ATNI / ATN International, Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

ATN International, Inc.
US ˙ NasdaqGS ˙ US00215F1075

Mga Batayang Estadistika
LEI 54930013NP7VEU877V56
CIK 879585
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to ATN International, Inc.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
August 15, 2025 S-3

As filed with the Securities and Exchange Commission on August 15, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ATN International, Inc. (Exact name of re

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on August 15, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 15, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 ATN International, Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Ini

August 11, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN

August 8, 2025 EX-99.1

ATN Reports Second Quarter 2025 Results; Reaffirms 2025 Outlook

Exhibit 99.1 ATN Reports Second Quarter 2025 Results; Reaffirms 2025 Outlook Second Quarter 2025 vs. Second Quarter 2024 Financial Highlights · Expanded high-speed broadband homes passed by 8% · Grew total high-speed subscribers by 1% · Second-quarter revenues declined 1% to $181.3 million · Second quarter operating income decreased to $0.2 million · Second quarter net loss was $(7.0) million, or

August 8, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 30, 2025 ATN INTERNATIONAL,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 30, 2025 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

June 20, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 17, 2025 ATN INTERNATIONAL,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 17, 2025 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

May 12, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN

May 1, 2025 EX-99.1

ATN Reports First Quarter 2025 Results Reaffirms 2025 Outlook

Exhibit 99.1 ATN Reports First Quarter 2025 Results Reaffirms 2025 Outlook First Quarter 2025 vs. First Quarter 2024 Financial Highlights · Expanded high-speed broadband homes passed by 11% · Grew total high-speed subscribers by 2% · Revenues declined 4% to $179.3 million · Operating income decreased to $2.7 million · Net loss was $(8.9) million, or $(0.69) per share · Adjusted EBITDA1 increased 2

May 1, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 30, 2025 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 30, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

April 30, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.        )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.        ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

March 17, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-12593

March 17, 2025 EX-21

Subsidiaries of ATN International, Inc.

Exhibit 21 SUBSIDIARIES OF ATN INTERNATIONAL, INC. Jurisdiction of Incorporation Other name(s) under which entity does business Alloy, Inc. (1) Delaware Commnet, Commnet Broadband Choice Wireless, Ethos, Sacred Wind, ALSK Holdings, LLC. (5) Delaware Alaska Communications Atlantic Tele-Network, LLC (6) Delaware ATN International, WeSolve ATN Overseas Holdings, Ltd. Bermuda ATN Overseas Holdings, Lt

March 17, 2025 EX-10.36

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.

Exhibit 10.36 CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH “[***]”. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS (I) NOT MATERIAL AND (II) WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF DISCLOSED. Fifth Amendment to the Network Build and Maintenance Agreement Between AT&T Mobility, LLC and Commnet Wireless, LLC This Fifth

March 17, 2025 EX-19

Insider Trading Policy.

Exhibit 19 December 2023 Insider Trading and Anti-Hedging Policy for ATN INTERNATIONAL, INC.

March 5, 2025 EX-99.1

ATN Reports Fourth Quarter and Full Year 2024 Results; Provides 2025 Outlook

Exhibit 99.1 ATN Reports Fourth Quarter and Full Year 2024 Results; Provides 2025 Outlook Fourth Quarter and Full Year 2024 Financial Highlights · Grew total high-speed subscribers by 3% · Expanded high-speed broadband homes passed by 16% · Fourth-quarter revenues declined 9% to $180.5 million year over year; Full-year revenues declined 4% to $729.1 million, impacted by the conclusion of the Emerg

March 5, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 4, 2025 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

November 12, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593

October 30, 2024 EX-99.1

ATN Reports Third Quarter 2024 Results; Updates Full-Year 2024 Outlook

Exhibit 99.1 ATN Reports Third Quarter 2024 Results; Updates Full-Year 2024 Outlook “First-to-Fiber” and “Glass & SteelTM” Strategies Yield Year-Over-Year Increases in High-Speed Data Subscriber and Network Reach Metrics · Total high-speed broadband subscribers increased 6% year-over-year · Broadband homes passed by high-speed data services expanded 20% year-over-year · Capital expenditures were $

October 30, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 29, 2024 ATN INTERNATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 29, 2024 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

August 30, 2024 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 29, 2024 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer ju

August 30, 2024 EX-10.1

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.

Exhibit 10.1 Execution Version Published CUSIP Numbers Deal: 01167TAA1 Revolver: 01167TAB9 Term Loan: 01167TAC7 Credit Agreement among Alaska Management, Inc., as Holdings, Alaska Communications Systems Group, Inc., as the Borrower, the Guarantors from time to time party hereto, the Lenders from time to time party hereto, Bank of America, N.A., as Administrative Agent, an L/C Issuer and Swing Line

August 30, 2024 EX-99.1

Alaska Communications Secures $390 Million Financing to Enhance and Expand Statewide Fiber Infrastructure

Exhibit 99.1 Alaska Communications Secures $390 Million Financing to Enhance and Expand Statewide Fiber Infrastructure August 29, 2024 – Alaska Communications, the premier provider of mission-critical and life-critical communications infrastructure in Alaska, announced a major financial advancement with the establishment of a new five-year $390 million senior secured credit facility. The funds wil

August 9, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN

August 9, 2024 EX-10.1

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.

Exhibit 10.1 Execution Version JOINDER, CONSENT, FIRST AMENDMENT AND REAFFIRMATION AGREEMENT This JOINDER, CONSENT, FIRST AMENDMENT AND REAFFIRMATION AGREEMENT (this “Agreement”) is made, entered into and effective as of July 10, 2024, by and among ATN INTERNATIONAL, INC., a Delaware corporation (the “Borrower”), SWC TELESOLUTIONS, INC., a New Mexico corporation (“SWC”), ATN INTERNATIONAL TELECOM

July 29, 2024 CORRESP

* * * *

500 Cummings Center Beverly, MA 01915 1.978.619.1300 www.atni.com July 29, 2024 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: ATN International, Inc. Form 10-K for the fiscal year ended December 31, 2023 File No. 001-12593 To Whom it May Concern: On behalf of ATN International, Inc. (the “Company”), we submit this letter

July 29, 2024 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (MARK ONE)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (MARK ONE) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-125

July 25, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 24, 2024 ATN INTERNATIONAL,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 24, 2024 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

July 25, 2024 EX-99.1

ATN Reports Second Quarter 2024 Results; Reiterates Full-Year 2024 Outlook

Exhibit 99.1 ATN Reports Second Quarter 2024 Results; Reiterates Full-Year 2024 Outlook Leveraging “First-to-Fiber” and “Glass & SteelTM” Strategic Investments to Deliver Growth in High-Speed Data Subscribers and Network Reach · Total high-speed broadband subscribers increased by 9% · Broadband homes passed by high-speed data services expanded by 22% · Capital expenditures were $61.8 million (net

June 24, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 18, 2024 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

May 10, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN

May 7, 2024 SC 13D

ATNI / ATN International, Inc. / Prior Cornelius B Jr Activist Investment

SC 13D 1 sc13d.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* ATN International, Inc. (Name of Issuer) Common Stock, par value $.01 per share (Title of Class of Securities) 00215F 107 (CUSIP Number) April 11, 2023 (Date of Event which Requires Filing of this Statement) If the filing person has pre

April 29, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

April 29, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rul

April 25, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 24, 2024 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 25, 2024 EX-99.1

For Three Months Ended March 31, 2024 and 2023

Exhibit 99.1 ATN Reports First Quarter 2024 Results; Revises Full Year 2024 Outlook “First-to-Fiber” and “Glass & SteelTM” Strategies Drive Continued Year-Over-Year Growth in High-Speed Data Subscribers and Network Reach · First quarter revenues increased 1% to $186.8 million · Total high-speed broadband subscribers increased by 12% · Broadband homes passed by high-speed data services expanded by

March 15, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-12593

March 15, 2024 EX-10.46

Fourth Amendment to Network Build and Maintenance Agreement dated as of December 21, 2023 and effective as of the 30th day of September, 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).

CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH “[***]”.

