Ventas, Inc. (together with its consolidated subsidiaries, unless otherwise indicated or except where the context otherwise requires, “we,” “us,” “our,” “Company” and other similar terms), an S&P 500 company, is a real estate investment trust (“REIT”) operating at the intersection of healthcare and real estate. We hold a highly diversified portfolio of senior housing communities, medical office buildings (“MOBs”), life science, research and innovation centers, hospitals and other healthcare facilities, which we generally refer to as “healthcare real estate,” located throughout the United States, Canada and the United Kingdom. As of March 31,June 30, 2022, we owned or had investments in approximately 1,300 properties (including properties classified as held for sale). Our company was originally founded in 1983 and is headquartered in Chicago, Illinois with additional corporate offices in Louisville, Kentucky and New York, New York.

We primarily invest in a diversified portfolio of healthcare real estate assets through wholly owned subsidiaries and other co-investment entities. We operate through 3 reportable business segments: triple-net leased properties, senior living operations,housing operating portfolio, which we also refer to as SHOP,“SHOP” and is formerly known as senior living operations, and office operations. See “Note 2 – Accounting Policies” and “Note 16 – Segment Information.” Our senior housing communities are either subject to triple-net leases, in which case they are included in our triple-net leased properties reportable business segment, or operated by independent third-party managers, in which case they are included in our senior living operationsSHOP reportable business segment.

As of March 31,June 30, 2022, we leased a total of 332331 properties (excluding properties within our office operations reportable business segment) to various healthcare operating companies under triple-net or absolute-net leases that obligate the tenants to pay all property-related expenses, including maintenance, utilities, repairs, taxes, insurance and capital expenditures. Our 3 largest tenants, Brookdale Senior Living Inc. (together with its subsidiaries, “Brookdale Senior Living”), Ardent Health Partners, LLC (together with its subsidiaries, “Ardent”) and Kindred Healthcare, LLC (together with its subsidiaries, “Kindred”) leased from us 121 properties, 30 properties and 29 properties, respectively, as of March 31,June 30, 2022.

As of March 31,June 30, 2022, pursuant to long-term management agreements, we engaged independent operators, such as Atria Senior Living, Inc. (together with its subsidiaries, including Holiday Retirement (“Holiday”), “Atria”) and Sunrise Senior Living, LLC (together with its subsidiaries, “Sunrise”), to manage 555557 senior housing communities for us.

Through our Lillibridge Healthcare Services, Inc. subsidiary and our ownership interest in PMB Real Estate Services LLC, we also provide MOB management, leasing, marketing, facility development and advisory services to highly rated hospitals and health systems throughout the United States. In addition, from time to time, we make secured and non-mortgage loans and other investments relating to senior housing and healthcare operators or properties.

During the threesix months ended March 31,June 30, 2022 and 2021, we received $34.0 million and $13.6 million, respectively, in grants in connection with our applications and recognized these grants within property-level operating expenses in our Consolidated Statements of Income in the period in which they were received. In July 2022, we received $20.2 million in HHS grants.

The accompanying Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information set forth in the Accounting Standards Codification (“ASC”), as published by the Financial Accounting Standards Board (“FASB”), and with the Securities and Exchange Commission (“SEC”) instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of results for the interim period have been included. Operating results for the three and six months ended March 31,June 30, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. The accompanying Consolidated Financial Statements and related notes should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2021 (the “2021 Annual Report”). Certain prior period amounts have been reclassified to conform to the current period presentation.

The accompanying Consolidated Financial Statements include our accounts and the accounts of our wholly owned subsidiaries and the joint venture entities over which we exercise control. All intercompany transactions and balances have been eliminated in consolidation, and our net earnings are reduced by the portion of net earnings attributable to noncontrolling interests.

