by our Board of Trustees, from owning, directly and by attribution, more than 9.8% of the number or value of shares (whichever is more restrictive) of any class or series of our outstanding shares of beneficial interest, including our common shares. This provision of our declaration of trust is intended to, among other purposes, assist with our REIT compliance under the IRC and otherwise promote our orderly governance. However, this provision may also inhibit acquisitions of a significant stake in us and may deter, delay or prevent a change in control of us or unsolicited acquisition proposals that a shareholder may consider favorable. Additionally, provisions contained in our declaration of trust and bylaws or under Maryland law may have a similar impact, including, for example, provisions relating to:

As changes occur in the marketplace for corporate governance policies, the above provisions may change, be removed, or new ones may be added.

Our declaration of trust limits the liability of our Trustees and officers to us and our shareholders for money damages to the maximum extent permitted under Maryland law. Under current Maryland law, our Trustees and officers will not have any liability to us and our shareholders for money damages other than liability resulting from:

Our declaration of trust authorizes us, and our bylaws and indemnification agreements require us, to indemnify, to the maximum extent permitted by Maryland law, any present or former Trustee or officer who is made or threatened to be made a party to a proceeding by reason of his or her service in these and certain other capacities. In addition, we may be obligated to pay or reimburse the expenses incurred by our present and former Trustees and officers without requiring a preliminary determination of their ultimate entitlement to indemnification. As a result of these limitations on liability and indemnification obligations, we and our shareholders may have more limited rights against our present and former Trustees and officers than might exist with other companies, which could limit shareholder recourse in the event of actions thatwhich some shareholders may believe are not in our best interest.

Our shareholders agree, by virtue of becoming shareholders, that they are bound by our governing documents, including the arbitration provisions of our declaration of trust and bylaws, as they may be amended from time to time. Our governing documents provide that certain actions by one or more of our shareholders against us or any of our Trustees, officers, manager or other agents, other than disputes, or any portion thereof, regarding the meaning, interpretation or validity of any provision of our declaration of trust or bylaws, will be referred to mandatory, binding and final arbitration proceedings if we, or any other party to such dispute, including any of our Trustees, officers, manager or other agents unilaterally so demands. As a result, we and our shareholders would not be able to pursue litigation in state or federal court against us or our Trustees, officers, manager or other agents, including, for example, claims alleging violations of federal securities laws or breach of fiduciary duties or similar director or officer duties under Maryland law, if we or any of our Trustees, officers, manager or other agents against whom the claim is made unilaterally demands the matter be resolved by arbitration. Instead, our shareholders would be required to pursue such claims through binding and final arbitration.

Our governing documents provide that such arbitration proceedings would be conducted in accordance with the procedures of the Commercial Arbitration Rules of the American Arbitration Association, as modified in our bylaws. These procedures may provide materially more limited rights to our shareholders than litigation in a federal or state court. For example, arbitration in accordance with these procedures does not include the opportunity for a jury trial, document discovery is limited, arbitration hearings generally are not open to the public, there are no witness depositions in advance of arbitration hearings and arbitrators may have different qualifications or experiences than judges. In addition, although our governing documents’ arbitration provisions contemplate that arbitration may be brought in a representative capacity or on behalf of a class of our shareholders, the rules governing such representation or class arbitration may be different from, and less favorable to shareholders than, the rules governing representative or class action litigation in courts. Our governing documents also generally provide that each party to such an arbitration is required to bear its own costs in the arbitration, including attorneys’ fees, and that the arbitrators may not render an award that includes shifting of such costs or, in a derivative or class proceeding, award any portion of our award to any shareholder or such shareholder’s attorneys. The arbitration provisions of our governing documents may discourage our shareholders from bringing, and attorneys from agreeing to represent our shareholders wishing to bring, litigation against us or our Trustees, officers, manager or other agents. Our agreements with RMR have similar arbitration provisions to those in our governing documents.