March 15, 2024 EX-97.1

ATN International, Inc. Executive Compensation Recoupment Policy

ATN INTERNATIONAL, INC. COMPENSATION RECOUPMENT POLICY I. Purpose. The Board of Directors (“Board”) of ATN International, Inc. (the “Company”), based upon the recommendation of its Compensation Committee (the “Committee”), has adopted this Compensation Recoupment Policy (this “Policy”) in order to implement a mandatory clawback policy in the event of a Restatement in compliance with the Applicable

March 15, 2024 EX-10.45

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.

Execution Version THIRD AMENDMENT AND CONFIRMATION AGREEMENT ThisTHIRDAMENDMENTANDCONFIRMATIONAGREEMENT(this “Agreement”) is entered into as of December 19, 2023, among COMMNET FINANCE, LLC, a Delaware limited liability company (“Borrower”), COMMNET WIRELESS, LLC, a Delaware limited liability company (“Commnet Wireless”), in its individual capacity, as Originator and as Servicer, ATN INTERNATIONAL, INC.

March 15, 2024 EX-21.1

Subsidiaries of ATN International, Inc.

Exhibit 21 SUBSIDIARIES OF ATN INTERNATIONAL, INC. Jurisdiction of Incorporation Other name(s) under which entity does business Alloy, Inc. (1) Delaware Commnet, Choice, Sacred Wind, Ethos GTT, Inc. (2) Guyana GTT+, GTT Fibre, MMG, ATOC One Communications, Ltd. (3) Bermuda One Communications, Logic ATN VI, Inc.(4) Delaware Viya ALSK Holdings, LLC. (5) Delaware Alaska Communications Fireminds Holdi

February 22, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 21, 2024 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

February 22, 2024 EX-99.1

ATN Reports Fourth Quarter and Full Year 2023 Results; Provides 2024 Outlook

Exhibit 99.1 ATN Reports Fourth Quarter and Full Year 2023 Results; Provides 2024 Outlook “First-to-Fiber” and “Glass & SteelTM” Strategies Drive Year-Over-Year Growth · Fourth-quarter revenues grew 4% to $199.0 million · Full-year revenues grew 5% to $762.2 million · Total high-speed broadband subscribers increased by 20% · Broadband homes passed by high-speed data services expanded by 33% · Capi

February 13, 2024 SC 13G/A

ATNI / ATN International, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0361-atninternationalinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: ATN International Inc Title of Class of Securities: Common Stock CUSIP Number: 00215F107 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to de

February 9, 2024 SC 13G/A

ATNI / ATN International, Inc. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7 )* ATN International Inc (Name of Issuer) Common Stock (Title of Class of Securities) 00215F107 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

December 14, 2023 EX-99.1

ATN International Board of Directors Expands Share Repurchase Program to $25 Million and Increases Dividend by 14%

Exhibit 99.1 News Release Contact: ATN International, Inc. December 14, 2023 Justin Benincasa Chief Financial Officer 978-619-1300 Ian Rhoades Investor Relations [email protected] ATN International Board of Directors Expands Share Repurchase Program to $25 Million and Increases Dividend by 14% BEVERLY, MA, December 14, 2023 – ATN International, Inc. (“ATN” or the “Company”) (Nasdaq: ATNI)

December 14, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 14, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

November 16, 2023 EX-10.1

Offer Letter and Restricted Covenant Agreement by and between ATN International, Inc. and Carlos Doglioli, dated November 13, 2023.

EXHIBIT 10.1 November 9, 2023 Carlos R. Doglioli 42 Upwey Road Wellesley, MA 02481 RE: Offer of Employment Dear Carlos, We are delighted to offer you a position with ATN International, Inc. (“ATN” or the “Company”). This letter confirms our offer and includes details on both the financial arrangements and the Company’s benefit programs. Our vision at ATN looks to a future where all people and comm

November 16, 2023 EX-99.1

CEO Michael Prior to Transition to Executive Chairman; COO Brad Martin to be Appointed Chief Executive Officer and Member of the Board; Justin Benincasa to Retire; Carlos Doglioli to be Named CFO

Exhibit 99.1 ATN Announces Leadership Succession Plan for 2024 November 15, 2023 CEO Michael Prior to Transition to Executive Chairman; COO Brad Martin to be Appointed Chief Executive Officer and Member of the Board; Justin Benincasa to Retire; Carlos Doglioli to be Named CFO BEVERLY, Mass., Nov. 15, 2023 (GLOBE NEWSWIRE) - ATN International, Inc. (“ATN” or the “Company”) (Nasdaq: ATNI), today ann

November 16, 2023 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 13, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

November 8, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593

October 26, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 25, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

October 26, 2023 EX-99.1

ATN Reports Third-Quarter 2023 Results; Reiterates 2023 Outlook; Provides Preliminary Outlook for 2024

Exhibit 99.1 ATN Reports Third-Quarter 2023 Results; Reiterates 2023 Outlook; Provides Preliminary Outlook for 2024 “First-to-Fiber” and “Glass & SteelTM” Strategies Drive Year Over Year Growth · Grew revenue 5% to $191.0 million · Increased total high-speed subscribers by 20% · Expanded broadband homes passed by high-speed data services by 52% · Capital expenditures were $37.2 million (net of $7.

October 6, 2023 CORRESP

October 6, 2023

October 6, 2023 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance Attn: Alexandra Barone Re: ATN International, Inc.

August 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN

August 9, 2023 EX-10.1

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)

Exhibit 10.1 CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH “[***]”. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS (I) NOT MATERIAL AND (II) INFORMATION THAT THE REGISTRANT CUSTOMARILY AND ACTUALLY TREATS AS PRIVATE OR CONFIDENTIAL. Carrier Managed Services Master Agreement Between Cellco Partnership d/b/a Verizon Wireless And Comm

August 9, 2023 EX-10.2

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)

Exhibit 10.2 ATN INTERNATIONAL, INC. Notice of Grant of Restricted Stock and Restricted Stock Agreement under the ATN International, Inc. 2023 Equity Incentive Plan Participant Name: ID: ATN International, Inc., a Delaware corporation (the “Company”), hereby grants to the Participant named above (“you”) the number of shares of Common Stock, par value $0.01 per share (the “Shares”) of the Company s

August 3, 2023 EX-FILING FEES

Calculation of Filing Fee Table

EXHIBIT 107 CALCULATION OF FILING FEE TABLE Form S-8 (Form Type) ATN International, Inc.

August 3, 2023 S-8

As filed with the Securities and Exchange Commission on August 3, 2023

As filed with the Securities and Exchange Commission on August 3, 2023 Registration No.

July 27, 2023 EX-99.1

ATN Reports Second-Quarter 2023 Results; Reiterates Outlook

Exhibit 99.1 ATN Reports Second-Quarter 2023 Results; Reiterates Outlook “First-to-Fiber” and “Glass & SteelTM” Strategies Drive Year Over Year Growth · Grew revenue 4% to $186.4 million · Increased total high-speed subscribers by 22% · Expanded broadband homes passed by high-speed data services by 66% · Capital expenditures were $38.9 million (net of $4.9 million of reimbursements) Operating Inco

July 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 26, 2023 ATN INTERNATIONAL,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 26, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

July 17, 2023 EX-10.1

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)

Exhibit 10.1 CREDIT AGREEMENT by and among ATN INTERNATIONAL, INC., as Borrower, THE GUARANTORS PARTY HERETO, THE LENDERS PARTY HERETO COBANK, ACB, as Administrative Agent, Lead Arranger, Bookrunner, Issuing Lender and Swing Line Lender, FIFTH THIRD BANK, NATIONAL ASSOCIATION, as a Joint Lead Arranger, and MUFG BANK, LTD., as a Joint Lead Arranger Dated as of July 13, 2023 TABLE OF CONTENTS Page I