GAAP requires us to identify entities for which control is achieved through means other than voting rights and to determine which business enterprise is the primary beneficiary of variable interest entities (“VIEs”). A VIE is broadly defined as an entity with one or more of the following characteristics: (a) the total equity investment at risk is insufficient to finance the entity’s activities without additional subordinated financial support; (b) as a group, the holders of the equity investment at risk lack (i) the ability to make decisions about the entity’s activities through voting or similar rights, (ii) the obligation to absorb the expected losses of the entity, or (iii) the right to receive the expected residual returns of the entity; and (c) the equity investors have voting rights that are not proportional to their economic interests, and substantially all of the entity’s activities either involve, or are conducted on behalf of, an investor that has disproportionately few voting rights. We consolidate our investment in a VIE when we determine that we are its primary beneficiary. We may change our original assessment of a VIE upon subsequent events such as the modification of contractual arrangements that affects the characteristics or adequacy of the entity’s equity investments at risk and the disposition of all or a portion of an interest held by the primary beneficiary.

We identify the primary beneficiary of a VIE as the enterprise that has both: (i) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance; and (ii) the obligation to absorb losses or the right to receive benefits of the VIE that could be significant to the entity. We perform this analysis on an ongoing basis.

As it relates to investments in joint ventures, GAAP may preclude consolidation by the sole general partner in certain circumstances based on the type of rights held by the limited partner or partners. We assess limited partners’ rights and their impact on our consolidation conclusions, and we reassess if there is a change to the terms or in the exercisability of the rights of the limited partners, the sole general partner increases or decreases its ownership of limited partnership (“LP”) interests or there is an increase or decrease in the number of outstanding LP interests. We also apply this guidance to managing member interests in limited liability companies (“LLCs”).

We consolidate several VIEs that share the following common characteristics:

We have separately identified certain special purpose entities that were established to allow investments in life science, research and innovation projects by tax credit investors (“TCIs”). We have determined that these special purpose entities are VIEs, we are a holder of variable interests and we are the primary beneficiary of the VIEs, and therefore, we consolidate these special purpose entities. Our primary beneficiary determination is based upon several factors, including but not limited to the rights we have in directing the activities which most significantly impact the VIEs’ economic performance as well as certain guarantees which protect the TCIs from losses should a tax credit recapture event occur.

In general, the assets of consolidated VIEs are available only for the settlement of the obligations of the respective entities. Unless otherwise required by the LP or LLC agreement, any mortgage loans of the consolidated VIEs are non-recourse to us. The table below summarizes the total assets and liabilities of our consolidated VIEs as reported on our Consolidated Balance Sheets (dollars in thousands):

We report investments in unconsolidated entities over whose operating and financial policies we have the ability to exercise significant influence under the equity method of accounting. We adjust our investment in unconsolidated entities for additional contributions made, distributions received as well as our share of the investee’s earnings or losses, which is included in loss from unconsolidated entities in our Consolidated Statements of Income.

We base the initial carrying value of investments in unconsolidated entities on the fair value of the assets at the time we acquired the joint venture interest. We estimate fair values for our equity method investments based on discounted cash flow models that include all estimated cash inflows and outflows over a specified holding period and, where applicable, any estimated debt premiums or discounts. The capitalization rates, discount rates and credit spreads we use in these models are based upon assumptions that we believe to be within a reasonable range of current market rates for the respective investments.

We generally amortize any difference between our cost basis and the basis reflected at the joint venture level, if any, over the lives of the related assets and liabilities and include that amortization in our share of income or loss from unconsolidated entities. For earnings of equity method investments with pro rata distribution allocations, net income or loss is allocated between the partners in the joint venture based on their respective stated ownership percentages. In other instances, net income or loss may be allocated between the partners in the joint venture based on the hypothetical liquidation at book value method (the “HLBV method”). Under the HLBV method, net income or loss is allocated between the partners based on the difference between each partner’s claim on the net assets of the joint venture at the end and beginning of the period, after taking into account contributions and distributions. Each partner’s share of the net assets of the joint venture is calculated as the amount that the partner would receive if the joint venture were to liquidate all of its assets at net book value and distribute the resulting cash to creditors and partners in accordance with their respective priorities. Under the HLBV method, in any given period, we could record more or less income than the joint venture has generated, than actual cash distributions we receive or than the amount we may receive in the event of an actual liquidation.

