SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. The most significant estimates relate to the allowance for credit losses on trade receivables, useful lives of the Company’s fixed and finite-lived intangible assets, allocation of purchase price to assets acquired and liabilities assumed in business combinations, fair value of indefinite-lived intangible assets, goodwill and income taxes. Actual results could differ significantly from those estimates.

Restricted Cash

The Company classifies cash that is legally restricted as to withdrawal or usage as restricted cash. Restricted cash as of December 31, 2021 and December 31, 2020 primarily relates to cash that is restricted for regulatory purposes.

Allowance for Credit Losses

The Company adopted ASU 2016-13 on January 1, 2020. The standard requires that certain financial assets be measured at amortized cost reflecting an allowance for estimated credit losses expected to occur over the life of the assets. The estimate of credit losses is based on all relevant information including historical information, current conditions, and reasonable and supportable forecasts that affect the collectability of the amounts. The Company adopted ASU 2016-13 using the modified retrospective approach, however, there was no impact of adoption on retained earnings.

ASU 2016-13 impacts the Company’s calculation of credit losses from trade receivables. Historically, the

Company recorded credit losses subsequent to the initial revenue transaction. After adoption of ASU 2016-13, the Company records an estimate of future credit losses in conjunction with the revenue transactions based on

information available including historical experience, credit worthiness of customers, the Company’s historical experience with customers, current market and economic conditions, and management’s expectations of future conditions. That estimate is updated as additional information becomes available. Uncollectible amounts are charged against the allowance account. The Company’s allowance for uncollectible accounts receivable is based on management’s assessment of the collectability of assets pooled together with similar risk characteristics.

Fixed Assets

The Company’s fixed assets are recorded at cost and depreciated using the straight-line method generally between 3 and 39 years. Expenditures for major renewals and betterments that extend the useful lives of fixed assets are capitalized to fixed assets. Repairs and replacements of minor items of property are charged to period operating expense as incurred. The cost of fixed assets in service and under construction includes internal and external costs necessary to bring an asset to the condition and location necessary for its intended use. Grants received for the construction of assets

are recognized as a reduction of the cost of fixed assets, a subsequent reduction of depreciation expense over the useful lives of those assets within the income statement and as an investing cash flow in the statements of cash flows.

The Company capitalizes certain costs of developing and purchasing new information systems in accordance with internal use software guidance. These costs are depreciated over the useful life of the information system. The Company also incurs implementation costs associated with cloud computing arrangements. If these implementation costs do not meet internal use software capitalization guidance, the implementation costs are recorded as prepaid assets and expensed through operating expense over the life of the arrangement.

The fair value of a liability for an asset retirement obligation is recorded in the period in which it is incurred if a reasonable estimate of fair value can be made. In periods subsequent to initial measurement, period-to-period changes in the liability for an asset retirement obligation resulting from the passage of time and revisions to either the timing or the amount of the original estimate of undiscounted cash flows are recognized. The increase in the carrying value of the associated long-lived asset is depreciated over the corresponding estimated economic life. Other liabilities within the consolidated balance sheets include accruals of $10.3 million and $4.2 million as of December 31, 2021 and 2020, respectively, for estimated costs associated with asset retirement obligations.

In accordance with the authoritative guidance for accounting for the impairment or disposal of long-lived assets, the Company evaluates the carrying value of long-lived assets, including property and equipment, in relation to the operating performance and future undiscounted cash flows of the underlying business whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An impairment loss exists when estimated undiscounted cash flows attributable to an asset are less than its carrying amount. If an asset is deemed to be impaired, the amount of the impairment loss recognized represents the asset’s carrying value in excess of its estimated fair value, based on management’s assumptions and projections.

Management’s estimate of the future cash flows attributable to its long-lived assets and the fair value of its businesses involve significant uncertainty. Those estimates are based on management’s assumptions of future results, growth trends and industry conditions. If those estimates are not met, the Company could have additional impairment charges in the future, and the amounts may be material.

The Company did not record any fixed asset impairments for the years ended December 31, 2021, 2020 or 2019.

Other Intangible Assets

Intangible assets resulting from the acquisitions of entities accounted for using the purchase method of accounting are estimated by management based on the fair value of the assets acquired. These include acquired customer relationships and tradename. The process for estimating the fair values of identifiable intangible assets requires the use of significant estimates and assumptions by management, including revenue growth rates, customer attrition rates, royalty rates, discount rates and projected future cash flows.

