Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Use of Estimates—The preparation of financial statements, in accordance with GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and disclosure of contingent assets and liabilities. The estimates and assumptions used in the accompanying financial statements are based upon management’s evaluation of the relevant facts and circumstances as of the date of the financial statements. Actual results may differ from the estimates and assumptions used in preparing the accompanying financial statements, and such differences could be material. Liquidity—We anticipate continuing to invest in our network infrastructure across our Uniti Leasing and Uniti Fiber portfolios. We also anticipate declaring dividends for the 2024 tax year to comply with our REIT distribution requirements. We anticipate these expenditures will be met, as well as operating expenses (including our debt service obligations), in the near term from our cash on hand, borrowings under our Revolving Credit Facility and the new $350 million ABS Loan Facility we entered into in February 2024 and cash flows provided by operating activities. Our 2023 capital expenditures of $417.0 million and dividend payments of $107.4 million exceeded our 2023 cash flow from operating activities of $353.1 million, which led us to seek additional external sources of capital. We will closely monitor the equity and debt markets and may seek to access those markets when we deem conditions are appropriate. The amount, nature and timing of any capital markets transactions will depend on our operating performance, capital requirements, and the availability of those capital markets, all of which are subject to uncertainties. Property, Plant and Equipment—Property, plant and equipment is stated at original cost, net of accumulated depreciation. The Company capitalizes costs incurred in bringing property, plant and equipment to an operational state, including all activities directly associated with the acquisition, construction, and installation of the related assets it owns. The Company capitalizes a portion of the interest costs it incurs for assets that require a period of time to get them ready for their intended use. The amount of interest that is capitalized is based on the average accumulated expenditures made during the period involved in bringing the assets comprising a network to an operational state at the Company’s weighted average interest rate during the respective accounting period. The Company also enters into leasing arrangements providing for the long‑term use of constructed fiber that is then integrated into the Company’s network infrastructure. For each lease that qualifies as a finance lease, the present value of the lease payments, which may include both periodic lease payments over the term of the lease as well as upfront payments to the lessor, is capitalized at the inception of the lease and included in property and equipment. As of December 31, 2023 and 2022, the accumulated amortization of our finance lease assets was $20.4 million and $22.2 million, respectively. On April 24, 2015, we were separated and spun-off (the “Spin-Off”) from Windstream Holdings, Inc. (“Windstream Holdings” and together with Windstream Holdings II, LLC, its successor in interest, and its subsidiaries, “Windstream”) pursuant to which Windstream contributed certain telecommunications network assets, including fiber and copper networks and other real estate (the “Distribution Systems”) to Uniti. Certain property, plant and equipment acquired as part of our Spin-Off is depreciated using a group composite depreciation method. Under this method, when property is retired, the original cost, net of salvage value, is charged against accumulated depreciation and no immediate gain or loss is recognized on the disposition of the property. For all other property, which includes amortization of finance lease assets, depreciation is computed using the straight-line method over the estimated useful life of the respective property. When the property is retired or otherwise disposed of, the related cost and accumulated depreciation are written-off, with the corresponding gain or loss reflected in operating results. Construction in progress includes direct materials and labor related to fixed assets during the construction period. Depreciation begins once the construction period has ceased and the related asset is placed into service, and the asset will be depreciated over its useful life. Costs of maintenance and repairs to property, plant and equipment subject to triple-net leasing arrangements are the responsibility of our tenant. Costs of maintenance and repairs to property, plant and equipment not subject to triple-net leasing arrangements are expensed as incurred. Tenant Capital Improvements—The leases with Windstream (as discussed below) provide that tenant funded capital improvements (“TCIs”), defined as maintenance, repair, overbuild, upgrade or replacements to the leased network, including, without limitation, the replacement of copper distribution systems with fiber distribution systems, automatically become property of Uniti upon their construction by Windstream. We receive non-monetary consideration related to the TCIs as they automatically become our property, and we recognize the cost basis of TCIs that are capital in nature as property, plant and equipment and deferred revenue. We depreciate the property, plant and equipment over their estimated useful lives and amortize the deferred revenue as additional leasing revenues over the same depreciable life of the TCI assets. At December 31, 2023 and 2022, the net book value of TCIs recorded as a component of property, plant and equipment on our Consolidated Balance Sheets was $970.1 million and $884.4 million, respectively. For the years ended December 31, 2023, 2022 and 2021, we recognized $47.0 million, $43.2 million, and $39.0 million of revenue and depreciation expense related to TCIs, respectively. Impairment of Long-Lived Assets—We review long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset group may not be recoverable from future undiscounted net cash flows we expect the asset group to generate. If the asset group is not fully recoverable, an impairment loss would be recognized for the difference between the carrying value of the asset group and its estimated fair value based on discounted net future cash flows. Assets held for sale, if any, are reported at the lower of the carrying amount or fair value less cost to sell. Assets held for sale are no longer depreciated once held for sale criteria are met. During the years ended December 31, 2023, 2022 and 2021, there were no events or changes in circumstances indicating that the carrying amount of any of our assets groups was not recoverable from future undiscounted net cash flows we expect the asset groups to generate, and no impairment losses were recognized. Asset Retirement Obligations—The Company records obligations to perform asset retirement activities, primarily including requirements to remove equipment from leased space or customer sites as required under the terms of the related lease and customer agreements. The fair value of the liability for asset retirement obligations, which represents the net present value of the estimated expected future cash outlay, is recognized in the period in which it is incurred and the fair value of the liability can reasonably be estimated. The liability accretes as a result of the passage of time and related accretion expense is recognized in the Consolidated Statements of (Loss) Income. The associated asset retirement costs are capitalized as an additional carrying amount of the related long‑lived asset and depreciated on a straight-line basis over the asset’s useful life. As of December 31, 2023 and 2022, our aggregate carrying amount of asset retirement obligations totaled $16.8 million and $13.3 million, respectively. During the year ended December 31, 2023, we incurred $6.5 million in liabilities related to asset retirement obligations and in the year ended December 31, 2022, we incurred no liabilities related to asset retirement obligations. During the years ended December 31, 2023, 2022, and 2021, we recognized $2.8 million, $1.7 million, and $1.5 million of accretion expense related to asset retirement obligations, respectively, included in depreciation and amortization expense in our Consolidated Statements of (Loss) Income. Cash and Cash Equivalents—Cash and cash equivalents include all non-restricted cash held at financial institutions and other non-restricted highly liquid short-term investments with original maturities of three months or less. Derivative Instruments and Hedging Activities—We account for our derivatives in accordance with FASB ASC 815, Derivatives and Hedging ("ASC 815"), in which we reflect all derivative instruments at fair value as either assets or liabilities on our Consolidated Balance Sheets. For derivative instruments that are designated and qualify as hedging instruments, we record the effective portion of the gain or loss on the hedged instruments as a component of accumulated other comprehensive income or loss. Any ineffective portion of a derivative’s change in fair value is immediately recognized within net income. For derivatives that do not meet the criteria for hedge accounting, changes in fair value are immediately recognized within net income. Exchangeable Notes and Related Transactions—On June 28, 2019, Uniti Fiber Holdings Inc., a subsidiary of the Company, issued $345 million aggregate principal amount of 4.00% Exchangeable Senior Notes due June 15, 2024 (the “Exchangeable Notes”). The Exchangeable Notes bear interest at a fixed rate of 4.00% per year, payable semiannually in arrears on June 15 and December 15 of each year, beginning on December 15, 2019. The Exchangeable Notes are exchangeable into cash, shares of the Company’s common stock, or a combination thereof, at Uniti Fiber Holdings Inc.’s election. In accordance with ASC 470-20, Debt – Debt with Conversion and Other Options ("ASC 470"), because the conversion feature in the Exchangeable Notes is not bifurcated pursuant to ASC 815 and because the conversion can be settled in cash, shares, or a combination thereof, the Exchangeable Notes were separated into a liability component and an equity component in a manner that reflects Uniti Fiber Holdings Inc.’s non-convertible debt borrowing rate. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated conversion feature. See Note 13. The Company adopted ASU No. 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470- 20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity (“ASU 2020-06”) on January 1, 2021. ASU 2020-06 (1) simplifies the accounting for convertible debt instruments and convertible preferred stock by removing the existing guidance in ASC 470-20 that requires entities to account for beneficial conversion features and cash conversion features in equity, separately from the host convertible debt or preferred stock; (2) revises the scope exception from derivative accounting in ASC 815-40 for freestanding financial instruments and embedded features that are both indexed to the issuer’s own stock and classified in stockholders’ equity, by removing certain criteria required for equity classification; and (3) revises the guidance in ASC 260, Earnings Per Share, to require entities to calculate diluted earnings per share (“EPS”) for convertible instruments by using the if-converted method. In addition, entities must presume share settlement for purposes of calculating diluted EPS when an instrument may be settled in cash or shares. The adoption of ASU 2020-06 resulted in the re-combination of the liability and equity components of these notes into a single liability instrument. In connection with the offering of the Exchangeable Notes, Uniti Fiber Holdings Inc. entered into exchangeable note hedge transactions with respect to the Company’s common stock (the “Note Hedge Transactions”) with certain of the initial purchasers or their respective affiliates (collectively, the “Counterparties”). In addition, the Company entered into warrant transactions to sell to the Counterparties warrants (the “Warrants”) to acquire, subject to anti-dilution adjustments, up to approximately 27.8 million shares of the Company’s common stock in the aggregate at an exercise price of $16.42 per share. The warrant transactions may have a dilutive effect with respect to the Company’s common stock to the extent the market price per share of the Company’s common stock exceeds the strike price of the Warrants. While the Note Hedge Transactions and the Warrants each meet the definition of a derivative in ASC 815-10-15-83, they each meet the equity scope exception specified in ASC 815-10-15-74(a); as such, the Warrants and the Note Hedge Transactions are not accounted for as derivatives that must be remeasured each reporting period and instead, are recorded in stockholders’ deficit. See Note 13. On December 12, 2022, in connection