July 17, 2023 EX-99.1

ATN International Completes Renewal and Expansion of Credit Facilities

Exhibit 99.1 News Release For Immediate Release Contact: ATN International, Inc. July 17, 2023 Justin D. Benincasa Chief Financial Officer 978-619-1300 ATN International Completes Renewal and Expansion of Credit Facilities BEVERLY, MA, July 17, 2023 - ATN International, Inc. (“ATN” or the “Company”) (Nasdaq: ATNI), a leading provider of digital infrastructure and communication services, today anno

July 17, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 13, 2023 ATN INTERNATIONAL,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 13, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

June 13, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2023 ATN INTERNATIONAL,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juris

June 13, 2023 EX-10.1

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)

Exhibit 10.1 ATN INTERNATIONAL, INC. 2023 EQUITY INCENTIVE PLAN Section 1.               Effectiveness and Purpose. Effective as of the Effective Date, the ATN International, Inc. 2023 Equity Incentive Plan (as may be amended from time to time, the “Plan”) is hereby established. The purpose of the Plan is to provide employees of ATN International, Inc., a Delaware corporation (together with its su

June 13, 2023 EX-10.2

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)

Exhibit 10.2 Restricted Stock Unit No. ATN INTERNATIONAL, INC. Form of Restricted Stock Unit Award Grant Notice Restricted Stock Unit Award under the Company’s ATN International, Inc. 2023 Equity Incentive Plan 1. Name and Address of Participant: 2. Date of Grant of Restricted Stock Unit Award: 3. Maximum Number of Shares underlying Restricted Stock Unit Award: 4. Vesting of Award:  This Restricte

June 13, 2023 EX-10.3

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)

  Exhibit 10.3   Performance Stock Unit No.   ATN INTERNATIONAL, INC.   Form of Performance Stock Unit Award Grant Notice  Performance Stock Unit Award under the  ATN International, Inc. 2023 Equity Incentive Plan          1. Name and Address of Participant:                             2. Date of Grant of Performance Stock Unit Award:             3. Target Number of Shares underlying Performance S

June 9, 2023 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 6, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juris

May 26, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) Definit

May 10, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN

April 27, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

April 27, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 26, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 27, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

April 27, 2023 EX-99.1

ATN International, Inc. Unaudited Condensed Consolidated Balance Sheets (in Thousands)

Exhibit 99.1 ATN Reports First-Quarter 2023 Results; Reiterates Outlook “First-to-Fiber” and “Glass and SteelTM” Strategies Drive Growth · Revenue grew 8% to $185.8 million · Increased total high-speed subscribers reached by 18% · Expanded broadband homes passed by high-speed digital solutions by 56% · Capital expenditures were $50.6 million (net of $2.1 million of reimbursables) Adjusted EBITDA I

March 15, 2023 EX-10.12

Form 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)

Exhibit 10.12 FORM OF EXECUTIVE AGREEMENT THIS EXECUTIVE AGREEMENT (this “Agreement”), dated as of [DATE] (the “Effective Date”), is made and entered by and between ATN International, Inc., a Delaware corporation (the “Company”), and [NAME] (the “Executive”). WITNESSETH: WHEREAS, the Executive serves as the Chief Executive Officer of the Company, and is expected to continue to contribute to the sh

March 15, 2023 EX-10.11

Form 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)

Exhibit 10.11 FORM OF EXECUTIVE AGREEMENT THIS EXECUTIVE AGREEMENT (this “Agreement”), dated as of [DATE] (the “Effective Date”), is made and entered by and between ATN International, Inc., a Delaware corporation (the “Company”), and [NAME] (the “Executive”). WITNESSETH: WHEREAS, the Executive serves as the [TITLE] of the Company, and is expected to continue to contribute to the short- and long-te

March 15, 2023 EX-21

Subsidiaries of ATN International, Inc.

Exhibit 21 SUBSIDIARIES OF ATN INTERNATIONAL, INC. Jurisdiction of Incorporation Other name(s) under which entity does business Alloy, Inc. (1) Delaware Commnet, Commnet Broadband, Choice Wireless, Sacred Wind, Ethos NTUA Wireless, LLC Delaware Choice NTUA Wireless GTT, Inc. (2) Guyana GTT+, GTT Fibre, MMG Mora Valley Wireless Delaware Mora Valley Wireless Elbert County Wireless Delaware Elbert Co

March 15, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-12593

March 14, 2023 EX-3.1

Amended 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).

Exhibit 3.1 BY-LAWS OF ATN INTERNATIONAL, INC. as amended and restated on March 8, 2023 (A Delaware Corporation) ARTICLE I Offices SECTION 1. Registered Office. The registered office of the Corporation within the State of Delaware shall be in the City of Dover, County of Kent. SECTION 2. Other Offices. The Corporation may also have an office or offices other than said registered office at such pla

March 14, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 8, 2023 ATN INTERNATIONAL,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 8, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

February 23, 2023 EX-99.1

ATN Reports Fourth-Quarter and Full-Year 2022 Results; Provides Guidance and Outlook

Exhibit 99.1 News Release ATN Reports Fourth-Quarter and Full-Year 2022 Results; Provides Guidance and Outlook Fourth Quarter 2022 Results · Revenues increased 2% year over year to $192.0 million from $187.6 million · Net loss improved to $1.4 million versus $24.2 million a year ago · EBITDA1 increased to $42.7 million from $17.2 million a year ago · Adjusted EBITDA2 increased to $43.6 million fro

February 23, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 22, 2023 ATN INTERNATIO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 22, 2023 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

February 10, 2023 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* ATN International Inc (Name of Issuer) Common Stock (Title of Class of Securities) 00215F107 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

February 10, 2023 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / Global Alpha Capital Management Ltd. - 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) ATN International, Inc. (Name of Issuer) Common (Title of Class of Securities) 00215F107 (CUSIP Number) December 31, 2022 Date of Event Which Requires Filing of this Statement Check the appropriate box to designate the rule pursuant to which this Schedule

February 9, 2023 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0020-atninternationalinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: ATN International Inc. Title of Class of Securities: Common Stock CUSIP Number: 00215F107 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to d

February 9, 2023 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / Prior Cornelius B Jr - SC 13G/A Passive Investment

SC 13G/A 1 tm236149d1sc13ga.htm SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 20) ATN INTERNATIONAL, INC. (Name of Issuer) Common Stock, par value $.01 per share (Title of Class of Securities) 00215F 107 (CUSIP Number) December 31, 2022 (Date of Events Which Requires Filing of this Statement) Check the app

December 30, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 23, 2022 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

December 30, 2022 EX-10.1

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.

Exhibit 10.1 AMENDMENT AND CONFIRMATION AGREEMENT This AMENDMENT AND CONFIRMATION AGREEMENT (this ?Agreement?) is entered into as of December 22, 2022, among COMMNET FINANCE, LLC, a Delaware limited liability company (?Borrower?), COMMNET WIRELESS, LLC, a Delaware limited liability company (?Commnet Wireless?), in its individual capacity, as Originator and as Servicer, ATN INTERNATIONAL, INC., a D

December 30, 2022 EX-10.3

Amendment Agreement, dated as of December 28, 2022 , among, ATN International, Inc., as Borrower, CoBank, ACB, as Administrative Agent, and the Lenders and Guarantors party thereto (incorporated by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on December 30, 2022).

Exhibit 10.3 AMENDMENT AGREEMENT This AMENDMENT AGREEMENT (this ?Agreement?) is entered into as of December 28, 2022 and effective as of November 7, 2022, among ATN INTERNATIONAL, INC., a Delaware corporation (?Borrower?), each of the subsidiaries of Borrower identified as guarantors on the signature pages hereto (individually, a ?Guarantor? and, collectively, the ?Guarantors?; and together with B

December 30, 2022 EX-10.2

First Amendment Agreement, dated as of December 23, 2022 , among Alaska Communications Systems Group, Inc., Alaska Management, Inc., the other Guarantors identified on the signature pages thereto, the Lenders party thereto, and Fifth Third Bank, National Association, as Administrative Agent, an L/C Issuer and Swing Line Lender and Bank of the West, as an L/C Issuer (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on December 30, 2022).