We believe that the arbitration provisions in our governing documents are enforceable under both state and federal law, including with respect to federal securities laws claims. We are a Maryland real estate investment trust and Maryland courts have upheld the enforceability of arbitration bylaws. In addition, the U.S. Supreme Court has repeatedly upheld agreements to arbitrate other federal statutory claims, including those that implicate important federal policies. However, some academics, legal practitioners and others are of the view that charter or bylaw provisions mandating arbitration are not enforceable with respect to federal securities laws claims. It is possible that the arbitration provisions of our governing documents may ultimately be determined to be unenforceable.

By agreeing to the arbitration provisions of our governing documents, shareholders will not be deemed to have waived compliance by us with federal securities laws and the rules and regulations thereunder.

Our bylaws currently provide that, unless the dispute has been referred to binding arbitration, the Circuit Court for Baltimore City, Maryland will be the sole and exclusive forum for: (1) any derivative action or proceeding brought on our behalf; (2) any action asserting a claim for breach of a fiduciary duty owed by any of our Trustees, officers, manager or other agents to us or our shareholders; (3) any action asserting a claim against us or any of our Trustees, officers, manager or other agents arising pursuant to Maryland law, our declaration of trust or bylaws brought by or on behalf of a shareholder, either on such shareholder’s own behalf, on our behalf or on behalf of any series or class of shares of beneficial interest of ours or by our shareholders against us or any of our Trustees, officers, manager or other agents, including any disputes, claims or controversies relating to the meaning, interpretation, effect, validity, performance or enforcement of our declaration of trust or bylaws; or (4) any action asserting a claim against us or any of our Trustees, officers, manager or other agents that is governed by the internal affairs doctrine of the State of Maryland. Our bylaws currently also provide that the Circuit Court for Baltimore City, Maryland will be the sole and exclusive forum for any dispute, or portion thereof, regarding the meaning, interpretation or validity of any provision of our declaration of trust or bylaws. The exclusive forum provision of our bylaws does not apply to any action for which the Circuit Court for Baltimore City, Maryland does not have jurisdiction or to a dispute that has been referred to binding arbitration in accordance with our bylaws. The exclusive forum provision of our bylaws does not establish exclusive jurisdiction in the Circuit Court for Baltimore City, Maryland for claims that arise under the Securities Act, the Exchange Act or other federal securities laws if there is exclusive or concurrent jurisdiction in the federal courts. Any person or entity purchasing or otherwise acquiring or holding any interest in our shares of beneficial interest shall be deemed to have notice of and to have consented to these provisions of our bylaws, as they may be amended from time to time. The arbitration and exclusive forum provisions of our bylaws may limit a shareholder’s ability to bring a claim in a judicial forum that the shareholder believes is favorable for disputes with us or our Trustees, officers, manager or other agents, which may discourage lawsuits against us and our Trustees, officers, manager or other agents.

Our agreements with RMR provide that any dispute arising thereunder will be referred to mandatory, binding and final arbitration proceedings if we, or any other party to such dispute, unilaterally so demands. As a result, we and our operational, financing and investment policies without shareholder approval andshareholders would not be able to pursue litigation in state or federal court against RMR if we or any other parties against whom the claim is made unilaterally demands the matter be resolved by arbitration. In addition, the ability to collect attorneys’ fees or other damages may become more highly leveraged,be limited in the arbitration proceedings, which may increase our risk of default under our debt obligations.

As a REIT, we generally do not pay federal or most state income taxes as long as we distribute all of our REIT taxable income and meet other qualifications set forth in the IRC. However, actual qualification for taxation as a REIT under the IRC depends on our satisfying complex statutory requirements, for which there are only limited judicial and administrative interpretations. We believe that we have been organized and have operated, and will continue to be organized and to operate, in a manner that qualified and will continue to qualify us to be taxed as a REIT under the IRC. However, we cannot be sure that the IRS, upon review or audit, will agree with this conclusion. Furthermore, we cannot be sure that the federal government, or any state or other taxation authority, will continue to afford favorable income tax treatment to REITs and their shareholders.

