(770) 418-8800

Securities registered pursuant to Section 12(g) of the Act:

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements contained in this Form 10-K may constitute forward-looking statements within the meaning of the federal securities laws. In addition, Piedmont Office Realty Trust, Inc. ("Piedmont," "we," "our," or "us"), or its executive officers on Piedmont’s behalf, may from time to time make forward-looking statements in reports and other documents Piedmont files with the Securities and Exchange Commission or in connection with other written or oral statements made to the press, potential investors, or others. Statements regarding future events and developments and Piedmont’s future performance, as well as management’s expectations, beliefs, plans, estimates, or projections relating to the future, are forward-looking statements. Forward-looking statements include statements preceded by, followed by, or that include the words “may,” “will,” “expect,” “intend,” “anticipate,” “estimate,” “believe,” “continue,” or other similar words. Examples of such statements in this report include descriptions of our real estate, financings, and operating objectives; discussions regarding future dividends and share repurchases; and discussions regarding the potential impact of economic conditions on our real estate and lease portfolio.portfolio, among others.

These statements are based on beliefs and assumptions of Piedmont’s management, which in turn are based on information available at the time the statements are made. Important assumptions relating to the forward-looking statements include, among others, assumptions regarding the demand for office space in the markets in which Piedmont operates, competitive conditions, and general economic conditions. These assumptions could prove inaccurate. The forward-looking statements also involve risks and uncertainties, which could cause actual results to differ materially from those contained in any forward-looking statement. Many of these factors are beyond Piedmont’s ability to control or predict. Such factors include, but are not limited to, the following:

Management believes these forward-looking statements are reasonable; however, undue reliance should not be placed on any forward-looking statements, which are based on current expectations. Further, forward-looking statements speak only as of the date they are made, and management undertakes no obligation to update publicly any of them in light of new information or future events.

PART I

Piedmont Office Realty Trust, Inc. (“Piedmont," "we," "our," or "us") (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the ownership, management, development, redevelopment, and operation of high-quality, Class A office properties located primarily in select sub-markets within seven major Eastern U.S. office markets, with a majority of our annualized leaseits revenue ("ALR") being generated from the Sunbelt.Sunbelt markets. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through its wholly-owned subsidiary, Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of our buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through our wholly-owned subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP.partnership. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through various joint ventures which we control.it controls. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

As of December 31, 2020,2021, we owned and operated 5455 in-service office properties comprised of approximately 16.417.1 million square feet of primarily Class A office space which was 86.8%were approximately 86% leased. Additionally, we have one redevelopment asset comprising 127,000 square feet in Orlando, Florida. Collectively, approximately 96% of our ALR is generated primarilyfrom our properties located in select sub-markets within seven major Eastern U.S. office markets: Atlanta, Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York, with a majority of our ALR generated fromover 60% produced by our Sunbelt markets. As we typicallyWe lease space to larger,a mixture of tenants, including credit-worthy corporate tenants, and our average lease size is betweenapproximately 15,000 and 20,000 square feet with an average lease term remaining of six years. Our diversified tenant base is primarily comprised of investment grade or nationally recognized corporations or governmental agencies, with the majority of our ALR derived from such tenants. No tenant accounts for more than 5.1%5% of our ALR.

We use our proven, disciplined capital recycling capabilities to maximize total return to our stockholders by selectively disposing of non-core assets and assets for which we believe full value potential during our ownership has been achieved, and redeploying the proceeds of those dispositions into new investment opportunities with higher overall return prospects. Our overall acquisition/investment strategy focuses on properties located in select sub-markets within seven major Eastern U.S. office markets, with a particular focus on the Sunbelt markets, that were identified based on their positive economic and demographic growth trends so as to position our investments for long-term appreciation. We believe these sub-markets are generally characterized by their strong amenity base, desired location for large corporate users, above-average job and rental rate growth, proximity to robust housing options, market-leading transportation access and infrastructure, and limited competitive REIT ownership. Both our acquisition and development activities are targeted towards attractively priced, high quality, Class A office properties that complement our existing portfolio in such a manner that efficiencies can be gained and our market expertise can be maximized.

Our proactive approach to asset and property management encompasses a number of operating initiatives designed to maximize occupancy and rental rates, including the following: devoting significant resources to building and cultivating our relationships with commercial real estate executives; maintaining local management offices in markets in which we have a significant presence; offering, or being located near, superior amenities that help our tenants attract and retain their employees; demonstrating our commitment to our tenants and being socially-responsible in our local communities while maintaining the environmentally-friendly, high quality nature of our properties; renovating our buildings to keep them modern, in superior operating condition, devoting resources to building and cultivating our relationships with commercial real estate executives; and to meet and exceed the needs of today's discerning tenants, as well as driving a significant volume of leasing transactions in a manner that provides optimal returns by using creative approaches, including early extensions, lease wrap-arounds and restructurings. We manage portfolio risk by structuring lease expirations to avoid, among other things, having multiple leases expire in the same market in a relatively short period of time; applying our leasing and operational expertise in meeting the specialized requirements of federal, state and local government agencies to attract and retain these types of tenants; evaluating potential tenants based on third party and internal assessments of creditworthiness; and using our purchasing power and market knowledge to reduce our operating costs and those of our tenants.

We employ a conservative leverage strategy by typically maintaining a debt-to-gross assets ratio of between 30% to 40%, and a targeted debt to EBITDA of low 6x and below. To effectively manage our long-term leverage strategy, we continue to analyze various sources of debt capital to prudently ladder debt maturities and to determine which sources will be the most beneficial to our investment strategy at any particular point in time.

We may selectively enter into strategic joint ventures with third parties to acquire, develop, redevelop or dispose of properties, thereby potentially reducing the amount of capital required by us to make investments, diversifying our sources of capital, enabling us to creatively acquire and control targeted properties, and allowing us to reduce our investment concentration in certain properties and/or markets without disrupting our operating performance or local operating capabilities.

As circumstances warrant, we may redevelop or reposition properties within our portfolio, including the creation of additional amenities for our tenants to increase both occupancy and rental rates and thereby improve returns on our invested capital, as well as to maintain and enhance the competitive positioning of our properties in their respective marketplaces.

We are dedicated to environmentally sustainable practices that enhance our commitment to provideenhancing the highest quality office properties and produce an annual ESG report, available on our website.communities in which we operate. We strive to own and manage workplaces that are environmentally conscious, productive, and healthy for our tenants, employees, and local communities by:

Further details concerning Piedmont's environmental social, and governance policiesclimate risk management strategy and initiatives, as well as its 2019 sustainability report,programs can be found in our annual ESG report located on Piedmont'sour website, www.piedmontreit.com under the "ESG" section. The information contained on our website is not incorporated herein by reference.

Piedmont has established the Piedmont Wayne Woody ("PWW") Foundation, a foundation created toin honor of our late Chairman of the Board, W. Wayne Woody, to distribute charitable contributions to nonprofit organizations that fit our charitable giving criteria and demonstrate fiscal and administrative stability and are not discriminatory or political. During 2021 through the PWW Foundation, Piedmont established the "Piedmont Office Realty Trust Scholarship Program" in partnership with two Historically Black Colleges and Universities to provide need-based, scholastic support to selected rising sophomores interested in pursuing a career related to the real estate industry.

In addition to financial contributions through the PWW Foundation, Piedmont recognizes the value and benefit of employee volunteerism and fully appreciates its positive impact on the community, theits employees, and ultimately, Piedmont by promoting team building, collaboration, and unity. Our employees have partnered with Piedmont to donate thousands of dollars and hours annually to numerous organizations.

ALR, a non-GAAP measure, is calculated by multiplying (i) current rental payments (defined as base rent plus operating expense reimbursements, if payable by the tenant on a monthly basis under the terms of a lease that has been executed, but excluding (a) rental abatements and (b) rental payments related to executed but not commenced leases for space that was covered by an existing lease), by (ii) 12. In instances in which contractual rents or operating expense reimbursements are collected on an annual, semi-annual, or quarterly basis, such amounts are multiplied by a factor of 1, 2, or 4, respectively, to

calculate the annualized figure. For leases that have been executed but not commenced relating to unleased space, ALR is calculated by multiplying (i) the monthly base rental payment (excluding abatements) plus any operating expense reimbursements for the initial month of the lease term, by (ii) 12. Unless stated otherwise, this measure excludes revenues associated with development properties and properties taken out of service for redevelopment, if any.

