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ATN International, Inc.

For the period ended Dec 31, 2025. Filed Mar 16, 2026.

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FY2025 · Filed Mar 16, 2026

ATNI$29.93+4.2%Stored close · as of Nov 10, 2026

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Contents

Item 15. Exhibits, Financial Statement Schedules

(a)The following documents are filed as part of this Report:
(1)Financial Statements. See Index to Consolidated Financial Statements, which appears on page F-1 hereof. The financial statements listed in the accompanying Index to Consolidated Financial Statements are filed herewith in response to this Item 15.
(2)Schedule II. Valuation and Qualifying Accounts for the years ended December 31, 2023, 2024, and 2025 which appears on page F-66 hereof.
(3)Exhibits. The exhibits listed below are filed herewith in response to this Item 15.

EXHIBIT INDEX

to Form 10-K for the Year Ended December 31, 2025

3.1​Restated Certificate of Incorporation of ATN International, Inc. (incorporated by reference to Exhibit 4.1 to the Company’s Registration Statement on Form S-8 (File No. 333-62416) filed on June 6, 2001).
3.2​Certificate of Amendment to the Restated Certificate of Incorporation of ATN International, Inc., as filed with the Delaware Secretary of State on August 14, 2006 (incorporated by reference to Exhibit 3.2 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) for the quarterly period ended June 30, 2006 filed on August 14, 2006).
3.3​Certificate of Amendment to the Company’s Restated Certificate of Incorporation, filed June 10, 2016 and effective June 21, 2016 (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on June 27, 2016).
3.4Amended and Restated By-Laws, effective as of March 8, 2023 (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on March 14, 2023).
4.1​Description of ATN International, Inc. securities registered pursuant to Section 12 of the Exchange Act (incorporated by reference to Exhibit 4.1 to the Company’s Annual Report on Form 10 K (File No. 001 12593) for the year ended December 31, 2019 filed on March 2, 2020).
10.1ⱡATN International, Inc. 2008 Equity Incentive Plan, as amended and restated (incorporated by reference to Appendix C of the Definitive Proxy Statement on Schedule 14A (File No. 001-12593) filed on May 2, 2011).
10.2ⱡDeferred Compensation Plan for Select Employees of ATN International, Inc. (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on January 6, 2009).
10.3ⱡForm of Restricted Stock Unit Agreement under the 2008 Equity Incentive Plan (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) filed on May 9, 2018).
10.4ⱡForm of Restricted Stock Unit Award Grant Notice and Restricted Stock Unit Agreement under the 2008 Equity Incentive Plan (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on March 15, 2021).
10.5ⱡForm of Performance Stock Unit Award Grant Notice and Performance Stock Unit Agreement (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on March 15, 2021).
10.6ⱡForm of Severance Agreement with Non-CEO Executive Officers (incorporated by reference to Exhibit 10.11 to the Company’s Annual Report on Form 10-K (File No. 001-12593) filed on March 15, 2023).
10.7ⱡForm of Severance Agreement with Chief Executive Officer (incorporated by reference to Exhibit 10.12 to the Company’s Annual Report on Form 10-K (File No. 001-12593) filed on March 15, 2023).
10.8​Credit Agreement, dated as of March 26, 2020, among Commnet Finance, LLC, as Borrower, Commnet Wireless, LLC, as Originator and Servicer, ATN International, Inc., as Limited Guarantor, CoBank, ACB, as Administrative Agent, Lead Arranger, and Sole Bookrunner, and the Lenders party thereto (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on April 1, 2020).
10.9​Consent, Release and Confirmation Agreement, entered into as of March 26, 2020, among ATN International, Inc., as Borrower, each of the subsidiaries of ATN International, Inc., identified as guarantors on the signature pages thereto, CoBank, ACB, as Administrative Agent, and each of the financial institutions identified as a Lender on the signature pages thereto (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on April 1, 2020).
10.10​Amendment and Confirmation Agreement, effective as of December 22, 2022 , among Commnet Finance, LLC, as Borrower, Commnet Wireless, LLC, as Originator and Servicer, ATN International, Inc., as Limited Guarantor, CoBank, ACB, as Administrative Agent, Lead Arranger, and Sole Bookrunner, and the Lenders party thereto (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on December 30, 2022).
10.11​Agreement between the Government of the Co-Operative Republic of Guyana and Atlantic Tele- Network, Inc., dated June 18, 1990 (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q (File No. 001-12593) for the quarterly period ended March 31, 2006 filed on May 15, 2006).