Maintaining our qualification for taxation as a REIT under the IRC will require us to continue to satisfy tests concerning, among other things, the nature of our assets, the sources of our income and the amounts we distribute to our shareholders. In order to meet these requirements, it may be necessary for us to sell or forgo attractive investments.

Dividends payable by U.S. corporations to noncorporate shareholders, such as individuals, trusts and estates, are generally eligible for reduced federal income tax rates applicable to “qualified dividends.” Distributions paid by REITs generally are not treated as “qualified dividends” under the IRC and the reduced rates applicable to such dividends do not generally apply. However, for tax years beginning before 2026, REIT dividends paid to noncorporate shareholders are generally taxed at an effective tax rate lower than applicable ordinary income tax rates due to the availability of a deduction under the IRC for specified forms of income from passthrough entities. More favorable rates will nevertheless continue to apply to regular corporate “qualified” dividends, which may cause some investors to perceive that an investment in a REIT is less attractive than an investment in a non-REIT entity that pays dividends, thereby reducing the demand and market price of our common shares.

We generally must distribute annually at least 90% of our REIT taxable income, subject to specified adjustments and excluding any net capital gain, in order to maintain our qualification for taxation as a REIT under the IRC. To the extent that we satisfy this distribution requirement, federal corporate income tax will not apply to the earnings that we distribute, but if we distribute less than 100% of our REIT taxable income, then we will be subject to federal corporate income tax on our undistributed taxable income. We intend to pay distributions to our shareholders to comply with the REIT requirements of the IRC. In addition, we will be subject to a 4% nondeductible excise tax if the actual amount that we pay to our shareholders in a calendar year is less than a minimum amount specified under federal tax laws.

From time to time, we may generate taxable income greater than our income for financial reporting purposes prepared in accordance with U.S. generally accepted accounting principles, or GAAP, or differences in timing between the recognition of taxable income and the actual receipt of cash may occur. If we do not have other funds available in these situations, among other things, we may borrow funds on unfavorable terms, sell investments at disadvantageous prices or distribute amounts that would otherwise be invested in future acquisitions in order to pay distributions sufficient to enable us to distribute enough of our taxable income to satisfy the REIT distribution requirement and to avoid corporate income tax and the 4% excise tax in a particular year. These alternatives could increase our costs or reduce our shareholders’ equity. Thus, compliance with the REIT distribution requirements may hinder our ability to grow, which could cause the market price of our common shares to decline.

Even if we remain qualified for taxation as a REIT under the IRC, we may be subject to federal, state and local taxes on our income and assets, including taxes on any undistributed income, excise taxes, state or local income, property and transfer taxes and other taxes. Also, some jurisdictions may in the future limit or eliminate favorable income tax deductions, including the dividends paid deduction, which could increase our income tax expense. In addition, in order to meet the requirements for qualification and taxation as a REIT under the IRC, prevent the recognition of particular types of non-cash income, or avert the imposition of a 100% tax that applies to specified gains derived by a REIT from dealer property or inventory, we may hold or dispose of some of our assets and conduct some of our operations through our TRSs or other subsidiary corporations that will be subject to corporate level income tax at regular rates. In addition, while we intend that our transactions with our TRSs will be conducted on arm’s length bases, we may be subject to a 100% excise tax on a transaction that the IRS or a court determines was not conducted at arm’s length. Any of these taxes would decrease cash available for distribution to our shareholders.

The rules dealing with U.S. federal, state, and local taxation are constantly under review by persons involved in the legislative process and by the IRS, the U.S. Department of the Treasury and other taxation authorities. Changes to the tax laws, with or without retroactive application, could materially and adversely affect us and our shareholders. We cannot predict how changes in the tax laws might affect us or our shareholders. New legislation, Treasury regulations, administrative interpretations or court decisions could significantly and negatively affect our ability to remain qualified for taxation as a REIT or the tax consequences of such qualification to us and our shareholders.