Access to copies of each of our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements, and other filings with the Securities and Exchange Commission (the "SEC"), including any amendments to such filings, may be obtained free of charge from the following website, www.piedmontreit.com, or directly from the SEC’s website at www.sec.gov. These filings are available promptly after we file them with, or furnish them to, the SEC. Information contained on our website or that can be accessed through our website is not incorporated by reference into this Annual Report on Form 10-K.

The risks summarized and detailed below are not the only risks facing us. Please be aware that additional risks and uncertainties not currently known to us or that we currently believe to be immaterial could also materially harm our business, operating results, cash flows and/or financial condition, impair our future prospects, negatively affect our ability to make distributions to our stockholders and/or cause the price of our common stock to decline. You should also refer to the other information contained in our periodic reports, including the Cautionary Note Regarding Forward-Looking Statements, our consolidated financial statements and the related notes, and Management’s Discussion and Analysis of Financial Condition and Results of Operations for a further discussion of the risks, uncertainties, and assumptions relating to our business.

Material risks that may affect our business, operating results and financial condition include, but are not limited to, the following:

The investment returns available from equity investments in real estate depend on the amount of income earned and capital appreciation generated by the properties, as well as the expenses incurred in connection with the properties. If our properties do not generate income sufficient to meet operating expenses, including debt service and capital expenditures, then our ability to make distributions to our stockholders could be adversely affected. In addition, there are significant expenditures associated with an investment in real estate (such as mortgagedebt payments, real estate taxes, insurance, and maintenance costs) that generally do not decline when circumstances reduce the income from the property. The following factors, among others, may adversely affect the operating performance and long- or short-term value of our properties:

In addition, periods of economic slowdown or recession, rising interest rates, or declining demand for real estate could result in a general decrease in rents or an increased occurrence of defaults under existing leases, which would adversely affect our financial condition and results of operations. Any of the above factors may prevent us from generating sufficient cash flow to operate our business, make distributions to our stockholders, or maintain the value of our real estate properties.

Every year, we compete with a number of other developers, owners, and operators of office and office-oriented, mixed-use properties to renew leases with our existing tenants and to attract new tenants. The competition for credit worthy tenants is intense, and we may have difficulty competing, especially with competitors who have purchased properties at discounted prices allowing them to offer space at reduced rental rates, or those that have the ability to offer superior amenities or more flexible leasing terms. If our competitors offer office accommodations at rental rates below current market rates or below the rental rates we currently charge our tenants, we may lose potential tenants, and we may be pressured to reduce our rental rates below those we currently charge in order to retain tenants upon expiration of their existing leases. Even if our tenants renew their leases or we are able to re-let the space to new tenants, the terms and other costs of renewal or re-letting, including the cost of required

renovations or additional amenities, increased tenant improvement allowances, leasing commissions, declining rental rates, and other potential concessions, may be less favorable than the terms of our current leases and couldor require significant capital expenditures.outlays. If we are unable to renew leases or re-let space in a reasonable time, or if rental rates decline or tenant improvements, leasing commissions, or other costs increase, our financial condition, operating results, or cash flows could be adversely affected.

The success of our investments materially depends on the financial stability of our tenants, any of whom may experience a change in their business at any time. Many of our tenants may behave been adversely impacted by the specific consequences of the COVID-19 pandemic or various geopolitical developments that negatively affect international trade, including the uncertainty surrounding the terms of the United Kingdom’s withdrawal from the European Union or the implementation of tariffs on imported or exported goods.trade. If any of our tenants, or groups of tenants in specific industry sectors, experience or anticipate an adverse change in their respective businesses for any reason, they may delay lease commencements, decline to extend or renew their leases upon expiration, fail to make rental payments when due, or declare bankruptcy. Any of these actions could result in the termination of the tenants’ leases, or expiration of existing leases without renewal, and the loss of rental income attributable to the terminated or expired leases. In the event of a tenant default or bankruptcy, we may experience delays in enforcing our rights as a landlord and may incur substantial costs in protecting our investment and re-letting our property. If any leases are terminated or defaulted upon, we may also be unable to re-lease the property for the rent previously received or to sell the property without incurring a loss. In addition, significant expenditures related to debt payments, real estate taxes, insurance, and maintenance costs are generally fixed or may not decrease immediately when revenues at the related property decrease.

The occurrence of any of the situations described above, particularly if it involves one of our significant lead tenants, could seriously harm our operating performance. As of December 31, 2020,2021, only two tenants represented 5% or more of our revenue stream: US Bancorp (5.1%(5.0% of ALR) and State of New York (5.0% of ALR). The revenues generated by the properties that any of our lead tenants occupy are substantially dependent upon the financial condition of these tenants and, accordingly, any event of bankruptcy, insolvency, or a general downturn in the business of any of these tenants may result in the failure or delay of such tenant’s rental payments, which may have a substantial adverse effect on our operating performance.

Certain of our leases permit our tenants to terminate their leases of all or a portion of the leased premises prior to their stated lease expiration dates under certain circumstances, such as providing notice by a certain date and, in many cases, paying a termination fee. In certain cases, such early terminations can be effectuated by our tenants with little or no termination fee being paid to us. To the extent that our tenants exercise early termination rights, our cash flow and earnings will be adversely affected, and we can provide no assurances that we will be able to generate an equivalent amount of net rental income by leasing the vacated space to new third party tenants.

rules and regulations. We face additional risks and costs associated with directly managing properties occupied by government tenants, including an increased risk of default by such tenants during periods in which state or federal governments are shut down or on furlough. There are certain additional requirements relating to the potential application of the Employment Standards Administration’s Office of Federal Contract Compliance Programs and the related requirement to prepare written affirmative action plans applicable to government contractors and subcontractors. Some of the factors used to determine whether such requirements apply to a company that is affiliated with the actual government contractor (the legal entity that is the lessor under a lease with a federal government agency) include whether such company and the government contractor are under common ownership, have common management, and are under common control. One of our wholly-owned subsidiaries is considered a government contractor, increasing the risk that requirements of these equal opportunity provisions, including the requirement to prepare affirmative action plans, may be determined to be applicable to the entire operations of our company.

We continually monitor events and changes in circumstances that could indicate that the carrying value of the real estate and related lease intangible assets in which we have an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present which indicate that the carrying value of real estate and related lease intangible assets may not be recoverable, we assess the recoverability of these assets by determining whether the carrying value will be recovered through the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying value, we adjust the real estate and related lease intangible assets to their estimated fair value and recognize an impairment loss.

Projections of expected future cash flows require management to make assumptions to estimate future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. The subjectivity of assumptions used in the future cash flow analysis, including discount rates, could result in an incorrect assessment of the property’s estimated fair value and, therefore, could result in the misstatement of the carrying value of our real estate and related lease intangible assets and our net income. In addition, adverse economic conditions could also cause us to recognize additional asset impairment charges in the future, which could materially and adversely affect our business, financial condition and results of operations.

We review the value of our goodwill on an annual basis and when events or changes in circumstances indicate that the carrying value of goodwill may exceed the estimated fair value of such assets. Such interim events could be adverse changes in legal matters or in the business climate, adverse action or assessment by a regulator, the loss of key personnel, or persistent declines in our stock price below our carrying value. Volatility in the overall market could cause the price of our common stock to fluctuate and cause the carrying value of our company to exceed the estimated fair value. If that occurs, our goodwill could potentially be impaired. Impairment charges recognized in order to reduce our goodwill could materially and adversely affect our financial condition and results of operations.

Our business strategy primarily involves the acquisition of high-quality office properties in selected markets. This strategy requires us to identify suitable acquisition candidates or investment opportunities that meet our criteria and are compatible with our growth strategy. We may not be successful in identifying suitable properties or other assets that meet our acquisition criteria or in consummating acquisitions on satisfactory terms, if at all. Failure to identify or consummate acquisitions could slow our growth. Likewise, we may incur costs pursuing acquisitions that we are ultimately unsuccessful in completing.

We also face significant competition for attractive investment opportunities from a large number of other real estate investors, including investors with significant capital resources such as domestic and foreign corporations and financial institutions, publicly traded and privately held REITs, private institutional investment funds, investment banking firms, life insurance companies and pension funds. As a result of competition, we may be unable to acquire additional properties, the purchase price may be significantly elevated, or we may have to accept lease-up risk for a property with lower occupancy, any of which could adversely affect our financial condition, results of operations or cash flows.