Customer relationships and tradenames are amortized over their estimated lives ranging from 5-13 years and 6-15 years, respectively, based on the pattern in which economic benefit of the customer relationship is estimated to be realized.

Noncontrolling Interests

The noncontrolling interests in the accompanying consolidated balance sheets reflect the original investments made by minority stockholders in certain subsidiaries of the Company. Noncontrolling interests acquired in a business combination are initially recorded at fair value. Subsequently, noncontrolling interests are adjusted for additional capital

contributions, the minority stockholder’s proportional share of the earnings or losses, distributions to the minority stockholders and repurchases, by the Company, of such interests.

Revenue Recognition

The Company earns revenue from its telecommunication and renewable energy operations. The Company recognizes revenue through the following steps:

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Identification of the contract with a customer

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Identification of the performance obligations in the contract

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Determination of the transaction price

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Allocation of the transaction price to the performance obligations in the contract

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Recognize revenue when, or as, the Company satisfies performance obligations

Revenue Recognition- Communications Services

Communication services consists of Mobility, Fixed, and Carrier Services revenue. Mobility revenue consists of revenue generated from providing mobile communication services to consumer and business subscribers over the Company’s wireless networks and the sale of related equipment to its subscribers. The service revenue generated is

recognized over time as the service is rendered and revenues from equipment are recognized when the equipment is delivered to the customer.

Management considers transactions where customers purchase subsidized or discounted equipment and mobile voice or data services to be a single contract. For these contracts, the transaction price is allocated to the equipment and mobile service based on their standalone selling prices. The standalone selling price is based on the amount the Company charges for the equipment and service to similar customers. Equipment revenue is recognized when the equipment is delivered to customers and service revenue is recognized as service is rendered.

Fixed Communications revenue is primarily generated by fixed data and voice telecommunications services to both business and consumer subscribers. The service includes consumer broadband and high speed data solutions for businesses, as well as video services. Revenue from these contracts is recognized over time as the service is rendered to the customer. Fixed revenue also includes revenue from government grants and is recognized in accordance with the grant terms and conditions.

Carrier Services revenue is generated from providing services to other telecommunications providers such as wholesale roaming, the leasing of critical network infrastructure such as tower and transport facilities, site maintenance, and international long-distance services. Revenue is recognized over time as the service is rendered to the customer.

The Company also has certain wholesale roaming agreements that contain stand ready performance obligations and management allocates transaction value to performance obligations based on the standalone selling price. The standalone selling price is the estimated price the Company would charge for the good or service with similar customers in similar circumstances. Management determined the performance obligations were obligations to make the service continuously available and will recognize revenue evenly over the service period.

In July 2019 the Company entered into a Network Build and Maintenance Agreement (the “FirstNet Agreement”) with AT&T Mobility, LLC (“AT&T”) to build a portion of AT&T’s network for the First Responder Network Authority (“FirstNet”) as well as a commercial wireless network in or near the Company’s current operating area in the Southwestern United States (the “FirstNet Transaction”). The FirstNet transaction includes construction and service performance obligations. The Company allocated the transaction price of the FirstNet Agreement to each performance obligation based on the relative standalone selling price of each performance obligation in the contract. The standalone selling price is the estimated price the Company would charge for the good or service in a separate transaction with similar customers in similar circumstances. The construction revenue is recognized when the assets are delivered and the service revenue is recognized over time as the service is rendered to the customer.

The Company’s Mobility, Carrier Services, and Fixed communications contracts occasionally include promotional discounts such as free service periods or discounted products. If a contract contains a substantive termination penalty, the transaction price is allocated to the performance obligations based on a standalone selling price resulting in accelerated revenue recognition and the establishment of a contract asset that will be recognized over the life of the contract. If a contract includes a promotional discount but no substantive termination penalty the discount is recorded in the promotional period and no contract asset is established. The Company’s customers also have the option to purchase additional telecommunication services. Generally, these options are not performance obligations and are excluded from the transaction price because they do not provide the customers with a material right.

The Company may charge upfront fees for activation and installation of some of its products and services. These fees are reviewed to determine if they represent a separate performance obligation. If they do not represent a separate performance obligation, the transaction price associated with them is recognized over the life of the customer. If the fees represent a performance obligation they are recognized when delivered to the customer based on the standalone selling price.