with the issuance of the Convertible 2027 Notes (See Note 13), approximately $207.1 million aggregate principal amount of the Exchangeable Notes was repurchased for $194.0 million. Additionally, on March 21, 2023, the Company repurchased approximately $15.0 million of the Exchangeable Notes for total cash consideration of $13.7 million. On December 7, 2022, in connection with the Company’s repurchase of the Exchangeable Notes, the Company entered into partial unwind agreements (the “Unwind Agreements”) with the Counterparties to unwind a portion of the Note Hedge Transactions and the Warrants described above (collectively, the “Unwind Transactions”). In connection with the Unwind Transactions, the Company received cash as a termination payment for of the portion of the Note Hedge Transactions that were unwound, and the Company delivered cash as a termination payment in respect of the portion of the Warrants that were unwound. The amount of cash that was received, which was approximately $1.2 million, and the amount of cash that was delivered to the Counterparties, which was approximately $0.5 million, were based generally on the termination values of the unwound portions of such instruments. See N o t e 1 1 and Note 13. Intangible Assets—Intangible assets are presented in the financial statements at cost less accumulated amortization and are amortized using the straight-line method over their estimated useful lives. Transaction Related and Other Costs—The Company expenses non-capitalizable transaction related and other costs in the period in which they are incurred and services are received. Transaction related costs include acquisition pursuit, transaction and integration costs, including unsuccessful acquisition pursuit costs. Pursuit and transaction costs include professional services (legal, accounting, advisory, regulatory, etc.), finder’s fees, travel expenses, and other direct expenses associated with a business acquisition. Integration costs include direct costs necessary to integrate an acquired business, including professional services, systems and data conversion, severance and retention bonuses payable to employees of an acquired business. In addition, other costs, such as costs incurred as a result of Windstream’s bankruptcy filing, costs associated with Windstream’s claims against us (see Note 17), and costs associated with the implementation of our enterprise resource planning system are included within this line item on the Consolidated Statements of (Loss) Income. Settlement Payable—On July 25, 2019, in connection with Windstream’s bankruptcy, Windstream filed a complaint with the Bankruptcy Court against Uniti and certain of its affiliates, alleging, among other things, that the Master Lease (as defined in Note 5) should be recharacterized as a financing arrangement, that certain rent payments and TCIs made by Windstream under the Master Lease constitute constructive fraudulent transfers, that the Master Lease is a lease of personal property and that Uniti breached certain of its obligations under the Master Lease. On March 2, 2020, Uniti and Windstream jointly announced that they agreed to the Settlement (as defined below) to resolve any and all claims and causes of action that have been or may be asserted against Uniti by Windstream, including all litigation brought by Windstream and certain of its creditors in the context of Windstream’s bankruptcy, and on May 12, 2020, the Bankruptcy Court entered an order approving Windstream’s assumption of the Master Lease as part of the Settlement. In connection with Windstream’s emergence from bankruptcy on September 21, 2020, Uniti entered into several agreements and consummated several transactions, including a stock transaction closed on September 18, 2020 in which we issued 38,633,470 shares of Uniti common stock to certain first lien creditors of Windstream and transferred the proceeds to Windstream and an asset transaction closed on September 18, 2020, in which we paid to Windstream approximately $284.6 million in exchange for certain fiber assets and dark fiber dark fiber indefeasible rights of use related thereto, to implement its settlement (the “Settlement”) with Windstream pursuant to the settlement agreement dated as of May 12, 2020 between Uniti and Windstream. Pursuant to the Settlement, Uniti and Windstream agreed to mutual releases with respect to any and all liability related to any claims and causes of action between them, including those brought by Windstream and certain of its creditors relating to Windstream’s Chapter 11 proceedings and the Master Lease. On January 8, 2021, Windstream filed in the bankruptcy court a stipulation and order dismissing the adversary proceeding against Uniti with prejudice subject to the terms set forth in the settlement agreement. The stipulation and order was entered by the bankruptcy court on January 25, 2021. In accordance with the Settlement, we also have a number of ongoing obligations including the following: i.we are obligated to make $490.1 million of cash payments to Windstream in equal installments over 20 consecutive quarters beginning in October 2020, and we may prepay any installments due on or after the first anniversary of the settlement agreement (discounted at a 9% rate). As of December 31, 2023, the Company has made payments totaling $313.4 million; and ii.we are obligated to reimburse Windstream for Growth Capital Improvements as described in Note 5. Debt Issuance Costs—The Company recognizes debt issuance costs related to a recognized debt liability as a direct deduction from the carrying amount of the debt liability, consistent with debt discounts. The costs, which include underwriting, legal, and other direct costs related to the issuance of debt, are amortized over the contractual term of the debt using the effective interest method. Revenue Recognition— The following is a description of principal activities, separated by reportable segments (see Note 16), from which the Company generates its revenues. We exclude from the transaction price any amounts collected from customers for sales taxes and therefore, they are not included in revenue. Uniti Leasing Uniti Leasing revenue represents the results from our Uniti Leasing segment, which is engaged in the acquisition and construction of mission-critical communications assets and leasing them to anchor customers on either an exclusive or shared-tenant basis. See discussion in “Leases” in this Note 3 and Note 5. The Windstream Leases (as defined in Note 5) are long-term exclusive triple-net leases, whereby Windstream is responsible for the costs related to operating the Distribution Systems, including property taxes, insurance and maintenance and repair costs. As a result, we do not record an obligation related to the payment of property taxes or insurance, as Windstream makes direct payments to the taxing authorities and insurance carriers, respectively. Uniti Fiber The Uniti Fiber segment represents the operations of our fiber business, Uniti Fiber, which provides: i.Consumer, enterprise, wholesale, and backhaul lit fiber revenue is recognized over the life of the contracts in a pattern that reflects the satisfaction of Uniti’s stand-ready obligation to provide lit fiber services. The transaction price is equal to the monthly-recurring charge multiplied by the contract term, plus any non-recurring or variable charges. For each contract, the customer is invoiced monthly. ii.E-Rate contracts involve providing lit fiber services to schools and libraries, and revenue is recognized over the life of the contract in a pattern that reflects the satisfaction of Uniti’s stand-ready obligation to provide lit fiber services. The transaction price is equal to the monthly-recurring charge multiplied by the contract term, plus any non-recurring or variable charges. For each contract, the customer is invoiced monthly. iii.Construction revenue is generated from contracts to provide various construction services such as equipment installation or the laying of fiber. Construction revenue is recognized over time as construction activities occur as we are either enhancing a customer’s owned asset or constructing an asset with no alternative use to us and we would be entitled to our costs plus a reasonable profit margin if the contract was terminated early by the customer. We are utilizing our costs incurred as the measure of progress of satisfying our performance obligation. iv.Dark fiber and small cell arrangements represent operating leases and revenue is recognized under the leasing guidance. When (i) a customer makes an advance payment or (ii) a customer is contractually obligated to pay any amounts in advance, which is not deemed a separate performance obligation, deferred leasing revenue is recorded. This leasing revenue is recognized ratably over the expected term of the contract, unless the pattern of service suggests otherwise. v.The Company generates revenues from other services, such as consultation services and equipment sales. Revenue from the sale of customer premise equipment and modems that are not provided as an essential part of the telecommunications services, including broadband, long distance, and enhanced services is recognized when products are delivered to and accepted by the customer. Revenue from customer premise equipment and modems provided as an essential part of the telecommunications services, including broadband, long distance, and enhanced services are recognized over time in a pattern that reflects the satisfaction of the service performance obligation. Commissions – Under Topic 606 and Topic 340, Other Assets and Deferred Costs, we capitalize commission fees as costs of obtaining a contract when those commissions are incremental and expected to be recovered from the revenue contract and we amortize those capitalized costs consistent with the pattern of transfer of the product or service to which the capitalized costs relate. The amortization of these costs are included in general and administrative expense on the Consolidated Statements of (Loss) Income. We are exposed to credit losses primarily through our trade receivables. We assess ability to pay for certain customers by considering a variety of factors, such as the customer’s established credit rating, if available, and our assessment of creditworthiness. We determine the allowance for credit losses on accounts receivable using a combination of specific reserves for accounts that are deemed to exhibit credit loss indicators and general reserves that are determined using loss rates based on historical experience and economic expectations. We update our estimate of credit loss reserves quarterly, considering recent write-offs, collections information and underlying economic expectations. The allowance for credit losses is recorded in accounts receivable, net on our Consolidated Balance Sheets. At December 31, 2023 and 2022, our allowance for credit losses was $3.2 million and $2.9 million, respectively. Credit losses for the years ended December 31, 2023, 2022 and 2021 were $1.2 million, $0.6 million and $1.5 million, respectively. Straight-Line Revenue Receivable—We evaluate the collectability of our straight-line revenue receivables in accordance with the provisions of ASC 842, where if the collectability of lease payments is not probable at the commencement date, or at any time during the lease term, then we limit the lease revenue to the lesser of the revenue recognized on a straight-line basis or cash basis. If our assessment of collectability changes after the commencement date, we record the difference between the lease revenue that would have been recognized on a straight-line basis and cash basis as a current period adjustment to lease revenue. Leases—We determine if an arrangement is a lease at contract inception. A lease exists when a contract conveys the right to control the use of identified property, plant, or equipment for a period of time in exchange for consideration. As a lessee, we enter into lease contracts including ground, tower, equipment, building, automobile, colocation and fiber lease arrangements, and service contracts that may include embedded leases. When we are the lessee, we classify leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase. This classification will determine whether lease expense is comprised of amortization on the right-of-use (“ROU”) asset and interest expense recognized based on an effective interest method (a finance lease) or as a single lease cost recognized on a straight-line basis over the term of the lease (an operating lease). We recognize an ROU asset and a lease liability for all leases with a term of greater than 12 months regardless of classification. We recognize the lease payments associated with our short-term leases, which have lease terms less than 12 months, as an expense on a straight-line basis over the lease term. ROU assets and lease liabilities related to operating leases where we are the lessee are separately stated on our Consolidated Balance Sheets. The ROU asset is initially