We intend to continue acquiring high-quality office properties, subject to: the availability of attractive properties, our ability to arrange financing, and our ability to consummate acquisitions on satisfactory terms. In deciding whether to acquire a particular property, we make certain assumptions regarding the expected future performance of that property. However, newly acquired properties may fail to perform as expected. Costs necessary to bring acquired properties up to standards established for their intended market position may exceed our expectations, which may result in the properties’ failure to achieve projected returns. To the extent that we engage in acquisition activities, they will pose the following risks, among others:

We may acquire properties located in markets in which we do not have an established presence. We may face risks associated with a lack of market knowledge or understanding of the local economy, forging new business relationships in the area and unfamiliarity with local government and permitting procedures. As a result, the operating performance of properties acquired in new markets may be less than we anticipate, and we may have difficulty integrating such properties into our existing portfolio. In addition, the time and resources that may be required to obtain market knowledge and/or integrate such properties into our existing portfolio could divert our management’s attention from our existing business or other attractive opportunities.

Because real estate investments are relatively illiquid and large-scale office properties such as many of those in our portfolio are particularly illiquid, our ability to promptly sell promptly one or more properties in our portfolio in response to changing economic, financial, and investment conditions is limited. The real estate market is affected by many forces, such as general economic conditions, availability of financing, interest rates, and other factors, including supply and demand, that are beyond our control. We cannot predict whether we will be able to sell any property for the price or on the terms set by us or whether any price or other terms offered by a prospective purchaser would be acceptable to us. We also cannot predict the length of time needed to find a willing purchaser and to close the sale of a property. We may be required to expend funds to correct defects or to make improvements before a property can be sold. We cannot provide any assurances that we will have funds available to correct such defects or to make such improvements. Our inability to dispose of assets at opportune times or on favorable terms could adversely affect our cash flows and results of operations.

We may seek to dispose of properties that no longer meet our strategic plans with the intent to use the proceeds generated from such potential disposition to acquire additional properties better aligned with our investment criteria and growth strategy or to fund other operational needs. We may not be able to dispose of these properties for the proceeds we expect, or at all, and we may incur costs and divert management attention from our ongoing operations as part of efforts to dispose of these properties, regardless of whether such efforts are ultimately successful. In addition, if we are able to dispose of those properties, we may not be able to re-deploy the proceeds in a timely or more efficient manner, if at all. As such, we may not be able to adequately time any decrease in revenues from the sale of properties with a corresponding increase in revenues associated with the acquisition of new properties. The failure to dispose of properties, or to timely and more efficiently apply the proceeds from any disposition of properties to attractive acquisition opportunities, could have an adverse effect on our results of operations.

From time to time, we engage in various development and re-development projects where we may be subject to uncertainties associated with re-zoning, environmental concerns of governmental entities and/or community groups, and our builders’ ability to build in conformity with plans, specifications, budgeted costs and timetables. Delays in completing construction could also give tenants the right to terminate pre-construction leases. We may incur additional risks when we make periodic progress payments or other advances to builders before they complete construction. Further, we may incur unanticipated additional costs related to disputes with existing tenants during redevelopment projects. These and other factors can result in increased costs of a project or loss of our investment. In addition, we will be subject to normal lease-up risks relating to newly constructed projects.

From time to time, we engage in various development and redevelopment activities to the extent attractive projects become available. When we engage in development activities, we are subject to risks associated with those activities that could adversely affect our financial condition, results of operations and cash flows, including, but not limited to:

Our portfolio of properties is primarily located in the following major metropolitan areas: Dallas, Atlanta, Washington, D.C., Minneapolis, Boston, Orlando, and New York, any of which could be, and some of which have been, the target of terrorist attacks, armed hostilities, or armed hostilities.civil unrest. Future terrorist attacks and other acts of hostility, civil unrest, or war could severely impact the demand for, and value of, our properties. Terrorist attacks, other armed hostilities, or civil unrest in and around any of the major metropolitan areas in which we own properties also could directly impact the value of our properties through damage, destruction, loss, or increased security costs, and could thereafter materially impact the availability or cost of insurance to protect against such acts. Attacks, or armed conflicts, or civil unrest could result in increased operating costs including building security, property and casualty insurance, and property maintenance. As a result of terrorist activities, or other armed hostilities or civil unrest, the cost of insurance coverage for our properties could also increase. In addition, our insurance policies may not recover all our property replacement costs and lost revenue resulting from an attack. A decrease in demand could also make it difficult to renew or re-lease our properties at lease rates equal to or above historical rates. To the extent that any future terrorist attacks, or armed hostilities, or civil unrest otherwise disrupt our tenants’ businesses, it may impair our tenants’ ability to make timely payments under their existing leases with us, which would harm our operating results.

A cyber incident is considered to be any adverse event that threatens the confidentiality, integrity, functionality, or availability of our information resources and systems. More specifically, a cyber incident is an intentional attack or an unintentional event that can include gaining unauthorized access to systems to disrupt building or corporate operations, corrupt data, or steal confidential information. While we have not experienced any material cyber incidents in the past, the risk of a security breach or disruption, particularly through cyber attacks or cyber intrusion, including by computer hackers, foreign governments and cyber terrorists, has generally increased as the number, intensity and sophistication of attempted attacks and intrusions from around the world have increased. As our reliance on technology has increased, so have the risks posed to our systems, both internal and those we have outsourced. Risks that could directly result from the occurrence of a cyber incident include physical harm to occupants of our buildings, physical damage to our buildings, actual cash loss, operational interruption, damage to our relationship and reputation with our tenants, potential errors from misstated financial reports, violations of loan covenants, missed reporting deadlines, and private data exposure, among others. Any or all of the preceding risks could have a material adverse effect on our results of operations, financial condition and cash flows.

We are continuously developing and enhancing our controls, processes, and practices designed to protect our systems, computers, software, data, and networks from attack, damage, or unauthorized access. This continued development and enhancement will require us to expend additional resources, including to investigate and remediate any information security vulnerabilities that may be detected. Although we make efforts to maintain the security and integrity of these types of information technology networks and related systems, and despite various measures we have implemented to manage the risk of a security breach or disruption, there can be no assurance that our security efforts and measures will be effective or that attempted security breaches or disruptions would not be successful or damaging. Even the most well protected information, networks, systems and facilities remain potentially vulnerable because the techniques used in such attempted security breaches

evolve and generally are not recognized until launched against a target, and in some cases are designed to not be detected. Accordingly, we may be unable to anticipate these techniques or to implement adequate security barriers or other preventative measures, and thus it is impossible for us to entirely mitigate this risk.

Further, one or more of our tenants could experience a cyber incident which could impact their operations and ability to perform under the terms of their lease with us.

We carry comprehensive general liability, fire, rental loss, environmental, cybersecurity, and umbrella liability coverage on all of our properties and earthquake, wind, and flood coverage on properties in areas where such coverage is warranted. We believe the policy specifications and insured limits of these policies are adequate and appropriate given the relative risk of loss, the cost of the coverage, and industry practice. However, we may be subject to certain types of losses, those that are generally catastrophic in nature, such as losses due to wars, conventional or cyber terrorism, armed hostilities, chemical, biological, nuclear and radiation (“CBNR”) acts of terrorism and, in some cases, earthquakes, hurricanes, and flooding, either because such coverage is not available or is not available at commercially reasonable rates. If we experience a loss that is uninsured or that exceeds policy limits, we could lose a significant portion of the capital we have invested in the damaged property, as well as the anticipated future revenue from the property. Inflation, changes in building codes and ordinances, environmental considerations, and other factors also might make it impractical or undesirable to use insurance proceeds to replace a property after it has been damaged or destroyed. In addition, if the damaged properties are subject to recourse indebtedness, we would continue to be liable for the indebtedness, even if these properties were irreparably damaged. Furthermore, we may not be able to obtain adequate insurance coverage at reasonable costs in the future, as the costs associated with property and casualty renewals may be higher than anticipated.

In addition, insurance risks associated with potential terrorist acts could sharply increase the premiums we pay for coverage against property and casualty claims. Under the Terrorism Risk Insurance Act, which is currently effective through December 31, 2027, United States insurers cannot exclude conventional (non-CBNR) terrorism losses and must make terrorism insurance available under their property and casualty insurance policies. However, this legislation does not regulate the pricing of such insurance. In some cases, lenders may insist that commercial property owners purchase coverage against terrorism as a condition of providing financing. Such insurance policies may not be available at a reasonable cost, which could inhibit our ability to finance or refinance our properties. In such instances, we may be required to provide other financial support, either through financial assurances or self-insurance, to cover potential losses. We may not have adequate coverage for such losses.