We own a majority interest in NHP/PMB L.P. (“NHP/PMB”), a limited partnership formed in 2008 to acquire properties from entities affiliated with Pacific Medical Buildings LLC (“PMB”). Given our wholly owned subsidiary is the general partner and the primary beneficiary of NHP/PMB, we consolidate NHP/PMB as a VIE. As of March 31,June 30, 2022, third party investors owned 3.9 million Class A limited partnership units in NHP/PMB (“OP Units”), which represented 34% of the total units then outstanding, and we owned 7.5 million Class B limited partnership units in NHP/PMB, representing the remaining 66%. The OP Units may be redeemed at any time at the election of the holder for cash or, at our option, 0.9051 shares of our common stock per OP Unit, subject to adjustment in certain circumstances. We are party by assumption to a registration rights agreement with the holders of the OP Units that requires us, subject to the terms and conditions and certain exceptions set forth therein, to file and maintain a registration statement relating to the issuance of shares of our common stock upon redemption of OP Units.

The OP Units are classified outside of permanent equity on our Consolidated Balance Sheets because they may be redeemed by third parties under circumstances that are outside of our control. We reflect the OP Units at the greater of cost or redemption value. As of March 31,June 30, 2022 and December 31, 2021, the fair value of the OP Units was $217.2$182.5 million and $182.1 million, respectively. We recognize changes in fair value through capital in excess of par value, net of cash distributions paid and purchases by us of any OP Units. Our diluted earnings per share includes the effect of any potential shares outstanding from redemption of the OP Units.

Certain noncontrolling interests of other consolidated joint ventures were also classified as redeemable at March 31,June 30, 2022 and December 31, 2021. We record the carrying amount of these noncontrolling interests at the greater of their initial carrying amount (increased or decreased for the noncontrolling interests’ share of net income or loss and distributions) or the redemption value, which is primarily based on the fair value of the underlying real estate asset. Our joint venture partners have certain redemption rights with respect to their noncontrolling interests in these joint ventures that are outside of our control, and the redeemable noncontrolling interests are classified outside of permanent equity on our Consolidated Balance Sheets. We recognize changes in the carrying value of redeemable noncontrolling interests through capital in excess of par value on our Consolidated Balance Sheets.

Excluding the redeemable noncontrolling interests described above, we present the portion of any equity that we do not own in entities that we control (and thus consolidate) as noncontrolling interests and classify those interests as a component of consolidated equity, separate from total Ventas stockholders’ equity, on our Consolidated Balance Sheets. For consolidated joint ventures with pro rata distribution allocations, net income or loss, and comprehensive income, is allocated between the joint venture partners based on their respective stated ownership percentages. In other cases, net income or loss is allocated between the joint venture partners based on the HLBV method. We account for purchases or sales of equity interests that do not result in a change of control as equity transactions, through capital in excess of par value. We include net income attributable to the noncontrolling interests in net income in our Consolidated Statements of Income and we include the noncontrolling interests’ share of comprehensive income in our Consolidated Statements of Comprehensive Income.

For certain of our life science, research and innovation centers, we are party to contractual arrangements with TCIs that were established to enable the TCIs to receive benefits of historic tax credits (“HTCs”), new markets tax credits (“NMTCs”) or both. As of March 31,June 30, 2022, we owned 6 properties that had syndicated HTCs or NMTCs, or both, to TCIs.

In general, TCIs invest cash into special purpose entities that invest in entities that own the subject property and generate the tax credits. The TCIs receive substantially all of the tax credits and hold only a nominal interest in the economic risk and benefits of the special purpose entities.