EX-10.2 3 tm2233773d1ex10-2.htm EXHIBIT 10.2 Exhibit 10.2 FIRST AMENDMENT This First Amendment (this “Agreement”) is entered into as of December 23, 2022 (the “First Amendment Effective Date”), by and among Alaska Communications Systems Group, Inc., a Delaware corporation (the “Borrower”), Alaska Management, Inc., a Delaware corporation (“Holdings”), the other Guarantors identified on the signatur

November 9, 2022 EX-10.1

Fourth Amendment, Consent and Confirmation Agreement, dated November 7, 2022, among ATN International, Inc., each of the Guarantors named therein, CoBank, ACB, and each of the Lenders named therein (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 001 12593) filed on November 9, 2022).

Exhibit 10.1 EXECUTION VERSION FOURTH AMENDMENT, CONSENT AND CONFIRMATION AGREEMENT This FOURTH AMENDMENT, CONSENT AND CONFIRMATION AGREEMENT (this ?Agreement?) is entered into as of November 7, 2022, among ATN INTERNATIONAL, INC., a Delaware corporation (?Borrower?), each of the subsidiaries of Borrower identified as guarantors on the signature pages hereto (individually, a ?Guarantor? and, colle

November 9, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 27, 2022 EX-99.1

ATN Reports Third Quarter 2022 Results and Reiterates Financial Outlook

Exhibit 99.1 News Release ATN Reports Third Quarter 2022 Results and Reiterates Financial Outlook Third Quarter 2022 Results ? Revenues increased by 9% year over year to $182.2 million from $166.8 million a year ago. ? Net loss was $2.8 million versus $2.6 million a year ago. ? EBITDA1 increased to $38.0 million from $31.4 million a year ago. ? Adjusted EBITDA2 increased to $41.9 million from $36.

October 27, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2022 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

August 16, 2022 CORRESP

August 16, 2022

August 16, 2022 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Washington, D.

August 9, 2022 S-3

As filed with the Securities and Exchange Commission on August 9, 2022. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ATN International, Inc. (Exact name of re

S-3 1 tm2222779d1s3.htm FORM S-3 As filed with the Securities and Exchange Commission on August 9, 2022. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ATN International, Inc. (Exact name of registrant as specified in its charter) Delaware 47-0728886 (State or other jurisdiction of (I.R.S. Employer Identifica

August 9, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Registration Statement on Form S-3 ATN INTERNATIONAL, INC.

August 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 8, 2022 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 20, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number

August 8, 2022 EX-99.1

ALASKA COMMUNICATIONS SYSTEMS GROUP, INC. For the three and six months ended June 30, 2021 and 2020 ALASKA COMMUNICATIONS SYSTEMS GROUP, INC. Table of Contents Three and Six Months Ended June 30, 2021

Exhibit 99.1 ALASKA COMMUNICATIONS SYSTEMS GROUP, INC. For the three and six months ended June 30, 2021 and 2020 ALASKA COMMUNICATIONS SYSTEMS GROUP, INC. Table of Contents Three and Six Months Ended June 30, 2021 Page Number Condensed Consolidated Balance Sheets (Unaudited) As of June 30, 2021 and December 31, 2020 3 Condensed Consolidated Statements of Comprehensive Income (Unaudited) For the Th

August 8, 2022 EX-99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

Exhibit 99.2 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION On July 22, 2021 (?Closing Date?) ATN International, Inc. (?ATN? or the ?Company?) completed the acquisition of Alaska Communications Systems Group, Inc. (?Alaska Communications?) contemplated by the Agreement and Plan of Merger dated December 31, 2020, by and among Alaska Communications, Alaska Management, Inc., a Delaware

August 8, 2022 EX-10.2

Third Amendment to Network Build and Maintenance Agreement dated as of the 4th day of August, 2022 and effective as of the 1st day of January, 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.

? Exhibit 10.2 ? CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH ?[***]?. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS (I) NOT MATERIAL AND (II) WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF DISCLOSED. ? Third Amendment to Network Build and Maintenance Agreement Between Commnet Wireless, LLC and AT&T Mobility LLC ? This Thi

July 28, 2022 EX-99.1

ATN Reports Second Quarter 2022 Results and Reiterates Financial Outlook

Exhibit 99.1 ATN Reports Second Quarter 2022 Results and Reiterates Financial Outlook Second Quarter 2022 Results ? Revenues increased to $179.5 million from $123.9 million a year ago, primarily due to the successful acquisition of Alaska Communications. ? Net loss was $0.5 million versus net income of $2.0 million a year ago. ? EBITDA1 increased to $38.8 million from $23.1 million a year ago. ? A

July 28, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2022 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

June 13, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2022 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juris

May 12, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

May 10, 2022 EX-10.1

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).

? Exhibit 10.1 ? AMENDMENT TO LOAN AGREEMENT ? AMENDMENT TO LOAN AGREEMENT (the "Amendment") dated as of May 5, 2022, by and between ATN VI HOLDINGS, LLC (the ?Borrower?), a corporation organized and existing under the laws of the State of Delaware and RURAL TELEPHONE FINANCE COOPERATIVE ("RTFC"), a cooperative association organized and existing under the laws of the District of Columbia. ? RECITA

May 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 28, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2022 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 28, 2022 EX-99.1

ATN Reports First Quarter 2022 Results and Reiterates Financial Outlook

Exhibit 99.1 News Release ATN Reports First Quarter 2022 Results and Reiterates Financial Outlook First Quarter 2022 Results ? Revenues increased to $172.0 million from $124.5 million a year ago, primarily due to the successful acquisition of Alaska Communications. ? Net loss was $0.9 million versus net income of $2.7 million a year ago. ? EBITDA1 increased to $36.7 million from $23.9 million a ye

April 28, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

DEF 14A 1 tm223648-1def14a.htm DEF 14A TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of th

March 16, 2022 EX-10.21

Limited Waiver of Net Leverage Ratio dated as of February 25, 2021, between ATN VI Holdings, LLC and the Rural Telephone Finance Cooperative.

Exhibit 10.21 ? ? ? ? ? ? February 22, 2022 ? Via Email (PDF) ? Ms. Michele Satrowsky Vice President ? Corporate Treasurer ATN International, Inc. 500 Cummings Center, Suite 2450 Beverly, MA 01915 ? Re: Limited Waiver of Net Leverage Ratio Covenant ? Dear Ms. Satrowsky: ? Rural Telephone Finance Cooperative ("RTFC") has received from ATN VI Holdings, LLC (the "Borrower") a request to waive complia

March 16, 2022 EX-21

Subsidiaries of ATN International, Inc.

Exhibit 21 SUBSIDIARIES OF ATN INTERNATIONAL, INC. Juristiction of Incorporation Other name(s) under which entity does business Commnet Wireless, LLC (1) Delaware Commnet, Geoverse, FirstNet, Commnet Four Corners Guyana Telephone and Telegraph Company Limited (2) Guyana Cellink, E-magine, GTT+, Blaze, MMG Atlantic Teleconnection Operating Company Limited British Virgin Islands GTT+, ATOC One Commu

March 16, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 15, 2022 EX-99.1

ATN Announces Appointment of Director

Exhibit 99.1 News Release For Immediate Release Contact: ATN International, Inc. March 15, 2022 Michael T. Prior Chairman and CEO 978-619-1300 ATN Announces Appointment of Director Beverly, MA (March 15, 2022) ? ATN International, Inc. (Nasdaq: ATNI) announced today that April V. Henry has joined the Company?s board of directors. Ms. Henry joins the Company?s board of directors with over two decad

March 15, 2022 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2022 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

February 24, 2022 EX-99.1

ATN Reports Fourth Quarter and Full Year 2021 Results and Provides Financial Outlook

Exhibit 99.1 News Release ATN Reports Fourth Quarter and Full Year 2021 Results and Provides Financial Outlook Fourth Quarter 2021 Results ? Revenues increased by 52% to $187.6 million from $123.7 million a year ago, primarily due to the successful acquisition of Alaska Communications. ? Net loss, including a one-time $20.6 million goodwill impairment charge, was $24.2 million versus $20.5 million

February 24, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2022 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

February 9, 2022 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: ATN International Inc. Title of Class of Securities: Common Stock CUSIP Number: 00215F107 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

February 8, 2022 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* ATN International Inc (Name of Issuer) Common Stock (Title of Class of Securities) 00215F107 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

February 4, 2022 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / Prior Cornelius B Jr Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 19)* ATN INTERNATIONAL, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 00215F 107 (CUSIP Number) December 31 , 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

January 4, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 29, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

January 4, 2022 EX-10.1

Amendment and Confirmation Agreement, dated as of December 29, 2021, 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.