We carry several different lines of insurance, placed with several large insurance carriers. If any one of these large insurance carriers were to become insolvent, we would be forced to replace the existing insurance coverage with another suitable carrier, and any outstanding claims would be at risk for collection. In such an event, we cannot be certain that we would be able to replace the coverage at similar or otherwise favorable terms. Replacing insurance coverage at unfavorable rates and the potential of uncollectible claims due to carrier insolvency could adversely impact our results of operations and cash flows.

From time to time we may enter into strategic joint ventures with institutional investors to acquire, develop, improve, and/or dispose ofimprove properties, thereby reducing the amount of capital required by us to make investments and diversifying our capital sources for growth. Such joint venture investments involve risks not otherwise present in a wholly-owned property, development, or redevelopment project, including but not limited to the following:

Any of the above might subject a property to liabilities in excess of those contemplated and thus reduce the returns to our investors.

All real property and the operations conducted on real property are subject to federal, state, and local laws and regulations relating to environmental protection and human health and safety. In addition, under the Americans with Disabilities Act ("ADA"), places of public accommodation must meet certain federal requirements related to access and use by disabled persons. Tenants’ ability to operate and to generate income to pay their lease obligations may be affected by permitting and compliance obligations arising under such laws and regulations. Some of these laws and regulations may impose joint and several liability on tenants, owners, or operators for the costs to investigate or remediate contaminated properties, regardless of fault or whether the acts causing the contamination were legal. Noncompliance with ADA could result in the imposition of fines by the federal government or the award of damages to private litigants. In addition, the presence of hazardous substances, or the failure to properly remediate these substances, may hinder our ability to sell, rent, or pledge such property as collateral for future borrowings.

Compliance with new laws or regulations or stricter interpretation of existing laws by agencies or the courts may require us to incur material expenditures or may impose additional liabilities on us, including environmental liabilities. In addition, there are various local, state, and federal fire, health, life-safety, and similar regulations with which we may be required to comply, and which may subject us to liability in the form of fines or damages for noncompliance. Although we believe that our properties are currently in material compliance with these regulatory requirements, we have not conducted an audit or investigation of all of our properties to determine our compliance, and we cannot predict the ultimate cost of compliance. Any material expenditures, liabilities, fines, or damages we must pay will reduce our net income and cash flows.

Under various federal, state, and local environmental laws, ordinances, and regulations, a current or former owner or operator of real property may be liable for the cost to remove or remediate hazardous or toxic substances, wastes, or petroleum products on, under, from, or in such property. These costs could be substantial and liability under these laws may attach whether or not the owner or operator knew of, or was responsible for, the presence of such contamination. As a result, our tenants’ operations, the existing condition of land when we buy it, operations in the vicinity of our properties such as the presence of underground storage tanks or activities of unrelated third parties may affect our properties. Even if more than one party may have been responsible for the contamination, each liable party may be held entirely responsible for all of the clean-up costs incurred. In addition, third parties may sue the owner or operator of a property for damages based on personal injury, natural resources, or property damage and/or for other costs, including investigation and clean-up costs, resulting from the environmental contamination. The presence of contamination on one of our properties, or the failure to properly remediate a contaminated property, could give rise to a lien in favor of the government for costs it may incur to address the contamination, or otherwise adversely affect our ability to sell or lease the property or borrow using the property as collateral. In addition, if contamination is discovered on our properties, environmental laws may impose restrictions on the manner in which property may be used or businesses may be operated, and these restrictions may require substantial expenditures or prevent us from entering into leases with prospective tenants.

Some of our properties are adjacent to or near other properties that have contained or currently contain underground storage tanks used to store petroleum products or other hazardous or toxic substances. In addition, certain of our properties are on,

adjacent to, or near sites upon which others, including former owners or tenants of our properties, have engaged, or may in the future engage, in activities that have released or may have released petroleum products or other hazardous or toxic substances.

The cost of defending against claims of liability, of remediating any contaminated property, or of paying personal injury claims could reduce our net income and cash flows.

Some of our properties have building materials that contain asbestos. Environmental laws require that owners or operators of buildings containing asbestos properly manage and maintain the asbestos, adequately inform or train those who may come into contact with asbestos, and undertake special precautions, including removal or other abatement, in the event that asbestos is disturbed during building renovation or demolition. These laws may impose fines and penalties on building owners or operators who fail to comply with these requirements. In addition, environmental laws and the common law may allow third parties to seek recovery from owners or operators for personal injury associated with exposure to asbestos.

The properties also may contain or develop harmful mold or suffer from other air quality issues. Any of these materials or conditions could result in liability for personal injury and costs of remediating adverse conditions, which could have an adverse effect on our results of operations or cash flows.

Some of our tenants may handle regulated substances and wastes as part of their operations at our properties. Environmental laws regulate the handling, use, and disposal of these materials and subject our tenants, and potentially us, to liability resulting from non-compliance with these requirements. The properties in our portfolio also are subject to various federal, state, and local health and safety requirements, such as state and local fire requirements. If we or our tenants fail to comply with these various requirements, we might incur governmental fines or private damage awards. Moreover, we do not know whether or the extent to which existing requirements or their enforcement will change or whether future requirements will require us to make significant unanticipated expenditures, either of which could materially and adversely impact our financial condition, results of operations or cash flows. If our tenants become subject to liability for noncompliance, it could affect their ability to make rental payments to us.

The physical effects of climate change could have a material adverse effect on our properties, operations, and business. The majority of our portfolio of properties is located along the Eastern coast of the United States. To the extent that climate change causes variations in weather patterns, our markets could experience increases in storm intensity, larger flood zones, and/or rising sea-levels. Over time, these conditions could result in physical damage to our buildings or a decline in demand for office

Transitioning to a lower-carbon economy may entail extensive policy, legal, technological, and market changes to address mitigation and adaption requirements related to climate change. Depending on the nature, speed, and focus of these changes, transition risks may pose varying levels of financial and reputational risk to us and/or our tenants. Policy action around climate change such as implementing carbon-pricing mechanisms to reduce green house gas emission, shifting energy use toward lower emission sources, adopting energy-efficiency solutions, encouraging greater water efficiency measures, and promoting more sustainable land-use practices can result in financial impacts to both us and our tenants.tenants, including additional costs of auditing and reporting such data. Alterations to third-party certifications/ratings may impact investor or tenant demand and consequential valuation for buildings with lower scoring. Climate related litigation claims can result in financial and reputational damage. Technology improvements or innovations that support the transition to a lower-carbon, energy efficient economic system and shifts in supply and demand for certain commodities, products, and services as climate-related risks and opportunities are increasingly taken into account may affect the strength and competitiveness of our tenants' business, and ultimately their ability to meet their rental obligations to us. Climate change has also been identified as a potential source of reputational risk tied to changing customer or community perceptions of an organization's contribution to or detraction from the transition to a lower-carbon economy.

Our continued success depends to a significant degree upon the continued contributions of certain key personnel, each of whom would be difficult to replace. Our ability to retain our management team, or to attract suitable replacements should any member of the management team leave, is dependent on the competitive nature of the employment market. The loss of services of one or more key members of our management team could adversely affect our results of operations and slow our future growth. While we have planned for the succession of each of the key members of our management team, our succession plans may not effectively prevent any adverse effects from the loss of any member of our management team. We have not obtained and do not expect to obtain “key person” life insurance on any of our key personnel.

From time to time, we may be subject to legal action arising in the ordinary course of our business or otherwise. Such action could distract key personnel from management of the company and result in additional expenses which, if uninsured, could adversely impact our earnings and cash flows, thereby impacting our ability to service our debt and make quarterly distributions to our stockholders. There can be no assurance that our insurance policies will fully cover any payments or legal costs associated with any potential legal action. Further, the ultimate resolution of such action could impact the availability or cost of some of our insurance coverage, which could adversely impact our results of operations and cash flows, expose us to increased risks that would be uninsured, and/or adversely impact our ability to attract officers and candidates for our board of directors.

The design and effectiveness of our disclosure controls and procedures and our internal control over financial reporting may not prevent all errors, misstatements, or misrepresentations. Although management will continue to review the effectiveness of our disclosure controls and procedures and our internal control over financial reporting, there can be no guarantee that these processes will be effective in accomplishing all control objectives all of the time. Deficiencies, including any material weakness, in our internal control over financial reporting which may occur in the future could result in misstatements of our results of operations, restatements of our financial statements, a decline in the trading price of our common stock, or otherwise materially adversely affect our business, reputation, results of operations, financial condition, or liquidity.