measured as the initial amount of the lease liability adjusted for lease payments made at or before the lease commencement date, plus any initial direct costs incurred less, any lease incentives received. The ROU asset is subsequently measured throughout the lease term at the carrying amount of the lease liability, plus initial direct costs, plus (minus) any prepaid (accrued) lease payments, less the unamortized balance of lease incentives received. The lease liabilities are initially and subsequently measured at the present value of the unpaid lease payments. Lease expense for lease payments is recognized on a straight-line basis over the lease term. ROU assets and lease liabilities related to finance leases where we are the lessee are included in property, plant and equipment, net and finance lease obligations, respectively, on our Consolidated Balance Sheets. The ROU asset is initially measured as the initial amount of the lease liability adjusted for lease payments made at or before the lease commencement date, plus any initial direct costs incurred less, any lease incentives received. The ROU asset is subsequently amortized using the straight-line method from the lease commencement date to the earlier of the end of its useful life or the end of the lease term unless the lease transfers ownership of the underlying asset to us, or we are reasonably certain to exercise an option to purchase the underlying asset. In those cases, the ROU asset is amortized over the useful life of the underlying asset. The lease liabilities are initially measured in the same manner as operating leases and are subsequently measured at amortized cost using the effective interest method. Amortization of the finance lease assets is recognized and presented separately from interest expense on the lease liability, as part of depreciation and amortization expense on the Consolidated Statements of (Loss) Income. We have lease agreements which include lease and nonlease components. For leases where we are a lessee, we have elected to combine lease and nonlease components for all lease contracts. For leases where we are the lessor, we combine the lease and non-lease components when the components qualify to be combined and we account for the combined arrangement based on whether the lease or non-lease component is predominant. Maintenance services are the primary nonlease components and the combined components typically are treated as leases for revenue recognition purposes. We have elected to exclude sales taxes from lease payments in arrangements where we are a lessor. Operating leases where we are the lessor are included in Uniti Leasing and Unit Fiber revenues on our Consolidated Statements of (Loss) Income. For operating leases where we are the lessor, we continue recognizing the underlying asset and depreciating it over its estimated useful life. Lease income is recognized on a straight-line basis over the lease term. Leasing revenue is not recognized when collection of all contractual rents over the term of the agreement is not probable. When collection is not probable, we limit the lease revenue to the lesser of the revenue recognized on a straight-line basis or cash basis. From time to time we may enter into sales-type lease arrangements as a lessor that may include (i) a lessee obligation to purchase the leased equipment at the end of the lease term, (ii) a bargain purchase option, (iii) a lease term having a duration that is for the major part of the remaining economic life of the leased equipment or (iv) provides for minimum lease payments with a present value amounting to substantially all of the fair value of the leased asset at the date of lease commencement. Variable lease payments associated with our leases are recognized when the event, activity, or circumstance in the lease agreement on which those payments are assessed occurs. Variable lease payments are presented within Uniti Leasing and Unit Fiber revenues and general and administrative expense and operating expense in our Consolidated Statements of (Loss) Income in the same line item as revenue arising from fixed lease payments (operating leases where we are the lessor) and expense arising from fixed lease payments (operating leases where we are the lessee) or amortization of the ROU asset (finance leases), respectively. We monitor for events or changes in circumstances that require a reassessment of a lease. When a reassessment results in the remeasurement of a lease liability, a corresponding adjustment is made to the carrying amount of the corresponding ROU asset unless doing so would reduce the carrying amount of the ROU asset to an amount less than zero. In that case, the amount of the adjustment that would result in a negative ROU asset balance is recorded in general and administrative and operating expense in our Consolidated Statements of (Loss) Income. Key lease estimates and judgments include how we determined (i) the discount rate we use to discount the unpaid lease payments to present value, (ii) lease term and (iii) lease payments. i.ASC 842 requires a lessor to discount its unpaid lease payments using the interest rate implicit in the lease and a lessee to discount its unpaid lease payments using the interest rate implicit in the lease or, if that rate cannot be readily determined, its incremental borrowing rate. As we generally do not know the implicit rate for our leases where we are the lessee, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. Our incremental borrowing rate for a lease is the rate of interest we would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms. ii.The lease term for all of our leases includes the noncancellable period of the lease plus any additional periods covered by either a lessee option to extend (or not to terminate) the lease that the lessee is reasonably certain to exercise, or an option to extend (or not to terminate) the lease controlled by the lessor. iii.Lease payments included in the measurement of the lease asset or liability comprise the following: (i) fixed payments (including in-substance fixed payments), (ii) variable payments that depend on index or rate based on the index or rate at lease commencement, and (iii) the exercise price of a lessee option to purchase the underlying asset if the lessee is reasonably certain to exercise. Stock-Based Compensation—We account for stock-based compensation using the fair value method of accounting. We have determined that our stock-based payment awards granted in exchange for employee services qualify as equity classified awards, which are measured based on the fair value of the award on the date of the grant. The fair value of restricted stock-based payments is based on the market value of our common stock on the date of grant. The fair value of performance-based awards, which have performance conditions, is based on a Monte Carlo simulation. The fair value of all stock-based compensation is recognized over the period during which an employee is required to provide services in exchange for the award. See Note 14. Income Taxes—We elected on our initial U.S. federal income tax return to be treated as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). To qualify as a REIT, we must distribute at least 90% of our annual REIT taxable income, determined without regard to the dividends paid deduction and excluding any capital gains, to shareholders, and meet certain organizational and operational requirements, including asset holding requirements. As a REIT, we will generally not be subject to U.S. federal income tax on income that we distribute as dividends to our shareholders. If we fail to qualify as a REIT in any taxable year, we will be subject to U.S. federal income tax on our taxable income at regular corporate income tax rates, and we could not deduct dividends paid to our shareholders in computing taxable income. Any resulting corporate liability could be substantial and could materially and adversely affect our net income and net cash available for distribution to shareholders. Unless we were entitled to relief under certain Code provisions, we also would be disqualified from reelecting to be taxed as a REIT for the four taxable years following the year in which we failed to qualify as a REIT. We may be required to record a provision in our Consolidated Financial Statements for U.S. federal income taxes related to the activities of the REIT and its passthrough subsidiaries for any undistributed income. We are subject to the statutory requirements of the locations in which we conduct business, and state and local income taxes are accrued as deemed required in the best judgment of management based on analysis and interpretation of respective tax laws. We have elected to treat the subsidiaries through which we operate Uniti Fiber and certain subsidiaries of Uniti Leasing as taxable REIT subsidiaries (“TRSs”). TRSs enable us to engage in activities that result in income that does not constitute qualifying income for a REIT. Our TRSs are subject to U.S. federal, state and local corporate income taxes. Deferred tax assets and liabilities are recognized under the asset and liability method for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax balances are adjusted to reflect tax rates based on currently enacted tax laws, which will be in effect in the years in which the temporary differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the results of operations in the period of the enactment date. A valuation allowance is recorded to reduce the carrying amounts of deferred tax assets unless it is more likely than not that such assets will be realized. We recognize the benefit of tax positions that are "more likely than not" to be sustained upon examination based on their technical merit. The benefit of a tax position is measured at the largest amount that has a greater than 50 percent likelihood of being realized upon ultimate settlement. If applicable, we will report tax-related penalties and interest expense as a component of income tax expense. We currently have unrecognized tax benefits of $1.7 million recorded in deferred income taxes on our Consolidated Balance Sheet. The Company may be subject to state corporate level tax in a certain limited number of states on any built-in gain recognized from a sale of assets occurring within a ten-year recognition period after the Spin-Off. The five-year recognition period applicable for federal corporate level tax on any built-in gain recognized from a sale of assets occurring within five years after the Spin-Off expired in 2020. Business Combinations and Asset Acquisitions—In accordance with ASC 805, Business Combinations, we apply the acquisition method of accounting for acquisitions meeting the definition of a business combination or asset acquisition, where assets acquired and liabilities assumed are recorded at fair value at the date of each acquisition, and the results of operations are included with those of the Company from the dates of the respective acquisitions. The fair value of the acquired assets and liabilities are estimated using the income, market and/or cost approach. The income approach utilizes the present value of estimated future cash flows that a business or asset can be expected to generate, while under the market approach, the fair value of an asset or business reflects the price at which comparable assets are purchased under similar circumstances. Inherent in our preparation of cash flow projections are significant assumptions and estimates derived from a review of operating results, business plans, expected growth rates, capital expenditure plans, cost of capital and tax rates. We also make certain forecasts about future economic conditions, interest rates and other market data. Many of the factors used in assessing fair value are outside the control of management. Small changes in these assumptions or estimates could materially affect the cash flow projections, and therefore could affect the estimated fair value. Impacts of these assumptions or estimates include customer retention, execution of our business plans, which impact growth, cost escalation impacting margin, the level of capital expenditures required to sustain our growth and market factors, including interest rate and stock price fluctuations, impacting our cost of capital. For acquisitions meeting the definition of a business combination, any excess of the purchase price paid by the Company over the amounts recognized for assets acquired and liabilities assumed is recorded as goodwill. ASC 805 also requires acquirers to, among other things, estimate the acquisition date fair value of any contingent consideration and recognize any subsequent changes in the fair value of contingent consideration in earnings. When provisional amounts are initially recorded, the Company continues to evaluate acquisitions for a period not to exceed one year after the applicable acquisition date of each transaction to determine whether any additional adjustments are needed to the allocation of the purchase price paid for