Exhibit 10.1 Execution Version AMENDMENT AND CONFIRMATION AGREEMENT This AMENDMENT AND CONFIRMATION AGREEMENT (this ?Agreement?) is entered into as of December 29, 2021, among COMMNET FINANCE, LLC, a Delaware limited liability company (?Borrower?), COMMNET WIRELESS, LLC, a Delaware limited liability company (?Commnet Wireless?), in its individual capacity, as Originator and as Servicer, ATN INTERN

November 9, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 28, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 27, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

October 28, 2021 EX-99.1

ATN Reports Third Quarter 2021 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Wednesday October 27, 2021 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Third Quarter 2021 Results Alaska Communications Acquisition Drives 49% Year-on-Year Consolidated Revenue Growth ? International Telecom Continues to Generate Subscriber and Revenue Growth Alas

October 1, 2021 EX-99.1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Exhibit 99.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-38341 Al

October 1, 2021 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 20, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number

October 1, 2021 EX-99.3

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

Exhibit 99.3 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION On July 22, 2021 (?Closing Date?) ATN International, Inc. (?ATN? or the ?Company?) completed the acquisition of Alaska Communications Systems Group, Inc. (?Alaska Communications?) contemplated by the Agreement and Plan of Merger (the ?Merger Agreement?), by and among Alaska Communications, a Delaware corporation, Alaska Mana

October 1, 2021 EX-99.2

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Exhibit 99.2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38

August 9, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

July 29, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 28, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

July 29, 2021 EX-99.1

ATN Reports Second Quarter 2021 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Wednesday July 28, 2021 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Second Quarter 2021 Results Second Quarter 2021 Results Show Steady Performance ? International Telecom Continues to Generate Revenue and Subscriber Growth ? US Telecom Results Include Forecasted

July 22, 2021 EX-10.1

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).

Exhibit 10.1 Execution Copy ALSK HOLDINGS, LLC AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT dated as of July 21, 2021 THE UNITS REFERRED TO IN THIS AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR UNDER ANY OTHER APPLICABLE SECURITIES LAWS AND MAY NOT BE TRANSFERRED, SOLD, ASSIGNED, PLEDGED, HYPOTHECATED,

July 22, 2021 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 20, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

July 22, 2021 EX-10.2

Credit Agreement, dated as of July 22, 2021, by and among the Borrower, Parent and certain of the Parent’s direct and indirect subsidiaries, as guarantors, Fifth Third Bank, National Association, as Administrative Agent, and the lenders party thereto (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on July 22, 2021).

Exhibit 10.2 Execution Version Credit Agreement among Alaska Management, Inc., as Holdings, Project 8 Mergersub, Inc., a Delaware corporation, as the initial Borrower and upon, from and after the consummation of the Closing Date Merger, Alaska Communications Systems Group, Inc. as the Borrower, the Guarantors from time to time party hereto, the Lenders from time to time party hereto, and Fifth Thi

July 22, 2021 EX-99.1

ATN International, Inc. Completes Acquisition of Alaska Communications

Exhibit 99.1 News Release For Immediate Release Contact: July 22, 2021 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer 978-619-1300 ATN International, Inc. Completes Acquisition of Alaska Communications Beverly, MA - ATN International, Inc. (NASDAQ: ATNI) (?ATN?) announced today that it, along with its financial partner Freedom 3 Capital, LLC (?Fre

June 14, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

May 10, 2021 10-Q

Quarterly Report - 10-Q

? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ? ? Form 10-Q ? ? ? ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the quarterly period ended March 31, 2021 ? OR ? ? ? ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the transition period from to ? Commission File Number 001-1

May 10, 2021 EX-10.1

Second Amendment to Network Build and Maintenance Agreement dated as of the 4th day of May, 2021 and effective as of the 1st day of January, 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).

Exhibit 10.1 ? [***]CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH ?[***]?. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS (I) NOT MATERIAL AND (II) THE TYPE THAT THE COMPANY TREATS AS PRIVATE OR CONFIDENTIAL. ? Second Amendment to Network Build and Maintenance Agreement Between Commnet Wireless, LLC and AT&T Mobility LLC ? This Sec

April 30, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

April 29, 2021 DEF 14A

- DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.????) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitted by Ru

April 28, 2021 EX-99.1

ATN Reports First Quarter 2021 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Tuesday April 27, 2021 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports First Quarter 2021 Results ? International Telecom Continues Steady Performance ? US Telecom Results Reflect Expected Increase in Operating Costs ? Acquisition of Alaska Communications Expected to

April 28, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

March 15, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

March 15, 2021 EX-10.1

Form 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).

Exhibit 10.1 Performance Stock Unit No. ATN INTERNATIONAL, INC. Form of Performance Stock Unit Award Grant Notice Performance Stock Unit Award Grant under the ATN International, Inc. 2008 Equity Incentive Plan 1. Name and Address of Participant: 2. Date of Grant of Performance Stock Unit Award: 3. Target Number of Shares underlying Performance Stock Unit Award (?Target PSUs?): 4. Vesting of Award:

March 15, 2021 EX-10

Form 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).

Exhibit 10.2 Restricted Stock Unit No. ATN INTERNATIONAL, INC. Form of Restricted Stock Unit Award Grant Notice Restricted Stock Unit Award Grant under the Company?s ATN International, Inc. 2008 Equity Incentive Plan 1. Name and Address of Participant: 2. Date of Grant of Restricted Stock Unit Award: 3. Maximum Number of Shares underlying Restricted Stock Unit Award: 4. Vesting of Award: This Rest

March 1, 2021 EX-21

Subsidiaries of ATN International, Inc.

Exhibit 21 SUBSIDIARIES OF ATN INTERNATIONAL, INC. ? ? ? ? ? ? ? Jurisdiction of Incorporation ? Other name(s) under which entity does business Commnet Wireless, LLC (1) Delaware Commnet, Geoverse, Choice Wireless Mora Valley Wireless, LP ? Delaware ? Commnet NTUA Wireless, LLC ? Delaware ? Choice Wireless Atlantic Tele-Network, LLC (2) ? Delaware ? ATN GTT International Service SRL ? Barbados ? G

March 1, 2021 EX-10.21

Limited Waiver of Net Leverage Ratio dated as of February 25, 2021, between ATN VI Holdings, LLC and the Rural Telephone Finance Cooperative (incorporated by reference to Exhibit 10.21 to the Company’s Annual Report on Form 10-K (File No. 001 12593) filed on March 1, 2021).

Exhibit 10.21 ? ? ? ? ? ? February 22, 2021 ? Via Email (PDF) ? Ms. Michele Satrowsky Vice President ? Corporate Treasurer ATN International, Inc. 500 Cummings Center, Suite 2450 Beverly, MA 01915 ? Re: Limited Waiver of Net Leverage Ratio Covenant ? Dear Ms. Satrowsky: ? Rural Telephone Finance Cooperative ("RTFC") has received from ATN VI Holdings, LLC (the "Borrower") a request to waive complia

March 1, 2021 10-K

Annual Report - 10-K

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 24, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

February 24, 2021 EX-99.1

ATN Reports Fourth Quarter and Full Year 2020 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Tuesday February 23, 2021 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Fourth Quarter and Full Year 2020 Results · Fourth Quarter and Full Year Performance Demonstrates Resilience of ATN’s Telecom Services Businesses · Alaska Communications’ Shareholders to Vote on

February 12, 2021 SC 13G/A

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* ATN International Inc (Name of Issuer) Common Stock (Title of Class of Securities) 00215F107 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: ATN International Inc. Title of Class of Securities: Common Stock CUSIP Number: 00215F107 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

January 29, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2)* Alaska Communications Systems Group, Inc. (Name of Issuer) Common Stock, $0.01 par value per share (Titl

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2)* Alaska Communications Systems Group, Inc. (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 01167P101 (CUSIP Number) Michael T. Prior President and Chief Executive Officer ATN International, Inc. 500 Cummings Center

January 22, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 15, 2021 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

January 13, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* Alaska Communications Systems Group, Inc. (Name of Issuer) Common Stock, $0.01 par value per share (Titl

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* Alaska Communications Systems Group, Inc. (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 01167P101 (CUSIP Number) Michael T. Prior President and Chief Executive Officer ATN International, Inc. 500 Cummings Center

January 8, 2021 EX-3

Joint Filing Agreement, dated as of January 8, 2021, by and among ATN International, Inc., Project 8 Capital, LLC and Project 8 Buyer, LLC.