Our charter and bylaws contain provisions that may have the effect of delaying, deferring, or preventing a change in control of our company (including an extraordinary transaction such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price for our common stock or otherwise be in the best interest of our stockholders. These provisions include, among other things, restrictions on the ownership and transfer of our stock, advance notice requirements for

Our charter, with certain exceptions, authorizes our board of directors to take such actions as are necessary and desirable to preserve our qualification as a REIT for federal income tax purposes. Unless exempted by our board of directors, no person may actually or constructively own more than 9.8% (by value or number of shares, whichever is more restrictive) of the outstanding shares of our common stock or the outstanding shares of any class or series of our preferred stock, which may inhibit large investors from desiring to purchase our stock. This restriction may have the effect of delaying, deferring, or preventing a change in control, including an extraordinary transaction (such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price for our common stock or otherwise be in the best interest of our stockholders.

Our board of directors has overall authority to oversee our operations and determine our major corporate policies. This authority includes significant flexibility. For example, our board of directors can do the following:

Any of these actions could increase our operating expenses, impact our ability to make distributions, or reduce the value of our assets without giving our stockholders the right to vote.

Our board of directors may, without stockholder approval, issue authorized but unissued shares of our common or preferred stock and amend our charter to increase or decrease the aggregate number of shares of stock or the number of shares of stock of any class or series that we have authority to issue. In addition, our board of directors may, without stockholder approval, classify or reclassify any unissued shares of our common or preferred stock and set the preferences, rights and other terms of such classified or reclassified shares. Thus, our board of directors could authorize the issuance of preferred stock with terms and conditions that could have priority with respect to distributions and amounts payable upon liquidation over the rights of the holders of our common stock. Such preferred stock also could have the effect of delaying, deferring, or preventing a change in control, including an extraordinary transaction (such as a merger, tender offer, or sale of all or substantially all of our assets) that might provide a premium price for our common stock, or otherwise be in the best interest of our stockholders.

Certain provisions of Maryland law may have the effect of inhibiting a third party from making a proposal to acquire us, or of impedingthese certain provisions may also impede a change of control under certain circumstances that otherwise could provide the holders of shares of our common stock with the opportunity to realize a premium over the then-prevailing market price of such shares, including:

Our bylaws contain a provision exempting any acquisition by any person of shares of our stock from the control share acquisition statute, and our board of directors has adopted a resolution exempting any business combination with any person from the business combination statute. As a result, these provisions currently will not apply to a business combination or control share acquisition involving our company. However, our board of directors maystill has the ability to opt into the business combination provisions and the control share provisions of Maryland law in the future.

Our charter, our bylaws, the limited partnership agreement of our operating partnership, and Maryland law also contain other provisions that may delay, defer, or prevent a transaction or a change of control that might involve a premium price for our common stock or otherwise be in the best interest of our stockholders. In addition, the employment agreements with certain of our executive officers contain, and grants under our incentive plan also may contain, change-in-control provisions that might similarly have an anti-takeover effect, inhibit a change of our management, or inhibit in certain circumstances tender offers for our common stock or proxy contests to change our board.

Maryland law provides that a director or officer has no liability in that capacity if he or she performs his or her duties in good faith, in a manner he or she reasonably believes to be in our best interest and with the care that an ordinarily prudent person in a like position would use under similar circumstances. Our charter eliminates our board of directors’ and officers’ liability to us and our stockholders for money damages except for liability resulting from actual receipt of an improper benefit or profit in money, property, or services or active and deliberate dishonesty established by a final judgment and which is material to the cause of action. Our charter and bylaws require us to indemnify our board of directors and officers to the maximum extent permitted by Maryland law for any claim or liability to which they may become subject or which they may incur by reason of their service as members of the board of directors or officers, except to the extent that the act or omission of the director or officer was material to the matter giving rise to the proceeding and was committed in bad faith or was the result of active and deliberate dishonesty, the director or officer actually received an improper personal benefit in money, property, or services, or, in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful. As a result, we and our stockholders may have more limited rights against our board of directors and officers than might otherwise exist under common law, which could reduce our and our stockholders’ recovery from these persons if they act in a negligent manner. In addition, we may be obligated to fund the defense costs incurred by our board of directors and officers (as well as by our employees and agents) in some cases.

We are owned and operated in a manner intended to qualify us as a REIT for U.S. federal income tax purposes; however, we do not have a ruling from the IRS as to our REIT status. In addition, we own all of the common stock of a subsidiary that has elected to be treated as a REIT, and if our subsidiary REIT were to fail to qualify as a REIT, it is possible that we also would fail to qualify as a REIT unless we (or the subsidiary REIT) could qualify for certain relief provisions. Our qualification and the qualification of our subsidiary REIT as a REIT will depend on satisfaction, on an annual or quarterly basis, of numerous requirements set forth in highly technical and complex provisions of the Code for which there are only limited judicial or administrative interpretations. A determination as to whether such requirements are satisfied involves various factual matters and circumstances not entirely within our control. The fact that we hold substantially all of our assets through our operating partnership and its subsidiaries further complicates the application of the REIT requirements for us. No assurance can be given that we, or our subsidiary REIT, will qualify as a REIT for any particular year.

If we, or our subsidiary REIT, were to fail to qualify as a REIT in any taxable year for which a REIT election has been made, the non-qualifying REIT would not be allowed a deduction for dividends paid to its stockholders in computing our taxable income and would be subject to U.S. federal income tax on its taxable income at corporate rates. Moreover, unless the non-

Even if we maintain our status as a REIT, we may be subject to U.S. federal income taxes or state taxes, which would reduce our cash available for distribution to our stockholders. For example, we will be subject to federal income tax on any undistributed REIT taxable income. Further, if we fail to distribute during each calendar year at least the sum of (a) 85% of our ordinary income for such year, (b) 95% of our net capital gain income for such year, and (c) any undistributed taxable income from prior periods, we will be subject to a 4% excise tax on the excess of the required distribution over the sum of (i) the amounts actually distributed by us, plus (ii) retained amounts on which we pay income tax at the corporate level. If we realize net income from foreclosure properties that we hold primarily for sale to customers in the ordinary course of business, we must pay tax thereon at the highest corporate income tax rate, and if we sell a property, other than foreclosure property, that we are determined to have held for sale to customers in the ordinary course of business, any gain realized would be subject to a 100% “prohibited transaction” tax. The determination as to whether or not a particular sale is a prohibited transaction depends on the facts and circumstances related to that sale. We cannot guarantee that sales of our properties would not be prohibited transactions unless we comply with certain safe-harbor provisions. The need to avoid prohibited transactions could cause us to forgo or defer sales of properties that might otherwise be in our best interest to sell. In addition, we own interests in certain taxable REIT subsidiaries that are subject to federal income taxation and we and our subsidiaries may be subject to state and local taxes on our income or property.

We intend to make distributions to our stockholders to comply with the requirements of the Code for REITs and to minimize or eliminate our corporate tax obligations; however, differences between the recognition of taxable income and the actual receipt of cash could require us to sell assets or borrow funds on a short-term or long-term basis to meet the distribution requirements of the Code. Certain types of assets generate substantial disparity between taxable income and available cash, such as real estate that has been financed through financing structures which require some or all of available cash flows to be used to service borrowings. In addition, changes made by H.R. 1 will require us to accrue certain income for U.S. federal income tax purposes no later than when such income is taken into account as revenue on our financial statement (subject to an exception for certain income that is already subject to a special method of accounting under the Code). This could cause us to recognize taxable income prior to the receipt of the associated cash. H.R. 1 also includes limitations on the deductibility of certain compensation

paid to our executives, certain interest payments, and certain net operating loss carryforwards, each of which could potentially increase our taxable income and our required distributions. However, underUnder H.R. 1, as modified by the CARES Act, federal net operating losses incurred in taxable years beginning after December 31, 2017 can be carried forward indefinitely. Net operating

The maximum federal income tax rate for certain dividends paid by domestic corporations to individuals, trusts and estates is generally 20%. Dividends paid by REITs, however, (other than distributions we properly designate as capital gain dividends or as qualified dividend income) are taxed at the normal income tax rate applicable to the individual recipient (currently a maximum rate of 37%) rather than the 20% preferential rate, subject to a deduction equal to 20% of the amount of certain “qualified REIT dividends” that is available to noncorporate taxpayers through 2025, which has the effect of reducing the maximum effective income tax rate on qualified REIT dividends to 29.6%. The more favorable rates applicable to regular corporate dividends could cause investors who are individuals to perceive investments in REITs to be relatively less attractive than investments in non-REIT corporations that make distributions, particularly after the scheduled expiration of the 20% deduction applicable to qualified REIT dividends on December 31, 2025.