the assets acquired and liabilities assumed. For acquisitions meeting the definition of an asset acquisition, the fair value of the consideration transferred, including transaction costs, is allocated to the assets acquired and liabilities assumed based on their relative fair values. There are significant judgments and estimates used in determining the fair values of the assets acquired and liabilities assumed, which include assumptions with respect to items such as replacement cost, land value, assemblage factor, discount rate, lease-up period, implied rents per strand mile, and useful life. No goodwill is recognized in an asset acquisition. Noncontrolling Interest—The limited partner equity interests in our operating partnership are exchangeable on a one-for-one basis for shares of our common stock or, at our election, cash of equivalent value. All of the limited partner equity interests in our operating partnership not held by the Company are reflected as noncontrolling interests. In the Consolidated Statements of (Loss) Income, we allocate net income (loss) attributable to noncontrolling interests to arrive at net (loss) income attributable to shareholders based on their proportionate share. For transactions that result in changes to the Company's ownership interest in our operating partnership, the carrying amount of noncontrolling interests is adjusted to reflect such changes. The difference between the fair value of the consideration received or paid and the amount by which the noncontrolling interest is adjusted is reflected as an adjustment to additional paid-in capital on the Consolidated Balance Sheets. Investments in Unconsolidated Entities—We report our investments in unconsolidated entities under the equity method of accounting. We adjust our investments in unconsolidated entities for additional contributions made, distributions received as well as our share of the investees’ earnings or losses, which are reported on a 30-day lag for the investment in BB Fiber Holdings LLC (“Fiber Holdings”) and on a 90-day lag for the investment in Harmoni Towers LP (“Harmoni”), and are included in equity in earnings from unconsolidated entities in our Consolidated Statements of (Loss) Income. See Note 8. Goodwill—As of December 31, 2023, and 2022, all of our goodwill is included in our Uniti Fiber segment. Goodwill is recognized for the excess of purchase price over the fair value of net assets of businesses acquired. Goodwill is reviewed for impairment on an annual basis. Our annual impairment test is performed with a valuation date of October 1. In accordance with ASC 350-20, Intangibles-Goodwill and Other ("ASC 350-20"), we evaluate goodwill for impairment between annual impairment tests if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount (a “Triggering Event”). On the occurrence of a Triggering Event, an entity has the option to first assess qualitative factors to determine whether a quantitative impairment test is necessary. If it is more likely than not that goodwill is impaired, the fair value of the reporting unit must be compared with its carrying value. Unless circumstances otherwise dictate, the annual impairment test is performed in the fourth quarter. Application of the goodwill impairment test requires significant judgment, including: the identification of reporting units; assignment of assets and liabilities to reporting units; assignment of goodwill to reporting units; and the estimation of the fair value of a reporting unit. During the third quarter of 2023, the Company identified a Triggering Event under ASC 350-20 and, therefore, performed a qualitative and quantitative goodwill impairment test with a valuation date of September 30, 2023. The Triggering Event was a result of macroeconomic and financial market factors, specifically increased interest rates impacting our discount rate. As a result, we concluded that the fair value of the Uniti Fiber reporting unit, estimated using a combination of the income approach and market approach, was less than its carrying amount. Accordingly, we recorded a $204.0 million goodwill impairment charge in the Uniti Fiber reporting unit. During the third quarter of 2022, the Company identified a Triggering Event under ASC 350-20 and, therefore, performed a qualitative and quantitative goodwill impairment test with a valuation date of September 30, 2022. The Triggering Event was a result of macroeconomic and financial market factors, specifically increased interest rates impacting our discount rate. As a result, we concluded that the fair value of the Uniti Fiber reporting unit, estimated using a combination of the income approach and market approach, was less than its carrying amount. Accordingly, we recorded a $216.0 million goodwill impairment charge in the Uniti Fiber reporting unit. During the fourth quarter of 2022, we performed an additional quantitative and qualitative impairment test, and concluded that as a result of the continuing macroeconomic and financial market factors, specifically increased interest rates impacting our discount rate, the fair value of the Uniti Fiber reporting unit was less than its carrying amount. As a result, we recorded an additional $24.5 million goodwill impairment charge in the Uniti Fiber reporting unit. During the year ended December 31, 2021, no impairment losses were recognized. We estimate the fair value of our reporting units (which are our segments) using a combination of an income approach based on the present value of estimated future cash flows and a market approach based on market data of comparable businesses and acquisition multiples paid in recent transactions. We evaluate the appropriateness of each valuation methodology in determining the weighting applied to each methodology in the determination of the concluded fair value. If the carrying amount of a reporting unit's net assets is less than its fair value, no impairment exists. If the carrying amount of the reporting unit is greater than the fair value of the reporting unit, an impairment loss must be recognized for the excess and recorded in the Consolidated Statements of (Loss) Income not to exceed the carrying amount of goodwill. Inherent in our preparation of cash flow projections are significant assumptions and estimates derived from a review of our operating results and business plans, which includes expected revenue and expense growth rates, capital expenditure plans and cost of capital. In determining these assumptions, we consider our ability to execute on our plans, future economic conditions, interest rates and other market data. Many of the factors used in assessing fair value are outside the control of management, and these assumptions and estimates may change in future periods. Small changes in these assumptions or estimates could materially affect our cash flow projections, and therefore could affect the likelihood and amount of potential impairment in future periods. Potential events that could negatively impact these assumptions or estimates may include customer losses or poor execution of our business plans, which impact revenue growth, cost escalation impacting margin, the level of capital expenditures required to sustain our growth and market factors, including stock price fluctuations and increased rates, impacting our cost of capital. For example, if we were to experience a significant delay in our permitting process in the construction of our fiber networks, the timing of effected cash flows could impact long term growth rates and negatively impact the income approach, leading to potential impairment. As a result, should our expectations of average projected revenue growth percentage, average projected EBITDA margin percentage and/or average projected capital expenditures as a percentage of revenue change, we may experience future impairment to goodwill (while other assumptions remain constant). Furthermore, a deterioration in market factors such as stock prices or increased interest rates and/or declines in acquisition multiples utilized in the market approach could affect the likelihood and amount of potential impairment. Earnings per Share—Outstanding restricted stock awards that contain rights to non-forfeitable dividends are deemed to be participating securities, requiring the application of the two-class method of computing basic and dilutive earnings per share. Basic earnings per share includes only the weighted average number of common shares outstanding during the period. Dilutive earnings per share includes the weighted average number of common shares and the dilutive effect of restricted stock, performance-based awards outstanding during the period, the Convertible 2027 Notes and the Exchangeable Notes, when such awards are dilutive. See Note 15. Concentration of Credit Risks—Revenue under the Windstream Leases provided 67.3% of our revenue for the year ended December 31, 2023, 66.5% of our revenue for the year ended December 31, 2022, and 66.4% of our revenue for the year ended December 31, 2021. Because a substantial portion of our revenue and cash flows are derived from lease payments by Windstream pursuant to the Windstream Leases, there could be a material adverse impact on our consolidated results of operations, liquidity, financial condition and/or ability to pay dividends and service debt if Windstream were to default under the Windstream Leases or otherwise experiences operating or liquidity difficulties and becomes unable to generate sufficient cash to make payments to us. Prior to its emergence from bankruptcy on September 21, 2020, Windstream was a publicly traded company subject to the periodic filing requirements of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Windstream historic filings through their quarter ended June 30, 2020 can be found at www.sec.gov. On September 22, 2020, Windstream filed a Form 15 to terminate all filing obligations under Sections 12(g) and 15(d) under the Exchange Act. Windstream’s filings are not incorporated by reference in this Annual Report on Form 10-K. We monitor the credit quality of Windstream through numerous methods, including by (i) reviewing credit ratings of Windstream by nationally recognized credit agencies, (ii) reviewing the financial statements of Windstream that are required to be delivered to us pursuant to the Windstream Leases, (iii) monitoring new reports regarding Windstream and its business, (iv) conducting research to ascertain industry trends potentially affecting Windstream, (v) monitoring Windstream’s compliance with the terms of the Windstream Leases and (vi) monitoring the timeliness of its payments under the Windstream Leases. As of the date of this Annual Report on Form 10-K, Windstream is current on all lease payments. We note that in August 2020, Moody’s Investor Service assigned a B3 corporate family rating with a stable outlook to Windstream in connection with its post-emergence exit financing. At the same time, S&P Global Ratings assigned Windstream a B- issuer rating with a stable outlook. These ratings were both upgrades from Windstream’s pre-bankruptcy ratings. Both ratings remain current as of the date of this filing. In order to assist us in our continuing assessment of Windstream’s creditworthiness, we periodically receive certain confidential financial information and metrics from Windstream. Reclassifications—Certain prior year asset and liability categories and related amounts have been reclassified to conform with current year presentation. Operating lease right of use assets, net and operating lease liabilities are now presented separately on our Consolidated Balance Sheets. Recently Adopted Accounting Pronouncements In March 2022, the FASB issued Accounting Standards Update ("ASU") 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures ("ASU 2022-02"), which eliminates the accounting guidance for troubled debt restructurings and requires the disclosure of current-period gross write-offs of financing receivables and net investment in leases by year of origination. The Company adopted ASU 2022-02 on January 1, 2023, and the adoption had no impact on the Company's consolidated financial statements. In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 ("ASU 2022-06"), which provides additional relief for contract modifications completed after the December 31, 2022 LIBOR sunset date. The amendment allows for a deferral until December 31, 2024. The Company adopted ASU 2022-06 at issuance, and the adoption had no impact on the Company's consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, Segment Reporting—Improvements to Reportable Segment Disclosures ("ASU 2023-07"), which requires incremental disclosures related to reportable segments. Specifically, the ASU requires disclosure of significant segment expense categories and amounts for each reportable segment. The ASU is effective for fiscal years beginning after December 15, 2023, and interim periods in fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating this guidance to determine the impact it will have on our financial statements.