The Company has certain wholesale roaming agreements that contain stand ready performance obligations and management allocates transaction value to performance obligations based on the standalone selling price. The standalone selling price is the estimated price the Company would charge for the good or service with similar customers in similar

circumstances. Management determined the performance obligations were obligations to make the service continuously available and will recognize revenue evenly over the service period.

The Company also enters into build and maintenance agreements with its customers. The agreements include construction and service performance obligations. The Company allocates the transaction price to each performance obligation based on the relative standalone selling price of each performance obligation in the contract. The standalone selling price is the estimated price the Company would charge for the good or service in a separate transaction with similar customers in similar circumstances.

Sales and use and state excise taxes collected from customers that are remitted to the governmental authorities are reported on a net basis and excluded from the revenues and sales.

Revenue Recognition- Construction

Construction revenue is generated from construction services provided to telecommunications customers. The Company recognizes revenue at a point in time when the product is delivered to the customer.

Revenue Recognition-Other Revenue

Other revenue consists of renewable energy revenue and Managed Services revenue. Renewable energy revenue includes the generation of power through Power Purchase Agreements (“PPAs”) from the Company’s solar plants in India. The Company recognizes revenue at contractual PPA rates over time as electricity is generated and simultaneously consumed by the customer. Managed services revenue is generated from information technology services such as network, application, infrastructure, and hosting services to both business and consumer customers. The revenue is recognized as the service is delivered to customers.

Contract Assets and Liabilities

The Company recognizes contract assets and liabilities on its balance sheet. Contract assets represent unbilled amounts typically resulting from consumer mobility contracts with both a multiyear service period and a promotional discount. In these contracts the revenue recognized exceeds the amount billed to the customer. The current portion of the contract asset is recorded in prepayments and other current assets and the noncurrent portion is included in other assets on the Company’s balance sheet.

Contract liabilities consist of advance payments and billings in excess of revenue recognized. Retail revenue for postpaid customers is generally billed one month in advance and recognized over the period that the corresponding service is rendered to customers. To the extent the service is not provided by the reporting date the amount is recognized as a contract liability. Prepaid service, including mobile voice and data services, sold to customers is recorded as deferred revenue prior to the commencement of services. The Company also records deferred revenue associated with prepaid service agreements to provide data capacity to customers. A contract liability is established and recognized as revenue on a straight-line basis over the life of the agreement. The current portion of contract liabilities is recorded in advanced payments and deposits and the noncurrent portion is included in other liabilities on the Company’s balance sheets.

Leases

The Company determines if an agreement is a lease at inception. Operating leases are included in right-of-use (“ROU”) assets, current portion of operating lease liabilities, and operating lease liabilities in the Company’s consolidated balance sheets. Finance leases are included in property and equipment in the Company’s consolidated balance sheets.

ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. The present value is calculated using the Company’s incremental borrowing rate based on the information available at the commencement date, as the Company’s leases do not contain an implicit rate. The Company utilizes assumptions based on its existing borrowing facilities and other market specific data to determine its incremental borrowing rate. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. The Company’s lease terms may include renewal options to extend the lease. The Company includes renewal options that are reasonably certain to be exercised in the initial lease term. When determining whether a renewal option is reasonably certain to be exercised, the Company considers several factors, including the present and anticipated future needs of its customers being serviced by the asset. Lease expense is recognized on a straight-line basis over the lease term. The Company does not separate non-lease components from lease components.

Accounting for Grants

The Company receives funding from the US Government and its agencies under stimulus, the Universal Service Fund (“USF”), and other programs. These funding programs are generally designed to fund telecommunications operations and infrastructure expansion into rural or underserved areas. The funding programs are evaluated to determine if they represent funding related to revenue, capital expenditures or operating activities. Funding for revenue and operating activities are recorded as revenue or contra expense in the Company’s consolidated income statement as the services are provided. Funding for capital expenditures is recorded as a reduction to property, plant and equipment on the Company’s consolidated balance sheets and a future reduction in depreciation expense in the consolidated income statements. Government funding related to revenue and operations are recorded as operating cash inflows and grants for capital expenditures are recorded as investing cash inflows.

The Company monitors government funding for grant requirements to ensure that conditions related to grants have been met and there is reasonable assurance that the Company will be able to retain the grant proceeds and to ensure that any contingencies that may arise from not meeting the conditions are appropriately recognized. See Note 9, Government Support and Spectrum Programs.