HTCs are delivered to the TCIs upon substantial completion of the project. NMTCs are allowed for up to 39% of a qualified investment and are delivered to the TCIs after the investment has been funded and spent on a qualified business. HTCs are subject to recapture within five years of substantial completion. The amount of the recapture is equal to 100% of the HTCs during the first year after the completion of the historic rehabilitation and is reduced by 20% each year during the subsequent five year period. NMTCs are subject to recapture until the end of the seventh year following the qualifying investment. We have provided the TCIs with certain guarantees which protect the TCIs from losses should a tax credit recapture

The portion of the TCI’s investment that is attributed to the put is recorded at fair value at inception in accounts payable and other liabilities on our Consolidated Balance Sheets, and is accreted to the expected put price as interest expense in our Consolidated Statements of Income over the recapture period. The remaining balance of the TCI’s investment is initially recorded in accounts payable and other liabilities on our Consolidated Balance Sheets and will be relieved upon delivery of the tax credit to the TCI, as a reduction in the carrying value of the subject property, net of allocated expenses. Direct and incremental costs incurred in structuring the transaction are deferred and will be recognized as an increase in the cost basis of the subject property upon the recognition of the related tax credit as discussed above.

When we acquire real estate, we first make reasonable judgments about whether the transaction involves an asset or a business. Our real estate acquisitions are generally accounted for as asset acquisitions as substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or group of similar identifiable assets. Regardless of whether an acquisition is considered a business combination or an asset acquisition, we record the cost of the businesses or assets acquired as tangible and intangible assets and liabilities based upon their estimated fair values as of the acquisition date.

We estimate the fair value of buildings acquired on an as-if-vacant basis or replacement cost basis and depreciate the building value over the estimated remaining life of the building, generally not to exceed 35 years. We determine the fair value of other fixed assets, such as site improvements and furniture, fixtures and equipment, based upon the replacement cost and depreciate such value over the assets’ estimated remaining useful lives as determined at the applicable acquisition date. We determine the value of land either by considering the sales prices of similar properties in recent transactions or based on internal analyses of recently acquired and existing comparable properties within our portfolio. We generally determine the value of construction in progress based upon the replacement cost. However, for certain acquired properties that are part of a ground-up development, we determine fair value by using the same valuation approach as for all other properties and deducting the estimated cost to complete the development. During the remaining construction period, we capitalize project costs until the development has reached substantial completion. Construction in progress, including capitalized interest, is not depreciated until the development has reached substantial completion.

Intangibles primarily include the value of in-place leases and acquired lease contracts. We include all lease-related intangible assets and liabilities within acquired lease intangibles and accounts payable and other liabilities, respectively, on our Consolidated Balance Sheets.

The fair value of acquired lease-related intangibles, if any, reflects: (i) the estimated value of any above or below market leases, determined by discounting the difference between the estimated market rent and in-place lease rent; and (ii) the estimated value of in-place leases related to the cost to obtain tenants, including leasing commissions, and an estimated value of the absorption period to reflect the value of the rent and recovery costs foregone during a reasonable lease-up period as if the acquired space was vacant. We amortize any acquired lease-related intangibles to revenue or amortization expense over the remaining life of the associated lease plus any assumed bargain renewal periods. If a lease is terminated prior to its stated expiration or not renewed upon expiration, we recognize all unamortized amounts of lease-related intangibles associated with that lease in operations over the shortened lease term.

We estimate the fair value of purchase option intangible assets and liabilities, if any, by discounting the difference between the applicable property’s acquisition date fair value and an estimate of its future option price. We do not amortize the resulting intangible asset or liability over the term of the lease, but rather adjust the recognized value of the asset or liability upon sale.

In connection with an acquisition, we may assume rights and obligations under certain lease agreements pursuant to which we become the lessee of a given property. We generally assume the lease classification previously determined by the prior lessee absent a modification in the assumed lease agreement. We assess assumed operating leases, including ground leases, to determine whether the lease terms are favorable or unfavorable to us given current market conditions on the acquisition date. To the extent the lease terms are favorable or unfavorable to us relative to market conditions on the acquisition date, we recognize an intangible asset or liability at fair value and amortize that asset or liability to interest or rental expense in

We estimate the fair value of noncontrolling interests assumed consistent with the manner in which we value all of the underlying assets and liabilities.