Exhibit 3 Joint Filing Agreement Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (the “Exchange Act”) the undersigned hereby agree to the joint filing on behalf of each of them of any filing required by such party under Section 13 of the Exchange Act or any rule or regulation thereunder (including any amendment, restatement, supplement, and/or exhibit thereto) with respect to securities of Alaska Communications Systems Group, Inc.

January 8, 2021 SC 13D

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* Alaska Communications Systems Group, Inc. (Name of Issuer) Common Stock, $0.01 par value per share (Title

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* Alaska Communications Systems Group, Inc. (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 01167P101 (CUSIP Number) Michael T. Prior President and Chief Executive Officer ATN International, Inc. 500 Cummings Center B

January 5, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

January 4, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 31, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

January 4, 2021 EX-99.1

ATN International, Inc. Announces Agreement to Acquire Alaska Communications -Conference Call Scheduled for 9am ET Today to Discuss the Transaction -

Exhibit 99.1 News Release For Immediate Release Contact: January 4, 2021 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer 978-619-1300 ATN International, Inc. Announces Agreement to Acquire Alaska Communications -Conference Call Scheduled for 9am ET Today to Discuss the Transaction - Beverly, MA - ATN International, Inc. (NASDAQ: ATNI) (“ATN”) annou

January 4, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 31, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

January 4, 2021 EX-10.1

Voting Agreement, dated as of December 31, 2020, by and between TAR Holdings, LLC and Project 8 Buyer, LLC (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on January 4, 2021).

Exhibit 10.1 VOTING AGREEMENT This VOTING AGREEMENT (this “Agreement”) is dated as of December 31, 2020, by and between the undersigned holder (“Shareholder”) of common stock, par value $0.01 per share (the “Company Common Stock”) of Alaska Communications Systems Group, Inc. a Delaware corporation (the “Company”) and Project 8 Buyer, LLC, a Delaware limited liability company (“Parent”). All terms

January 4, 2021 EX-2.1

Agreement and Plan of Merger, dated as of December 31, 2020, by and among Alaska Communications Systems Group, Inc., Project 8 Buyer, LLC and Project 8 Mergersub, Inc. (incorporated by reference to Exhibit 2.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on January 4, 2021).

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER by and among ALASKA COMMUNICATIONS SYSTEMS GROUP, INC., PROJECT 8 BUYER, LLC, and PROJECT 8 MERGERSUB, INC. December 31, 2020 TABLE OF CONTENTS Page ARTICLE 1 DEFINITIONS 2 Section 1.01 Definitions 2 Section 1.02 Other Definitional and Interpretative Provisions 16 ARTICLE 2 THE MERGER 17 Section 2.01 The Closing 17 Section 2.02 The Merger 17 Section 2.03 Co

November 24, 2020 8-K

Other Events - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 19, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

November 4, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL

November 4, 2020 EX-10.1

First Amendment to Network Build and Maintenance Agreement dated as of 6th day of August, 2020 and effective as of the 1st day of July, 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).

Exhibit 10.1 CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH “[***]”. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS (I) NOT MATERIAL AND (II) WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF DISCLOSED. First Amendment to Network Build and Maintenance Agreement Between Commnet Wireless, LLC and AT&T Mobility LLC This First Amend

October 29, 2020 EX-99.1

ATN Reports Third Quarter 2020 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Wednesday October 28, 2020 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Third Quarter 2020 Results · Results Demonstrate Resilience and Discipline of Company’s Operations · International Telecom Posted Strong Growth in Operating Income and Cash Flow · US Telecom De

October 29, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 28, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

September 21, 2020 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 15, 2020 ATN INTERNATI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 15, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

August 10, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL, INC

August 6, 2020 DEF 14A

- DEF 14A

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

July 30, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 29, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

July 30, 2020 EX-99.1

ATN Reports Second Quarter 2020 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Wednesday July 29, 2020 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Second Quarter 2020 Results · Generated Double-Digit Operating Income and EBITDA Growth on Stable Revenues · International and US Telecom Services Demonstrated Resilience to COVID-19 Pandemic Disr

June 8, 2020 EX-99.1

Updated Recast 2019 and First Quarter 2020 Quarterly Revenue Categories

Exhibit 99.1 Updated Recast 2019 and First Quarter 2020 Quarterly Revenue Categories Three Months Ended March 31, 2019 International Telecom US Telecom Renewable Energy Corporate and Other Consolidated Revenues Communications Services $ 79,121 $ 21,493 $ - $ - $ 100,614 Other 1,196 - 1,490 - 2,686 Total $ 80,317 $ 21,493 $ 1,490 $ - $ 103,300 Communications Services Mobility $ 20,395 $ 2,694 $ - $

June 8, 2020 8-K/A

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number)

May 18, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 15, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juris

May 18, 2020 EX-99.1

* * *

Exhibit 99.1 May 2020 Fellow Stockholders: I am writing this annual letter to you while I, like most of you, am working from home as the novel coronavirus pandemic persists. The disruption to our personal and business activities is greater than many of us have ever experienced, and many in our communities are dealing with illness, death, and severe economic distress and uncertainty. In this contex

May 12, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jurisd

May 12, 2020 S-3ASR

- S-3ASR

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on May 12, 2020.

May 11, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL, IN

May 5, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jurisd

May 5, 2020 EX-99.1

Recast 2019 Quarterly Revenue Categories

Exhibit 99.1 Recast 2019 Quarterly Revenue Categories For the Three Months Ended March 31, 2019 International US Renewable Corporate Telecom Telecom Energy and Other Total Total Revenues Communications Services 79,107 21,358 - - 100,465 Other 1,210 135 1,490 - 2,835 Total 80,317 21,493 1,490 - 103,300 Communications Services Mobility 19,755 3,909 - - 23,664 Fixed 56,694 763 - - 57,457 Carrier Serv

April 29, 2020 10-K/A

Annual Report - FORM 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 Or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-125

April 29, 2020 EX-99.1

ATN Reports First Quarter 2020 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Wednesday April 29, 2020 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports First Quarter 2020 Results · International Telecom and US Telecom Segments Contributed to Strong Operating Income and EBITDA Growth · Company Continues to Operate in all Markets as an “Essential

April 29, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 1, 2020 EX-10.1

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).

Exhibit 10.1 Execution Version 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 hereto $75,000,000 Senior Secured Delayed Draw Term Loan TABLE OF CONTENTS Page SECTION 1. DEF

April 1, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 26, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 1, 2020 EX-10.2

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).

Exhibit 10.2 CONSENT, RELEASE, AND CONFIRMATION AGREEMENT This CONSENT, RELEASE, AND CONFIRMATION AGREEMENT (this “Agreement”) is entered into as of March 26, 2020, among ATN INTERNATIONAL, INC., a Delaware corporation (“Borrower”), each of the subsidiaries of Borrower identified as guarantors on the signature pages hereto (individually, a “Guarantor” and, collectively, the “Guarantors”; and toget

March 2, 2020 EX-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).