Summary of Significant Accounting Policies

Use of Estimates—The preparation of financial statements, in accordance with GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and disclosure of contingent assets and liabilities. The estimates and assumptions used in the accompanying financial statements are based upon management’s evaluation of the relevant facts and circumstances as of the date of the financial statements. Actual results may differ from the estimates and assumptions used in preparing the accompanying financial statements, and such differences could be material.

Liquidity—We anticipate continuing to invest in our network infrastructure across our Uniti Leasing and Uniti Fiber portfolios. We also anticipate declaring dividends for the 2024 tax year to comply with our REIT distribution requirements. We anticipate these expenditures will be met, as well as operating expenses (including our debt service obligations), in the near term from our cash on hand, borrowings under our Revolving Credit Facility and the new $350 million ABS Loan Facility we entered into in February 2024 and cash flows provided by operating activities. Our 2023 capital expenditures of $417.0 million and dividend payments of $107.4 million exceeded our 2023 cash flow from operating activities of $353.1 million, which led us to seek additional external sources of capital. We will closely monitor the equity and debt markets and may seek to access those markets when we deem conditions are appropriate. The amount, nature and timing of any capital markets transactions will depend on our operating performance, capital requirements, and the availability of those capital markets, all of which are subject to uncertainties.

Property, Plant and Equipment—Property, plant and equipment is stated at original cost, net of accumulated depreciation. The Company capitalizes costs incurred in bringing property, plant and equipment to an operational state, including all activities directly associated with the acquisition, construction, and installation of the related assets it owns. The Company

capitalizes a portion of the interest costs it incurs for assets that require a period of time to get them ready for their intended use. The amount of interest that is capitalized is based on the average accumulated expenditures made during the period involved in bringing the assets comprising a network to an operational state at the Company’s weighted average interest rate during the respective accounting period.

The Company also enters into leasing arrangements providing for the long‑term use of constructed fiber that is then integrated into the Company’s network infrastructure. For each lease that qualifies as a finance lease, the present value of the lease payments, which may include both periodic lease payments over the term of the lease as well as upfront payments to the lessor, is capitalized at the inception of the lease and included in property and equipment. As of December 31, 2023 and 2022, the accumulated amortization of our finance lease assets was $20.4 million and $22.2 million, respectively.

On April 24, 2015, we were separated and spun-off (the “Spin-Off”) from Windstream Holdings, Inc. (“Windstream Holdings” and together with Windstream Holdings II, LLC, its successor in interest, and its subsidiaries, “Windstream”) pursuant to which Windstream contributed certain telecommunications network assets, including fiber and copper networks and other real estate (the “Distribution Systems”) to Uniti. Certain property, plant and equipment acquired as part of our Spin-Off is depreciated using a group composite depreciation method. Under this method, when property is retired, the original cost, net of salvage value, is charged against accumulated depreciation and no immediate gain or loss is recognized on the disposition of the property. For all other property, which includes amortization of finance lease assets, depreciation is computed using the straight-line method over the estimated useful life of the respective property. When the property is retired or otherwise disposed of, the related cost and accumulated depreciation are written-off, with the corresponding gain or loss reflected in operating results. Construction in progress includes direct materials and labor related to fixed assets during the construction period. Depreciation begins once the construction period has ceased and the related asset is placed into service, and the asset will be depreciated over its useful life.

Costs of maintenance and repairs to property, plant and equipment subject to triple-net leasing arrangements are the responsibility of our tenant. Costs of maintenance and repairs to property, plant and equipment not subject to triple-net leasing arrangements are expensed as incurred.

Tenant Capital Improvements—The leases with Windstream (as discussed below) provide that tenant funded capital improvements (“TCIs”), defined as maintenance, repair, overbuild, upgrade or replacements to the leased network, including, without limitation, the replacement of copper distribution systems with fiber distribution systems, automatically become property of Uniti upon their construction by Windstream. We receive non-monetary consideration related to the TCIs as they automatically become our property, and we recognize the cost basis of TCIs that are capital in nature as property, plant and equipment and deferred revenue. We depreciate the property, plant and equipment over their estimated useful lives and amortize the deferred revenue as additional leasing revenues over the same depreciable life of the TCI assets. At December 31, 2023 and 2022, the net book value of TCIs recorded as a component of property, plant and equipment on our Consolidated Balance Sheets was $970.1 million and $884.4 million, respectively. For the years ended December 31, 2023, 2022 and 2021, we recognized $47.0 million, $43.2 million, and $39.0 million of revenue and depreciation expense related to TCIs, respectively.

Impairment of Long-Lived Assets—We review long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset group may not be recoverable from future undiscounted net cash flows we expect the asset group to generate. If the asset group is not fully recoverable, an impairment loss would be recognized for the difference between the carrying value of the asset group and its estimated fair value based on discounted net future cash flows. Assets held for sale, if any, are reported at the lower of the carrying amount or fair value less cost to sell. Assets held for sale are no longer depreciated once held for sale criteria are met. During the years ended December 31, 2023, 2022 and 2021, there were no events or changes in circumstances indicating that the carrying amount of any of our assets groups was not recoverable from future undiscounted net cash flows we expect the asset groups to generate, and no impairment losses were recognized.

Asset Retirement Obligations—The Company records obligations to perform asset retirement activities, primarily including requirements to remove equipment from leased space or customer sites as required under the terms of the related lease and customer agreements. The fair value of the liability for asset retirement obligations, which represents the net present value of the estimated expected future cash outlay, is recognized in the period in which it is incurred and the fair value of the liability can reasonably be estimated. The liability accretes as a result of the passage of time and related accretion expense is recognized in the Consolidated Statements of (Loss) Income. The associated asset retirement costs are capitalized as an additional carrying amount of the related long‑lived asset and depreciated on a straight-line basis over the asset’s useful life. As of December 31, 2023 and 2022, our aggregate carrying amount of asset retirement obligations

totaled $16.8 million and $13.3 million, respectively. During the year ended December 31, 2023, we incurred $6.5 million in liabilities related to asset retirement obligations and in the year ended December 31, 2022, we incurred no liabilities related to asset retirement obligations. During the years ended December 31, 2023, 2022, and 2021, we recognized $2.8 million, $1.7 million, and $1.5 million of accretion expense related to asset retirement obligations, respectively, included in depreciation and amortization expense in our Consolidated Statements of (Loss) Income.

Cash and Cash Equivalents—Cash and cash equivalents include all non-restricted cash held at financial institutions and other non-restricted highly liquid short-term investments with original maturities of three months or less.

Derivative Instruments and Hedging Activities—We account for our derivatives in accordance with FASB ASC 815, Derivatives and Hedging ("ASC 815"), in which we reflect all derivative instruments at fair value as either assets or liabilities on our Consolidated Balance Sheets. For derivative instruments that are designated and qualify as hedging instruments, we record the effective portion of the gain or loss on the hedged instruments as a component of accumulated other comprehensive income or loss. Any ineffective portion of a derivative’s change in fair value is immediately recognized within net income. For derivatives that do not meet the criteria for hedge accounting, changes in fair value are immediately recognized within net income.

Exchangeable Notes and Related Transactions—On June 28, 2019, Uniti Fiber Holdings Inc., a subsidiary of the Company, issued $345 million aggregate principal amount of 4.00% Exchangeable Senior Notes due June 15, 2024 (the “Exchangeable Notes”). The Exchangeable Notes bear interest at a fixed rate of 4.00% per year, payable semiannually in arrears on June 15 and December 15 of each year, beginning on December 15, 2019. The Exchangeable Notes are exchangeable into cash, shares of the Company’s common stock, or a combination thereof, at Uniti Fiber Holdings Inc.’s election. In accordance with ASC 470-20, Debt – Debt with Conversion and Other Options ("ASC 470"), because the conversion feature in the Exchangeable Notes is not bifurcated pursuant to ASC 815 and because the conversion can be settled in cash, shares, or a combination thereof, the Exchangeable Notes were separated into a liability component and an equity component in a manner that reflects Uniti Fiber Holdings Inc.’s non-convertible debt borrowing rate. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated conversion feature. See Note 13. The Company adopted ASU No. 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470- 20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity (“ASU 2020-06”) on January 1, 2021. ASU 2020-06 (1) simplifies the accounting for convertible debt instruments and convertible preferred stock by removing the existing guidance in ASC 470-20 that requires entities to account for beneficial conversion features and cash conversion features in equity, separately from the host convertible debt or preferred stock; (2) revises the scope exception from derivative accounting in ASC 815-40 for freestanding financial instruments and embedded features that are both indexed to the issuer’s own stock and classified in stockholders’ equity, by removing certain criteria required for equity classification; and (3) revises the guidance in ASC 260, Earnings Per Share, to require entities to calculate diluted earnings per share (“EPS”) for convertible instruments by using the if-converted method. In addition, entities must presume share settlement for purposes of calculating diluted EPS when an instrument may be settled in cash or shares. The adoption of ASU 2020-06 resulted in the re-combination of the liability and equity components of these notes into a single liability instrument.

In connection with the offering of the Exchangeable Notes, Uniti Fiber Holdings Inc. entered into exchangeable note hedge transactions with respect to the Company’s common stock (the “Note Hedge Transactions”) with certain of the initial purchasers or their respective affiliates (collectively, the “Counterparties”). In addition, the Company entered into warrant transactions to sell to the Counterparties warrants (the “Warrants”) to acquire, subject to anti-dilution adjustments, up to approximately 27.8 million shares of the Company’s common stock in the aggregate at an exercise price of $16.42 per share. The warrant transactions may have a dilutive effect with respect to the Company’s common stock to the extent the market price per share of the Company’s common stock exceeds the strike price of the Warrants. While the Note Hedge Transactions and the Warrants each meet the definition of a derivative in ASC 815-10-15-83, they each meet the equity scope exception specified in ASC 815-10-15-74(a); as such, the Warrants and the Note Hedge Transactions are not accounted for as derivatives that must be remeasured each reporting period and instead, are recorded in stockholders’ deficit. See Note 13.