Credit Concentrations and Significant Customers

Historically, the Company has been dependent on a limited amount of customers for its wholesale roaming business. For the year ended December 31, 2021, no individual customer accounted for more than 10% of consolidated revenue in 2021. For each of the years ended December 31, 2020 and December 31, 2019, one customer accounted for 10% and 11% of the Company’s consolidated revenue, respectively.

As of December 31, 2021, no customers accounted for more than 10% of the Company’s consolidated accounts receivable. As of December 31, 2020, two customer accounted for more than 10% of the Company’s consolidated accounts receivable.

Employee Benefit Plans

The Company sponsors pension and other postretirement benefit plans for employees of certain subsidiaries. Net periodic pension expense is recognized in the Company’s income statement. The service cost component of net periodic pension expense is presented with other employee compensation within income from operations. Other components of net periodic pension expense, such as interest cost, expected return on plan assets, and amortization of actuarial gains and losses are presented in other income. The Company recognizes a pension or other postretirement benefit plan’s funded status as either an asset or liability in its consolidated balance sheet. Actuarial gains and losses are deferred, reported as a component of other comprehensive income, and amortized through net periodic pension expense in subsequent periods.

Net Income (Loss) Per Share

The following table reconciles the numerator and denominator in the computations of basic and diluted earnings per share (in thousands):


	Year ended December 31,
	2021		2020		2019
Numerator:
Net Income (loss)	$	(20,809)	$	(708)	$	1,967
Net income attributable to noncontrolling interests		(1,299)		(13,414)		(12,773)
Net loss attributable to ATN International, Inc. stockholders- Basic		(22,108)		(14,122)		(10,806)
Less: Preferred dividends		(1,962)		—		—
Net loss attributable to ATN International, Inc. stockholders- Diluted	$	(24,070)	$	(14,122)	$	(10,806)

Denominator:
Weighted-average shares outstanding- Basic		15,867		15,923		15,983
Effective of dilutive securities:
Stock options, restricted stock units and performance stock units		—		—		—
Weighted-average shares outstanding- Diluted		15,867		15,923		15,983

Stock-Based Compensation

The Company applies the fair value recognition provision of ASU 2018-07, “Compensation—Stock Compensation (Topic 718)” and is expensing the fair value of all stock-based compensation over the vesting periods of such awards within selling, general and administrative expenses in its Income Statement.

Recent Accounting Pronouncements

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” and subsequently issued related updates,” (“ASU 2016-02”) which provide comprehensive lease accounting guidance. The standard requires entities to recognize lease assets and liabilities on the balance sheet as well as disclosure of key information about leasing arrangements. ASU 2016-02 became effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company adopted ASC 2016-02 on January 1, 2019 utilizing the optional transition method with a cumulative adjustment on the date of adoption and not adjusting prior periods. Refer to Note 4 of the Condensed Consolidated Financial Statements.

In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815) – Targeted Improvements to Accounting for Hedging Activities,” (“ASU 2017-12”). The standard: (a) expands and refines hedge accounting for both financial and non-financial risk components, (b) aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and (c) includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15,

2018. The Company adopted ASU 2017-12 on January 1, 2019. There was not a material impact to the Company’s Consolidated Financial Statements upon adoption.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” (“ASU 2016-13”). ASU 2016-13 requires entities to use a new forward-looking, expected loss model to estimate credit losses. It also requires additional disclosure relating to the credit quality of trade and other receivables, including information relating to management’s estimate of credit allowances. The Company adopted ASU 2016-13 using the modified retrospective approach on its January 1, 2020 effective date.

In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes,” which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The Company adopted ASU 2019-12 effective January 1, 2021. The adoption of ASU 2019-12 did not have a material impact on the Company’s consolidated financial statements and related disclosures.

In October 2021, the FASB issued ASC 2021-08, “Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers,” (ASU 2021-08). ASU 2021-08 provides guidance for recognizing and measuring contract assets and contract liabilities acquired in a business combination. Under the standard revenue contracts are accounted for consistent with how they were recognized and measured in the acquiree’s financial statements. This is a change from current standards which require contract asset and liabilities to be recognized at fair value. The Company prospectively adopted this standard in the fourth quarter of 2021 and will apply it to all acquisitions during the year ended December 31, 2021. The adoption will generally result in the Company recognizing larger contract liabilities in business combinations. Refer to Note 5.