ATN International, Inc.

We and our subsidiaries are subject to certain regulatory and legal proceedings and other claims arising in the ordinary course of business, some of which involve claims for damages and taxes that are substantial in amount. Historically, our subsidiary, OneGY, has been subject to other long-standing litigation proceedings and disputes in Guyana that have not yet been resolved. It has been OneGY’s practice to make payments of undisputed spectrum and license fees as amounts are invoiced by the Telecommunications Authority (“TA”) and to accrue for a reasonable determination of any amounts that are disputed or not invoiced by the TA. We believe that, except for the items discussed below, for which we are currently unable to predict the final outcome, the disposition of matters currently pending, individually or in the aggregate, will not have a material adverse effect on our financial position or results of operations.

Since 2006, the National Frequency Management Unit (now the TA, or the “NFMU”) and OneGY have been engaged in discussions regarding the amount of and methodology for calculation of spectrum fees payable by OneGY in Guyana. Since that time, OneGY has made payments of undisputed spectrum, license and other fees when invoiced by the NFMU, and to its successor, the TA. OneGY continues to dispute in good faith the methodology used for calculation and has requested further clarification on the subject of a revised spectrum fee methodology from TA.

OneGY has filed several lawsuits in the High Court of Guyana (the “High Court”) asserting that, despite its denials, Digicel is engaged in international bypass in violation of OneGY’s exclusive license rights, the interconnection agreement between the parties, and the laws of Guyana. Digicel filed counterclaims alleging that OneGY has violated the terms of the interconnection agreement and Guyana laws. These suits, filed in 2010 and 2012, are currently pending in the Court of Appeals in Guyana; however, as of the date of this Report, we cannot accurately predict when the consolidated suit will reach a court of final determination.

OneGY is also involved in several legal claims regarding its tax filings with the Guyana Revenue Authority (the “GRA”) dating back to 1991 regarding the deductibility of intercompany advisory fees as well as other tax assessments. OneGY has maintained that it has no unpaid corporation tax due to the GRA and that any liability OneGY might be found to have with respect to the disputed tax assessments would be offset in part by the amounts claimed with respect to rights ATN has pursuant to its agreement with the government of Guyana. OneGY’s position has been upheld by various High Court rulings made in its favor, and while all matters have been appealed by the GRA, as of the date of this Report, only one remained pending for determination by the High Court.

In February 2020, our subsidiary, Alaska Communications subsidiary received a draft audit report from the Universal Service Administrative Company (“USAC”) in connection with USAC’s inquiry into Alaska Communications’ funding requests under the RHC Program for certain customers for the time period of July 2012 through June 2017. Alaska Communications also received a Letter of Inquiry on March 18, 2018, and subsequent follow up information requests, from the FCC Enforcement Bureau requesting historical information regarding Alaska Communications’ participation in the FCC’s RHC Program. On May 8, 2024, we entered into a Consent Decree with the FCC Enforcement Bureau, regarding both the USAC and FCC Enforcement Bureau’s investigation and agreed to (i) pay a settlement amount of approximately $6.3 million, and (ii) enter into a three-year compliance agreement in connection with Alaska Communication’s continued participation in the RHC Program. As of the date of this Report, we believe that we can comply with all of the terms of the compliance agreement. As of December 31, 2025, the Company had paid a settlement amount of $6.3 million consisting of a $5.3 million cash payment and the $1.0 million forgiveness of certain receivables. This settlement will not impact the statement of operations in future periods.

The Regulatory Authority of Bermuda (the “RA”) is the primary regulator of our operations in Bermuda. On August 28, 2025, the RA completed a market review and determined that we have significant market power in certain broadband and mobile services. In connection therewith, the RA assessed, and we have initiated an appeal of, a series of ex-ante remedies that include wholesale obligations, price caps, and reporting obligations in addition to the ex post

competition rules that generally apply. In October 2025, we were able to obtain a stay of implementation of these ex-ante remedies pending the Bermuda Supreme Court’s review of its appeal of the RA’s market review determination. The ex-ante remedies are burdensome and, if implemented, will require financial, operational, legal and regulatory resources to be allocated to ensure compliance.

With respect to all of the foregoing unresolved matters, we believe that some adverse outcome is probable and have accordingly accrued $16.1 million as of December 31, 2025 for these and other potential liabilities arising in various claims, legal actions and regulatory proceedings arising in the ordinary course of business. We also face contingencies that are reasonably possible to occur that cannot currently be estimated. It is our policy to expense costs associated with loss contingencies, including any related legal fees, as they are incurred.