On December 12, 2022, in connection with the issuance of the Convertible 2027 Notes (See Note 13), approximately $207.1 million aggregate principal amount of the Exchangeable Notes was repurchased for $194.0 million. Additionally, on March 21, 2023, the Company repurchased approximately $15.0 million of the Exchangeable Notes for total cash consideration of $13.7 million.

On December 7, 2022, in connection with the Company’s repurchase of the Exchangeable Notes, the Company entered into partial unwind agreements (the “Unwind Agreements”) with the Counterparties to unwind a portion of the Note Hedge Transactions and the Warrants described above (collectively, the “Unwind Transactions”). In connection with the Unwind Transactions, the Company received cash as a termination payment for of the portion of the Note Hedge Transactions that were unwound, and the Company delivered cash as a termination payment in respect of the portion of the Warrants that were unwound. The amount of cash that was received, which was approximately $1.2 million, and the amount of cash that was delivered to the Counterparties, which was approximately $0.5 million, were based generally on the termination values of the unwound portions of such instruments. See N o t e 1 1 and Note 13.

Intangible Assets—Intangible assets are presented in the financial statements at cost less accumulated amortization and are amortized using the straight-line method over their estimated useful lives.

Transaction Related and Other Costs—The Company expenses non-capitalizable transaction related and other costs in the period in which they are incurred and services are received. Transaction related costs include acquisition pursuit, transaction and integration costs, including unsuccessful acquisition pursuit costs. Pursuit and transaction costs include professional services (legal, accounting, advisory, regulatory, etc.), finder’s fees, travel expenses, and other direct expenses associated with a business acquisition. Integration costs include direct costs necessary to integrate an acquired business, including professional services, systems and data conversion, severance and retention bonuses payable to employees of an acquired business. In addition, other costs, such as costs incurred as a result of Windstream’s bankruptcy filing, costs associated with Windstream’s claims against us (see Note 17), and costs associated with the implementation of our enterprise resource planning system are included within this line item on the Consolidated Statements of (Loss) Income.

Settlement Payable—On July 25, 2019, in connection with Windstream’s bankruptcy, Windstream filed a complaint with the Bankruptcy Court against Uniti and certain of its affiliates, alleging, among other things, that the Master Lease (as defined in Note 5) should be recharacterized as a financing arrangement, that certain rent payments and TCIs made by Windstream under the Master Lease constitute constructive fraudulent transfers, that the Master Lease is a lease of personal property and that Uniti breached certain of its obligations under the Master Lease. On March 2, 2020, Uniti and Windstream jointly announced that they agreed to the Settlement (as defined below) to resolve any and all claims and causes of action that have been or may be asserted against Uniti by Windstream, including all litigation brought by Windstream and certain of its creditors in the context of Windstream’s bankruptcy, and on May 12, 2020, the Bankruptcy Court entered an order approving Windstream’s assumption of the Master Lease as part of the Settlement.

In connection with Windstream’s emergence from bankruptcy on September 21, 2020, Uniti entered into several agreements and consummated several transactions, including a stock transaction closed on September 18, 2020 in which we issued 38,633,470 shares of Uniti common stock to certain first lien creditors of Windstream and transferred the proceeds to Windstream and an asset transaction closed on September 18, 2020, in which we paid to Windstream approximately $284.6 million in exchange for certain fiber assets and dark fiber dark fiber indefeasible rights of use related thereto, to implement its settlement (the “Settlement”) with Windstream pursuant to the settlement agreement dated as of May 12, 2020 between Uniti and Windstream. Pursuant to the Settlement, Uniti and Windstream agreed to mutual releases with respect to any and all liability related to any claims and causes of action between them, including those brought by Windstream and certain of its creditors relating to Windstream’s Chapter 11 proceedings and the Master Lease. On January 8, 2021, Windstream filed in the bankruptcy court a stipulation and order dismissing the adversary proceeding against Uniti with prejudice subject to the terms set forth in the settlement agreement. The stipulation and order was entered by the bankruptcy court on January 25, 2021.

In accordance with the Settlement, we also have a number of ongoing obligations including the following:

i.we are obligated to make $490.1 million of cash payments to Windstream in equal installments over 20 consecutive quarters beginning in October 2020, and we may prepay any installments due on or after the first anniversary of the settlement agreement (discounted at a 9% rate). As of December 31, 2023, the Company has made payments totaling $313.4 million; and

ii.we are obligated to reimburse Windstream for Growth Capital Improvements as described in Note 5.

Debt Issuance Costs—The Company recognizes debt issuance costs related to a recognized debt liability as a direct deduction from the carrying amount of the debt liability, consistent with debt discounts. The costs, which include underwriting, legal, and other direct costs related to the issuance of debt, are amortized over the contractual term of the debt using the effective interest method.

Revenue Recognition— The following is a description of principal activities, separated by reportable segments (see Note 16), from which the Company generates its revenues. We exclude from the transaction price any amounts collected from customers for sales taxes and therefore, they are not included in revenue.

Uniti Leasing revenue represents the results from our Uniti Leasing segment, which is engaged in the acquisition and construction of mission-critical communications assets and leasing them to anchor customers on either an exclusive or shared-tenant basis. See discussion in “Leases” in this Note 3 and Note 5.

The Windstream Leases (as defined in Note 5) are long-term exclusive triple-net leases, whereby Windstream is responsible for the costs related to operating the Distribution Systems, including property taxes, insurance and maintenance and repair costs. As a result, we do not record an obligation related to the payment of property taxes or insurance, as Windstream makes direct payments to the taxing authorities and insurance carriers, respectively.

The Uniti Fiber segment represents the operations of our fiber business, Uniti Fiber, which provides:

i.Consumer, enterprise, wholesale, and backhaul lit fiber revenue is recognized over the life of the contracts in a pattern that reflects the satisfaction of Uniti’s stand-ready obligation to provide lit fiber services. The transaction price is equal to the monthly-recurring charge multiplied by the contract term, plus any non-recurring or variable charges. For each contract, the customer is invoiced monthly.

ii.E-Rate contracts involve providing lit fiber services to schools and libraries, and revenue is recognized over the life of the contract in a pattern that reflects the satisfaction of Uniti’s stand-ready obligation to provide lit fiber services. The transaction price is equal to the monthly-recurring charge multiplied by the contract term, plus any non-recurring or variable charges. For each contract, the customer is invoiced monthly.

iii.Construction revenue is generated from contracts to provide various construction services such as equipment installation or the laying of fiber. Construction revenue is recognized over time as construction activities occur as we are either enhancing a customer’s owned asset or constructing an asset with no alternative use to us and we would be entitled to our costs plus a reasonable profit margin if the contract was terminated early by the customer. We are utilizing our costs incurred as the measure of progress of satisfying our performance obligation.

iv.Dark fiber and small cell arrangements represent operating leases and revenue is recognized under the leasing guidance. When (i) a customer makes an advance payment or (ii) a customer is contractually obligated to pay any amounts in advance, which is not deemed a separate performance obligation, deferred leasing revenue is recorded. This leasing revenue is recognized ratably over the expected term of the contract, unless the pattern of service suggests otherwise.

v.The Company generates revenues from other services, such as consultation services and equipment sales. Revenue from the sale of customer premise equipment and modems that are not provided as an essential part of the telecommunications services, including broadband, long distance, and enhanced services is recognized when products are delivered to and accepted by the customer. Revenue from customer premise equipment and modems provided as an essential part of the telecommunications services, including broadband, long distance, and enhanced services are recognized over time in a pattern that reflects the satisfaction of the service performance obligation.

Commissions – Under Topic 606 and Topic 340, Other Assets and Deferred Costs, we capitalize commission fees as costs of obtaining a contract when those commissions are incremental and expected to be recovered from the revenue contract and we amortize those capitalized costs consistent with the pattern of transfer of the product or service to which the

capitalized costs relate. The amortization of these costs are included in general and administrative expense on the Consolidated Statements of (Loss) Income.

We are exposed to credit losses primarily through our trade receivables. We assess ability to pay for certain customers by considering a variety of factors, such as the customer’s established credit rating, if available, and our assessment of creditworthiness. We determine the allowance for credit losses on accounts receivable using a combination of specific reserves for accounts that are deemed to exhibit credit loss indicators and general reserves that are determined using loss rates based on historical experience and economic expectations. We update our estimate of credit loss reserves quarterly, considering recent write-offs, collections information and underlying economic expectations. The allowance for credit losses is recorded in accounts receivable, net on our Consolidated Balance Sheets. At December 31, 2023 and 2022, our allowance for credit losses was $3.2 million and $2.9 million, respectively. Credit losses for the years ended December 31, 2023, 2022 and 2021 were $1.2 million, $0.6 million and $1.5 million, respectively.

Straight-Line Revenue Receivable—We evaluate the collectability of our straight-line revenue receivables in accordance with the provisions of ASC 842, where if the collectability of lease payments is not probable at the commencement date, or at any time during the lease term, then we limit the lease revenue to the lesser of the revenue recognized on a straight-line basis or cash basis. If our assessment of collectability changes after the commencement date, we record the difference between the lease revenue that would have been recognized on a straight-line basis and cash basis as a current period adjustment to lease revenue.

Leases—We determine if an arrangement is a lease at contract inception. A lease exists when a contract conveys the right to control the use of identified property, plant, or equipment for a period of time in exchange for consideration.

As a lessee, we enter into lease contracts including ground, tower, equipment, building, automobile, colocation and fiber lease arrangements, and service contracts that may include embedded leases.