The IRS could recharacterize transactions consummated by our operating partnership, which could result in the income realized on certain transactions being treated as gain realized from the sale of property that is held as inventory or otherwise held primarily for the sale to customers in the ordinary course of business. In such event, the gain would constitute income from a prohibited transaction and would be subject to a 100% tax. If this were to occur, our ability to make cash distributions to our stockholders would be adversely affected. Moreover, our operating partnership may purchase properties and lease them back to the sellers of such properties. While we will use our best efforts to structure any such sale-leaseback transaction such that the lease will be characterized as a “true lease,” thereby allowing us to be treated as the owner of the property for federal income tax purposes, we can give stockholders no assurance that the IRS will not attempt to challenge such characterization. In the event that any such sale-leaseback transaction is challenged and recharacterized as a financing transaction or loan for U.S. federal income tax purposes, deductions for depreciation and cost recovery relating to such property would be disallowed. If a sale-leaseback transaction were so recharacterized, the amount of our adjusted REIT taxable income could be recalculated, which might cause us to fail to meet the distribution requirement for a taxable year. We also might fail to satisfy the REIT qualification asset tests or income tests and, consequently, lose our REIT status. Even if we maintain our status as a REIT, an increase in our adjusted REIT taxable income could cause us to be subject to additional federal and state income and excise taxes. Any federal or state taxes we pay will reduce our cash available for distribution to our stockholders.

From time to time, changes in state and local tax laws or regulations are enacted, including changes to a state’s treatment of REITs and their stockholders, which may result in an increase in our tax liability. Any shortfall in tax revenues for states and municipalities may lead to an increase in the frequency and size of such changes. If such changes occur, we may be required to pay additional taxes on our assets or income. These increased tax costs could adversely affect our financial condition and results of operations and the amount of cash available for payment of dividends.distributions to our stockholders.

Real property owned by us will be subject to real property taxes and, in some instances, personal property taxes or franchise taxes. Such real and personal property taxes and franchise taxes may increase as property tax or franchise tax rates change and

as the properties are assessed or reassessed by taxing authorities. An increase in property taxes on or franchise taxes related to our real property could affect adversely our financial condition, results of operations, cash flow and ability to make distributions to stockholders and could decrease the value of that real property.

As of December 31, 2020,2021, we had total outstanding indebtedness of approximately $1.6$1.9 billion and a total debt to gross assets ratio of 34.4%37.1%. Although the instruments governing our unsecured and secured indebtedness limit our ability to incur additional indebtedness, these restrictions are subject to a number of qualifications and exceptions and, under certain circumstances, debt incurred in compliance with these restrictions could be substantial. We may incur additional indebtedness to acquire properties or other real estate-related investments, to fund property improvements, and other capital expenditures or for other corporate purposes, such as to repurchase shares of our common stock through repurchase programs that our board of directors have authorized or to fund future distributions to our stockholders.

Significant borrowings by us increase the risks of an investment in us. Our ability to make payments on our indebtedness and to fund our operations, working capital and capital expenditures, depends on our ability to generate cash in the future. Our cash flow is subject to general economic, industry, financial, competitive, operating, legislative, regulatory and other factors, many of which are beyond our control. Our failure to pay amounts due with respect to any of our indebtedness may constitute an event of default under the instrument governing that indebtedness, which could permit the holders of that indebtedness to require the immediate repayment of that indebtedness in full and, in the case of secured indebtedness, could allow them to sell the collateral securing that indebtedness and use the proceeds to repay that indebtedness. For example, defaults on indebtedness secured by a property may result in lenders initiating foreclosure actions. Although no such instances exist as of December 31, 2020, if we were to default on our indebtedness, we could lose the property securing the loan that is in default. For tax purposes, a foreclosure of any of our properties would be treated as a sale of the property for a purchase price equal to the outstanding balance of the debt secured by the mortgage. If the outstanding balance of the debt secured by the mortgage exceeds our tax basis in the property, we would recognize taxable income on foreclosure, but we would not receive any cash proceeds.

In the future, we may need to refinance all or a portion of our indebtedness on or before maturity. Our ability to refinance our indebtedness or obtain additional financing will depend on, among other things our financial condition, results of operations and market conditions at the time; and restrictions in the agreements governing our indebtedness. As a result, we may not be able to refinance our indebtedness on commercially reasonable terms, or at all. If we do not generate sufficient cash flow from operations, and additional borrowings or refinancings or proceeds of assets sales or other sources of cash are not available to us, we may not have sufficient cash to enable us to meet all of our obligations. Accordingly, if we cannot service our indebtedness, we may have to take actions such as seeking additional equity financing, delaying capital expenditures or strategic acquisitions and alliances. Any of these events or circumstances could have a material adverse effect on our financial condition, results of operations, cash flows, the trading price of our securities and our ability to satisfy our debt service obligations.

If debt financing is unavailable at reasonable rates, we may not be able to finance the purchase of properties. If we place mortgage debt on properties, we run the risk of being unable to refinance the properties when the loans become due, or of being unable to refinance on favorable terms. If interest rates are higher when we refinance our properties, our income could be reduced. We may be unable to refinance properties. If any of these events occur, our cash flow could be reduced. This, in turn, could reduce cash available for distribution to our stockholders and may hinder our ability to raise more capital by issuing more stock or by borrowing more money.

We are subject to certain restrictions pursuant to the restrictive covenants of our outstanding indebtedness, which may affect our distribution and operating policies and our ability to incur additional debt. Loan documents evidencing our existing

Currently, any outstanding draws on our $500 Million Unsecured 2018 Line of Credit and our variable-rate debt instruments which are not subject to hedging under interest rate swap agreements represent our exposure to interest rate changes. In addition, any outstanding draws under the $500 Million Unsecured 2018 Line of Credit are subject to LIBOR locks of various length. However, increases in interest rates could increase our interest costs associated with this variable rate debt to the extent our current locks expire and new balances are drawn under the facility. Such increases would reduce our cash flows and could impact our ability to pay dividendsmake distributions to our stockholders. In addition, if we are required to repay existing debt during periods of higher interest rates, we may need to sell one or more of our investments in order to repay the debt, which might not permit realization of the maximum return on such investments.

We have entered into various interest rate derivative agreements to effectively fix our exposure to interest rates under certain of our existing debt facilities. To the extent interest rates are higher than the fixed rate in the respective contract, we would realize cash savings as compared to other market participants. However, to the extent interest rates are below the fixed rate in the respective contract, we would make higher cash payments than other similar market participants, which would have an adverse effect on our cash flows as compared to other market participants.

Additionally, there is counterparty risk associated with entering into interest rate derivative contracts. Should market conditions lead to insolvency or make a merger necessary for one or more of our counterparties, or potential future counterparties, it is possible that the terms of our interest rate derivative contracts will not be honored in their current form with a replacement counterparty. The potential termination or renegotiation of the terms of the interest rate derivative contracts as a result of changing counterparties through insolvency or merger could result in an adverse impact on our results of operations and cash flows.

The credit ratings assigned to our unsecured debt securities could change based upon, among other things, our results of operations and financial condition. If any of the credit rating agencies that have rated our unsecured debt securities downgrades or lowers its credit rating, or if any credit rating agency indicates that it has placed any such rating on a so-called “watch list” for a possible downgrading or lowering or otherwise indicates that its outlook for that rating is negative, it could have a material adverse effect on our costs and availability of capital, which could in turn have a material adverse effect on our financial condition, results of operations, cash flows and our ability to satisfy our debt service obligations.

Distributions are authorized and determined by our board of directors in its sole discretion and depend upon a number of factors, including:

We expect to continue to pay quarterly distributions to our stockholders; however, we bear all expenses incurred by our operations, and our funds generated by operations, after deducting these expenses, may not be sufficient to cover desired levels of distributions to our stockholders. Any change in our distributiondividend policy could have a material adverse effect on the market price of our common stock.

The U.S. stock markets, including the NYSE on which our common stock is listed, have historically experienced significant price and volume fluctuations. The market price of our common stock may be highly volatile and could be subject to wide fluctuations and investors in our common stock may experience a decrease in the value of their shares, including decreases unrelated to our operating performance or prospects. If the market price of our common stock declines significantly, stockholders may be unable to resell their shares at or above their purchase price. We cannot assure stockholders that the market price of our common stock will not fluctuate or decline significantly in the future. Some of the factors that could negatively affect our stock price or result in fluctuations in the price or trading volume of our common stock include, but are not limited to, the following:

We may attempt to increase our capital resources by making additional offerings of debt or equity securities, including medium term notes, senior or subordinated notes and classes of preferred or common stock. Upon liquidation, holders of our debt securities and shares of preferred stock and lenders with respect to other borrowings will receive a distribution of our available assets prior to the holders of our common stock. Additional equity offerings may dilute the holdings of our existing stockholders or reduce the market price of our common stock or both. Because our decision to issue securities in any future offering will depend on market conditions and other factors beyond our control, we cannot predict or estimate the amount, timing or nature of our future offerings. Thus, our stockholders bear the risk of our future offerings reducing the market price of our common stock and diluting their proportionate ownership.