10.12​Amendment to the Agreement between the Government of the Co-Operative Republic of Guyana and ATN International, Inc., dated November 2, 2012 (incorporated by reference to Exhibit 10.20 to the Company’s Annual Report on Form 10-K (File No. 001-12593) for the year ended December 31, 2012 filed on March 18, 2013).
10.13​Loan Agreement, dated as of July 1, 2016, by and among ATN VI Holdings, LLC, Caribbean Asset Holdings LLC, and Rural Telephone Finance Cooperative (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) for the quarterly period ended June 30, 2016 filed on August 9, 2016).
10.14​Amendment to Loan Agreement dated May 5, 2022 between ATN VI Holdings, LLC and Rural Telephone Finance Cooperative (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (file No. 001-12593) for the quarterly period ended March 31, 2022 filed on May 10, 2022).
10.15​Second Amendment to Loan Agreement, by and among ATN VI Holdings, LLC, Caribbean Asset Holdings, LLC, and National Cooperative Services Corporation dated November 5, 2025 (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (file No.001-12593) for the quarterly period ended September 30, 2025 filed on November 10, 2025).
10.16#Network Build and Maintenance Agreement, dated as of July 31, 2019, by and between Commnet Wireless, LLC, a wholly owned subsidiary of ATN International, Inc., and AT&T Mobility LLC (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) for the quarterly period ended September 30, 2019 filed on November 8, 2019).
10.17#First Amendment to Network Build and Maintenance Agreement dated as of August 6, 2020 and effective as of July 1, 2020 by and between Commnet Wireless, LLC and AT&T Mobility LLC (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) filed on November 4, 2020).
10.18#Second Amendment to Network Build and Maintenance Agreement dated as of May 4, 2021 and effective as of January 1, 2021 by and between Commnet Wireless, LLC and AT&T Mobility LLC (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) filed on May 10, 2021).
10.19#Third Amendment to Network Build and Maintenance Agreement dated as of August 4, 2022 and effective as of January 1, 2022 by and between Commnet Wireless, LLC and AT&T Mobility LLC , incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q (file No. 001-12593) for the quarterly period ended June 30, 2022 filed on August 8, 2022.
10.20#Fourth Amendment to Network Build and Maintenance Agreement dated as of December 21, 2023 and effective as of September 30, 2023, by and between Commnet Wireless, LLC and AT&T Mobility LLC (incorporated by reference to Exhibit 10.46 to the Company’s Annual Report on Form 10-K (file No. 001-12593) for the year ended December 31, 2023 filed on March 15, 2024).
10.21​Fifth Amendment to Network Build and Maintenance Agreement dated as of March 4, 2025 and effective as of January 1, 2025, by and between Commnet Wireless, LLC and AT&T Mobility LLC (incorporated by reference to Exhibit 10.36 to the Company’s Annual Report on Form 10-K (file No. 001-12593) for the year ended December 31, 2024 filed on March 17, 2025).
10.22​Amended and Restated Limited Liability Company Agreement of ALSK Holdings, dated as of July 21, 2021 by and among ALSK Holdings, the Company, F3C IV, certain affiliates of F3C IV, and certain other institutional investors (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on July 22, 2021).
10.23*​Third Amended and Restated Limited Liability Company Agreement of ALSK Holdings, dated as of March 13, 2026 by and among ALSK Holdings, the Company, F3C IV, certain affiliates of F3C IV, and certain other institutional investors.
10.24​Credit Agreement, dated as of August 29, 2024 among Alaska Communications Systems Group, Inc., as borrower (the “Borrower”), and its holding company, Alaska Management, Inc. (“Holdings”), and certain of Holdings’ direct and indirect subsidiaries, as guarantors, Bank of America, N.A., as administrative agent, an L/C issuer and swing line lender, Fifth Third Bank, National Association, as an L/C issuer, the lenders party thereto, and BofA Securities, Inc, Fifth Third Bank, National Association, BMO Bank NA, The Huntington Bank National Association, and MUFG Bank Ltd., as joint lead arrangers, and BofA Securities, Inc, Fifth Third Bank, National Association, and MUFG Union Bank, N.A., as joint bookrunners, and Fifth Third Bank, National Association, and MUFG Bank Ltd., as co-syndication agents, and BMO Bank NA, The Huntington Bank National Association and CoBank ACB, as co-documentation agents, incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (file No. 001-12593) filed on August 30, 2024.
10.25ⱡ​ATN International, Inc. 2023 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on June 13, 2023).