When we are the lessee, we classify leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase. This classification will determine whether lease expense is comprised of amortization on the right-of-use (“ROU”) asset and interest expense recognized based on an effective interest method (a finance lease) or as a single lease cost recognized on a straight-line basis over the term of the lease (an operating lease). We recognize an ROU asset and a lease liability for all leases with a term of greater than 12 months regardless of classification. We recognize the lease payments associated with our short-term leases, which have lease terms less than 12 months, as an expense on a straight-line basis over the lease term.

ROU assets and lease liabilities related to operating leases where we are the lessee are separately stated on our Consolidated Balance Sheets. The ROU asset is initially measured as the initial amount of the lease liability adjusted for lease payments made at or before the lease commencement date, plus any initial direct costs incurred less, any lease incentives received. The ROU asset is subsequently measured throughout the lease term at the carrying amount of the lease liability, plus initial direct costs, plus (minus) any prepaid (accrued) lease payments, less the unamortized balance of lease incentives received. The lease liabilities are initially and subsequently measured at the present value of the unpaid lease payments. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

ROU assets and lease liabilities related to finance leases where we are the lessee are included in property, plant and equipment, net and finance lease obligations, respectively, on our Consolidated Balance Sheets. The ROU asset is initially measured as the initial amount of the lease liability adjusted for lease payments made at or before the lease commencement date, plus any initial direct costs incurred less, any lease incentives received. The ROU asset is subsequently amortized using the straight-line method from the lease commencement date to the earlier of the end of its useful life or the end of the lease term unless the lease transfers ownership of the underlying asset to us, or we are reasonably certain to exercise an option to purchase the underlying asset. In those cases, the ROU asset is amortized over the useful life of the underlying asset. The lease liabilities are initially measured in the same manner as operating leases and are subsequently measured at amortized cost using the effective interest method. Amortization of the finance lease assets is recognized and presented separately from interest expense on the lease liability, as part of depreciation and amortization expense on the Consolidated Statements of (Loss) Income.

We have lease agreements which include lease and nonlease components. For leases where we are a lessee, we have elected to combine lease and nonlease components for all lease contracts. For leases where we are the lessor, we combine the lease and non-lease components when the components qualify to be combined and we account for the combined arrangement based on whether the lease or non-lease component is predominant. Maintenance services are the primary

nonlease components and the combined components typically are treated as leases for revenue recognition purposes. We have elected to exclude sales taxes from lease payments in arrangements where we are a lessor.

Operating leases where we are the lessor are included in Uniti Leasing and Unit Fiber revenues on our Consolidated Statements of (Loss) Income.

For operating leases where we are the lessor, we continue recognizing the underlying asset and depreciating it over its estimated useful life. Lease income is recognized on a straight-line basis over the lease term. Leasing revenue is not recognized when collection of all contractual rents over the term of the agreement is not probable. When collection is not probable, we limit the lease revenue to the lesser of the revenue recognized on a straight-line basis or cash basis.

From time to time we may enter into sales-type lease arrangements as a lessor that may include (i) a lessee obligation to purchase the leased equipment at the end of the lease term, (ii) a bargain purchase option, (iii) a lease term having a duration that is for the major part of the remaining economic life of the leased equipment or (iv) provides for minimum lease payments with a present value amounting to substantially all of the fair value of the leased asset at the date of lease commencement.

Variable lease payments associated with our leases are recognized when the event, activity, or circumstance in the lease agreement on which those payments are assessed occurs. Variable lease payments are presented within Uniti Leasing and Unit Fiber revenues and general and administrative expense and operating expense in our Consolidated Statements of (Loss) Income in the same line item as revenue arising from fixed lease payments (operating leases where we are the lessor) and expense arising from fixed lease payments (operating leases where we are the lessee) or amortization of the ROU asset (finance leases), respectively.

We monitor for events or changes in circumstances that require a reassessment of a lease. When a reassessment results in the remeasurement of a lease liability, a corresponding adjustment is made to the carrying amount of the corresponding ROU asset unless doing so would reduce the carrying amount of the ROU asset to an amount less than zero. In that case, the amount of the adjustment that would result in a negative ROU asset balance is recorded in general and administrative and operating expense in our Consolidated Statements of (Loss) Income.

Key lease estimates and judgments include how we determined (i) the discount rate we use to discount the unpaid lease payments to present value, (ii) lease term and (iii) lease payments.

i.ASC 842 requires a lessor to discount its unpaid lease payments using the interest rate implicit in the lease and a lessee to discount its unpaid lease payments using the interest rate implicit in the lease or, if that rate cannot be readily determined, its incremental borrowing rate. As we generally do not know the implicit rate for our leases where we are the lessee, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. Our incremental borrowing rate for a lease is the rate of interest we would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms.

ii.The lease term for all of our leases includes the noncancellable period of the lease plus any additional periods covered by either a lessee option to extend (or not to terminate) the lease that the lessee is reasonably certain to exercise, or an option to extend (or not to terminate) the lease controlled by the lessor.

iii.Lease payments included in the measurement of the lease asset or liability comprise the following: (i) fixed payments (including in-substance fixed payments), (ii) variable payments that depend on index or rate based on the index or rate at lease commencement, and (iii) the exercise price of a lessee option to purchase the underlying asset if the lessee is reasonably certain to exercise.

Stock-Based Compensation—We account for stock-based compensation using the fair value method of accounting. We have determined that our stock-based payment awards granted in exchange for employee services qualify as equity classified awards, which are measured based on the fair value of the award on the date of the grant. The fair value of restricted stock-based payments is based on the market value of our common stock on the date of grant. The fair value of performance-based awards, which have performance conditions, is based on a Monte Carlo simulation. The fair value of all

stock-based compensation is recognized over the period during which an employee is required to provide services in exchange for the award. See Note 14.

Income Taxes—We elected on our initial U.S. federal income tax return to be treated as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). To qualify as a REIT, we must distribute at least 90% of our annual REIT taxable income, determined without regard to the dividends paid deduction and excluding any capital gains, to shareholders, and meet certain organizational and operational requirements, including asset holding requirements. As a REIT, we will generally not be subject to U.S. federal income tax on income that we distribute as dividends to our shareholders. If we fail to qualify as a REIT in any taxable year, we will be subject to U.S. federal income tax on our taxable income at regular corporate income tax rates, and we could not deduct dividends paid to our shareholders in computing taxable income. Any resulting corporate liability could be substantial and could materially and adversely affect our net income and net cash available for distribution to shareholders. Unless we were entitled to relief under certain Code provisions, we also would be disqualified from reelecting to be taxed as a REIT for the four taxable years following the year in which we failed to qualify as a REIT.

We may be required to record a provision in our Consolidated Financial Statements for U.S. federal income taxes related to the activities of the REIT and its passthrough subsidiaries for any undistributed income. We are subject to the statutory requirements of the locations in which we conduct business, and state and local income taxes are accrued as deemed required in the best judgment of management based on analysis and interpretation of respective tax laws.

We have elected to treat the subsidiaries through which we operate Uniti Fiber and certain subsidiaries of Uniti Leasing as taxable REIT subsidiaries (“TRSs”). TRSs enable us to engage in activities that result in income that does not constitute qualifying income for a REIT. Our TRSs are subject to U.S. federal, state and local corporate income taxes.

Deferred tax assets and liabilities are recognized under the asset and liability method for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax balances are adjusted to reflect tax rates based on currently enacted tax laws, which will be in effect in the years in which the temporary differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the results of operations in the period of the enactment date. A valuation allowance is recorded to reduce the carrying amounts of deferred tax assets unless it is more likely than not that such assets will be realized.

We recognize the benefit of tax positions that are "more likely than not" to be sustained upon examination based on their technical merit. The benefit of a tax position is measured at the largest amount that has a greater than 50 percent likelihood of being realized upon ultimate settlement. If applicable, we will report tax-related penalties and interest expense as a component of income tax expense. We currently have unrecognized tax benefits of $1.7 million recorded in deferred income taxes on our Consolidated Balance Sheet.

The Company may be subject to state corporate level tax in a certain limited number of states on any built-in gain recognized from a sale of assets occurring within a ten-year recognition period after the Spin-Off. The five-year recognition period applicable for federal corporate level tax on any built-in gain recognized from a sale of assets occurring within five years after the Spin-Off expired in 2020.

Business Combinations and Asset Acquisitions—In accordance with ASC 805, Business Combinations, we apply the acquisition method of accounting for acquisitions meeting the definition of a business combination or asset acquisition, where assets acquired and liabilities assumed are recorded at fair value at the date of each acquisition, and the results of operations are included with those of the Company from the dates of the respective acquisitions. The fair value of the acquired assets and liabilities are estimated using the income, market and/or cost approach. The income approach utilizes the present value of estimated future cash flows that a business or asset can be expected to generate, while under the market approach, the fair value of an asset or business reflects the price at which comparable assets are purchased under similar circumstances. Inherent in our preparation of cash flow projections are significant assumptions and estimates derived from a review of operating results, business plans, expected growth rates, capital expenditure plans, cost of capital and tax rates. We also make certain forecasts about future economic conditions, interest rates and other market data. Many of the factors used in assessing fair value are outside the control of management. Small changes in these assumptions or estimates could materially affect the cash flow projections, and therefore could affect the estimated fair value. Impacts of these assumptions or estimates include customer retention, execution of our business plans, which impact growth, cost escalation impacting margin, the level of capital expenditures required to sustain our growth and market factors, including interest rate and stock price fluctuations, impacting our cost of capital.

For acquisitions meeting the definition of a business combination, any excess of the purchase price paid by the Company over the amounts recognized for assets acquired and liabilities assumed is recorded as goodwill. ASC 805 also requires acquirers to, among other things, estimate the acquisition date fair value of any contingent consideration and recognize any subsequent changes in the fair value of contingent consideration in earnings. When provisional amounts are initially recorded, the Company continues to evaluate acquisitions for a period not to exceed one year after the applicable acquisition date of each transaction to determine whether any additional adjustments are needed to the allocation of the purchase price paid for the assets acquired and liabilities assumed.