For these reasons, among others, our distribution rate may declinenot increase for an indefinite period or we may cease paying distributions to our shareholders.

Further, in order to preserve liquidity, we may elect to, in part, pay distributions to our shareholders in part in a form other than cash, such as issuing additional common shares of ours to our shareholders, as permitted by the applicable tax rules.

We are the sole obligor on our outstanding senior unsecured notes, the 2029 Notes and any notes or other debt securities we may issue in the future, or, together with our outstanding senior unsecured notes and the 2029 Notes, and suchthe Notes. Our subsidiaries that guarantee the 2029 Notes are the sole obligors on the guarantees of such notes, or the Guarantees. The subsidiaries that guarantee the 2029 Notes do not and any Notes we may issue in the future may not be, guaranteed bycurrently guarantee any of our subsidiaries.other Notes. Our non-guarantor subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay any amounts due on the Notes or the Guarantees, or to make any funds available therefor, whether by dividend, distribution, loan or other payments. The rights of holders of the Notes to benefit from any of the assets of our non-guarantor subsidiaries are subject to the prior satisfaction of claims of our non-guarantor subsidiaries’ creditors. As a result, the Notes and the Guarantees are, and, except to the extent that future Notes are guaranteed by our subsidiaries, will be, structurally subordinated to all indebtedness and other liabilities of our subsidiaries that do not guarantee the 2029 Notes, including guarantees of or pledges under other indebtedness of ours, payment obligations under lease agreements, trade payables and preferred equity. As of December 31, 2022,2023, our non-guarantor subsidiaries had total indebtedness and other liabilities (excluding security and other deposits and guaranties) of $148.4 million.$270.8 million (including guarantees of other indebtedness and trade payables, but excluding liabilities to us or by a subsidiary guarantor), which are structurally senior to the 2029 Notes.

We have not applied for listing of certain of the Notes on any securities exchange or for quotation on any automatic dealer quotation system, and we may not do so for Notes issued in the future. We cannot be sure of the liquidity of any market that may develop for such Notes, the ability of any holder to sell such Notes or the price at which holders would be able to sell such Notes. If a market for such Notes does not develop, holders may be unable to resell such Notes for an extended period of time, if at all. If a market for such Notes does develop, it may not continue or it may not be sufficiently liquid to allow holders to resell such Notes. Consequently, holders of the Notes may not be able to liquidate their investment readily, and lenders may not readily accept such Notes as collateral for loans.

The Notes may trade at a discount from their initial issue price or principal amount, depending upon many factors, including prevailing interest rates, the ratings assigned by rating agencies, the market for similar securities and other factors, including general economic conditions and our financial condition, performance and prospects. Any decline in market prices, regardless of cause, may adversely affect the liquidity and trading markets for the Notes.

None.

As of December 31, 2022, one2023, seven of our properties with an undepreciated carrying value excluding purchase price allocations assigned to real estate intangibles, of $40.3$226.3 million, waswere encumbered by a mortgagemortgages with aan aggregate principal balance of $50.0$177.3 million. TheAs of December 31, 2023, the three properties owned by our two unconsolidated joint ventures in which we ownowned 51% and 50% interests were encumbered by two mortgages totaling $82.0 million. In January 2024, we entered into an amended and restated credit agreement, or our credit agreement, and certain of our subsidiaries pledged all of their respective equity interests in certain of our direct and indirect property owning subsidiaries and the pledged subsidiaries provided first mortgage liens on 19 properties that had an undepreciated carrying value of $758.6 million as of December 31, 2022.2023. In February 2024, we issued the 2029 Notes. The 2029 Notes are fully and unconditionally guaranteed on a joint, several and senior secured basis by certain of our subsidiaries

From time to time, we may become involved in litigation matters incidental to the ordinary course of our business. Although we are unable to predict with certainty the eventual outcome of any litigation, we are currently not a party to any litigation which we expect to have a material adverse effect on our business.