EXHIBIT 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description sets forth certain material terms and provisions of ATN International, Inc.’s (“we,” “us,” and “our”) securities that are registered under Section 12 of the Securities Exchange Act of 1934, as amended. DESCRIPTION OF CAPITAL STOCK The following d

March 2, 2020 EX-10.18

Limited Waiver of Net Leverage Ratio dated as of February 26, 2020, between ATN VI Holdings, LLC and the Rural Telephone Finance Cooperative (incorporated by reference to Exhibit 10.18 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).

Exhibit 10.18 20701 Cooperative Way Dulles, Virginia 20166 703-467-1800 | www.rtfc.coop February 14, 2020 Via Email (PDF) Ms. Michele Satrowsky Vice President – Corporate Treasurer ATN International, Inc. 500 Cummings Center, Suite 2450 Beverly, MA 01915 Re: Limited Waiver of Net Leverage Ratio Covenant Dear Ms. Satrowsky Rural Telephone Finance Cooperative ("RTFC") has received from ATN VI Holdin

March 2, 2020 EX-21

Subsidiaries of ATN International, Inc.

Exhibit 21 SUBSIDIARIES OF ATN INTERNATIONAL, INC. Jurisdiction of Incorporation Other name(s) under which entity does business Ahana Renewables, LLC(1) Delaware Vibrant ATN Horizons, LLC.(3) Delaware Ahana Renewables,Vibrant Atlantic Teleconnection Operating Company Limited British Virgin Islands GTT Atlantic Teleconnection Holdings Company Limited British Virgin Islands GTT GTT International Ser

March 2, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-12593

February 20, 2020 EX-99.1

ATN Reports Fourth Quarter and Full Year 2019 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Wednesday February 19, 2020 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Fourth Quarter and Full Year 2019 Results · Continued growth in domestic and international telecom drives improved underlying operating results · Telecom businesses well positioned to continue

February 20, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 19, 2020 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

February 14, 2020 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / Prior Cornelius B Jr - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 18) ATN INTERNATIONAL, INC. (Name of Issuer) Common Stock, par value $.01 per share (Title of Class of Securities) 00215F 107 (CUSIP Number) December 31, 2019 (Date of Events Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursua

February 12, 2020 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: ATN International Inc Title of Class of Securities: Common Stock CUSIP Number: 00215F107 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

February 12, 2020 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* ATN INTERNATIONAL INC (Name of Issuer) Common Stock (Title of Class of Securities) 00215F107 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

November 8, 2019 EX-10.1

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).

Exhibit 10.1 CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH “[***]”. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS (I) NOT MATERIAL AND (II) WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF DISCLOSED. Execution Version Network Build and Maintenance Agreement Between Commnet Wireless, LLC And AT&T Mobility LLC Mobility Network

November 8, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL

October 24, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 23, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

October 24, 2019 EX-99.1

ATN Reports Third Quarter 2019 Results

Exhibit 99.1 News Release For Immediate Release Contact: 978-619-1300 Wednesday October 23, 2019 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Third Quarter 2019 Results Third Quarter Results · Revenue was $115.6 million compared to prior year of $121.1 million · Excluding one-time items and a sale transaction, revenue increased year-

October 10, 2019 EX-99.1

ATN Announces Appointment of Director

Exhibit 99.1 News Release For Immediate Release Contact: ATN International, Inc. October 10, 2019 Michael T. Prior Chairman and CEO 978-619-1300 ATN Announces Appointment of Director Beverly, MA (October 10, 2019) – ATN International, Inc. (Nasdaq: ATNI) announced today that the board of directors of the Company appointed James S. Eisenstein as a new independent director of the Company. Mr. Eisens

October 10, 2019 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 10, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

August 7, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL, INC

August 6, 2019 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

July 25, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 24, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

July 25, 2019 EX-99.1

ATN Reports Second Quarter 2019 Results

Exhibit 99.1 NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: 978-619-1300 Wednesday July 24, 2019 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Second Quarter 2019 Results Second Quarter Results · Revenue excluding sale transactions and one-time items shows year-on-year organic growth · International telecom results reflect operational im

June 4, 2019 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 4, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juris

May 9, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL, IN

April 25, 2019 DEF 14A

ATNI / Atlantic Tele-Network, Inc. DEF 14A

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 24, 2019 EX-99.1

ATN Reports First Quarter 2019 Results

Exhibit 99.1 NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: 978-619-1300 Wednesday April 24, 2019 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports First Quarter 2019 Results First Quarter Results · International Telecom Operations Continued to Show Strong Growth · U.S. Telecom Comparisons Reflected Impact of Lower Year-on-Year Wholesale Rev

April 24, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 24, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 16, 2019 EX-10.1

Third Amendment and Confirmation Agreement dated as of April 10, 2019 by and among the Company, as Borrower, CoBank, ACB, as Administrative Agent, the Guarantors named therein and the other Lenders named therein (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on April 16, 2019).

Exhibit 10.1 Execution Version THIRD AMENDMENT AND CONFIRMATION AGREEMENT This THIRD AMENDMENT AND CONFIRMATION AGREEMENT (this “Agreement”) is entered into as of April 10, 2019, among ATN INTERNATIONAL, INC. (formerly known as Atlantic Tele-Network, Inc.), a Delaware corporation (“Borrower”), each of the subsidiaries of Borrower identified as guarantors on the signature pages hereto (individually

April 16, 2019 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 10, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

March 19, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other jurisdiction of incorporation) (Commission

March 19, 2019 EX-10.1

Form of Severance Agreement with Chief Executive Officer (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on March 19, 2019).

Exhibit 10.1 EXECUTIVE AGREEMENT THIS EXECUTIVE AGREEMENT (this “Agreement”), dated as of March 13, 2019 (the “Effective Date”), is made and entered by and between ATN International, Inc., a Delaware corporation (the “Company”), and Michael T. Prior (the “Executive”). WITNESSETH: WHEREAS, the Executive serves as the President and Chief Executive Officer of the Company and is expected to continue t

March 19, 2019 EX-10.2

Form of Severance Agreement with Non-CEO Executive Officers (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on March 19, 2019).

Exhibit 10.2 EXECUTIVE AGREEMENT THIS EXECUTIVE AGREEMENT (this “Agreement”), dated as of March 13, 2019 (the “Effective Date”), is made and entered by and between ATN International, Inc., a Delaware corporation (the “Company”), and [·] (the “Executive”). WITNESSETH: WHEREAS, the Executive serves as the [·] of the Company and is expected to continue to contribute to the short- and long-term profit

February 28, 2019 EX-21

Subsidiaries of ATN International, Inc.

Exhibit 21 SUBSIDIARIES OF ATN INTERNATIONAL, INC. Jurisdiction of Incorporation Other name(s) under which entity does business Ahana Renewables, LLC(1) Delaware Vibrant ATN Horizons, LLC.(3) Delaware Ahana Renewables,Vibrant Atlantic Teleconnection Operating Company Limited British Virgin Islands GTT Atlantic Teleconnection Holdings Company Limited British Virgin Islands GTT GTT International Ser

February 28, 2019 EX-10.19

Limited Waiver of Net Leverage Ratio dated as of February 25, 2019, between ATN VI Holdings, LLC and the Rural Telephone Finance Cooperative (incorporated by reference to Exhibit 10.19 to the Company’s Annual Report on Form 10-K (File No. 001-12593) filed on February 28, 2019)

Exhibit 10.19 20701 Cooperative Way Dulles, Virginia 20166 703-467-1800 | www.rtfc.coop February 25, 2019 Via Email & U.S. Mail Ms. Michele Satrowsky Vice President – Corporate Treasurer ATN International, Inc. 500 Cummings Center, Suite 2450 Beverly, MA 01915 Re: Limited Waiver of Net Leverage Ratio Covenant Dear Ms. Satrowsky Rural Telephone Finance Cooperative ("RTFC") has received from ATN VI

February 28, 2019 EX-3.4

Amended and Restated By-Laws, effective as of February 27, 2017 (incorporated by reference to Exhibit 3.4 to the Company’s Annual Report on Form 10-K (File No. 001-12593) for the year ended December 31, 2018 filed on February 28, 2019).