For acquisitions meeting the definition of an asset acquisition, the fair value of the consideration transferred, including transaction costs, is allocated to the assets acquired and liabilities assumed based on their relative fair values. There are significant judgments and estimates used in determining the fair values of the assets acquired and liabilities assumed, which include assumptions with respect to items such as replacement cost, land value, assemblage factor, discount rate, lease-up period, implied rents per strand mile, and useful life. No goodwill is recognized in an asset acquisition.

Noncontrolling Interest—The limited partner equity interests in our operating partnership are exchangeable on a one-for-one basis for shares of our common stock or, at our election, cash of equivalent value. All of the limited partner equity interests in our operating partnership not held by the Company are reflected as noncontrolling interests. In the Consolidated Statements of (Loss) Income, we allocate net income (loss) attributable to noncontrolling interests to arrive at net (loss) income attributable to shareholders based on their proportionate share.

For transactions that result in changes to the Company's ownership interest in our operating partnership, the carrying amount of noncontrolling interests is adjusted to reflect such changes. The difference between the fair value of the consideration received or paid and the amount by which the noncontrolling interest is adjusted is reflected as an adjustment to additional paid-in capital on the Consolidated Balance Sheets.

Investments in Unconsolidated Entities—We report our investments in unconsolidated entities under the equity method of accounting. We adjust our investments in unconsolidated entities for additional contributions made, distributions received as well as our share of the investees’ earnings or losses, which are reported on a 30-day lag for the investment in BB Fiber Holdings LLC (“Fiber Holdings”) and on a 90-day lag for the investment in Harmoni Towers LP (“Harmoni”), and are included in equity in earnings from unconsolidated entities in our Consolidated Statements of (Loss) Income. See Note 8.

Goodwill—As of December 31, 2023, and 2022, all of our goodwill is included in our Uniti Fiber segment. Goodwill is recognized for the excess of purchase price over the fair value of net assets of businesses acquired. Goodwill is reviewed for impairment on an annual basis. Our annual impairment test is performed with a valuation date of October 1. In accordance with ASC 350-20, Intangibles-Goodwill and Other ("ASC 350-20"), we evaluate goodwill for impairment between annual impairment tests if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount (a “Triggering Event”). On the occurrence of a Triggering Event, an entity has the option to first assess qualitative factors to determine whether a quantitative impairment test is necessary. If it is more likely than not that goodwill is impaired, the fair value of the reporting unit must be compared with its carrying value. Unless circumstances otherwise dictate, the annual impairment test is performed in the fourth quarter. Application of the goodwill impairment test requires significant judgment, including: the identification of reporting units; assignment of assets and liabilities to reporting units; assignment of goodwill to reporting units; and the estimation of the fair value of a reporting unit.

During the third quarter of 2023, the Company identified a Triggering Event under ASC 350-20 and, therefore, performed a qualitative and quantitative goodwill impairment test with a valuation date of September 30, 2023. The Triggering Event was a result of macroeconomic and financial market factors, specifically increased interest rates impacting our discount rate. As a result, we concluded that the fair value of the Uniti Fiber reporting unit, estimated using a combination of the income approach and market approach, was less than its carrying amount. Accordingly, we recorded a $204.0 million goodwill impairment charge in the Uniti Fiber reporting unit.

During the third quarter of 2022, the Company identified a Triggering Event under ASC 350-20 and, therefore, performed a qualitative and quantitative goodwill impairment test with a valuation date of September 30, 2022. The Triggering Event was a result of macroeconomic and financial market factors, specifically increased interest rates impacting our discount rate. As a result, we concluded that the fair value of the Uniti Fiber reporting unit, estimated using a combination of the income approach and market approach, was less than its carrying amount. Accordingly, we recorded a $216.0 million goodwill impairment charge in the Uniti Fiber reporting unit. During the fourth quarter of 2022, we performed an additional quantitative and qualitative impairment test, and concluded that as a result of the continuing macroeconomic and

financial market factors, specifically increased interest rates impacting our discount rate, the fair value of the Uniti Fiber reporting unit was less than its carrying amount. As a result, we recorded an additional $24.5 million goodwill impairment charge in the Uniti Fiber reporting unit.

During the year ended December 31, 2021, no impairment losses were recognized.

We estimate the fair value of our reporting units (which are our segments) using a combination of an income approach based on the present value of estimated future cash flows and a market approach based on market data of comparable businesses and acquisition multiples paid in recent transactions. We evaluate the appropriateness of each valuation methodology in determining the weighting applied to each methodology in the determination of the concluded fair value. If the carrying amount of a reporting unit's net assets is less than its fair value, no impairment exists. If the carrying amount of the reporting unit is greater than the fair value of the reporting unit, an impairment loss must be recognized for the excess and recorded in the Consolidated Statements of (Loss) Income not to exceed the carrying amount of goodwill.

Inherent in our preparation of cash flow projections are significant assumptions and estimates derived from a review of our operating results and business plans, which includes expected revenue and expense growth rates, capital expenditure plans and cost of capital. In determining these assumptions, we consider our ability to execute on our plans, future economic conditions, interest rates and other market data. Many of the factors used in assessing fair value are outside the control of management, and these assumptions and estimates may change in future periods. Small changes in these assumptions or estimates could materially affect our cash flow projections, and therefore could affect the likelihood and amount of potential impairment in future periods. Potential events that could negatively impact these assumptions or estimates may include customer losses or poor execution of our business plans, which impact revenue growth, cost escalation impacting margin, the level of capital expenditures required to sustain our growth and market factors, including stock price fluctuations and increased rates, impacting our cost of capital. For example, if we were to experience a significant delay in our permitting process in the construction of our fiber networks, the timing of effected cash flows could impact long term growth rates and negatively impact the income approach, leading to potential impairment. As a result, should our expectations of average projected revenue growth percentage, average projected EBITDA margin percentage and/or average projected capital expenditures as a percentage of revenue change, we may experience future impairment to goodwill (while other assumptions remain constant). Furthermore, a deterioration in market factors such as stock prices or increased interest rates and/or declines in acquisition multiples utilized in the market approach could affect the likelihood and amount of potential impairment.

Earnings per Share—Outstanding restricted stock awards that contain rights to non-forfeitable dividends are deemed to be participating securities, requiring the application of the two-class method of computing basic and dilutive earnings per share.

Basic earnings per share includes only the weighted average number of common shares outstanding during the period. Dilutive earnings per share includes the weighted average number of common shares and the dilutive effect of restricted stock, performance-based awards outstanding during the period, the Convertible 2027 Notes and the Exchangeable Notes, when such awards are dilutive. See Note 15.

Concentration of Credit Risks—Revenue under the Windstream Leases provided 67.3% of our revenue for the year ended December 31, 2023, 66.5% of our revenue for the year ended December 31, 2022, and 66.4% of our revenue for the year ended December 31, 2021. Because a substantial portion of our revenue and cash flows are derived from lease payments by Windstream pursuant to the Windstream Leases, there could be a material adverse impact on our consolidated results of operations, liquidity, financial condition and/or ability to pay dividends and service debt if Windstream were to default under the Windstream Leases or otherwise experiences operating or liquidity difficulties and becomes unable to generate sufficient cash to make payments to us.

Prior to its emergence from bankruptcy on September 21, 2020, Windstream was a publicly traded company subject to the periodic filing requirements of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Windstream historic filings through their quarter ended June 30, 2020 can be found at www.sec.gov. On September 22, 2020, Windstream filed a Form 15 to terminate all filing obligations under Sections 12(g) and 15(d) under the Exchange Act. Windstream’s filings are not incorporated by reference in this Annual Report on Form 10-K.

We monitor the credit quality of Windstream through numerous methods, including by (i) reviewing credit ratings of Windstream by nationally recognized credit agencies, (ii) reviewing the financial statements of Windstream that are required to be delivered to us pursuant to the Windstream Leases, (iii) monitoring new reports regarding Windstream and

its business, (iv) conducting research to ascertain industry trends potentially affecting Windstream, (v) monitoring Windstream’s compliance with the terms of the Windstream Leases and (vi) monitoring the timeliness of its payments under the Windstream Leases.

As of the date of this Annual Report on Form 10-K, Windstream is current on all lease payments. We note that in August 2020, Moody’s Investor Service assigned a B3 corporate family rating with a stable outlook to Windstream in connection with its post-emergence exit financing. At the same time, S&P Global Ratings assigned Windstream a B- issuer rating with a stable outlook. These ratings were both upgrades from Windstream’s pre-bankruptcy ratings. Both ratings remain current as of the date of this filing. In order to assist us in our continuing assessment of Windstream’s creditworthiness, we periodically receive certain confidential financial information and metrics from Windstream.

Reclassifications—Certain prior year asset and liability categories and related amounts have been reclassified to conform with current year presentation. Operating lease right of use assets, net and operating lease liabilities are now presented separately on our Consolidated Balance Sheets.

Recently Adopted Accounting Pronouncements

In March 2022, the FASB issued Accounting Standards Update ("ASU") 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures ("ASU 2022-02"), which eliminates the accounting guidance for troubled debt restructurings and requires the disclosure of current-period gross write-offs of financing receivables and net investment in leases by year of origination. The Company adopted ASU 2022-02 on January 1, 2023, and the adoption had no impact on the Company's consolidated financial statements.

In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 ("ASU 2022-06"), which provides additional relief for contract modifications completed after the December 31, 2022 LIBOR sunset date. The amendment allows for a deferral until December 31, 2024. The Company adopted ASU 2022-06 at issuance, and the adoption had no impact on the Company's consolidated financial statements.

Recently Issued Accounting Pronouncements Not Yet Adopted