One of the factors that investors may consider in deciding whether to buy or sell our common stock is our dividend distribution rate as a percentage of our share price, relative to market interest rates. If market interest rates increase, prospective investors may desire a higher yield on our common stock or seek securities paying higher dividends or yields. It is likely that the public valuation of our common stock will be based primarily on our earnings and cash flows and not from the underlying appraised value of the properties themselves. As a result, interest rate fluctuations and capital market conditions can affect the market value of our common stock. For instance, if interest rates rise, it is possible that the market price of our common stock will decrease, because potential investors may require a higher dividend yield on our common stock as market rates on interest-bearing securities, such as bonds, rise.

The trading market for our common stock relies in part on the research and reports that industry or financial analysts publish about us or our business. We do not control these analysts. Furthermore, if one or more of the analysts who do cover us downgrades our shares or our industry, or the stock of any of our competitors, the price of our shares could decline. If one or more of these analysts ceases coverage of our company, we could lose attention in the market, which in turn could cause the price of our common stock to decline.

There were no unresolved SEC staff comments as of December 31, 2020.2021.

ALR related to our in-service portfolio was $536.8 million, or $36.81 per leased square foot, as of December 31, 2021 as compared with $515.1 million, or $36.12 per leased square foot, as of December 31, 2020 as compared with $496.2 million, or $33.91 per leased square foot, as of December 31, 2019.2020. These rental rates are presented before consideration of the fact that several of our largest tenants self-perform various aspects of their building management; therefore, we do not count those expenses in our gross rent calculations. If the costs of these functions are added to these leases, our average gross rent for our in-service portfolio as of December 31, 2020,2021, increases to $36.87approximately $37.54 per leased square foot.

The following table shows the geographic diversification of our in-service portfolio as of December 31, 2020:2021:

Piedmont is not subject to any material pending legal proceedings. However, we are subject to routine litigation arising in the ordinary course of owning and operating real estate assets. Our management expects that these ordinary routine legal proceedings will be covered by insurance and does not expect these legal proceedings to have a material adverse effect on our financial condition, results of operations, or liquidity. Additionally, management is not aware of any legal proceedings contemplated by governmental authorities.

Not applicable.

PART II

Our common stock is listed on the New York Stock Exchange under the symbol “PDM.” As of February 16, 2021,2022, there were 8,7248,175 common stockholders of record of our common stock.

Distributions

We intend to make distributions each taxable year equal to at least 90% of our REIT taxable income (not including a return of capital for federal income tax purposes). One of our primary goals is to pay regular quarterly distributions to our stockholders. The amount of distributions paid and the taxable portion thereof in prior periods are not necessarily indicative of amounts anticipated in future periods.

The amount of distributions to common stockholders is determined by our board of directors and is dependent upon a number of factors, including funds deemed available for distribution, based principally on our current and future projected operating cash flows reduced by capital requirements necessary to maintain our existing portfolio, our future capital needs, our future sources of liquidity, and the annual distribution requirements necessary to maintain our status as a REIT under the Code. Our board of directors declared a $0.21 dividend for each of the four quarters of 2020.2021.

The following graph compares the cumulative total return of Piedmont’s common stock with the FTSE NAREIT Equity Office Index, the FTSE NAREIT Equity REITs Index, and the S&P 500 Index for the period beginning on December 31, 20152016 through December 31, 2020.2021. The graph assumes a $100 investment in each of Piedmont and the three indices, and the reinvestment of any dividends.

The performance graph above is being furnished as part of this Annual Report solely in accordance with the requirement under Rule 14a-3(b)(9) to furnish Piedmont’s stockholders with such information and, therefore, is not deemed to be filed with the SEC or subject to the liabilities of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and should not be deemed to be incorporated by reference into any of our prior or subsequent filings under the Securities Act of 1933, as amended.

During the quarter ended December 31, 2020,2021, we repurchased and retired approximately 2.21.1 million shares of our common stock in the open market as part of our board-authorized stock repurchase plan as follows:

During 2020, all of our properties remained open and fully operational for tenants to utilize as they deemed appropriate. Given our low-leverage operating model of long-term leases totargeted toward creditworthy tenants, to date the COVID-19 pandemic has not materially impacted our financial condition, or results of operations, our overall liquidity position and outlook, or caused material impairments in our portfolio of operating properties. Our revenues increased year over year; several capital transactions were successfully completed;properties; however, the pandemic-related slowdown of leasing activity, particularly leasing of vacant space to new tenants, during 2020 and the first half of 2021 has moderated earnings growth and negatively impacted our Core Funds From Operations increased approximately 6% in 2020 compared to the prior year. In response to the COVID-19occupancy levels and rental rate growth. The pandemic we have completed stress testinghas had an ongoing impact on a few of our various financial covenants assuming decreases in rentalsmall, primarily retail, tenants and parking income as appropriatethe long-term repercussions on our tenant's operations, future leasing decisions, and determined that we still have significant capacity with respect to all our covenant ratios. During the fourth quarter of 2020, we collected approximately 99% of our billed contractual rents on a monthly basis.global economy remains unclear.

We intend to use cash on hand, cash flows generated from the operation of our properties, net proceeds from the disposition of select properties, and proceeds fromborrowings under our $500 Million Unsecured 2018 Line of Credit as our primary sources of immediate liquidity. During the fourth quarter of 2020, we sold our last three properties in New Jersey (consisting of 600 Corporate Drive and 200 and 400 Bridgewater Crossing, collectively the "New Jersey Portfolio"), and used a portion of the proceeds to purchase an asset in downtown Orlando, Florida. We have approximately $462$309 million of capacity on our $500 million line of credit available as of the date of this filing. When necessary, we may seek other new secured or unsecured borrowings from third party lenders or issue securities as additional sources of capital. The nature and timing of these additional sources of capital will be highly dependent on market conditions.

Our most consistent use of capital has historically been, and we believe will continue to be, to fund capital expenditures for our existing portfolio of properties. During the years ended December 31, 20202021 and 2019,2020, we incurred the following types of capital expenditures (in thousands):

"Capital expenditures for redevelopment/renovations" during the yearyears ended December 31, 2021 and 2020 primarily related to a redevelopment projectbuilding upgrades, primarily to upgradethe lobbies and the addition of tenant amenities at our 60 Broad Street building in New York City; our 200 and 222 South Orange buildingAvenue buildings in Orlando, Florida, as well as a redevelopment master plan project to upgrade common areas, amenities, and parking, atFlorida; our Galleria buildings in Atlanta, Georgia. Expenditures during the year ended December 31, 2019 primarily related to a redevelopment project to upgrade amenities atGeorgia; and our US Bancorp25 Burlington Mall Road building in Minneapolis, Minnesota, as well as a redevelopment project to upgrade common areas, amenities, and parking, at our Two Pierce Place building in Itasca, Illinois.Boston, Massachusetts.

"Other capital expenditures, including building and tenant improvements" include all other capital expenditures during the respective period and are typically comprised of tenant and building improvements necessary to lease, maintain, or provide enhancements, including energy efficient equipment to our existing portfolio of office properties, including tenant improvements totaling approximately $13.4 million for the 520,000 square foot, 20-year renewalproperties. We currently do not anticipate incurring any unusually large or material capital expenditures within any given year in order to meet recognized sustainable development standards, and expansion of the State of New York atachieve our 60 Broad Street building in New York City incurred during the year ended December 31, 2020.environmental impact goals.

Given that our operating model frequently results in leases for large blocks of space to credit-worthy tenants, our leasing success can result in capital outlays which vary from one reporting period to another based upon the specific leases executed. For example, for leases executed during the year ended December 31, 2020,2021, we committed to spend approximately $5.79$4.25 per square foot per year of lease term for tenant improvement allowances and lease commissions (net of expired lease commitments) as compared to $5.86$5.79 (net of expired lease commitments) for the year ended December 31, 2019.2020. As of December 31, 2020,2021, we had one individually significant unrecorded tenant allowance commitment outstanding of approximately $38.2$18.4 million related to the State of New York's lease at our 60 Broad Street building mentioned above.in New York.