Exhibit 3.4 BY-LAWS OF ATN INTERNATIONAL, INC. as amended and restated on February 27, 2017 (A Delaware Corporation) ARTICLE I Offices SECTION 1.Registered Office. The registered office of the Corporation within the State of Delaware shall be in the City of Dover, County of Kent. SECTION 2.Other Offices. The Corporation may also have an office or offices other than said registered office at such p

February 28, 2019 10-K

ATNI / Atlantic Tele-Network, Inc. 10-K (Annual Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10‑K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001‑12593

February 21, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 20, 2019 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

February 21, 2019 EX-99.1

ATN Reports Fourth Quarter and Full Year 2018 Results

Exhibit 99.1 FINAL NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: 978-619-1300 Wednesday February 20, 2019 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Fourth Quarter and Full Year 2018 Results Fourth Quarter Results · International Telecom Operations Showed Positive Comparisons in Key Markets · U.S. Telecom Comparisons Reflected Contin

February 12, 2019 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / Prior Cornelius B Jr - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 17) ATN INTERNATIONAL, INC. (Name of Issuer) Common Stock, par value $.01 per share (Title of Class of Securities) 00215F 107 (CUSIP Number) December 31, 2018 (Date of Events Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursua

February 11, 2019 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / VANGUARD GROUP INC Passive Investment

atninternationalinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6 )* Name of issuer: ATN International Inc Title of Class of Securities: Common Stock CUSIP Number: 00215F107 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropriat

February 8, 2019 SC 13G/A

ATNI / Atlantic Tele-Network, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* ATN INTERNATIONAL INC (Name of Issuer) Common Stock (Title of Class of Securities) 00215F107 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

November 9, 2018 10-Q

ATNI / Atlantic Tele-Network, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL

November 8, 2018 EX-99.1

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL INFORMATION

Exhibit 99.1 UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL INFORMATION The following unaudited pro forma condensed consolidated financial information has been prepared by the management of ATN International, Inc. (the “Company” or “ATN”) and gives pro forma effect to the completion of the sale by the Company’s U.S. solar portfolio. The Company, through its subsidiary Ahana Renewables, LLC,

November 8, 2018 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2018 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

November 8, 2018 EX-99.2

ATN Closes Sale of U.S. Solar Portfolio

Exhibit 99.2 NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: ATN International, Inc. November 8, 2018 Justin D. Benincasa Chief Financial Officer 978-619-1300 ATN Closes Sale of U.S. Solar Portfolio Beverly, MA (November 8, 2018) — ATN (NASDAQ: ATNI) announced today that its subsidiary Ahana Renewables, LLC (“Ahana”), has sold its distributed generation solar power systems in Massachusetts, California

October 25, 2018 EX-99.1

ATN Reports Third Quarter 2018 Results

Exhibit 99.1 NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: 978-619-1300 Wednesday October 24, 2018 Michael T. Prior Chairman and Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Third Quarter 2018 Results · Another Quarter of Sequential Earnings Growth · Restoration of US Virgin Islands Network Almost Complete Third Quarter Financial Highlights: · Revenues: $121.1 mill

October 25, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 24, 2018 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer j

September 11, 2018 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 9, 2018 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer

September 11, 2018 EX-10.1

Purchase and Sale Agreement by and between Ahana Renewables, LLC and CleanCapital Holdco 4, LLC, dated as of September 9, 2018, (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-12593) filed on September 9, 2018).

Exhibit 10.1 Execution Version PURCHASE AND SALE AGREEMENT Dated as of September 9, 2018 by and between CleanCapital Holdco 4 LLC as the Buyer and Ahana Renewables, LLC as the Seller ARTICLE I DEFINITIONS AND RULES OF INTERPRETATION 2 Section 1.1 Defined Terms 2 Section 1.2 Rules of Interpretation 13 ARTICLE II PURCHASE AND SALE OF COMPANY INTERESTS 14 Section 2.1 Purchase and Sale of Company Inte

September 11, 2018 EX-99.1

ATN Announces Sale of U.S. Solar Portfolio

Exhibit 99.1 NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: ATN International, Inc. September 11, 2018 Michael T. Prior Chief Executive Officer 978-619-1300 Justin D. Benincasa Chief Financial Officer 978-619-1300 ATN Announces Sale of U.S. Solar Portfolio Beverly, MA (September 11, 2018) — ATN (NASDAQ: ATNI) announced today that its subsidiary Ahana Renewables, LLC (“Ahana”), has entered into an agr

August 8, 2018 10-Q

ATNI / Atlantic Tele-Network, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL, INC

August 8, 2018 EX-10.1

Consent and Waiver between Rural Telephone Finance Cooperative, Caribbean Asset Holdings, LLC and DTR Holdings, LLC, dated August 3, 2018. (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) filed on August 8, 2018).

Exhibit 10.1 August 3, 2018 Via Facsimile & U.S. Mail Ms. Michele Satrowsky Vice President – Corporate Treasurer ATN International, Inc. 500 Cummings Center, Suite 2450 Beverly, MA 01915 Re: Consent to incur debt under the Loan Agreement made as of July 1, 2016 by and among ATN VI Holdings, LLC and Caribbean Asset Holdings LLC (each a “Borrower” and together the “Borrowers”), and Rural Telephone F

July 26, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2018 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

July 26, 2018 EX-99.1

ATN Reports Second Quarter 2018 Results — Sequential Earnings Growth Led By Improved International Telecom Results — — Rebuild of U.S. Virgin Islands Network Proceeding Apace —

Exhibit 99.1 NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: 978-619-1300 Wednesday July 25, 2018 Michael T. Prior Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports Second Quarter 2018 Results — Sequential Earnings Growth Led By Improved International Telecom Results — — Rebuild of U.S. Virgin Islands Network Proceeding Apace — Second Quarter Financial Highlights: · Reven

June 18, 2018 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 12, 2018 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer juri

May 9, 2018 10-Q

ATNI / Atlantic Tele-Network, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-12593 ATN INTERNATIONAL, IN

May 9, 2018 EX-10.1

Consent and Waiver between Rural Telephone Finance Cooperative, Caribbean Asset Holdings, LLC and DTR Holdings, LLC, dated May 7, 2018. (incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q (File No. 001-12593) filed on May 9, 2018)

Exhibit 10.1 May 7, 2018 Via Facsimile & U.S. Mail Ms. Michelle Satrowsky Vice President – Corporate Treasurer ATN International, Inc. 500 Cummings Center, Suite 2450 Beverly, MA 01915 Re: Waiver of the prohibition on the incurrence of debt and Consent to incur debt under the Loan Agreement made as of July 1, 2016 by and among ATN VI Holdings, LLC and Caribbean Asset Holdings LLC (each a “Borrower

May 9, 2018 EX-10.2

Form 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).

Exhibit 10.2 Restricted Stock Unit No. ATN INTERNATIONAL, INC. Form of Restricted Stock Unit Award Grant Notice Restricted Stock Unit Award Grant under the Company’s ATN International, Inc. 2008 Equity Incentive Plan 1. Name and Address of Participant: 2. Date of Grant of Restricted Stock Unit Award: 3. Maximum Number of Shares underlying Restricted Stock Unit Award: 4. Vesting of Award: This Rest

April 30, 2018 DEF 14A

ATNI / Atlantic Tele-Network, Inc. DEF 14A

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 25, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 2018 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

April 25, 2018 EX-99.1

ATN Reports First Quarter 2018 Results

Exhibit 99.1 NEWS RELEASE FOR IMMEDIATE RELEASE CONTACT: 978-619-1300 Wednesday April 25, 2018 Michael T. Prior Chief Executive Officer Justin D. Benincasa Chief Financial Officer ATN Reports First Quarter 2018 Results First Quarter Financial Highlights: · Revenues: $104.5 million · Adjusted EBITDA(1): $26.3 million · Operating income of $4.2 million · Net loss attributable to ATN stockholders: $5

April 19, 2018 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 13, 2018 ATN INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 001-12593 47-0728886 (State or other (Commission File Number) (IRS Employer jur

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