SEC Form 4 · accession 0000929638-26-002224

ATN International, Inc. · ATNI

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Cornelius B Prior Jr.

10% Owner

Period of report

Apr 20, 2026

Accepted (ET)

Jun 15, 2026 · 9:56 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0000879585

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F3	Apr 20, 2026	G	200,000	$0.00	D	3,974,303	D
Common Stock^F1	Apr 20, 2026	G	200,000	$0.00	A	200,000	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1,F4	May 7, 2026	S	3,500	$25.54	D	196,500	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1	May 7, 2026	S	2,500	$26.00	D	194,000	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1	May 8, 2026	S	1,000	$26.25	D	193,000	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1	May 11, 2026	S	5,000	$27.25	D	188,000	I	By VI E-Cell Tropical Telecom Ltd
Common Stock^F1	May 14, 2026	S	2,000	$27.25	D	186,000	I	By VI E-Cell Tropical Telecom Ltd
Common Stock^F1	May 20, 2026	S	3,500	$27.02	D	182,500	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1	May 21, 2026	S	2,000	$27.25	D	180,500	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1,F5	May 26, 2026	S	2,854	$27.96	D	177,646	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1,F6	May 27, 2026	S	17,500	$28.17	D	160,146	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1	May 27, 2026	G	30,000	$0.00	D	130,146	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1	May 27, 2026	G	30,000	$0.00	A	4,004,303	D
Common Stock^F1	May 28, 2026	S	2,500	$28.25	D	127,646	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1,F8	Jun 1, 2026	S	12,610	$28.29	D	115,036	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1,F9	Jun 2, 2026	S	6,000	$28.30	D	109,036	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F1	Jun 3, 2026	G	10,000	$0.00	D	3,994,303	D
Common Stock	Jun 11, 2026	S	2,000	$27.30	D	107,036	I	By VI E-Cell TropicalTelecom Ltd
Common Stock^F11	Jun 12, 2026	S	19,100	$27.96	D	87,936	I	By VI E-Cell TropicalTelecom Ltd
Common Stock	holding	—	—		—	500	I	By Wife
Common Stock	holding	—	—		—	8,227	I	By Tropical Aircraft Co

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1This Form 4 is being filed late due to inadvertent administrative error.
F10Represents a bona fide gift of 10,000 shares from the reporting person to a non-profit entity.
F11The 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.
F2Represents 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.
F3In 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.
F4The 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.
F5The 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.
F6The 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.
F7Represents shares transferred by VI E-Cell to the reporting person.
F8The 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.
F9The 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.