In addition to the amounts that we have already committed to as a part of executed leases, we also anticipate continuing to incur similar market-based tenant improvement allowances and leasing commissions in conjunction with procuring future leases for our existing portfolio of properties. Both the timing and magnitude of expenditures related to future leasing activity can vary

due to a number of factors including beingand are highly dependent on the size of the leased square footage and the competitive market conditions at the time of lease negotiations of the particular office market within whichat the time a given lease is signed. For example, we anticipate negotiating the long-term renewal of a majority of the City of New York's 313,000 square foot lease at our 60 Broad Street building. Depending on the length of the lease term, we anticipate committing to spend significant capital for market-based tenant improvement allowances and leasing commissions associated with the renewal.being negotiated.

The amount and form of payment (cash or stock issuance) of future dividends to be paid to our stockholders will continue to be largely dependent upon (i) the amount of cash generated from our operating activities; (ii) our expectations of future cash flows; (iii) our determination of near-term cash needs for debt repayments, development projects, and selective acquisitions of new properties; (iv) the timing of significant expenditures for tenant improvements, leasing commissions, building redevelopment projects, and general property capital improvements; (v) long-term dividend payout ratios for comparable companies; (vi) our ability to continue to access additional sources of capital, including potential sales of our properties; and (vii) the amount required to be distributed to maintain our status as a REIT. With the fluctuating nature of cash flows and expenditures, we may periodically borrow funds on a short-term basis to cover timing differences in cash receipts and cash disbursements.

The following table sets forth selected data from our consolidated statements of incomeoperations for the years ended December 31, 20202021 and 2019,2020, respectively, as well as each balance as a percentage of total revenues for the years presented (dollars in millions):

Rental and tenant reimbursement revenue increaseddecreased approximately $8.0$5.3 million for the year ended December 31, 20202021 as compared to the same periodprior year, reflecting a full year of COVID impacts as compared to a partial year of impact in the prior year. The favorable variance2020. Additionally, a 1% decrease in portfolio occupancy was primarily due to capital transaction activity subsequent to January 1, 2019 and new leases commencing at higher overall rental rates. These increases were partially offset by accretive capital recycling activity during the establishment of receivable reservestwo years ended December 31, 2021, rental rate increases associated with recent leasing activity across the portfolio, and higher tenant reimbursements as a result of the COVID-19 pandemicexpiration of operating expense abatements on certain large leases during the year ended December 31, 2020, along with decreased portfolio occupancy.2021.

Property management fee revenue decreased approximately $0.5$0.4 million for the year ended December 31, 20202021 as compared to the same period in the prior year. The decrease was primarily dueSuch fees fluctuate from period to construction management fees received in the prior year from one of our former Independence Square properties, with such fees varying from period-to-periodperiod due to the variability of construction activity.activity as well as the termination or commencement of property management agreements we may enter into with the buyers of properties in our portfolio.

garage duringOther property related income decreased approximately $0.6 million for the fourth quarter of 2019,year ended December 31, 2021 as well ascompared to the prior year primarily due to lower transient parking utilization at our buildings during 2020 asreflecting a resultfull year of the COVID-19 pandemic. These decreases were partially offset by new parking revenue associated with acquisitions consummated subsequent to January 1, 2019.pandemic impact in 2021 versus a partial year for the year ended December 31, 2020.

Property operating costs increaseddecreased approximately $3.5$4.0 million for the year ended December 31, 20202021 as compared to the same period in the prior year. ThisThe variance was primarily due to capital transaction activity subsequent to January 1, 2019, and higher property tax expenselower operating costs, largely associated with lower real estate taxes in certain markets, partially offset by lower utility and janitorial costs as a result of reduced building utilization across our portfolio as a result of the pandemic, along with decreased portfolio occupancy.jurisdictions.

Depreciation expense increased approximately $4.6$10.0 million for the year ended December 31, 20202021 compared to the same period in the prior year. The increase was primarily due primarily to additional building and tenant improvements placed in service subsequent to January 1, 2019, partially offset by a decrease in depreciation associated with capital transaction activity subsequent to January 1, 2019.2020.

Amortization expense increaseddecreased approximately $16.6$7.3 million for the year ended December 31, 20202021 compared to the same period in the prior year. Approximately $23.2 million of the increase wasAmortization expense decreased primarily due to capital transaction activity completed subsequent to January 1, 2019. This increase was partially offset by certain lease intangible assets or other deferred costs at our existing properties becoming fully amortized as a result of the expiration of leases subsequent to January 1, 2019.2020.

General and administrative expenses decreasedincreased approximately $10.4$2.8 million for the year ended December 31, 20202021 as compared to the same period in the prior year ended December 31, 2020, with the current periodyear ended December 31, 2021 primarily reflecting decreasedincreased accruals for incentive and stockpotential performance based compensation and the prior period reflecting certain one-time expenses associated with the senior management transition that took place on June 30, 2019, resulting in lower compensation at the executive level in the current period.equity compensation.

Interest expense decreased approximately $6.6$3.7 million for the year ended December 31, 20202021 as compared to the same period in the prior year primarily as a result of lower interest rates during the current year, as well as the repayment of thea $160 million mortgage debt in conjunction with ourthe sale of the 1901 Market Street building in June 2020. This variance was2020, as well as an increase in capitalized interest associated with various redevelopment projects during the year ended December 31, 2021. These decreases were partially offset by a decrease in capitalized interest inhigher average borrowings on our $500 Million Unsecured 2018 Line of Credit during the current year as compared to the prior year ended December 31, 2020, largely driven by the purchase of approximately $1.2 million.the 999 Peachtree Street building in Atlanta, Georgia during the fourth quarter of 2021.

The loss on extinguishment of debt for the year ended December 31, 2020 was associated with the early repayment of the $160 Million Fixed-Rate Loan which was collateralized by the 1901 Market Street building.building (see "Gain on sale of real estate assets" explanation below). The property was sold in June 2020. The loss was comprised of a prepayment penalty and the write-off of unamortized debt issuance costs and discounts associated with the loan.

Gain on sale of real estate assets during the year ended December 31, 2020 includes a gain of approximately $191.0 million recognized on the sale of the 1901 Market Street building in Philadelphia, Pennsylvania and a gain of approximately $14.6 million recognized on the sale of the New Jersey Portfolio. Gain on sale of real estate assets during the year ended December 31, 2019 includes approximately $33.2 million gain recognized on the sale of the One Independence Square building in Washington, D.C., an approximately $6.1 million adjustment of the gain on sale for the Two Independence Square building related to the reimbursement of certain previously disputed tenant improvement overages, and an approximately $157.7 million gain recognized on the sale of the 500 West Monroe Street building in Chicago, Illinois.

Please refer to "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations - Results of Operations (2019(2020 vs. 2018)2019)" in our Annual Report on Form 10-K for the year ended December 31, 2019,2020, as filed with the SEC on February 19, 2020,17, 2021, for a discussion of the results of operations for the year ended December 31, 20192020 as compared to the year ended December 31, 2018.2019.

The Notes are fully and unconditionally guaranteed by Piedmont Office Realty Trust, Inc. (the "Guarantor"), the parent entity that consolidates Piedmont OP and all other subsidiaries. By execution of the guarantee, the Guarantor guarantees to each holder of the Notes that the principal and interest on the Notes will be paid in full when due, whether at the maturity dates of the respective loans, or upon acceleration, upon redemption, or otherwise, andotherwise; interest on overdue principal and interest on any overdue interest, if any, on the Notes will also be paid in full when due; and all other obligations of the Issuer to the holders of the Notes will be promptly paid in full. The Guarantor's guarantee of the Notes is its senior unsecured obligation and ranks equally in right of payment with all of the Guarantor's other existing and future senior unsecured indebtedness and guarantees. The Guarantor’s guarantee of the notesNotes is effectively subordinated in right of payment to all existing andany future mortgage indebtedness andor other secured indebtedness andor secured guarantees of the Guarantor (to the extent of the value of the collateral securing such indebtedness and guarantees); and all existing and future indebtedness and other liabilities, whether secured or unsecured, of the Guarantor’s subsidiaries.

In the event of the bankruptcy, liquidation, reorganization or other winding up of Piedmont OP or the Guarantor, assets that secure any of their respective secured indebtedness and other secured obligations will be available to pay their respective obligations under the Notes or the guarantee, as applicable, and their other respective unsecured indebtedness and other unsecured obligations only after all of their respective indebtedness and other obligations secured by those assets have been repaid in full.

The non-Guarantors are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay any amounts due pursuant to the Notes, or to make any funds available therefore, whether by dividends, loans, distributions or other payments.