Not applicable.

Our common shares are traded on Nasdaq (symbol: OPI).

As of February 9, 2023,8, 2024, there were 1,9221,813 shareholders of record of our common shares.

The following information should be read in conjunction with our Consolidated Financial Statements and accompanying notes included in Part IV, Item 15 of this Annual Report on Form 10-K.

We are a REIT organized under Maryland law. As of December 31, 2022,2023, our wholly owned properties were comprised of 160152 properties and we had noncontrolling ownership interests of 51% and 50% in two unconsolidated joint ventures that ownowned three properties containing approximately 444,000468,000 rentable square feet. As of December 31, 2022,2023, our properties are located in 30 states and the District of Columbia and contain approximately 20,969,00020,541,000 rentable square feet. As of December 31, 2022,2023, our properties were leased to 274258 different tenants, with a weighted average remaining lease term (based on annualized rental

Leases representing approximately 15.5% and 10.6% of our annual rental income are scheduled to expire in each of 2024 and 2025, respectively, and we may be unable to renew leases or find replacement tenants. Certain changes in office space utilization, accelerated during the COVID-19 pandemic, including increased remote work arrangements and tenants consolidating their real estate footprint, continue to impact the market. The utilization and demand for office space continues to evolveface headwinds and the duration and ultimate impact of current trends on the demands for office space at our properties remains uncertain and subject to change. Accordingly, we do not yet know what the full extent of the impacts will be on our or our tenants’ businesses and operations.

For more information andabout the risks relating to the COVID-19 pandemic, inflationthese dynamics and changes in market interest ratesconditions and their impacts on us and our business, see elsewhere in this Annual Report on Form 10-K, including “Warning Concerning Forward-Looking Statements” and Part I, Item 1A, “Risk Factors”.

Unless otherwise noted, the data presented in this section includes properties classified as held for sale as of December 31, 20222023 and excludes three properties owned by two unconsolidated joint ventures in which we ownowned 51% and 50% interests.interests as of December 31, 2023. For more information regarding our properties classified as held for sale and our two unconsolidated joint ventures, see Note 4 to the Notes to Consolidated Financial Statements included in Part IV, Item 15 of this Annual Report on Form 10-K.

Occupancy data for our properties as of December 31, 20222023 and 20212022 was as follows (square feet in thousands):

The average effective rental rate per square foot for our properties for the years ended December 31, 20222023 and 20212022 were as follows:

During the year ended December 31, 2022,2023, changes in rentable square feet leased and available for lease at our properties were as follows (square feet in thousands):

Leases at our properties totaling approximately 2,884,000 rentable square feet expired during the year ended December 31, 2022. During the year ended December 31, 2022,2023, we entered into new and renewal leases as summarized in the following table (square feet in thousands):

During the year ended December 31, 2022,2023, changes in effective rental rates per square foot achieved for new leases and lease renewals at our properties that commenced during the year ended December 31, 2022,2023, when compared to prior effective rental rates per square foot in effect for the same space (and excluding space acquired vacant), were as follows (square feet in thousands):

During the years ended December 31, 20222023 and 2021,2022, amounts capitalized at our properties for lease related costs, building improvements and development, redevelopment and other activities were as follows:

In addition to the capital expenditures described above, we contributed $5,213 and $3,851 to one of our unconsolidated joint ventures during the yearyears ended December 31, 2022. We did not make any contributions to this unconsolidated joint venture during the year ended December 31, 2021.2023 and 2022, respectively. Also, as of December 31, 2022,2023, we had estimated unspent leasing related obligations of $156,693,$109,309, of which we expect to spend $86,031$67,705 over the next 12 months.

As of December 31, 2022,2023, our lease expirations by year were as follows (square feet in thousands):