We calculate the fair value of long-term assumed debt by discounting the remaining contractual cash flows on each instrument at the current market rate for those borrowings, which we approximate based on the rate at which we would expect to incur a replacement instrument on the date of acquisition, and recognize any fair value adjustments related to long-term debt as effective yield adjustments over the remaining term of the instrument.

Fair value is a market-based measurement, not an entity-specific measurement, and we determine fair value based on the assumptions that we expect market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, GAAP establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within levels one and two of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within level three of the hierarchy).

Level one inputs utilize unadjusted quoted prices for identical assets or liabilities in active markets that we have the ability to access. Level two inputs are inputs other than quoted prices included in level one that are directly or indirectly observable for the asset or liability. Level two inputs may include quoted prices for similar assets and liabilities in active markets and other inputs for the asset or liability that are observable at commonly quoted intervals, such as interest rates, foreign exchange rates and yield curves. Level three inputs are unobservable inputs for the asset or liability, which typically are based on our own assumptions, because there is little, if any, related market activity. If the determination of the fair value measurement is based on inputs from different levels of the hierarchy, the level within which the entire fair value measurement falls is the lowest level input that is significant to the fair value measurement in its entirety. If the volume and level of market activity for an asset or liability has decreased significantly relative to the normal market activity for such asset or liability (or similar assets or liabilities), then transactions or quoted prices may not accurately reflect fair value. In addition, if there is evidence that a transaction for an asset or liability is not orderly, little, if any, weight is placed on that transaction price as an indicator of fair value. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.

We use the following methods and assumptions in estimating the fair value of our financial instruments whose fair value is determined on a recurring basis.

We periodically evaluate our long-lived assets, primarily consisting of investments in real estate, for impairment indicators. If indicators of impairment are present, we evaluate the carrying value of the related real estate investments in relation to the future undiscounted cash flows of the underlying operations. In performing this evaluation, we consider market conditions and our current intentions with respect to holding or disposing of the asset. We adjust the net book value of properties and other long-lived assets to fair value if the sum of the expected future undiscounted cash flows, including sales proceeds, is less than book value. We recognize an impairment loss at the time we make any such determination.

If impairment indicators arise with respect to intangible assets with finite useful lives, we evaluate impairment by comparing the carrying amount of the asset to the estimated future undiscounted net cash flows expected to be generated by the asset. If estimated future undiscounted net cash flows are less than the carrying amount of the asset, then we estimate the fair value of the asset and compare the estimated fair value to the intangible asset’s carrying value. We recognize any shortfall from carrying value as an impairment loss in the current period.

We evaluate our investments in unconsolidated entities for impairment at least annually, and whenever events or changes in circumstances indicate that the carrying value of our investment may exceed its fair value. If we determine that a decline in the fair value of our investment in an unconsolidated entity is other-than-temporary, and if such reduced fair value is below the carrying value, we record an impairment.

We test goodwill for impairment at least annually, and more frequently if indicators of impairment arise. We first assess qualitative factors, such as current macroeconomic conditions, state of the equity and capital markets and our overall financial and operating performance, to determine the likelihood that the fair value of a reporting unit is less than its carrying amount. If we determine it is more likely than not that the fair value of a reporting unit is less than its carrying amount, we proceed with estimating the fair value of the reporting unit. A goodwill impairment, if any, will be recognized in the period it is determined and is measured as the amount by which a reporting unit’s carrying value exceeds its fair value.

Estimates of fair value used in our evaluation of goodwill (if necessary, based on our qualitative assessment), investments in real estate, investments in unconsolidated entities and intangible assets are based upon discounted future cash flow projections or other acceptable valuation techniques that are based, in turn, upon all available evidence including level three inputs, such as revenue and expense growth rates, estimates of future cash flows, capitalization rates, discount rates, general economic conditions and trends, or other available market data such as replacement cost or comparable sales. Our ability to accurately predict future operating results and cash flows and to estimate and determine fair values impacts the timing and recognition of impairments. While we believe our assumptions are reasonable, changes in these assumptions may have a material impact on our financial results.