10.26ⱡ​Form of Restricted Stock Unit Award Grant Notice and Restricted Stock Unit Agreement under the 2023 Equity Incentive Plan (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on June 13, 2023).
10.27ⱡ​Form of Performance Stock Unit Award Grant Notice and Performance Stock Unit Agreement under the 2023 Equity Incentive Plan (incorporated by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on June 13, 2023).
10.28​Credit Agreement, dated as of July 13, 2023, among ATN International, Inc. as Borrower, CoBank, ACB, as Administrative Agent, Fifth Third Bank, N.A., MUFG Bank, Ltd. and the Guarantors party thereto (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on July 17, 2023).
10.29​Carrier Managed Services Master Agreement, dated as of May 10, 2023, between Commnet Wireless LLC, a wholly owned subsidiary of ATN International, Inc., and Cellco Partnership d/b/a Verizon Wireless (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) filed on August 9, 2023).
10.30ⱡ​Form of Notice of Grant of Restricted Stock and Restricted Stock Agreement under 2023 Equity Incentive Plan (Non-Employee Directors) (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) filed on August 9, 2023).
10.31ⱡ​Offer Letter and Restricted Covenant Agreement by and between ATN International, Inc. and Carlos Doglioli, dated November 13, 2023 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on November 16, 2023).
10.32​Third Amendment and Confirmation Agreement, effective as of December 19, 2023, among Commnet Finance, LLC, as Borrower, Commnet Wireless, LLC, as Originator and Servicer, ATN International, Inc., as Limited Guarantor, CoBank, ACB, as Administrative Agent and the Lenders party thereto (incorporated by reference to Exhibit 10.45 to the Company’s Annual Report on Form 10-K (File No. 001-12593) for the year ended December 31, 2023 filed on March 15, 2024).
10.33​Joinder, Consent, First Amendment and Reaffirmation Agreement, dated July 10, 2024, among ATN International, Inc as Borrower, SWC Telesolutions, Inc., ATN International Telecom Group, LLC, CoBank, ACB, as Administrative Agent, Fifth Third Bank, N.A., MUFG Bank, Ltd. and the Guarantors party thereto, incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (file No. 001-12593) filed on August 9, 2024.
10.34#​Purchase and Sale Agreement, dated February 11, 2026, by and among Commnet Wireless, LLC, Alloy, Inc., Arizona Nevada Tower Company, LLC, Commnet Four Corners, LLC, Commnet of Arizona, LLC, Commnet of Nevada, LLC, Excomm, LLC, Mora Valley Wireless, LLC, and EIP Holdings IV, LLC (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on February 13, 2026).
10.35​Consent Agreement, dated as of February 11, 2026, by and among ATN International, Inc., CoBank, ACB, as Administrative Agent, and the Lenders and Voting Participants (constituting Required Lenders) parties thereto (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on February 13, 2026).
19*Insider Trading Policy.
21*Subsidiaries of ATN International, Inc.
23.1*Consent of Independent Registered Public Accounting Firm—PricewaterhouseCoopers LLP.
31.1*Certification of Principal Executive Officer pursuant to Rule 13a- 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Rule 302 of the Sarbanes-Oxley Act of 2002.
31.2*Certification of Principal Financial Officer pursuant to Rule 13a- 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Rule 302 of the Sarbanes-Oxley Act of 2002.
32.1**Certification of Principal Executive Officer pursuant to 18 USC. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2**Certification of Principal Financial Officer pursuant to 18 USC. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
97.1​ATN International, Inc. Executive Compensation Recoupment Policy (incorporated by reference to Exhibit 97.1 to the Company’s Annual Report on Form 10 K (File No. 001 12593) for the year ended December 31, 2023 filed on March 15, 2024).
101.INS​Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH​Inline XBRL Taxonomy Extension Schema Document
101.CAL​Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF​Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB​Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE​Inline XBRL Taxonomy Extension Presentation Linkbase Document
104​Cover Page Interactive Data file (formatted as Inline XBRL and embedded within Exhibit 101).
ⱡManagement contract or compensatory plan or arrangement.
*Filed herewith.
**The certifications furnished in Exhibit 32.1 and Exhibit 32.2 hereto are deemed to accompany this Report and will not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, except to the extent that the company specifically incorporates it by reference.

Portions of this exhibit (indicated by asterisks) have been omitted in accordance with the rules of the Securities and Exchange Commission.

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