# EDGAR Filing Document

**Accession Number:** 0000922147
**File Stem:** 0000929638-26-002224
**Filing Date:** 2026-6
**Character Count:** 11848
**Document Hash:** 362729056078e8b7fee9bd42bfc2c0e6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000929638-26-002224.hdr.sgml**: 20260615

**ACCESSION NUMBER**: 0000929638-26-002224

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260420

**FILED AS OF DATE**: 20260615

**DATE AS OF CHANGE**: 20260615

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** PRIOR CORNELIUS B JR
- **CENTRAL INDEX KEY:** 0000922147

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12593
- **FILM NUMBER:** 261092758

**MAIL ADDRESS:**
- **STREET 1:** C/O ATN INTERNATIONAL, INC.
- **STREET 2:** 500 CUMMINGS CENTER
- **CITY:** BEVERLY
- **STATE:** MA
- **ZIP:** 01915
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ATN International, Inc.
- **CENTRAL INDEX KEY:** 0000879585
- **STANDARD INDUSTRIAL CLASSIFICATION:** TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 470728886
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 500 CUMMINGS CENTER
- **CITY:** BEVERLY
- **STATE:** MA
- **ZIP:** 01915
- **BUSINESS PHONE:** 9786191300

**MAIL ADDRESS:**
- **STREET 1:** 500 CUMMINGS CENTER
- **CITY:** BEVERLY
- **STATE:** MA
- **ZIP:** 01915

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ATLANTIC TELE NETWORK INC /DE
- **DATE OF NAME CHANGE:** 19930328

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>PRIOR CORNELIUS B JR<br><sub>(Last) (First) (Middle)</sub><br>C/O ATN INTERNATIONAL, INC.<br>500 CUMMINGS CENTER<br><sub>(Street)</sub><br>BEVERLY, MA 01915<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-04-20 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>ATN International, Inc. [ ATNI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-04-20<sup>(1)</sup> |  | G<sup>(2)</sup> |  | 200000 | D | $0 | 3974303 | D<sup>(3)</sup> |  |
| Common Stock | 2026-04-20<sup>(1)</sup> |  | G<sup>(2)</sup> |  | 200000 | A | $0 | 200000 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-07<sup>(1)</sup> |  | S |  | 3500 | D | 25.54<sup>(4)</sup> | 196500 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-07<sup>(1)</sup> |  | S |  | 2500 | D | $26 | 194000 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-08<sup>(1)</sup> |  | S |  | 1000 | D | $26.25 | 193000 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-11<sup>(1)</sup> |  | S |  | 5000 | D | $27.25 | 188000 | I | By VI E-Cell Tropical Telecom Ltd |
| Common Stock | 2026-05-14<sup>(1)</sup> |  | S |  | 2000 | D | $27.25 | 186000 | I | By VI E-Cell Tropical Telecom Ltd |
| Common Stock | 2026-05-20<sup>(1)</sup> |  | S |  | 3500 | D | $27.02 | 182500 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-21<sup>(1)</sup> |  | S |  | 2000 | D | $27.25 | 180500 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-26<sup>(1)</sup> |  | S |  | 2854 | D | 27.96<sup>(5)</sup> | 177646 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-27<sup>(1)</sup> |  | S |  | 17500 | D | 28.17<sup>(6)</sup> | 160146 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-27<sup>(1)</sup> |  | G<sup>(7)</sup> |  | 30000 | D | $0 | 130146 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-05-27<sup>(1)</sup> |  | G<sup>(7)</sup> |  | 30000 | A | $0 | 4004303 | D |  |
| Common Stock | 2026-05-28<sup>(1)</sup> |  | S |  | 2500 | D | $28.25 | 127646 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-06-01<sup>(1)</sup> |  | S |  | 12610 | D | 28.29<sup>(8)</sup> | 115036 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-06-02<sup>(1)</sup> |  | S |  | 6000 | D | 28.3<sup>(9)</sup> | 109036 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-06-03<sup>(1)</sup> |  | G<sup>(10)</sup> |  | 10000 | D | $0 | 3994303 | D |  |
| Common Stock | 2026-06-11 |  | S |  | 2000 | D | $27.3 | 107036 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock | 2026-06-12 |  | S |  | 19100 | D | 27.96<sup>(11)</sup> | 87936 | I | By VI E-Cell TropicalTelecom Ltd |
| Common Stock |  |  |  |  |  |  |  | 500 | I | By Wife |
| Common Stock |  |  |  |  |  |  |  | 8227 | I | By Tropical Aircraft Co |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) This Form 4 is being filed late due to inadvertent administrative error.

(2) Represents shares transferred by the reporting person to VI E-Cell Tropical Telecom Ltd. ("VI E-Cell"), a U.S. Virgin Islands limited company that is 80% owned by the reporting person and of which the reporting person serves as the chairman.

(3) In the Form 4 filed by the reporting person on April 20, 2026, the reporting person inadvertently reported indirect beneficial ownership of 363,424 shares held as trustee of a revocable trust. Such shares are not reported on this Form 4 as they are held by a 501(c)(3) foundation and the reporting person has no pecuniary interest in such shares, and as such, have been removed from this filing to correct the prior report.

(4) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.00 to $25.75, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

(5) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.87 to $28.00, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

(6) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.00 to $28.65, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

(7) Represents shares transferred by VI E-Cell to the reporting person.

(8) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.25 to $28.35, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

(9) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.30 to $28.31, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

(10) Represents a bona fide gift of 10,000 shares from the reporting person to a non-profit entity.

(11) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.56 to $28.40, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

**Signature:** /s/ Andy Fienberg, Attorney-in-Fact  
**Date:** 2026-06-15

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**