Certain of our triple-net leases and most of our MOB and life science, research and innovation centerscenters’ (collectively, “office operations”) leases provide for periodic and determinable increases in base rent. We recognize base rental revenues under these leases on a straight-line basis over the applicable lease term when collectability of substantially all rents is probable. Recognizing rental income on a straight-line basis generally results in recognized revenues during the first half of a lease term exceeding the cash amounts contractually due from our tenants, creating a straight-line rent receivable that is included in other assets on our Consolidated Balance Sheets. At March 31,June 30, 2022 and December 31, 2021, this cumulative excess totaled $180.0$181.7 million and $176.9 million, respectively (excluding properties classified as held for sale).

Certain of our leases provide for periodic increases in base rent only if certain revenue parameters or other substantive contingencies are met. We recognize the increased rental revenue under these leases as the related parameters or contingencies are met, rather than on a straight-line basis over the applicable lease term.

We assess the probability of collecting substantially all rents under our leases based on several factors, including, among other things, payment history, the financial strength of the tenant and any guarantors, the historical operations and operating trends of the property, the historical payment pattern of the tenant, the type of property, the value of the underlying collateral, if any, expected future performance of the property and current economic conditions. If our evaluation of these factors indicates it is not probable that we will be able to collect substantially all rents under the lease, we record a charge to rental income. If we change our conclusions regarding the probability of collecting rent payments required by a lease, we may recognize adjustments to rental income in the period we make such change in our conclusions.

Our resident agreements are accounted for as leases and we recognize resident fees and services, other than move-in fees, monthly as services are provided. We recognize move-in fees on a straight-line basis over the average resident stay.

We recognize interest income from loans and investments, including discounts and premiums, using the effective interest method when collectability is reasonably assured. We apply the effective interest method on a loan-by-loan basis and recognize discounts and premiums as yield adjustments over the related loan term. We evaluate collectability of accrued interest receivables separate from the amortized cost basis of our loans. As such, we recognize interest income on an impaired loan to the extent we believe accrued contractual interest payments are collectable. Otherwise interest income is recognized on a cash basis.

We evaluate a current estimate of all expected credit losses over the life of a financial instrument, which may result in recognition of credit losses on loans and other financial instruments before an actual event of default. We establish reserves for any estimated credit losses with a corresponding charge to allowance on loans receivable and investments in our Consolidated Statements of Income. Subsequent changes in our estimate of credit losses may result in a corresponding increase or decrease to allowance on loans receivable and investments in our Consolidated Statements of Income.

We lease real property, primarily land and corporate office space, and equipment, primarily vehicles at our senior housing communities. At lease inception, we establish an operating lease asset and operating lease liability calculated as the present value of future minimum lease payments on our Consolidated Balance Sheets. As our leases do not provide an implicit rate, we use a discount rate that approximates our incremental borrowing rate available at lease commencement to determine the present value. Our lease expense primarily consists of ground and corporate office leases. Ground lease expense is included in interest expense and corporate office lease expense is included in general, administrative and professional fees in our Consolidated Statements of Income.

As of March 31,June 30, 2022, Atria, Sunrise, Brookdale Senior Living, Ardent and Kindred managed or operated approximately 26.7%, 9.9%9.8%, 7.7%, 5.3% and 0.8%, respectively, of our consolidated real estate investments based on gross book value (excluding properties classified as held for sale as of March 31,June 30, 2022). Because Atria and Sunrise manage our properties in exchange for a management fee from us, we are not directly exposed to their credit risk in the same manner or to the same extent as triple-net tenants like Brookdale Senior Living, Ardent and Kindred.

Based on gross book value, approximately 12.8%12.7% and 54.2%53.9% of our consolidated real estate investments were senior housing communities included in the triple-net leased properties and senior living operationsSHOP reportable business segments, respectively (excluding properties classified as held for sale as of March 31,June 30, 2022). MOBs, life science, research and innovation centers, inpatient rehabilitation facilities (“IRFs”) and long-term acute care facilities (“LTACs”), health systems, skilled nursing facilities (“SNFs”) and secured loans receivable and investments collectively comprised the remaining 33.0%33.4%. Our consolidated properties were located in 47 states, the District of Columbia, 7 Canadian provinces and the United Kingdom as of March 31,June 30, 2022, with properties in 1 state (California) accounting for more than 10% of our total consolidated revenues and net operating income (“NOI”) for the three months then ended. NOI is defined as total revenues, less interest and other income, property-level operating expenses and office building and other services costs. See “Non-GAAP Financial Measures” included elsewhere in this Quarterly Report on Form 10-Q for additional disclosure and a reconciliation of net income attributable to common stockholders, as computed in accordance with GAAP, to NOI.

The properties we lease to Brookdale Senior Living, Ardent and Kindred accounted for a significant portion of our triple-net leased properties segment revenues and NOI for the three months ended March 31, 2022 and 2021.NOI. The following table reflects the concentration risk related to our triple-net leased properties including assets held for sale for the periods presented:

Each of our leases with Brookdale Senior Living, Ardent and Kindred is a triple-net lease that obligates the tenant to pay all property-related expenses, including maintenance, utilities, repairs, taxes, insurance and capital expenditures, and to comply with the terms of the mortgage financing documents, if any, affecting the properties. In addition, each of our Brookdale Senior Living, Ardent and Kindred leases has a corporate guaranty.

As of March 31,June 30, 2022, Atria and Sunrise, collectively, provided comprehensive property management and accounting services with respect to 347 of our 546548 consolidated senior housing communities, for which we pay annual management fees pursuant to long-term management agreements.

On July 30, 2021, Atria acquired the management services division of Holiday, which at the time managed a pool of 26 communities for Ventas. As of March 31,June 30, 2022, Atria and its subsidiaries, including Holiday, managed a pool of 255 senior housing communities for Ventas. Ventas has the ongoing right to terminate the management contract for 91 of the communities with short term notice.

As of March 31,June 30, 2022, Sunrise managed a pool of 96 senior housing communities for Ventas. Subsequent to March 31, 2022, Ventas and Sunrise Senior Living entered into a revised management agreement for 92 communities with a term expiring May 31, 2035. Under the new management agreement, Sunrise will receive a management fee based on a percentage of revenue and net operating income generated by the applicable communities. Sunrise is also entitled to certain incentive fees if specified performance targets are met. Ventas has the right to freely terminate the management agreement as to all communities if certain performance metrics are not met and may freely terminate the management agreement as to certain specified communities at any time. In addition, Ventas may also terminate the management agreement as it relates to three communities per year subject to the payment of a fee and an aggregate cap on such terminations over the term of the agreement.

We successfully transitioned the operations of 90 senior living communities owned by us and operated under management agreements with Eclipse Senior Living, Inc. (“ESL”) to seven experienced managers on or before January 2, 2022. ESL ceased operation of its management business in early 2022 following completion of the transitions. We incurred certain one-time transition costs and expenses in connection with the transitions, which were recognized within transaction expenses and deal costs in our Consolidated Statements of Income.

We rely on our managers’ personnel, expertise, technical resources and information systems, proprietary information, good faith and judgment to manage our senior living operationshousing operating portfolio efficiently and effectively. We also rely on our managers to set appropriate resident fees, provide accurate property-level financial results in a timely manner and otherwise operate our senior housing communities in compliance with the terms of our management agreements and all applicable laws and regulations.

We acquire and invest in senior housing, medical office buildings, life science, research and innovation centers and other healthcare properties primarily to achieve an expected yield on our investment, to grow and diversify our portfolio and revenue base, and to reduce our dependence on any single tenant, operator or manager, geographic location, asset type, business model or revenue source. Each of our acquisitions disclosed below was accounted for as an asset acquisition.

During the first quarter ofsix months ended June 30, 2022, we acquired 18 MOBs leased to affiliates of Ardent, and 1 behavioral health center and 1 research and innovation center, all of which are reported within our office operations segment, and 1 senior housing community, which is reported within our senior living operationsSHOP segment, for an aggregate purchase price of $349.2 million.